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From f6d0dc338fe867c1b064682ae7f15bffe019b306 Mon Sep 17 00:00:00 2001
From: Hubert Figuiere <hub@figuiere.net>
Date: Tue, 12 Apr 2016 02:55:47 +0000
Subject: [PATCH] Bug 13770 - Require C++11 from now on.
git-svn-id: svn+ssh://svn.abisource.com/svnroot/abiword/trunk@35197 bcba8976-2d24-0410-9c9c-aab3bd5fdfd6
Upstream-Status: Backport
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
ax_cxx_compile_stdcxx_11.m4 | 133 +++++++++++++++++++++++++++++++++++
configure.ac | 1 +
src/wp/ap/gtk/ap_UnixApp.cpp | 2 +-
3 files changed, 135 insertions(+), 1 deletion(-)
create mode 100644 ax_cxx_compile_stdcxx_11.m4
diff --git a/ax_cxx_compile_stdcxx_11.m4 b/ax_cxx_compile_stdcxx_11.m4
new file mode 100644
index 0000000..af37acd
--- /dev/null
+++ b/ax_cxx_compile_stdcxx_11.m4
@@ -0,0 +1,133 @@
+# ============================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_11.html
+# ============================================================================
+#
+# SYNOPSIS
+#
+# AX_CXX_COMPILE_STDCXX_11([ext|noext],[mandatory|optional])
+#
+# DESCRIPTION
+#
+# Check for baseline language coverage in the compiler for the C++11
+# standard; if necessary, add switches to CXXFLAGS to enable support.
+#
+# The first argument, if specified, indicates whether you insist on an
+# extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
+# -std=c++11). If neither is specified, you get whatever works, with
+# preference for an extended mode.
+#
+# The second argument, if specified 'mandatory' or if left unspecified,
+# indicates that baseline C++11 support is required and that the macro
+# should error out if no mode with that support is found. If specified
+# 'optional', then configuration proceeds regardless, after defining
+# HAVE_CXX11 if and only if a supporting mode is found.
+#
+# LICENSE
+#
+# Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
+# Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
+# Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 3
+
+m4_define([_AX_CXX_COMPILE_STDCXX_11_testbody], [
+ template <typename T>
+ struct check
+ {
+ static_assert(sizeof(int) <= sizeof(T), "not big enough");
+ };
+
+ typedef check<check<bool>> right_angle_brackets;
+
+ int a;
+ decltype(a) b;
+
+ typedef check<int> check_type;
+ check_type c;
+ check_type&& cr = static_cast<check_type&&>(c);
+
+ auto d = a;
+])
+
+AC_DEFUN([AX_CXX_COMPILE_STDCXX_11], [dnl
+ m4_if([$1], [], [],
+ [$1], [ext], [],
+ [$1], [noext], [],
+ [m4_fatal([invalid argument `$1' to AX_CXX_COMPILE_STDCXX_11])])dnl
+ m4_if([$2], [], [ax_cxx_compile_cxx11_required=true],
+ [$2], [mandatory], [ax_cxx_compile_cxx11_required=true],
+ [$2], [optional], [ax_cxx_compile_cxx11_required=false],
+ [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX_11])])dnl
+ AC_LANG_PUSH([C++])dnl
+ ac_success=no
+ AC_CACHE_CHECK(whether $CXX supports C++11 features by default,
+ ax_cv_cxx_compile_cxx11,
+ [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
+ [ax_cv_cxx_compile_cxx11=yes],
+ [ax_cv_cxx_compile_cxx11=no])])
+ if test x$ax_cv_cxx_compile_cxx11 = xyes; then
+ ac_success=yes
+ fi
+
+ m4_if([$1], [noext], [], [dnl
+ if test x$ac_success = xno; then
+ for switch in -std=gnu++11 -std=gnu++0x; do
+ cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch])
+ AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch,
+ $cachevar,
+ [ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS $switch"
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
+ [eval $cachevar=yes],
+ [eval $cachevar=no])
+ CXXFLAGS="$ac_save_CXXFLAGS"])
+ if eval test x\$$cachevar = xyes; then
+ CXXFLAGS="$CXXFLAGS $switch"
+ ac_success=yes
+ break
+ fi
+ done
+ fi])
+
+ m4_if([$1], [ext], [], [dnl
+ if test x$ac_success = xno; then
+ for switch in -std=c++11 -std=c++0x; do
+ cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch])
+ AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch,
+ $cachevar,
+ [ac_save_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS $switch"
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
+ [eval $cachevar=yes],
+ [eval $cachevar=no])
+ CXXFLAGS="$ac_save_CXXFLAGS"])
+ if eval test x\$$cachevar = xyes; then
+ CXXFLAGS="$CXXFLAGS $switch"
+ ac_success=yes
+ break
+ fi
+ done
+ fi])
+ AC_LANG_POP([C++])
+ if test x$ax_cxx_compile_cxx11_required = xtrue; then
+ if test x$ac_success = xno; then
+ AC_MSG_ERROR([*** A compiler with support for C++11 language features is required.])
+ fi
+ else
+ if test x$ac_success = xno; then
+ HAVE_CXX11=0
+ AC_MSG_NOTICE([No compiler with C++11 support was found])
+ else
+ HAVE_CXX11=1
+ AC_DEFINE(HAVE_CXX11,1,
+ [define if the compiler supports basic C++11 syntax])
+ fi
+
+ AC_SUBST(HAVE_CXX11)
+ fi
+])
diff --git a/configure.ac b/configure.ac
index 48228be..f7be7de 100644
--- a/configure.ac
+++ b/configure.ac
@@ -131,6 +131,7 @@ win_pkgs="$enchant_req"
AC_PROG_CC
AC_PROG_CXX
+AX_CXX_COMPILE_STDCXX_11(noext,mandatory)
#AC_PROG_OBJC
AC_PROG_INSTALL
# For libtool 1.5.x compatability (AC_PROG_LIBTOOL is deprecated version of LT_INIT)
diff --git a/src/wp/ap/gtk/ap_UnixApp.cpp b/src/wp/ap/gtk/ap_UnixApp.cpp
index 061a304..260f8e5 100644
--- a/src/wp/ap/gtk/ap_UnixApp.cpp
+++ b/src/wp/ap/gtk/ap_UnixApp.cpp
@@ -863,7 +863,7 @@ static bool is_so (const char *file) {
if (len < (strlen(G_MODULE_SUFFIX) + 2)) // this is ".so" and at least one char for the filename
return false;
const char *suffix = file+(len-3);
- if(0 == strcmp (suffix, "."G_MODULE_SUFFIX))
+ if(0 == strcmp (suffix, "." G_MODULE_SUFFIX))
return true;
return false;
}
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