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-rw-r--r--readline/examples/rlfe/configure.in2
1 files changed, 1 insertions, 1 deletions
diff --git a/readline/examples/rlfe/configure.in b/readline/examples/rlfe/configure.in
index ad685416b79..a3d35e853b8 100644
--- a/readline/examples/rlfe/configure.in
+++ b/readline/examples/rlfe/configure.in
@@ -8,7 +8,7 @@ AC_SUBST(VERSION)
dnl
dnl Define some useful macros
dnl
-AC_DEFUN(AC_PROGRAM_SOURCE,
+AC_DEFUN([AC_PROGRAM_SOURCE],
[AC_REQUIRE([AC_PROG_CPP])AC_PROVIDE([$0])cat > conftest.c <<EOF
#include "confdefs.h"
[$1]