Hello again, I finally found out what was the issue. It was the *#line compiler directive*, that caused all the trouble
So it seems, that I cannot possibly make clang think that the header like below is a system one, so it would automatically suppress the warning: #line 1 "some/garbage" static char a = 0xfff; Could any one suggest how to force clang to ignore *#line* or to anyhow solve the problem? Regards, Pavel Chuprikov чт, 2 июн. 2016 г. в 4:28, Pavel Chuprikov <pschupri...@gmail.com>: > 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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