From 0fb14a2b1ab2f82ce63f4437b062229d73d90516 Mon Sep 17 00:00:00 2001 From: Marko Ratkaj Date: Tue, 19 Sep 2017 09:35:39 +0200 Subject: [PATCH] tools: flex: fix segfault with glibc 2.26+ 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 --- ...SE_SYSTEM_EXTENSIONS-in-configure.ac.patch | 27 +++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 tools/flex/patches/200-build-AC_USE_SYSTEM_EXTENSIONS-in-configure.ac.patch diff --git a/tools/flex/patches/200-build-AC_USE_SYSTEM_EXTENSIONS-in-configure.ac.patch b/tools/flex/patches/200-build-AC_USE_SYSTEM_EXTENSIONS-in-configure.ac.patch new file mode 100644 index 00000000000..7c3645c4747 --- /dev/null +++ b/tools/flex/patches/200-build-AC_USE_SYSTEM_EXTENSIONS-in-configure.ac.patch @@ -0,0 +1,27 @@ +From 24fd0551333e7eded87b64dd36062da3df2f6380 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. +--- + configure.ac | 2 ++ + 1 file changed, 2 insertions(+) + +--- 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])