core: add Travis CI builds with Python 3 and without GnuTLS

scripts/build.sh

@@ -21,6 +21,16 @@
 #
 # Build WeeChat with CMake or autotools, according to environment variable
 # $BUILDTOOL or first script argument (if given).
+# The optional variable $BUILDARGS can be set with arguments for cmake or
+# configure commands.
+#
+# Syntax to run the script with environment variables:
+#   BUILDTOOL=cmake|autotools ./build.sh
+#   BUILDTOOL=cmake|autotools BUILDARGS="arguments" ./build.sh
+#
+# Syntax to run the script with arguments on command line:
+#   ./build.sh cmake|autotools
+#   ./build.sh cmake|autotools arguments
 #
 # This script is used to build WeeChat in Travis CI environment.
 #
@@ -38,7 +48,12 @@ run ()
 BUILDDIR="build-tmp-$$"
 
 if [ $# -ge 1 ]; then
-    BUILDTOOL=$1
+    BUILDTOOL="$1"
+    shift
+fi
+
+if [ $# -ge 1 ]; then
+    BUILDARGS="$*"
 fi
 
 if [ -z "$BUILDTOOL" ]; then
@@ -52,7 +67,7 @@ run "cd $BUILDDIR"
 
 if [ "$BUILDTOOL" = "cmake" ]; then
     # build with CMake
-    run "cmake .. -DENABLE_MAN=ON -DENABLE_DOC=ON -DENABLE_TESTS=ON"
+    run "cmake .. -DENABLE_MAN=ON -DENABLE_DOC=ON -DENABLE_TESTS=ON ${BUILDARGS}"
     run "make VERBOSE=1 -j$(nproc)"
     run "sudo make install"
     run "ctest -V"
@@ -61,7 +76,7 @@ fi
 if [ "$BUILDTOOL" = "autotools" ]; then
     # build with autotools
     run "../autogen.sh"
-    run "../configure --enable-man --enable-doc --enable-tests"
+    run "../configure --enable-man --enable-doc --enable-tests ${BUILDARGS}"
     run "make -j$(nproc)"
     run "sudo make install"
     run "./tests/tests -v"