diff --git a/configure b/configure
index ccda0f96c..3a37d9558 100755
--- a/configure
+++ b/configure
@@ -674,6 +674,13 @@ HARDEN_LDFLAGS
 HARDEN_CFLAGS
 MKPASSWDLIBS
 IRCDLIBS
+OBJEXT
+EXEEXT
+ac_ct_CC
+CPPFLAGS
+LDFLAGS
+CFLAGS
+CC
 PKGCONFIG
 GUNZIP
 GMAKE
@@ -683,13 +690,6 @@ OPENSSLPATH
 TOUCH
 CP
 RM
-OBJEXT
-EXEEXT
-ac_ct_CC
-CPPFLAGS
-LDFLAGS
-CFLAGS
-CC
 BUILDDIR
 target_alias
 host_alias
@@ -2592,6 +2592,365 @@ cat >>confdefs.h <<_ACEOF
 _ACEOF
 
 
+# Extract the first word of "rm", so it can be a program name with args.
+set dummy rm; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_RM+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $RM in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_RM="$RM" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_RM="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+RM=$ac_cv_path_RM
+if test -n "$RM"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RM" >&5
+$as_echo "$RM" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+# Extract the first word of "cp", so it can be a program name with args.
+set dummy cp; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_CP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $CP in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_CP="$CP" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_CP="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+CP=$ac_cv_path_CP
+if test -n "$CP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CP" >&5
+$as_echo "$CP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+# Extract the first word of "touch", so it can be a program name with args.
+set dummy touch; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_TOUCH+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $TOUCH in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_TOUCH="$TOUCH" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_TOUCH="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+TOUCH=$ac_cv_path_TOUCH
+if test -n "$TOUCH"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $TOUCH" >&5
+$as_echo "$TOUCH" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+# Extract the first word of "openssl", so it can be a program name with args.
+set dummy openssl; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_OPENSSLPATH+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $OPENSSLPATH in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_OPENSSLPATH="$OPENSSLPATH" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_OPENSSLPATH="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+OPENSSLPATH=$ac_cv_path_OPENSSLPATH
+if test -n "$OPENSSLPATH"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OPENSSLPATH" >&5
+$as_echo "$OPENSSLPATH" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+# Extract the first word of "install", so it can be a program name with args.
+set dummy install; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_INSTALL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $INSTALL in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_INSTALL="$INSTALL" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_INSTALL="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+INSTALL=$ac_cv_path_INSTALL
+if test -n "$INSTALL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+$as_echo "$INSTALL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+# Extract the first word of "gmake", so it can be a program name with args.
+set dummy gmake; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_MAKER+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$MAKER"; then
+  ac_cv_prog_MAKER="$MAKER" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_MAKER="gmake"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  test -z "$ac_cv_prog_MAKER" && ac_cv_prog_MAKER="make"
+fi
+fi
+MAKER=$ac_cv_prog_MAKER
+if test -n "$MAKER"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAKER" >&5
+$as_echo "$MAKER" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+# Extract the first word of "gmake", so it can be a program name with args.
+set dummy gmake; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_GMAKE+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $GMAKE in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_GMAKE="$GMAKE" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_GMAKE="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+GMAKE=$ac_cv_path_GMAKE
+if test -n "$GMAKE"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $GMAKE" >&5
+$as_echo "$GMAKE" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+# Extract the first word of "gunzip", so it can be a program name with args.
+set dummy gunzip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_GUNZIP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $GUNZIP in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_GUNZIP="$GUNZIP" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_GUNZIP="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+GUNZIP=$ac_cv_path_GUNZIP
+if test -n "$GUNZIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $GUNZIP" >&5
+$as_echo "$GUNZIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+# Extract the first word of "pkg-config", so it can be a program name with args.
+set dummy pkg-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_PKGCONFIG+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $PKGCONFIG in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_PKGCONFIG="$PKGCONFIG" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_PKGCONFIG="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+PKGCONFIG=$ac_cv_path_PKGCONFIG
+if test -n "$PKGCONFIG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKGCONFIG" >&5
+$as_echo "$PKGCONFIG" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -3381,572 +3740,6 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-if test "$ac_cv_c_compiler_gnu" = "yes"; then
-CFLAGS="$CFLAGS -funsigned-char"
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if gcc has a working -pipe" >&5
-$as_echo_n "checking if gcc has a working -pipe... " >&6; }
-if ${ac_cv_pipe+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -pipe"
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_pipe="yes"
-else
-  ac_cv_pipe="no"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-	CFLAGS="$save_cflags"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_pipe" >&5
-$as_echo "$ac_cv_pipe" >&6; }
-if test "$ac_cv_pipe" = "yes"; then
-CFLAGS="-pipe $CFLAGS"
-fi
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the compiler has a working -fno-strict-aliasing" >&5
-$as_echo_n "checking if the compiler has a working -fno-strict-aliasing... " >&6; }
-if ${ac_cv_nsa+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -fno-strict-aliasing"
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_nsa="yes"
-else
-  ac_cv_nsa="no"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-	CFLAGS="$save_cflags"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_nsa" >&5
-$as_echo "$ac_cv_nsa" >&6; }
-if test "$ac_cv_nsa" = "yes"; then
-CFLAGS="$CFLAGS -fno-strict-aliasing"
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the compiler has a working -Wno-pointer-sign" >&5
-$as_echo_n "checking if the compiler has a working -Wno-pointer-sign... " >&6; }
-if ${ac_cv_nps+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -Wno-pointer-sign"
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_nps="yes"
-else
-  ac_cv_nps="no"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-	CFLAGS="$save_cflags"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_nps" >&5
-$as_echo "$ac_cv_nps" >&6; }
