vala.m4: honour CC, CPPFLAGS, CFLAGS, LDFLAGS

These variables may be set to values that are required to build
executables.  Make sure we honour them from vala.m4 when attempting to
check for packages.

https://bugzilla.gnome.org/show_bug.cgi?id=724176

1 files changed, 1 insertions, 1 deletions

diff --git a/vala.m4 b/vala.m4
index 79c32a14a..4fc0740c2 100644
--- a/vala.m4
+++ b/vala.m4
@@ -29,7 +29,7 @@ AC_DEFUN([_VALA_CHECK_COMPILE_WITH_ARGS],
 void main(){}
 _ACEOF
 
-  AS_IF([vala_error=`$VALAC $1 -q -o conftest$ac_exeext conftest.vala 2>&1`],
+  AS_IF([vala_error=`$VALAC $1 -q --cc="${CC} ${CPPFLAGS} ${CFLAGS} ${LDFLAGS}" -o conftest$ac_exeext conftest.vala 2>&1`],
         [$2], [$3])
 ])