Need to change include path for clang

37,397

Try compiling as following,

clang++ -isystem /SOMEPATH/gcc-4.9.2/include/c++/4.9.2 -I/SOMEPATH/gcc-4.9.2/include/c++/4.9.2/x86_64-unknown-linux-gnu a.cpp

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Humble Debugger
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Humble Debugger

Algorithmic Trader / C/C++ Software Engineer

Updated on August 05, 2022

Comments

  • Humble Debugger
    Humble Debugger over 1 year

    When building with clang, it seems to be using gcc4.4.4 version of include files, while I want it to use newer ones.

    [ ~ ] locate move.h
    /home/apps/gcc_versions/gcc-4_8_install/include/c++/4.8.3/bits/move.h
    /usr/include/c++/4.4.4/bits/move.h
    /usr/local/include/c++/4.7.1/bits/move.h
    

    gcc path :

    `gcc -print-prog-name=cc1plus` -v
    ignoring nonexistent directory "/apps/gcc_versions/gcc-4_8_install/lib/gcc/x86_64-unknown-linux-gnu/4.8.3/../../../../x86_64-unknown-linux-gnu/include"
    #include "..." search starts here:
    #include <...> search starts here:
     /apps/gcc_versions/gcc-4_8_install/lib/gcc/x86_64-unknown-linux-gnu/4.8.3/../../../../include/c++/4.8.3
     /apps/gcc_versions/gcc-4_8_install/lib/gcc/x86_64-unknown-linux-gnu/4.8.3/../../../../include/c++/4.8.3/x86_64-unknown-linux-gnu
     /apps/gcc_versions/gcc-4_8_install/lib/gcc/x86_64-unknown-linux-gnu/4.8.3/../../../../include/c++/4.8.3/backward
     /apps/gcc_versions/gcc-4_8_install/lib/gcc/x86_64-unknown-linux-gnu/4.8.3/include
     /usr/local/include
     /apps/gcc_versions/gcc-4_8_install/include
     /apps/gcc_versions/gcc-4_8_install/lib/gcc/x86_64-unknown-linux-gnu/4.8.3/include-fixed
     /usr/include
    End of search list.
    

    And gcc includes work fine But with clang it fails

    [ ~ ] clang -v
    clang version 3.5 (http://llvm.org/git/clang.git 8e674ff884113429b53d23b18409caf67aaec1b7) (http://llvm.org/git/llvm.git 7add5421a686877e0aa87616b92b1f5a85c6feee)
    Target: x86_64-unknown-linux-gnu
    Thread model: posix
    Found candidate GCC installation: /usr/lib/gcc/i686-redhat-linux/4.4.4
    Found candidate GCC installation: /usr/lib/gcc/i686-redhat-linux/4.4.7
    Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.4.4
    Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.4.7
    Selected GCC installation: /usr/lib/gcc/x86_64-redhat-linux/4.4.7
    

    I am a newbie at this and please suggest if some info is missing that would help to resolve this.

  • user2023370
    user2023370 almost 8 years
    Thanks. For me, this was enough: clang++ -isystem /SOMEPATH/gcc-4.9.2/include/c++/4.9.2 a.cpp