-if test "$ac_cv_nps" = "yes"; then
-CFLAGS="$CFLAGS -Wno-pointer-sign"
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the compiler has a working -Wno-invalid-source-encoding" >&5
-$as_echo_n "checking if the compiler has a working -Wno-invalid-source-encoding... " >&6; }
-if ${ac_cv_nise+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -Wno-invalid-source-encoding"
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_nise="yes"
-else
-  ac_cv_nise="no"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-	CFLAGS="$save_cflags"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_nise" >&5
-$as_echo "$ac_cv_nise" >&6; }
-if test "$ac_cv_nise" = "yes"; then
-CFLAGS="$CFLAGS -Wno-invalid-source-encoding"
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the compiler has a working -Wno-format-zero-length" >&5
-$as_echo_n "checking if the compiler has a working -Wno-format-zero-length... " >&6; }
-if ${ac_cv_nfzl+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -Wno-format-zero-length"
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_nfzl="yes"
-else
-  ac_cv_nfzl="no"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-	CFLAGS="$save_cflags"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_nfzl" >&5
-$as_echo "$ac_cv_nfzl" >&6; }
-if test "$ac_cv_nfzl" = "yes"; then
-CFLAGS="$CFLAGS -Wno-format-zero-length"
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the compiler has a working -Wno-format-truncation" >&5
-$as_echo_n "checking if the compiler has a working -Wno-format-truncation... " >&6; }
-if ${ac_cv_nft+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -Wno-format-truncation -Werror"
-	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_nft="yes"
-else
-  ac_cv_nft="no"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-	CFLAGS="$save_cflags"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_nft" >&5
-$as_echo "$ac_cv_nft" >&6; }
-if test "$ac_cv_nft" = "yes"; then
-CFLAGS="$CFLAGS -Wno-format-truncation"
-fi
-
-# Extract the first word of "rm", so it can be a program name with args.
-set dummy rm; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_RM+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $RM in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_RM="$RM" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_RM="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  ;;
-esac
-fi
-RM=$ac_cv_path_RM
-if test -n "$RM"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RM" >&5
-$as_echo "$RM" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-# Extract the first word of "cp", so it can be a program name with args.
-set dummy cp; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_CP+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $CP in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_CP="$CP" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_CP="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  ;;
-esac
-fi
-CP=$ac_cv_path_CP
-if test -n "$CP"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CP" >&5
-$as_echo "$CP" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-# Extract the first word of "touch", so it can be a program name with args.
-set dummy touch; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_TOUCH+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $TOUCH in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_TOUCH="$TOUCH" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_TOUCH="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  ;;
-esac
-fi
-TOUCH=$ac_cv_path_TOUCH
-if test -n "$TOUCH"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $TOUCH" >&5
-$as_echo "$TOUCH" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-# Extract the first word of "openssl", so it can be a program name with args.
-set dummy openssl; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_OPENSSLPATH+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $OPENSSLPATH in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_OPENSSLPATH="$OPENSSLPATH" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_OPENSSLPATH="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  ;;
-esac
-fi
-OPENSSLPATH=$ac_cv_path_OPENSSLPATH
-if test -n "$OPENSSLPATH"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OPENSSLPATH" >&5
-$as_echo "$OPENSSLPATH" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-# Extract the first word of "install", so it can be a program name with args.
-set dummy install; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_INSTALL+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $INSTALL in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_INSTALL="$INSTALL" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_INSTALL="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  ;;
-esac
-fi
-INSTALL=$ac_cv_path_INSTALL
-if test -n "$INSTALL"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
-$as_echo "$INSTALL" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-# Extract the first word of "gmake", so it can be a program name with args.
-set dummy gmake; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_MAKER+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$MAKER"; then
-  ac_cv_prog_MAKER="$MAKER" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_prog_MAKER="gmake"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  test -z "$ac_cv_prog_MAKER" && ac_cv_prog_MAKER="make"
-fi
-fi
-MAKER=$ac_cv_prog_MAKER
-if test -n "$MAKER"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAKER" >&5
-$as_echo "$MAKER" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-# Extract the first word of "gmake", so it can be a program name with args.
-set dummy gmake; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_GMAKE+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $GMAKE in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_GMAKE="$GMAKE" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_GMAKE="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  ;;
-esac
-fi
-GMAKE=$ac_cv_path_GMAKE
-if test -n "$GMAKE"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $GMAKE" >&5
-$as_echo "$GMAKE" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-# Extract the first word of "gunzip", so it can be a program name with args.
-set dummy gunzip; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_GUNZIP+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $GUNZIP in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_GUNZIP="$GUNZIP" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_GUNZIP="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  ;;
-esac
-fi
-GUNZIP=$ac_cv_path_GUNZIP
-if test -n "$GUNZIP"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $GUNZIP" >&5
-$as_echo "$GUNZIP" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-# Extract the first word of "pkg-config", so it can be a program name with args.
-set dummy pkg-config; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_PKGCONFIG+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $PKGCONFIG in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_PKGCONFIG="$PKGCONFIG" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_PKGCONFIG="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  ;;
-esac
-fi
-PKGCONFIG=$ac_cv_path_PKGCONFIG
-if test -n "$PKGCONFIG"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKGCONFIG" >&5
-$as_echo "$PKGCONFIG" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for crypt in -ldescrypt" >&5
 $as_echo_n "checking for crypt in -ldescrypt... " >&6; }
@@ -4950,6 +4743,1326 @@ CC="$saved_CC"
 CXX="$saved_CXX"
 LD="$saved_LD"
 
