gegl r2150 - trunk

[neo svn gnome org]

Author: neo
Date: Sun Apr  6 12:59:49 2008
New Revision: 2150
URL: http://svn.gnome.org/viewvc/gegl?rev=2150&view=rev

Log:
2008-04-06  Sven Neumann  <sven gimp org>

	* acinclude.m4: added GEGL_DETECT_CFLAGS() macro.

	* configure.ac: adjust CFLAGS to get some extra compiler 
warnings.



Modified:
   trunk/ChangeLog
   trunk/acinclude.m4
   trunk/configure.ac

Modified: trunk/acinclude.m4
==============================================================================
--- trunk/acinclude.m4	(original)
+++ trunk/acinclude.m4	Sun Apr  6 12:59:49 2008
@@ -1,3 +1,25 @@
+dnl GEGL_DETECT_CFLAGS(RESULT, FLAGSET)
+dnl Detect if the compiler supports a set of flags
+
+AC_DEFUN([GEGL_DETECT_CFLAGS],
+[
+  $1=
+  for flag in $2; do
+    if test -z "[$]$1"; then
+      $1_save_CFLAGS="$CFLAGS"
+      CFLAGS="$CFLAGS $flag"
+      AC_MSG_CHECKING([whether [$]CC understands [$]flag])
+      AC_TRY_COMPILE([], [], [$1_works=yes], [$1_works=no])
+      AC_MSG_RESULT([$]$1_works)
+      CFLAGS="[$]$1_save_CFLAGS"
+      if test "x[$]$1_works" = "xyes"; then
+        $1="$flag"
+      fi
+    fi
+  done
+])
+
+
 dnl The following lines were copied from gtk-doc.m4
 
 dnl Usage:

Modified: trunk/configure.ac
==============================================================================
--- trunk/configure.ac	(original)
+++ trunk/configure.ac	Sun Apr  6 12:59:49 2008
@@ -178,31 +178,34 @@
   AC_MSG_RESULT([no])
 fi
 
-AC_ARG_ENABLE(ansi,
-              [  --enable-ansi           turn on strict ansi (default=no)],,
-              enable_ansi=no)
-
 changequote(,)dnl
 if eval "test x$GCC = xyes"; then
   case " $CFLAGS " in
   *[\ \	]-Wall[\ \	]*) ;;
   *) CFLAGS="$CFLAGS -Wall" ;;
   esac
-
-  if test "x$enable_ansi" = "xyes"; then
-    case " $CFLAGS " in
-    *[\ \	]-ansi[\ \	]*) ;;
-    *) CFLAGS="$CFLAGS -ansi" ;;
-    esac
-
-    case " $CFLAGS " in
-    *[\ \	]-pedantic[\ \	]*) ;;
-    *) CFLAGS="$CFLAGS -pedantic" ;;
-    esac
-  fi
 fi
 changequote([,])dnl
 
+GEGL_DETECT_CFLAGS(extra_warnings, '-Wdeclaration-after-statement')
+CFLAGS="$CFLAGS $extra_warnings"
+
+GEGL_DETECT_CFLAGS(extra_warnings, '-Wmissing-prototypes')
+CFLAGS="$CFLAGS $extra_warnings"
+
+GEGL_DETECT_CFLAGS(extra_warnings, '-Wmissing-declarations')
+CFLAGS="$CFLAGS $extra_warnings"
+
+GEGL_DETECT_CFLAGS(extra_warnings, '-Winit-self')
+CFLAGS="$CFLAGS $extra_warnings"
+
+GEGL_DETECT_CFLAGS(extra_warnings, '-Wpointer-arith')
+CFLAGS="$CFLAGS $extra_warnings"
+
+GEGL_DETECT_CFLAGS(extra_warnings, '-Wold-style-definition')
+CFLAGS="$CFLAGS $extra_warnings"
+
+
 dnl disable docs generation.
 AC_ARG_ENABLE([docs],
               [  --disable-docs          disable docs generation (default=no)],,