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
[ 7%] Building CXX object
src/CMakeFiles/XrdUtils.dir/XrdSys/XrdSysIOEvents.cc.o
cd
/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_science_xrootd/xrootd/work/build/src
&& /opt/local/bin/clang++-mp-3.9 -DHAVE_ATOMICS -DHAVE_CRYPT
-DHAVE_ET_COM_ERR_H -DHAVE_GETIFADDRS -DHAVE_LIBZ -DHAVE_NAMEINFO
-DHAVE_READLINE -DHAVE_SSL -DHAVE_STRLCPY -DHAVE_TLS1 -DHAVE_TLS11
-DHAVE_TLS12 -DHAVE_XML2 -DHAVE_XRDCRYPTO -DLT_MODULE_EXT=\".dylib\"
-DUSE_LIBC_SEMAPHORE=0 -DXRDPLUGIN_SOVERSION=\"4\" -DXrdUtils_EXPORTS
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE
-D__macos__=1 -I/opt/local/include
-I/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_science_xrootd/xrootd/work/xrootd-4.7.0/src/..
-I/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_science_xrootd/xrootd/work/xrootd-4.7.0/src/.
-I/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_science_xrootd/xrootd/work/xrootd-4.7.0/src
-I/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_science_xrootd/xrootd/work/build/src
-I/usr/local/include -pipe -Os -stdlib=libstdc++ -std=c++0x
-Wno-deprecated-declarations -DNDEBUG -arch x86_64
-mmacosx-version-min=10.7 -fPIC -o
CMakeFiles/XrdUtils.dir/XrdSys/XrdSysIOEvents.cc.o -c
/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_science_xrootd/xrootd/work/xrootd-4.7.0/src/XrdSys/XrdSysIOEvents.cc
In file included from
/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_science_xrootd/xrootd/work/xrootd-4.7.0/src/XrdSys/XrdSysIOEvents.cc:36:
In file included from
/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_science_xrootd/xrootd/work/xrootd-4.7.0/src/./XrdSys/XrdSysIOEvents.hh:38:
/opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_science_xrootd/xrootd/work/xrootd-4.7.0/src/./XrdSys/XrdSysAtomics.hh:90:10:
fatal error: 'atomic' file not found
#include <atomic>
Is there any way around this ? As far as I understand things (which
could be wrong) this clang version should have support for atomics.
Indeed the file
/opt/local/libexec/llvm-3.9/lib/c++/v1/atomic
exists, as does a number of system locations
/usr/clang-ide/lib/c++/v1/atomic
/usr/lib/c++/v1/atomic
So why is the compilation not picking it up by default. The compiler
search paths are
> clang++-mp-3.9 -print-search-dirs
programs: =/opt/local/libexec/llvm-3.9/bin
libraries: =/opt/local/libexec/llvm-3.9/bin/../lib/clang/3.9.1
which indeed is missing the above.
I am not though that familiar with this sort of thing. Does anyone have
any suggestions on if this can be fixed or not ?
cheers Chris