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fno-strict-aliasing" >&5
+$as_echo_n "checking whether C compiler accepts -fno-strict-aliasing... " >&6; }
+if ${ax_cv_check_cflags__Werror___fno_strict_aliasing+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -fno-strict-aliasing"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___fno_strict_aliasing=yes
+else
+  ax_cv_check_cflags__Werror___fno_strict_aliasing=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___fno_strict_aliasing" >&5
+$as_echo "$ax_cv_check_cflags__Werror___fno_strict_aliasing" >&6; }
+if test x"$ax_cv_check_cflags__Werror___fno_strict_aliasing" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -fno-strict-aliasing" >&5
+$as_echo_n "checking whether C compiler accepts -fno-strict-aliasing... " >&6; }
+if ${ax_cv_check_cflags__Werror___fno_strict_aliasing+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -fno-strict-aliasing"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___fno_strict_aliasing=yes
+else
+  ax_cv_check_cflags__Werror___fno_strict_aliasing=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___fno_strict_aliasing" >&5
+$as_echo "$ax_cv_check_cflags__Werror___fno_strict_aliasing" >&6; }
+if test x"$ax_cv_check_cflags__Werror___fno_strict_aliasing" = xyes; then :
+  CFLAGS="$CFLAGS -fno-strict-aliasing"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+CFLAGS="$CFLAGS -funsigned-char"
+
+
+CFLAGS="$CFLAGS -Wall"
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wextra" >&5
+$as_echo_n "checking whether C compiler accepts -Wextra... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wextra+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wextra"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wextra=yes
+else
+  ax_cv_check_cflags__Werror___Wextra=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wextra" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wextra" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wextra" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wextra" >&5
+$as_echo_n "checking whether C compiler accepts -Wextra... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wextra+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wextra"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wextra=yes
+else
+  ax_cv_check_cflags__Werror___Wextra=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wextra" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wextra" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wextra" = xyes; then :
+  CFLAGS="$CFLAGS -Wextra"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Waggregate-return" >&5
+$as_echo_n "checking whether C compiler accepts -Waggregate-return... " >&6; }
+if ${ax_cv_check_cflags__Werror___Waggregate_return+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Waggregate-return"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Waggregate_return=yes
+else
+  ax_cv_check_cflags__Werror___Waggregate_return=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Waggregate_return" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Waggregate_return" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Waggregate_return" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Waggregate-return" >&5
+$as_echo_n "checking whether C compiler accepts -Waggregate-return... " >&6; }
+if ${ax_cv_check_cflags__Werror___Waggregate_return+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Waggregate-return"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Waggregate_return=yes
+else
+  ax_cv_check_cflags__Werror___Waggregate_return=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Waggregate_return" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Waggregate_return" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Waggregate_return" = xyes; then :
+  CFLAGS="$CFLAGS -Waggregate-return"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wduplicated-cond" >&5
+$as_echo_n "checking whether C compiler accepts -Wduplicated-cond... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wduplicated_cond+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wduplicated-cond"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wduplicated_cond=yes
+else
+  ax_cv_check_cflags__Werror___Wduplicated_cond=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wduplicated_cond" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wduplicated_cond" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wduplicated_cond" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wduplicated-cond" >&5
+$as_echo_n "checking whether C compiler accepts -Wduplicated-cond... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wduplicated_cond+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wduplicated-cond"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wduplicated_cond=yes
+else
+  ax_cv_check_cflags__Werror___Wduplicated_cond=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wduplicated_cond" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wduplicated_cond" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wduplicated_cond" = xyes; then :
+  CFLAGS="$CFLAGS -Wduplicated-cond"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wduplicated-branches" >&5
+$as_echo_n "checking whether C compiler accepts -Wduplicated-branches... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wduplicated_branches+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wduplicated-branches"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wduplicated_branches=yes
+else
+  ax_cv_check_cflags__Werror___Wduplicated_branches=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wduplicated_branches" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wduplicated_branches" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wduplicated_branches" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wduplicated-branches" >&5
+$as_echo_n "checking whether C compiler accepts -Wduplicated-branches... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wduplicated_branches+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wduplicated-branches"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wduplicated_branches=yes
+else
+  ax_cv_check_cflags__Werror___Wduplicated_branches=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wduplicated_branches" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wduplicated_branches" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wduplicated_branches" = xyes; then :
+  CFLAGS="$CFLAGS -Wduplicated-branches"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-pointer-sign" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-pointer-sign... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_pointer_sign+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-pointer-sign"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_pointer_sign=yes
+else
+  ax_cv_check_cflags__Werror___Wno_pointer_sign=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_pointer_sign" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_pointer_sign" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_pointer_sign" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-pointer-sign" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-pointer-sign... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_pointer_sign+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-pointer-sign"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_pointer_sign=yes
+else
+  ax_cv_check_cflags__Werror___Wno_pointer_sign=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_pointer_sign" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_pointer_sign" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_pointer_sign" = xyes; then :
+  CFLAGS="$CFLAGS -Wno-pointer-sign"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-invalid-source-encoding" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-invalid-source-encoding... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_invalid_source_encoding+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-invalid-source-encoding"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_invalid_source_encoding=yes
+else
+  ax_cv_check_cflags__Werror___Wno_invalid_source_encoding=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_invalid_source_encoding" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_invalid_source_encoding" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_invalid_source_encoding" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-invalid-source-encoding" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-invalid-source-encoding... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_invalid_source_encoding+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-invalid-source-encoding"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_invalid_source_encoding=yes
+else
+  ax_cv_check_cflags__Werror___Wno_invalid_source_encoding=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_invalid_source_encoding" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_invalid_source_encoding" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_invalid_source_encoding" = xyes; then :
