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compilingwithclang [2013/06/01 00:37] sanel created |
compilingwithclang [2015/10/03 14:54] |
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| - | ====== Compiling With Clang ====== | ||
| - | |||
| - | ===== Introduction ===== | ||
| - | |||
| - | In this short tutorial are described details about compiling edelib and | ||
| - | EDE with [[http://clang.llvm.org/|Clang]] compiler. It is assumed you | ||
| - | already have installed Clang version with needed libraries. | ||
| - | |||
| - | :!: This tutorial is assuming you have read InstallationHowTo and | ||
| - | have prepared needed libraries and tools. | ||
| - | |||
| - | ===== Compiling FLTK ===== | ||
| - | |||
| - | First we are going to compile FLTK. Clang can use libraries compiled | ||
| - | with gcc, so if you can install latest stable FLTK version as package | ||
| - | with your distribution package management system, feel free to do so. | ||
| - | |||
| - | However, if you would like to compile FLTK with Clang, first download | ||
| - | FLTK source code, unpack it and run the following commands in terminal: | ||
| - | |||
| - | <code> | ||
| - | $ cd fltk-<version> | ||
| - | $ export CC=clang | ||
| - | $ export CXX=clang++ | ||
| - | $ ./configure && make | ||
| - | </code> | ||
| - | |||
| - | or if you would like FLTK location on different place (default is | ||
| - | ''/usr/local'', use ''prefix'') parameter, like: | ||
| - | |||
| - | <code> | ||
| - | $ ./configure --prefix=/usr && make | ||
| - | </code> | ||
| - | |||
| - | and as superuser, run: | ||
| - | |||
| - | <code> | ||
| - | $ make install | ||
| - | </code> | ||
| - | |||
| - | ===== Compiling edelib ===== | ||
| - | |||
| - | edelib should be compiled without much of problems and compilation | ||
| - | commands are pretty much the same as for compiling FLTK (except you are | ||
| - | using ''jam'' as build tool). Here are they in the order: | ||
| - | |||
| - | <code> | ||
| - | $ cd edelib-<version> | ||
| - | $ export CC=clang | ||
| - | $ export CXX=clang++ | ||
| - | $ ./configure && jam | ||
| - | </code> | ||
| - | |||
| - | You can use ''prefix'' parameter for desired location. As superuser, | ||
| - | running: | ||
| - | |||
| - | <code> | ||
| - | $ jam install | ||
| - | </code> | ||
| - | |||
| - | will install edelib on desired location. | ||
| - | |||
| - | ===== Compiling EDE ===== | ||
| - | |||
| - | edelib compilation commands applies here too. However, if you are | ||
| - | starting to get strange errors like: | ||
| - | |||
| - | <code> | ||
| - | In file included from ActionMenu.cc:14: | ||
| - | In file included from /usr/bin/../lib/gcc/i686-redhat-linux/4.7.2/../../../../include/c++/4.7.2/iostream:39: | ||
| - | In file included from /usr/bin/../lib/gcc/i686-redhat-linux/4.7.2/../../../../include/c++/4.7.2/ostream:39: | ||
| - | In file included from /usr/bin/../lib/gcc/i686-redhat-linux/4.7.2/../../../../include/c++/4.7.2/ios:42: | ||
| - | In file included from /usr/bin/../lib/gcc/i686-redhat-linux/4.7.2/../../../../include/c++/4.7.2/bits/ios_base.h:40: | ||
| - | /usr/bin/../lib/gcc/i686-redhat-linux/4.7.2/../../../../include/c++/4.7.2/ext/atomicity.h:48:45: error: use of undeclared identifier '__ATOMIC_ACQ_REL' | ||
| - | { return __atomic_fetch_add(__mem, __val, __ATOMIC_ACQ_REL); } | ||
| - | ^ | ||
| - | /usr/bin/../lib/gcc/i686-redhat-linux/4.7.2/../../../../include/c++/4.7.2/ext/atomicity.h:52:38: error: use of undeclared identifier '__ATOMIC_ACQ_REL' | ||
| - | { __atomic_fetch_add(__mem, __val, __ATOMIC_ACQ_REL); } | ||
| - | ^ | ||
| - | </code> | ||
| - | |||
| - | you are probably running latest gcc version with little bit older Clang | ||
| - | version. If your distribution does not provide updated Clang package, | ||
| - | you can apply a small hack. | ||
| - | |||
| - | /!\ '''Please note how this hack can change how gcc works, so after you | ||
| - | change the given file, recompile EDE and revert those changes.''' | ||
| - | |||
| - | As superuser, open the file | ||
| - | ''/usr/include/c++/VERSION/PLATFORM-DISTRO/bits/c++config.h'', where | ||
| - | ''VERSION'' is gcc version (like 4.7.2) and ''PLATFORM-DISTRO'' is | ||
| - | distribution specific folder, like ''i686-redhat-linux''. Locate the | ||
| - | line: | ||
| - | |||
| - | <code cpp> | ||
| - | #define _GLIBCXX_ATOMIC_BUILTINS 1 | ||
| - | </code> | ||
| - | |||
| - | and comment it out, like: | ||
| - | |||
| - | <code cpp> | ||
| - | // #define _GLIBCXX_ATOMIC_BUILTINS 1 | ||
| - | </code> | ||
| - | |||
| - | which will disable gcc builtin atomic access functions. Recompile EDE | ||
| - | and install it, uncommenting above line. | ||
