add macro to set ERROR_CFLAGS

Original commit message from CVS:
add macro to set ERROR_CFLAGS
parent 221ac8ab
2005-07-08 Thomas Vander Stichele <thomas at apestaart dot org>
* m4/gst-error.m4:
add macro to set ERROR_CFLAGS
2005-06-30 Jan Schmidt <thaytan@mad.scientist.com>
* gst-autogen.sh:
......
dnl Decide on error flags
dnl Thomas Vander Stichele <thomas@apestaart.org>
dnl Last modification: 08/07/2005
dnl GST_SET_ERROR_CFLAGS([ADD-WERROR])
dnl Sets ERROR_CFLAGS to something the compiler will accept.
dnl AC_SUBST them so they are available in Makefile
dnl -Wall is added if it is supported
dnl -Werror is added if ADD-WERROR is not "no"
dnl These flags can be overridden at make time:
dnl make ERROR_CFLAGS=
AC_DEFUN([GST_SET_ERROR_CFLAGS],
[AC_REQUIRE([AS_COMPILER_FLAG])dnl
dnl if we support -Wall, set it unconditionally
AS_COMPILER_FLAG(-Wall,
ERROR_CFLAGS="-Wall",
ERROR_CFLAGS="")
dnl if we're in nano >= 1, add -Werror if supported
if test "x$1" != "xno"
then
AS_COMPILER_FLAG(-Werror, ERROR_CFLAGS="$ERROR_CFLAGS -Werror")
fi
AC_SUBST(ERROR_CFLAGS)
AC_MSG_NOTICE([set ERROR_CFLAGS to $ERROR_CFLAGS])
])
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