+  CFLAGS="$CFLAGS -Wno-invalid-source-encoding"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-format-zero-length" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-format-zero-length... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_format_zero_length+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-format-zero-length"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_format_zero_length=yes
+else
+  ax_cv_check_cflags__Werror___Wno_format_zero_length=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_format_zero_length" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_format_zero_length" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_format_zero_length" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-format-zero-length" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-format-zero-length... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_format_zero_length+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-format-zero-length"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_format_zero_length=yes
+else
+  ax_cv_check_cflags__Werror___Wno_format_zero_length=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_format_zero_length" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_format_zero_length" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_format_zero_length" = xyes; then :
+  CFLAGS="$CFLAGS -Wno-format-zero-length"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-format-truncation" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-format-truncation... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_format_truncation+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-format-truncation"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_format_truncation=yes
+else
+  ax_cv_check_cflags__Werror___Wno_format_truncation=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_format_truncation" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_format_truncation" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_format_truncation" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-format-truncation" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-format-truncation... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_format_truncation+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-format-truncation"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_format_truncation=yes
+else
+  ax_cv_check_cflags__Werror___Wno_format_truncation=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_format_truncation" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_format_truncation" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_format_truncation" = xyes; then :
+  CFLAGS="$CFLAGS -Wno-format-truncation"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-unused" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-unused... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_unused+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-unused"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_unused=yes
+else
+  ax_cv_check_cflags__Werror___Wno_unused=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_unused" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_unused" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_unused" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-unused" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-unused... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_unused+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-unused"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_unused=yes
+else
+  ax_cv_check_cflags__Werror___Wno_unused=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_unused" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_unused" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_unused" = xyes; then :
+  CFLAGS="$CFLAGS -Wno-unused"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-unused-parameter" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-unused-parameter... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_unused_parameter+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-unused-parameter"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_unused_parameter=yes
+else
+  ax_cv_check_cflags__Werror___Wno_unused_parameter=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_unused_parameter" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_unused_parameter" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_unused_parameter" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-unused-parameter" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-unused-parameter... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_unused_parameter+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-unused-parameter"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_unused_parameter=yes
+else
+  ax_cv_check_cflags__Werror___Wno_unused_parameter=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_unused_parameter" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_unused_parameter" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_unused_parameter" = xyes; then :
+  CFLAGS="$CFLAGS -Wno-unused-parameter"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-char-subscripts" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-char-subscripts... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_char_subscripts+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-char-subscripts"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_char_subscripts=yes
+else
+  ax_cv_check_cflags__Werror___Wno_char_subscripts=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_char_subscripts" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_char_subscripts" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_char_subscripts" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-char-subscripts" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-char-subscripts... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_char_subscripts+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-char-subscripts"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_char_subscripts=yes
+else
+  ax_cv_check_cflags__Werror___Wno_char_subscripts=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_char_subscripts" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_char_subscripts" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_char_subscripts" = xyes; then :
+  CFLAGS="$CFLAGS -Wno-char-subscripts"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-sign-compare" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-sign-compare... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_sign_compare+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-sign-compare"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_sign_compare=yes
+else
+  ax_cv_check_cflags__Werror___Wno_sign_compare=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_sign_compare" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_sign_compare" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_sign_compare" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-sign-compare" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-sign-compare... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_sign_compare+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-sign-compare"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_sign_compare=yes
+else
+  ax_cv_check_cflags__Werror___Wno_sign_compare=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_sign_compare" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_sign_compare" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_sign_compare" = xyes; then :
+  CFLAGS="$CFLAGS -Wno-sign-compare"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-address" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-address... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_address+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-address"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_address=yes
+else
+  ax_cv_check_cflags__Werror___Wno_address=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_address" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_address" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_address" = xyes; then :
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -Wno-address" >&5
+$as_echo_n "checking whether C compiler accepts -Wno-address... " >&6; }
+if ${ax_cv_check_cflags__Werror___Wno_address+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS -Werror  -Wno-address"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags__Werror___Wno_address=yes
+else
+  ax_cv_check_cflags__Werror___Wno_address=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags__Werror___Wno_address" >&5
+$as_echo "$ax_cv_check_cflags__Werror___Wno_address" >&6; }
+if test x"$ax_cv_check_cflags__Werror___Wno_address" = xyes; then :
+  CFLAGS="$CFLAGS -Wno-address"
+else
+  :
+fi
+
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+else
+  :
+fi
+
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
 
