X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=libcpp%2Fconfigure.ac;h=34ae5c206222f94d90ce50c2aa9757558a2f6add;hb=d71576d634a27eed6e34aee7abfd1b89d32d8949;hp=29bd8c5e6f1a7bddb628f415f3138dfeaa69a483;hpb=0823efedd0fb8669b7e840954bc54c3b2cf08d67;p=gcc.git

diff --git a/libcpp/configure.ac b/libcpp/configure.ac
index 29bd8c5e6f1..34ae5c20622 100644
--- a/libcpp/configure.ac
+++ b/libcpp/configure.ac
@@ -132,8 +132,19 @@ if test $enable_checking != no ; then
 [Define if you want more run-time sanity checks.])
 fi
 
+AC_ARG_ENABLE(canonical-system-headers,
+[  --enable-canonical-system-headers
+                          enable or disable system headers canonicalization],
+[],
+enable_canonical_system_headers=yes)
+if test $enable_canonical_system_headers != no; then
+  AC_DEFINE(ENABLE_CANONICAL_SYSTEM_HEADERS,
+            1, [Define to enable system headers canonicalization.])
+fi
+
 m4_changequote(,)
 case $target in
+	aarch64*-*-* | \
 	alpha*-*-* | \
 	arm*-*-*eabi* | \
 	arm*-*-symbianelf* | \