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-rw-r--r--config/gr_lib64.m42
1 files changed, 1 insertions, 1 deletions
diff --git a/config/gr_lib64.m4 b/config/gr_lib64.m4
index 751f774b4..92f1bd917 100644
--- a/config/gr_lib64.m4
+++ b/config/gr_lib64.m4
@@ -40,7 +40,7 @@ AC_DEFUN([GR_LIB64],[
AC_MSG_CHECKING([gr_libdir_suffix])
gr_libdir_suffix=""
- AC_SUBST(gr_libdir_suffix)
+ AC_SUBST([gr_libdir_suffix])
case "$host_os" in
linux*) is_linux=yes ;;