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking if your system has IPv6 support" >&5
diff --git a/configure.ac b/configure.ac
index f27a04236..9d525ee13 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,79 +45,6 @@ AC_DEFINE_UNQUOTED([UNREAL_VERSION_MINOR], [$UNREAL_VERSION_MINOR], [Minor versi
 UNREAL_VERSION_SUFFIX=["-dev"]
 AC_DEFINE_UNQUOTED([UNREAL_VERSION_SUFFIX], ["$UNREAL_VERSION_SUFFIX"], [Version suffix such as a beta marker or release candidate marker. (e.g.: -rcX for unrealircd-3.2.9-rcX)])
 
-AC_PROG_CC
-if test "$ac_cv_prog_gcc" = "yes"; then
-CFLAGS="$CFLAGS -funsigned-char"
-AC_CACHE_CHECK(if gcc has a working -pipe, ac_cv_pipe, [
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -pipe"
-	AC_TRY_COMPILE(,, ac_cv_pipe="yes", ac_cv_pipe="no")
-	CFLAGS="$save_cflags"
-])
-if test "$ac_cv_pipe" = "yes"; then
-CFLAGS="-pipe $CFLAGS"
-fi
-fi
-
-dnl UnrealIRCd might not be strict-aliasing safe at this time
-AC_CACHE_CHECK(if the compiler has a working -fno-strict-aliasing, ac_cv_nsa, [
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -fno-strict-aliasing"
-	AC_TRY_COMPILE(,, ac_cv_nsa="yes", ac_cv_nsa="no")
-	CFLAGS="$save_cflags"
-])
-if test "$ac_cv_nsa" = "yes"; then
-CFLAGS="$CFLAGS -fno-strict-aliasing"
-fi
-
-dnl Pointer signedness warnings are really a pain and 99.9% of the time
-dnl they are of absolutely no use whatsoever. IMO the person who decided
-dnl to enable this without -Wall should be shot on sight.
-AC_CACHE_CHECK(if the compiler has a working -Wno-pointer-sign, ac_cv_nps, [
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -Wno-pointer-sign"
-	AC_TRY_COMPILE(,, ac_cv_nps="yes", ac_cv_nps="no")
-	CFLAGS="$save_cflags"
-])
-if test "$ac_cv_nps" = "yes"; then
-CFLAGS="$CFLAGS -Wno-pointer-sign"
-fi
-
-dnl This is purely for charsys.c... I like it so we can easily read
-dnl this for non-utf8. We can remove it once we ditch non-utf8 some day
-dnl of course, or decide to ignore me and encode them.
-AC_CACHE_CHECK(if the compiler has a working -Wno-invalid-source-encoding, ac_cv_nise, [
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -Wno-invalid-source-encoding"
-	AC_TRY_COMPILE(,, ac_cv_nise="yes", ac_cv_nise="no")
-	CFLAGS="$save_cflags"
-])
-if test "$ac_cv_nise" = "yes"; then
-CFLAGS="$CFLAGS -Wno-invalid-source-encoding"
-fi
-
-dnl Pffff..
-AC_CACHE_CHECK(if the compiler has a working -Wno-format-zero-length, ac_cv_nfzl, [
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -Wno-format-zero-length"
-	AC_TRY_COMPILE(,, ac_cv_nfzl="yes", ac_cv_nfzl="no")
-	CFLAGS="$save_cflags"
-])
-if test "$ac_cv_nfzl" = "yes"; then
-CFLAGS="$CFLAGS -Wno-format-zero-length"
-fi
-
-dnl More and more and more....
-AC_CACHE_CHECK(if the compiler has a working -Wno-format-truncation, ac_cv_nft, [
-	save_cflags="$CFLAGS"
-	CFLAGS="$CFLAGS -Wno-format-truncation -Werror"
-	AC_TRY_COMPILE(,, ac_cv_nft="yes", ac_cv_nft="no")
-	CFLAGS="$save_cflags"
-])
-if test "$ac_cv_nft" = "yes"; then
-CFLAGS="$CFLAGS -Wno-format-truncation"
-fi
-
 AC_PATH_PROG(RM,rm)
 AC_PATH_PROG(CP,cp)
 AC_PATH_PROG(TOUCH,touch)
@@ -224,6 +151,68 @@ CXX="$saved_CXX"
 LD="$saved_LD"
 dnl HARDENING END
 
