[RFC PATCH v1 1/3] drm: add config for detecting libdrm

[Zhibin Li]

Use pkg-config to try to find libdrm headers. If that fails look for
the kernel headers. If no headers are found, drm support will not be
compiled.

* configure.ac: Use pkg-config to find libdrm.

Co-authored by: Patrik Jakobsson <patrik.r.jakobsson at gmail.com>
---
 configure.ac | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure.ac b/configure.ac
index 621312ac..6397231d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -895,6 +895,11 @@ AC_CHECK_TOOL([READELF], [readelf])
 
 st_STACKTRACE
 
+PKG_CHECK_MODULES([LIBDRM], [libdrm],
+		  [CPPFLAGS="$CPPFLAGS $LIBDRM_CFLAGS"
+		   AC_CHECK_HEADERS([drm.h])],
+		  [AC_CHECK_HEADERS([drm/drm.h])])
+
 if test "$arch" = mips && test "$no_create" != yes; then
 	mkdir -p linux/mips
 	if $srcdir/linux/mips/genstub.sh linux/mips; then
-- 
2.21.0