PR 14072

[deliverable/binutils-gdb.git] / gold / configure.ac

diff --git a/gold/configure.ac b/gold/configure.ac
index ee534094ecd6904326aec622635845b8adab4a0e..a2c4875eb422b893087d71d9e563d58fe82aad5e 100644 (file)
--- a/gold/configure.ac
+++ b/gold/configure.ac
@@ -11,6 +11,15 @@ AM_INIT_AUTOMAKE([no-dist parallel-tests])
 
 AM_CONFIG_HEADER(config.h:config.in)
 
+# PR 14072
+AH_VERBATIM([00_CONFIG_H_CHECK],
+[/* Check that config.h is #included before system headers
+   (this works only for glibc, but that should be enough).  */
+#if defined(__GLIBC__) && !defined(__CONFIG_H__)
+#  error config.h must be #included before system headers
+#endif
+#define __CONFIG_H__ 1])
+
 AC_ARG_WITH(sysroot,
 [  --with-sysroot[=DIR]    search for usr/lib et al within DIR],
 [sysroot=$withval], [sysroot=no])