tdf#121131: Default COMPILER_PLUGINS_CXX to g++ -std=c++11
ab8bf5533f8de9bb1aa9dc83e650e4eccf0fcac3 "Avoid error message from configure
about clang's header for compiler plugins" caused problems after
cd472d1d8489f30797f47d3f6dafede28c1feb90 "Compile as C++2a, where available",
when the compiler used to build LO (CXX) supports -std=gnu++2a but the compiler
used to build loplugin (COMPILER_PLUGINS_CXX) does not. So solve that problem
instead by just adding -std=c++11 to the default for COMPILER_PLUGINS_CXX.
Change-Id: I95e86bc28f2a0dfb2b7bdce6b15955b870428b8c
Reviewed-on: https://gerrit.libreoffice.org/62997
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>
Tested-by: Jenkins
diff --git a/configure.ac b/configure.ac
index f6ba4a0..145505c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6723,9 +6723,9 @@ if test "$COM_IS_CLANG" = "TRUE"; then
save_CPPFLAGS=$CPPFLAGS
save_CXX=$CXX
# compiler plugins must be built with "native" compiler that was used to build Clang itself:
: "${COMPILER_PLUGINS_CXX=g++}"
: "${COMPILER_PLUGINS_CXX=g++ -std=c++11}"
CXX=$COMPILER_PLUGINS_CXX
CPPFLAGS="$CPPFLAGS $CXXFLAGS_CXX11 -I$CLANGDIR/include -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS"
CPPFLAGS="$CPPFLAGS -I$CLANGDIR/include -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS"
AC_CHECK_HEADER(clang/AST/RecursiveASTVisitor.h,
[COMPILER_PLUGINS=TRUE],
[
