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	Fix segmentation fault caused by implicit declaration of function 'reallocarray'. Added patch will enable reallocarray() prototype in glibc 2.26+ on Linux systems. This fix will be included in flex 2.6.5. Fixes LEDE issue: FS#1003 (Flex does not build with GCC 7.2) Signed-off-by: Marko Ratkaj <marko.ratkaj@sartura.hr>
		
			
				
	
	
		
			28 lines
		
	
	
		
			902 B
		
	
	
	
		
			Diff
		
	
	
	
	
	
			
		
		
	
	
			28 lines
		
	
	
		
			902 B
		
	
	
	
		
			Diff
		
	
	
	
	
	
From 24fd0551333e7eded87b64dd36062da3df2f6380 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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---
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 configure.ac | 2 ++
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 1 file changed, 2 insertions(+)
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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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