From ffa886a580929f26fd5e5a40c9c5334955c48553 Mon Sep 17 00:00:00 2001 From: Explorer09 Date: Mon, 4 Sep 2017 10:47:33 +0800 Subject: [PATCH] build: AC_USE_SYSTEM_EXTENSIONS in configure.ac. This would, e.g. define _GNU_SOURCE in config.h, enabling the reallocarray() prototype in glibc 2.26+ on Linux systems with that version of glibc. Fixes #241. Backported from: 24fd0551333e7eded87b64dd36062da3df2f6380 Signed-off-by: Adrian Perez de Castro --- configure.ac | 2 ++ 1 file changed, 2 insertions(+) diff --git a/configure.ac b/configure.ac index 55e774b..c879fe1 100644 --- a/configure.ac +++ b/configure.ac @@ -25,8 +25,10 @@ # autoconf requirements and initialization AC_INIT([the fast lexical analyser generator],[2.6.4],[flex-help@lists.sourceforge.net],[flex]) +AC_PREREQ([2.60]) AC_CONFIG_SRCDIR([src/scan.l]) AC_CONFIG_AUX_DIR([build-aux]) +AC_USE_SYSTEM_EXTENSIONS LT_INIT AM_INIT_AUTOMAKE([1.11.3 -Wno-portability foreign check-news std-options dist-lzip parallel-tests subdir-objects]) AC_CONFIG_HEADER([src/config.h]) -- 2.14.1