+dnl UnrealIRCd might not be strict-aliasing safe at this time
+check_cc_cxx_flag([-fno-strict-aliasing], [CFLAGS="$CFLAGS -fno-strict-aliasing"])
+
+dnl Previously -funsigned-char was in a config check. It would always
+dnl be enabled with gcc and clang. We now unconditionally enable it,
+dnl skipping the check. This will cause an error if someone uses a
+dnl non-gcc/non-clang compiler that does not support -funsigned-char
+dnl which is good. After all, we really depend on it.
+dnl UnrealIRCd should never be compiled without char being unsigned.
+CFLAGS="$CFLAGS -funsigned-char"
+
+dnl Compiler -W checks...
+
+dnl We should be able to turn this on unconditionally:
+CFLAGS="$CFLAGS -Wall"
+
+dnl More warnings (if the compiler supports it):
+check_cc_cxx_flag([-Wextra], [CFLAGS="$CFLAGS -Wextra"])
+check_cc_cxx_flag([-Waggregate-return], [CFLAGS="$CFLAGS -Waggregate-return"])
+dnl The following few are more experimental, if they have false positives we'll have
+dnl to disable them:
+dnl Can't use this, too bad: check_cc_cxx_flag([-Wlogical-op], [CFLAGS="$CFLAGS -Wlogical-op"])
+check_cc_cxx_flag([-Wduplicated-cond], [CFLAGS="$CFLAGS -Wduplicated-cond"])
+check_cc_cxx_flag([-Wduplicated-branches], [CFLAGS="$CFLAGS -Wduplicated-branches"])
+
+dnl And now to filter out certain warnings:
+
+dnl Pointer signedness warnings are really a pain and 99.9% of the time
+dnl they are of absolutely no use whatsoever. IMO the person who decided
+dnl to enable this without -Wall should be shot on sight.
+check_cc_cxx_flag([-Wno-pointer-sign], [CFLAGS="$CFLAGS -Wno-pointer-sign"])
+
+dnl This is purely for charsys.c... I like it so we can easily read
+dnl this for non-utf8. We can remove it once we ditch non-utf8 some day
+dnl of course, or decide to ignore me and encode them.
+check_cc_cxx_flag([-Wno-invalid-source-encoding], [CFLAGS="$CFLAGS -Wno-invalid-source-encoding"])
+
+check_cc_cxx_flag([-Wno-format-zero-length], [CFLAGS="$CFLAGS -Wno-format-zero-length"])
+
+check_cc_cxx_flag([-Wno-format-truncation], [CFLAGS="$CFLAGS -Wno-format-truncation"])
+
+dnl While it can be useful to occasionally to compile with warnings about
+dnl unused variables and parameters, we often 'think ahead' when coding things
+dnl so they may be useless now but not later. Similarly, for variables, we
+dnl don't always care about a variable that may still be present in a build
+dnl without DEBUGMODE. Unused variables are optimized out anyway.
+check_cc_cxx_flag([-Wno-unused], [CFLAGS="$CFLAGS -Wno-unused"])
+check_cc_cxx_flag([-Wno-unused-parameter], [CFLAGS="$CFLAGS -Wno-unused-parameter"])
+
+dnl We use this and this warning is meaningless since 'char' is always unsigned
+dnl in UnrealIRCd compiles (-funsigned-char).
+check_cc_cxx_flag([-Wno-char-subscripts], [CFLAGS="$CFLAGS -Wno-char-subscripts"])
+
+check_cc_cxx_flag([-Wno-sign-compare], [CFLAGS="$CFLAGS -Wno-sign-compare"])
+
+dnl This one fails with ircstrdup(var, staticstring)
+dnl Shame we have to turn it off completely...
+check_cc_cxx_flag([-Wno-address], [CFLAGS="$CFLAGS -Wno-address"])
+
+dnl End of -W... compiler checks.
+
+
 dnl module checking based on Hyb7's module checking code
 AC_DEFUN([AC_ENABLE_DYN],
 [
diff --git a/src/channel.c b/src/channel.c
index 567d0ec9d..f7f55f244 100644
--- a/src/channel.c
+++ b/src/channel.c
@@ -80,7 +80,7 @@ aCtab cFlagTab[] = {
 	{MODE_BAN, 'b', 1, 1},
 	{MODE_EXCEPT, 'e', 1, 1},	/* exception ban */
 	{MODE_INVEX, 'I', 1, 1},	/* invite-only exception */
-	{0x0, 0x0, 0x0}
+	{0x0, 0x0, 0x0, 0x0}
 };
 
