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configure: Less intrusive CFLAGS change when --enable-debug is chosen

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The previous code made a dumb change to CFLAGS which would cause user
supplied CFLAGS to be ignored, and possible compiler compatibility issues.

The new code does the same changes in a smoother way, so we do not totally
drop user specified or script detected compiler options.

When debug is enabled, we also include a reminder for the final CFLAGS
value.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
This commit is contained in:
Christophe CURIS
2013-11-08 23:08:19 +01:00
committed by Carlos R. Mafra
parent 59f5aeeec5
commit 4cf72c990d
1 changed files with 14 additions and 2 deletions
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16
configure.ac
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@@ -84,7 +84,18 @@ AC_ARG_ENABLE(debug,
[AC_MSG_ERROR([bad value $enableval for --enable-debug])] )], [AC_MSG_ERROR([bad value $enableval for --enable-debug])] )],
[debug=no]) [debug=no])
AS_IF([test "x$debug" = "xyes"], AS_IF([test "x$debug" = "xyes"],
[CFLAGS="-g -O0" ; CPPFLAGS="$CPPFLAGS -DDEBUG"]) [dnl This flag should have already been detected and added, but if user
dnl provided an explicit CFLAGS it may not be the case
AS_IF([echo " $CFLAGS " | grep " -g " 2>&1 > /dev/null],
[@%:@ Debug symbol already activated],
[AX_CFLAGS_GCC_OPTION([-g])])
dnl
dnl This flag generally makes debugging nightmarish, remove it if present
CFLAGS="`echo "$CFLAGS" | sed -e 's/-fomit-frame-pointer *//' `"
dnl
dnl Enable internal debug code
CPPFLAGS="$CPPFLAGS -DDEBUG"
])
AX_CFLAGS_GCC_OPTION(-Wall) AX_CFLAGS_GCC_OPTION(-Wall)
@@ -841,7 +852,8 @@ dnl echo "Supported languages beside English : $languages"
if test "x$MOFILES" != "x"; then if test "x$MOFILES" != "x"; then
echo "Installation path for translations : $NLSDIR" | sed -e 's|\$(prefix)|'"$prefix|" echo "Installation path for translations : $NLSDIR" | sed -e 's|\$(prefix)|'"$prefix|"
fi fi
AS_IF([test "x$debug" = "xyes"], [echo "Debug information enabled : $debug"]) AS_IF([test "x$debug" = "xyes"],
[AS_ECHO(["Debug enabled: CFLAGS = $CFLAGS"]) ])
echo echo
dnl WM_PRINT_REDCRAP_BUG_STATUS dnl WM_PRINT_REDCRAP_BUG_STATUS