scanner: check for wayland-scanner.pc before using variables

If wayland-scanner.pc can't be found the variables end up being set irrespectively, leaving the user with odd compiler errors about missing headers, etc.
joey-lunarg · Aug 7, 2013 · 6dd0ba0 · 6dd0ba0
1 parent 2b26edb
commit 6dd0ba0
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/wayland-scanner.m4 b/wayland-scanner.m4
@@ -1,6 +1,8 @@
 AC_DEFUN([WAYLAND_SCANNER_RULES], [
     PKG_PROG_PKG_CONFIG
 
+    PKG_CHECK_MODULES([WAYLAND_SCANNER], [wayland-scanner])
+
     wayland_scanner=`$PKG_CONFIG --variable=wayland_scanner wayland-scanner`
     AC_SUBST([wayland_scanner])