From ffa886a580929f26fd5e5a40c9c5334955c48553 Mon Sep 17 00:00:00 2001
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From: Explorer09 <explorer09@gmail.com>
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Date: Mon, 4 Sep 2017 10:47:33 +0800
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Subject: [PATCH] build: AC_USE_SYSTEM_EXTENSIONS in configure.ac.
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This would, e.g. define _GNU_SOURCE in config.h, enabling the
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reallocarray() prototype in glibc 2.26+ on Linux systems with that
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version of glibc.
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Fixes #241.
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Backported from: 24fd0551333e7eded87b64dd36062da3df2f6380
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Signed-off-by: Adrian Perez de Castro <aperez@igalia.com>
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---
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configure.ac | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/configure.ac b/configure.ac
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index 55e774b..c879fe1 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -25,8 +25,10 @@
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# autoconf requirements and initialization
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AC_INIT([the fast lexical analyser generator],[2.6.4],[flex-help@lists.sourceforge.net],[flex])
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+AC_PREREQ([2.60])
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AC_CONFIG_SRCDIR([src/scan.l])
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AC_CONFIG_AUX_DIR([build-aux])
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+AC_USE_SYSTEM_EXTENSIONS
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LT_INIT
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AM_INIT_AUTOMAKE([1.11.3 -Wno-portability foreign check-news std-options dist-lzip parallel-tests subdir-objects])
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AC_CONFIG_HEADER([src/config.h])
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--
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2.14.1
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