 char cmodestring[512];
diff --git a/src/dbuf.c b/src/dbuf.c
index aa64525db..f2ca71244 100644
--- a/src/dbuf.c
+++ b/src/dbuf.c
@@ -169,7 +169,7 @@ int  dbuf_getmsg(dbuf *dyn, char *buf)
 			}
 			else switch (phase)
 			{
-				case 0: phase = 1;
+				case 0: phase = 1; /* FALLTHROUGH */
 				case 1: if (line_bytes++ < BUFSIZE - 2)
 						*buf++ = c;
 					break;
diff --git a/src/modules/chanmodes/floodprot.c b/src/modules/chanmodes/floodprot.c
index 0ad78298c..a9cced4bc 100644
--- a/src/modules/chanmodes/floodprot.c
+++ b/src/modules/chanmodes/floodprot.c
@@ -502,7 +502,7 @@ invalidsyntax:
 		return EX_DENY;
 	}
 
-	/* falltrough -- should not be used */
+	/* fallthrough -- should not be used */
 	return EX_DENY;
 }
 
diff --git a/src/modules/chanmodes/link.c b/src/modules/chanmodes/link.c
index 789498c45..b8939e63c 100644
--- a/src/modules/chanmodes/link.c
+++ b/src/modules/chanmodes/link.c
@@ -107,7 +107,7 @@ int cmodeL_is_ok(aClient *sptr, aChannel *chptr, char mode, char *para, int type
 		return EX_ALLOW;
 	}
 
-	/* falltrough -- should not be used */
+	/* fallthrough -- should not be used */
 	return EX_DENY;
 }
 
diff --git a/src/modules/m_chghost.c b/src/modules/m_chghost.c
index 4058a7123..cc2eade70 100644
--- a/src/modules/m_chghost.c
+++ b/src/modules/m_chghost.c
@@ -32,6 +32,7 @@ ModuleHeader MOD_HEADER(m_chghost)
 	"4.2", /* Version */
 	"/chghost", /* Short description of module */
 	"3.2-b8-1",
+	NULL
     };
 
 MOD_INIT(m_chghost)
diff --git a/src/modules/m_mode.c b/src/modules/m_mode.c
index 40cc187e8..e031c0305 100644
--- a/src/modules/m_mode.c
+++ b/src/modules/m_mode.c
@@ -821,6 +821,7 @@ int  do_mode_char(aChannel *chptr, long modetype, char modechar, char *param,
 					if (!is_halfop(cptr, chptr)) /* htrig will take care of halfop override notices */
 						opermode = 1;
 			}
+			goto process_listmode;
 		case MODE_CHANPROT:
 			REQUIRE_PARAMETER()
 			/* not uline, not server, not chanowner, not an samode, not -a'ing yourself... */
@@ -835,12 +836,13 @@ int  do_mode_char(aChannel *chptr, long modetype, char modechar, char *param,
 					if (!is_halfop(cptr, chptr)) /* htrig will take care of halfop override notices */
 						opermode = 1;
 			}
-
+			goto process_listmode;
 
