Hi,
Thanks. In fact I tried adding
PortGroup cxx11 1.1
but that gave me the error below. Presumably I am missiong something else ?
cheers Chris
-- Check for working CXX compiler: /opt/local/bin/clang++-mp-3.9
-- Check for working CXX compiler: /opt/local/bin/clang++-mp-3.9 -- broken
CMake Error at
/opt/local/share/cmake-3.9/Modules/CMakeTestCXXCompiler.cmake:44 (message):
The C++ compiler "/opt/local/bin/clang++-mp-3.9" is not able to compile a
simple test program.
It fails with the following output:
Change Dir:
/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_science_xrootd/xrootd/work/build/CMakeFiles/CMakeTmp
Run Build Command:"/usr/bin/make" "cmTC_8f947/fast"
/usr/bin/make -f CMakeFiles/cmTC_8f947.dir/build.make
CMakeFiles/cmTC_8f947.dir/build
Building CXX object CMakeFiles/cmTC_8f947.dir/testCXXCompiler.cxx.o
/opt/local/bin/clang++-mp-3.9 -pipe -Os -D_GLIBCXX_USE_CXX11_ABI=0
-stdlib=macports-libstdc++ -arch x86_64 -mmacosx-version-min=10.7 -o
CMakeFiles/cmTC_8f947.dir/testCXXCompiler.cxx.o -c
/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_science_xrootd/xrootd/work/build/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
clang: error: invalid library name in argument
'-stdlib=macports-libstdc++'
make[1]: *** [CMakeFiles/cmTC_8f947.dir/testCXXCompiler.cxx.o] Error 1
make: *** [cmTC_8f947/fast] Error 2
On 28/09/17 15:51, Mojca Miklavec wrote:
Dear Chris,
On 28 September 2017 at 16:48, Chris Jones wrote:
Hi All,
I am investigating some build failures, with port that are being built with
macports clang 3.9 What I am seeing is on some older systems, OSX10.(6,7,8)
failures like
fatal error: 'atomic' file not found
#include <atomic>
Is there any way around this?
You need to compile against libc++ (that is: with -stdlib=libc++).
Or with the "cxx11 1.1" trick.
Mojca
