[gnome-system-tools: 38/39] Enable AM silent rules and compiler warnings

[Milan Bouchet-Valat <milanbv src gnome org>]

commit e3de4a3d7724583e4b04dccd223d0c9275a875d2
Author: Milan Bouchet-Valat <nalimilan club fr>
Date:   Mon Nov 30 23:19:26 2009 +0100

    Enable AM silent rules and compiler warnings
    
    Warnings were not shown at all for a long time in the gst, which you can understand when seeing all the messages that now appear. Silent rules make it more rewarding to fix them... Code for warnings is taken for PolicyKit-gnome's configure.ac.

 configure.in |   54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 54 insertions(+), 0 deletions(-)
---
diff --git a/configure.in b/configure.in
index 45c8eb8..4618141 100644
--- a/configure.in
+++ b/configure.in
@@ -3,6 +3,7 @@ AC_INIT(gnome-system-tools, 2.27.92, http://bugzilla.gnome.org/enter_bug.cgi?pro
 AC_CONFIG_SRCDIR(src/common/gst-tool.c)
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE(AC_PACKAGE_NAME, AC_PACKAGE_VERSION)
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
 
 IT_PROG_INTLTOOL([0.35.0])
 
@@ -191,6 +192,59 @@ dnl =====================================================
 dnl GST_LIBS & GST_CFLAGS 
 dnl =====================================================
 
+
+#### gcc warning flags (taken from PolicyKit-gnome)
+
+if test "x$GCC" = "xyes"; then
+  changequote(,)dnl
+  case " $CFLAGS " in
+  *[\ \	]-Wall[\ \	]*) ;;
+  *) CFLAGS="$CFLAGS -Wall" ;;
+  esac
+
+  case " $CFLAGS " in
+  *[\ \	]-Wchar-subscripts[\ \	]*) ;;
+  *) CFLAGS="$CFLAGS -Wchar-subscripts" ;;
+  esac
+
+  case " $CFLAGS " in
+  *[\ \	]-Wmissing-declarations[\ \	]*) ;;
+  *) CFLAGS="$CFLAGS -Wmissing-declarations" ;;
+  esac
+
+  case " $CFLAGS " in
+  *[\ \	]-Wnested-externs[\ \	]*) ;;
+  *) CFLAGS="$CFLAGS -Wnested-externs" ;;
+  esac
+
+  case " $CFLAGS " in
+  *[\ \	]-Wpointer-arith[\ \	]*) ;;
+  *) CFLAGS="$CFLAGS -Wpointer-arith" ;;
+  esac
+
+  case " $CFLAGS " in
+  *[\ \	]-Wcast-align[\ \	]*) ;;
+  *) CFLAGS="$CFLAGS -Wcast-align" ;;
+  esac
+
+  case " $CFLAGS " in
+  *[\ \	]-Wsign-compare[\ \	]*) ;;
+  *) CFLAGS="$CFLAGS -Wsign-compare" ;;
+  esac
+
+  case " $CFLAGS " in
+  *[\ \	]-Wformat[\ \	]*) ;;
+  *) CFLAGS="$CFLAGS -Wformat" ;;
+  esac
+
+  case " $CFLAGS " in
+  *[\ \	]-Wformat-security[\ \	]*) ;;
+  *) CFLAGS="$CFLAGS -Wformat-security" ;;
+  esac
+
+  changequote([,])dnl
+fi
+
 dnl GST_DEPRECATED_FLAGS="-DG_DISABLE_DEPRECATED -DGDK_DISABLE_DEPRECATED -DGTK_DISABLE_DEPRECATED -DGDK_PIXBUF_DISABLE_DEPRECATED -DGNOME_DISABLE_DEPRECATED"
 GST_DEPRECATED_FLAGS=""