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-rw-r--r--gas/configure.in1
1 files changed, 1 insertions, 0 deletions
diff --git a/gas/configure.in b/gas/configure.in
index d95a80c..c7753ec 100644
--- a/gas/configure.in
+++ b/gas/configure.in
@@ -596,6 +596,7 @@ AC_DEFINE_UNQUOTED(TARGET_VENDOR, "${target_vendor}", [Target vendor.])
AC_DEFINE_UNQUOTED(TARGET_OS, "${target_os}", [Target OS.])
AC_PROG_CC
+AC_GNU_SOURCE
AC_PROG_YACC
AM_PROG_LEX