core: check if malloc.h is present, independently of function malloc_trim

CMakeLists.txt

@@ -192,7 +192,9 @@ include(CheckSymbolExists)
 check_include_files("langinfo.h" HAVE_LANGINFO_CODESET)
 check_include_files("sys/resource.h" HAVE_SYS_RESOURCE_H)
 
+check_include_files("malloc.h" HAVE_MALLOC_H)
 check_symbol_exists("malloc_trim" "malloc.h" HAVE_MALLOC_TRIM)
+
 check_function_exists(mallinfo HAVE_MALLINFO)
 check_function_exists(mallinfo2 HAVE_MALLINFO2)
 

config.h.cmake

@@ -5,6 +5,7 @@
 #cmakedefine ICONV_2ARG_IS_CONST 1
 #cmakedefine HAVE_MALLINFO
 #cmakedefine HAVE_MALLINFO2
+#cmakedefine HAVE_MALLOC_H
 #cmakedefine HAVE_MALLOC_TRIM
 #cmakedefine HAVE_EAT_NEWLINE_GLITCH
 #cmakedefine HAVE_ASPELL_VERSION_STRING

src/core/wee-command.c

@@ -40,7 +40,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <errno.h>
-#ifdef HAVE_MALLOC_TRIM
+#ifdef HAVE_MALLOC_H
 #include <malloc.h>
 #endif