From: Peter Seiderer Date: Thu, 3 Mar 2016 15:17:31 +0100 Subject: [PATCH] Disable c++ standard compiler flags for the host build MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There is no test for c++ standard support for the host build (only for the target compiler/build) which leads to trouble in some cross compiling environments (old host compiler, new cross compiler): g++: error: unrecognized command line option ‘-std=c++1z’ So disable c++ standard compiler flags unconditionally for host builds. Task-number: QTBUG-51644 Change-Id: Ifb3042e125fe199a7e081740d1171d26ccacf0c5 Reviewed-by: Oswald Buddenhagen --- qtbase/mkspecs/features/default_post.prf | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/qtbase/mkspecs/features/default_post.prf b/qtbase/mkspecs/features/default_post.prf index cd8d8859aa91..561c8f4858cc 100644 --- a/qtbase/mkspecs/features/default_post.prf +++ b/qtbase/mkspecs/features/default_post.prf @@ -95,7 +95,10 @@ breakpad { !isEmpty(QMAKE_STRIP):QMAKE_POST_LINK = $$QMAKE_POST_LINK$$escape_expand(\\n\\t)$$quote($$QMAKE_STRIP $$DEBUGFILENAME) } -c++11|c++14|c++1z { +# Disable special compiler flags for host builds (needs to be changed for 5.7 +# to fall back to c++11 because since 5.7 c++11 is required everywhere, +# including host builds). +if(!host_build|!cross_compile):if(c++11|c++14|c++1z) { c++1z: cxxstd = CXX1Z else: c++14: cxxstd = CXX14 else: cxxstd = CXX11