X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;ds=sidebyside;f=configure.ac;h=ec1bb8288efc1731f829fc439b28fe57be865de3;hb=a2c1aad27d2f9c88ba384f9861143c42c3c3eee7;hp=a7707f8a8e4567483990777189853ed3efe84418;hpb=758b99894170c1c18370b370eb33dda7d0d14a8d;p=mesa.git

diff --git a/configure.ac b/configure.ac
index a7707f8a8e4..ec1bb8288ef 100644
--- a/configure.ac
+++ b/configure.ac
@@ -30,6 +30,15 @@ AC_PATH_PROG(MAKE, make)
 AC_PATH_PROG(MKDEP, makedepend)
 AC_PATH_PROG(SED, sed)
 
+dnl Ask gcc where it's keeping its secret headers
+if test "x$GCC" = xyes; then
+    GCC_PATH=$(gcc -print-search-dirs | sed -ne 's/install: //p')
+    MKDEP_OPTIONS="-fdepend -I${GCC_PATH}include"
+else
+    MKDEP_OPTIONS=-fdepend
+fi
+AC_SUBST(MKDEP_OPTIONS)
+
 dnl Make sure the pkg-config macros are defined
 m4_ifdef([PKG_PROG_PKG_CONFIG],,[
     AC_MSG_ERROR([The pkg-config autoconf macros are not defined.