From: Enrico Forestieri <forenr@lyx.org>
Date: Tue, 8 Sep 2015 23:54:49 +0000 (+0200)
Subject: Make it compile on cygwin in c++11 mode
X-Git-Tag: 2.2.0alpha1~358
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=bde1bee24e26b586b20eb3813396e2d49f1aee91;p=lyx.git

Make it compile on cygwin in c++11 mode

When using -std=c++11, the cygwin compiler automatically defines
__STRICT_ANSI__ which is used as a guard for not declaring essential
unix standard calls such as setenv, popen, etc. As a result,
compilation stops with errors such as "xxxx has not been declared".
By undefining the guard, compilation succeeds and lyx works Ok.
---

diff --git a/config/lyxinclude.m4 b/config/lyxinclude.m4
index 67a110b989..057caf491c 100644
--- a/config/lyxinclude.m4
+++ b/config/lyxinclude.m4
@@ -362,7 +362,8 @@ if test x$GXX = xyes; then
 	dnl the deprecated-register warning is very annoying with Qt4.x right now.
         AM_CXXFLAGS="$AM_CXXFLAGS -std=c++11 -Wno-deprecated-register";;
       *)
-        AM_CXXFLAGS="$AM_CXXFLAGS -std=c++11";;
+        AM_CXXFLAGS="$AM_CXXFLAGS -std=c++11"
+        AS_CASE([$host], [*cygwin*], [AM_CXXFLAGS="$AM_CXXFLAGS -U__STRICT_ANSI__"]);;
     esac
   fi