Work around a pkg-config bug

It doesn't report -I${prefix}/include in cflags, even if .pc
files explicitly put it there. This was breaking the build
outside of a jhbuild shell when libepoxy is in the jhbuild tree
but not in /usr.

diff --git a/configure.ac b/configure.ac
index 62c301feaedc682e8a441fac67c306674084f975..3ca894275c65cca9f399bddc9827e33bf5105294 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -350,7 +350,8 @@ backend_immodules=
 have_gio_unix=no
 GDK_BACKENDS=
 GDK_EXTRA_LIBS=
-GDK_EXTRA_CFLAGS=
+# expoxy.pc has Cflags: -I${includedir}, but pkg-config swallows that :-(
+GDK_EXTRA_CFLAGS="-I${prefix}/include"
 GDK_WINDOWING=
 PANGO_PACKAGES="pango pangocairo"