Hello, I'm trying to compile a test library, that uses boost.asio using clang, But clang issues* a warning in a boost's header*, despite the fact that it is passed using "*-isystem*". I would be glad to investigate the problem further, but I just don't know where to dig, since everything seems OK to me.
I use NixOS linux distribution, so that's where all the other parameters are from (NixOS uses some kind of wrapper). But I don't see anything that could affect warnings. An output from a clang execution follows: clang version 3.7.1 (tags/RELEASE_371/final) Target: x86_64-unknown-linux-gnu Thread model: posix Found candidate GCC installation: /nix/store/d2ljpb414jpmzik3cvl0xlmr5m4aggp7-gcc-5.3.0/lib/gcc/x86_64-unknown-linux-gnu/5.3.0 Found candidate GCC installation: /nix/store/d2ljpb414jpmzik3cvl0xlmr5m4aggp7-gcc-5.3.0/lib64/gcc/x86_64-unknown-linux-gnu/5.3.0 Selected GCC installation: /nix/store/d2ljpb414jpmzik3cvl0xlmr5m4aggp7-gcc-5.3.0/lib64/gcc/x86_64-unknown-linux-gnu/5.3.0 Candidate multilib: .;@m64 Selected multilib: .;@m64 "/nix/store/x5v3p89l3i8v0jfnilr71yjv2vxqcfk5-clang-3.7.1/bin/clang-3.7" -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name test.cpp -mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -v -dwarf-column-info -coverage-file /home/pschuprikov/test/build/CMakeFiles/test.dir/test.o -nostdsysteminc -resource-dir /nix/store/x5v3p89l3i8v0jfnilr71yjv2vxqcfk5-clang-3.7.1/bin/../lib/clang/3.7.1 *-isystem /nix/store/n6q76296i7vv03a6w07ii5q17vgn331x-boost-1.59.0-dev/include* -idirafter /nix/store/bb32xf954imhdrzn7j8h82xs1bx7p3fr-glibc-2.23/include -idirafter /nix/store/x5v3p89l3i8v0jfnilr71yjv2vxqcfk5-clang-3.7.1/lib/gcc/*/*/include-fixed *-isystem /nix/store/n6q76296i7vv03a6w07ii5q17vgn331x-boost-1.59.0-dev/include* -isystem /nix/store/d2ljpb414jpmzik3cvl0xlmr5m4aggp7-gcc-5.3.0/include/c++/5.3.0 -isystem /nix/store/d2ljpb414jpmzik3cvl0xlmr5m4aggp7-gcc-5.3.0/include/c++/5.3.0/x86_64-unknown-linux-gnu -internal-isystem /nix/store/x5v3p89l3i8v0jfnilr71yjv2vxqcfk5-clang-3.7.1/bin/../lib/clang/3.7.1/include -Weverything -Wall -fdeprecated-macro -fdebug-compilation-dir /home/pschuprikov/test/build -ferror-limit 19 -fmessage-length 239 -mstackrealign -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -o CMakeFiles/test.dir/test.o -x c++ /home/pschuprikov/test/test.cpp clang -cc1 version 3.7.1 based upon LLVM 3.7.1 default target x86_64-unknown-linux-gnu ignoring nonexistent directory "/nix/store/x5v3p89l3i8v0jfnilr71yjv2vxqcfk5-clang-3.7.1/lib/gcc/*/*/include-fixed" ignoring duplicate directory "/nix/store/n6q76296i7vv03a6w07ii5q17vgn331x-boost-1.59.0-dev/include" #include "..." search starts here: #include <...> search starts here: /nix/store/n6q76296i7vv03a6w07ii5q17vgn331x-boost-1.59.0-dev/include /nix/store/d2ljpb414jpmzik3cvl0xlmr5m4aggp7-gcc-5.3.0/include/c++/5.3.0 /nix/store/d2ljpb414jpmzik3cvl0xlmr5m4aggp7-gcc-5.3.0/include/c++/5.3.0/x86_64-unknown-linux-gnu /nix/store/x5v3p89l3i8v0jfnilr71yjv2vxqcfk5-clang-3.7.1/bin/../lib/clang/3.7.1/include /nix/store/bb32xf954imhdrzn7j8h82xs1bx7p3fr-glibc-2.23/include End of search list. In file included from /home/pschuprikov/test/test.cpp:1: In file included from include/boost/system/error_code.hpp:15: *include/boost/cstdint.hpp:33:11: warning: macro name is a reserved identifier [-Wreserved-id-macro]* # define __STDC_CONSTANT_MACROS Thank you, Pavel Chuprikov
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