[PATCH util/macros] XORG_PROG_RAWCPP: Add TRADITIONALCPPFLAGS

[Hans de Goede]

In some cases we may want to have -traditional for proper whitespace preserving
without -undef, as we actually want the system definitions to be in place
so we can #ifdef on them. IE in xinit various .cpp files contain things like
 #ifdef __APPLE__ and #ifdef __linux__

So this patch adds a TRADITIONALCPPFLAGS variable which contains just
-traditional where applicable without the other RAWCPPFLAGS for unsetting
the system definitions.

Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
 xorg-macros.m4.in | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xorg-macros.m4.in b/xorg-macros.m4.in
index 1680f32..f160a40 100644
--- a/xorg-macros.m4.in
+++ b/xorg-macros.m4.in
@@ -87,6 +87,7 @@ if test `${RAWCPP} < conftest.$ac_ext | grep -c 'preserve   \"'` -eq 1 ; then
 	AC_MSG_RESULT([no])
 else
 	if test `${RAWCPP} -traditional < conftest.$ac_ext | grep -c 'preserve   \"'` -eq 1 ; then
+		TRADITIONALCPPFLAGS="-traditional"
 		RAWCPPFLAGS="${RAWCPPFLAGS} -traditional"
 		AC_MSG_RESULT([yes])
 	else
@@ -95,6 +96,7 @@ else
 fi
 rm -f conftest.$ac_ext
 AC_SUBST(RAWCPPFLAGS)
+AC_SUBST(TRADITIONALCPPFLAGS)
 ]) # XORG_PROG_RAWCPP
 
 # XORG_MANPAGE_SECTIONS()
-- 
1.9.0