 		case MODE_HALFOP:
 		case MODE_CHANOP:
 		case MODE_VOICE:
 			REQUIRE_PARAMETER()
+process_listmode:
 			if (!(who = find_chasing(cptr, param, &chasing)))
 				break;
 			if (!who->user)
@@ -1656,6 +1658,7 @@ CMD_FUNC(_m_umode)
 						set_snomask(sptr, parv[3]);
 					goto def;
 				}
+				break;
 			case 'o':
 			case 'O':
 				if(sptr->from->flags & FLAGS_QUARANTINE)
diff --git a/src/modules/m_tkl.c b/src/modules/m_tkl.c
index 3a8394868..43f213d35 100644
--- a/src/modules/m_tkl.c
+++ b/src/modules/m_tkl.c
@@ -3052,7 +3052,7 @@ static int comp_with_mask(void *addr, void *dest, u_int mask)
 	if (memcmp(addr, dest, mask / 8) == 0)
 	{
 		int n = mask / 8;
-		int m = ((-1) << (8 - (mask % 8)));
+		int m = (0xffff << (8 - (mask % 8)));
 		if (mask % 8 == 0 || (((u_char *) addr)[n] & m) == (((u_char *) dest)[n] & m))
 		{
 			return (1);
diff --git a/src/modules/webirc.c b/src/modules/webirc.c
index 33d4875df..20afada39 100644
--- a/src/modules/webirc.c
+++ b/src/modules/webirc.c
@@ -474,7 +474,7 @@ int webirc_local_pass(aClient *sptr, char *password)
 		
 			return dowebirc(sptr, ip, host, NULL);
 		}
-		/* falltrough if not in webirc block.. */
+		/* fallthrough if not in webirc block.. */
 	}
 
 	return 0; /* not webirc */
diff --git a/src/parse.c b/src/parse.c
index 6fc1d84a8..b15af533b 100644
--- a/src/parse.c
+++ b/src/parse.c
@@ -69,7 +69,7 @@ aClient *find_client(char *name, aClient *cptr)
 	return hash_find_client(name, NULL);
 }
 
-aClient inline *find_nickserv(char *name, aClient *cptr)
+aClient *find_nickserv(char *name, aClient *cptr)
 {
 	if (name)
 		cptr = hash_find_nickserver(name, cptr);
@@ -91,7 +91,7 @@ aClient inline *find_nickserv(char *name, aClient *cptr)
 **	the old. 'name' is now assumed to be a null terminated
 **	string.
 */
-aClient inline *find_server(char *name, aClient *cptr)
+aClient *find_server(char *name, aClient *cptr)
 {
 	if (name)
 	{
@@ -105,7 +105,7 @@ aClient inline *find_server(char *name, aClient *cptr)
 }
 
 
-aClient inline *find_name(char *name, aClient *cptr)
+aClient *find_name(char *name, aClient *cptr)
 {
 	aClient *c2ptr = cptr;
 
diff --git a/src/s_bsd.c b/src/s_bsd.c
index e54c56ad4..d7509c41a 100644
--- a/src/s_bsd.c
+++ b/src/s_bsd.c
@@ -1341,7 +1341,7 @@ void read_packet(int fd, int revents, void *data)
 
 		if (length <= 0)
 		{
-			if (length < 0 && (ERRNO == P_EWOULDBLOCK || ERRNO == P_EAGAIN || ERRNO == P_EINTR))
+			if (length < 0 && ((ERRNO == P_EWOULDBLOCK) || (ERRNO == P_EAGAIN) || (ERRNO == P_EINTR)))
 				return;
 
 			if (IsServer(cptr) || cptr->serv) /* server or outgoing connection */
diff --git a/src/s_misc.c b/src/s_misc.c
index ef5971adf..26f832602 100644
--- a/src/s_misc.c
+++ b/src/s_misc.c
@@ -114,7 +114,7 @@ SpamfilterTargetTable spamfiltertargettable[] = {
 	{ SPAMF_USER,		'u',	"user",				"NICK" },
 	{ SPAMF_AWAY,		'a',	"away",				"AWAY" },
 	{ SPAMF_TOPIC,		't',	"topic",			"TOPIC" },
-	{ 0, 0, 0 }
+	{ 0, 0, 0, 0 }
 };
 
 
diff --git a/src/socket.c b/src/socket.c
index 00a09b8e7..a589ce75f 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -92,6 +92,7 @@ int  deliver_it(aClient *cptr, char *str, int len, int *want_read)
 			case SSL_ERROR_SSL:
 				if (ERRNO == P_EAGAIN)
 					break;
+				/* FALLTHROUGH */
 			default:
 				return -1; /* hm.. why was this 0?? we have an error! */
 			}