clang support

[jf---]

I noticed that in osx 10.7 python is built with LLVM. Is it worthwhile to test OCE support for this compiler?

[tpaviot]

Yes it is! Can you paste the output from gcc -v?

[jf---]

Yes it is! Can you paste the output from gcc -v?

let me download & install the new Xcode...

[jf---]

jelle_laptop:~ localadmin$ gcc -v
Using built-in specs.
Target: i686-apple-darwin11
Configured with:
/private/var/tmp/llvmgcc42/llvmgcc42-2335.1525/src/configure
--disable-checking --enable-werror --prefix=/Developer/usr/llvm-gcc-4.2
--mandir=/share/man --enable-languages=c,objc,c++,obj-c++
--program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/
--with-slibdir=/usr/lib --build=i686-apple-darwin11
--enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2335.1525/dst-llvmCore/Developer/usr/local
--program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11
--target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1
Thread model: posix
gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)
jelle_laptop:~ localadmin$

[dbarbier]

Successfully tested on Linux. It emits less warnings than GCC, I will focus on fixing these ones first.

[jf---]

Successfully tested on Linux. It emits less warnings than GCC, I will
focus on fixing these ones first.

?! that was amazingly quick!
Thanks for sharing that result...

[dbarbier]

Update: it worked on an amd64 box, but fails now on x86

Linking CXX shared library Unix/i686-Release-32/libTKService.so
/usr/bin/ld: CMakeFiles/TKService.dir/__/__/__/src/PlotMgt/PlotMgt_fillpolyarc.cxx.o: relocation R_386_GOTOFF against undefined symbol `sin@@GLIBC_2.0' can not be used when making a shared object
/usr/bin/ld: final link failed: Bad value
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [adm/cmake/TKService/Unix/i686-Release-32/libTKService.so.0.0.0] Erreur 1
make[1]: *** [adm/cmake/TKService/CMakeFiles/TKService.dir/all] Erreur 2

Systems are quite different, so this may not be due to different architectures.

[dbarbier]

This is a clang bug on x86, see
http://llvm.org/bugs/show_bug.cgi?id=10022

[dbarbier]

Fortunately there is a trivial workaround, fix committed at b710256. I am closing this issue, please file a new one if there are problems with clang support.
Thanks for your suggestion.

[jf---]

Amazing work Denis, wonderful to see this realized so lightning fast!