Re: [Fink-users] Many packages do not properly test for gcc-4.2 vs. llvm-gcc-4.2

My apologies for the oversight on the first test.

Perhaps linking gcc-4.2 and g++-4.2 to clang and clang++ respectively would be better? There are several packages that do not compile with the llvm tools (cdrtools, libvorbis0, gc are three that come to mind, but none of them suffer from the gcc detection problem previously described).


    --Matt



On Jan 7, 2012, at 15:22, Alexander Hansen wrote:

> On 1/7/12 1:40 PM, Matthew Bogosian wrote:
>> Many packages employ one the following (assumptive) tests to see if
>> gcc 4.2 is available:
>> 
>>> ... if test "$darwin_vers" = 9 ; then export CC=gcc-4.2 export
>>> CXX=g++-4.2 ...
> 
> That's perfectly acceptable.  Note that this is darwin_9_, i.e. OS
> 10.5, where (gcc|g++)-4.2 are available (for Xcode >= 3.1).
> 
>> 
>> -or-
>> 
>>> ... if [ "%m" == "x86_64" ]; then export CC=gcc-4.2 ...
>> 
>> This does not play well with llvm-based versions of Xcode (i.e.,
>> the above tests will succeed, but the subsequent builds will fail
>> because they can't find an executable named gXX-4.2). It's best to
>> test whether gXX-4.2 is callable before assuming it can be used
>> (most packages do this already).
>> 
>> The attached is probably both underinclusive and overinclusive, but
>> it's a pretty good start. The output is edited from the following:
>> 
>>> find /sw/fink/10.4 -name \*.info | xargs grep >|~/Desktop/out.txt
>>> -C 2 -n '[="'\'']g[c+][c+]-4\.2'
>> 
>> Creating symlinks somewhere in $PATH may help with some packages.
>> E.G.:
>> 
>>> for i in /usr/bin/llvm-*-4.2 ; do j="$(basename "${i}")" ; echo
>>> ln -s "${i}" "[e.g., /sw/bin]/${j#llvm-}" ; done
>> 
>> I hope this helps.
>> 
>> 
>> --Matt
>> 
>> 
>> 
> 
> (cc-ing fink-core)
> 
> Here are 2 options:
> 
> 1)  Packages which use "gcc-4.2" should all be fixed by their
> maintainers or others.
> 
> 2)  We could provide appropriately directed "gcc-4.2" and "g++-4.2"
> compiler wrappers as part of fink on 10.6 (basically the symlinks idea
> above).
> 
> -- 
> Alexander Hansen, Ph.D.
> Fink User Liaison
> http://finkakh.wordpress.com/


------------------------------------------------------------------------------
Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex
infrastructure or vast IT resources to deliver seamless, secure access to
virtual desktops. With this all-in-one solution, easily deploy virtual 
desktops for less than the cost of PCs and save 60% on VDI infrastructure 
costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox
_______________________________________________
fink-core mailing list
[email protected]
List archive:
http://news.gmane.org/gmane.os.apple.fink.core
Subscription management:
https://lists.sourceforge.net/lists/listinfo/fink-core