[cfe-dev] -B support in clang

[Shantonu Sen]

I have to ask: what are you really trying to do?

GCC's build system (which I assume where the libssp is being taken from) uses -B internally to override default search paths for the *uninstalled* xgcc. If you're trying to build libssp with a preinstalled compiler (either gcc or clang), -B is not appropriate, because the compiler will find whatever it needs in /usr/lib. In fact, overriding the paths with something pointing to a partial gcc build might do more harm than good.

Shantonu

Sent from my MacBook

On Oct 21, 2009, at 5:54 AM, steve naroff wrote:

> Hi Roman,
> 
> I don't believe it is currently supported. I found a FIXME below which relates to -B:
> 
> Compilation *Driver::BuildCompilation(int argc, const char **argv) {
>   llvm::PrettyStackTraceString CrashInfo("Compilation construction");
> 
>   // FIXME: Handle environment options which effect driver behavior, somewhere
>   // (client?). GCC_EXEC_PREFIX, COMPILER_PATH, LIBRARY_PATH, LPATH,
>   // CC_PRINT_OPTIONS.
> 
> snaroff
> 
> On Oct 21, 2009, at 8:41 AM, Roman Divacky wrote:
> 
>> hi
>> 
>> I am trying this command:
>> 
>> CC='clang -m32 -march=native -mfancy-math-387 -DCOMPAT_32BIT  -iprefix
>> /home/rdivacky/tmp//data/home/rdivacky/clangbsd/lib32/usr/
>> -L/home/rdivacky/tmp//data/home/rdivacky/clangbsd/lib32/usr/lib32
>> -B/home/rdivacky/tmp//data/home/rdivacky/clangbsd/lib32/usr/lib32' mkdep -f .depend -a    -DHAVE_CONFIG_H
>> -I/data/home/rdivacky/clangbsd/gnu/lib/libssp/libssp_nonshared/..
>> -I/data/home/rdivacky/clangbsd/gnu/lib/libssp/libssp_nonshared/../../../../contrib/gcclibs/libssp
>> -I/data/home/rdivacky/clangbsd/gnu/lib/libssp/libssp_nonshared/../../../../contrib/gcclibs/include -DPIC
>> /data/home/rdivacky/clangbsd/gnu/lib/libssp/libssp_nonshared/../../../../contrib/gcclibs/libssp/ssp-local.c
>> 
>> but it fails with:
>> 
>> clang: error: unsupported option '-B/home/rdivacky/tmp//data/home/rdivacky/clangbsd/lib32/usr/lib32'
>> 
>> 
>> so.. is -B supported? I tried to search for the option definitions but 
>> I failed badly :(
>> 
>> thank you, roman
>> _______________________________________________
>> cfe-dev mailing list
>> cfe-dev at cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev
> 
> _______________________________________________
> cfe-dev mailing list
> cfe-dev at cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/cfe-dev/attachments/20091021/21c144f6/attachment.html>