[boost] Fwd: linking on OSX

Subject: [boost] Fwd: linking on OSX
From: David M. Cotter (me_at_[hidden])
Date: 2009-10-21 01:35:30

seems that when i build now (whether with the cmd that worked before,  
OR if i add the cpusubtype_ALL flag), it always fails:

...found 20863 targets...
...updating 274 targets...
darwin.compile.c++.pch bin.v2/libs/math/build/darwin-4.2.1/release/ 
architecture-combined/macosx-version-min-10.4/threading-multi/../src/ 
tr1/pch.hpp.gch
lipo: can't figure out the architecture type of: /var/folders/h7/ 
h7zL6S-RECGa80fEMYXIpk+++TI/-Tmp-//ccrtgIl2.out

     "g++" -x c++-header -O3 -finline-functions -Wno-inline -Wall - 
mmacosx-version-min=10.4 -dynamic -no-cpp-precomp -gdwarf-2 -arch i386  
-arch ppc -fPIC  -DBOOST_ALL_NO_LIB=1 -DBOOST_BUILD_PCH_ENABLED - 
DBOOST_MATH_TR1_DYN_LINK=1 -DNDEBUG -I"." -I"libs/math/src/tr1" -c -o  
"bin.v2/libs/math/build/darwin-4.2.1/release/architecture-combined/ 
macosx-version-min-10.4/threading-multi/../src/tr1/pch.hpp.gch" "libs/ 
math/build/../src/tr1/pch.hpp"

...failed darwin.compile.c++.pch bin.v2/libs/math/build/darwin-4.2.1/ 
release/architecture-combined/macosx-version-min-10.4/threading- 
multi/../src/tr1/pch.hpp.gch...
...skipped <pbin.v2/libs/math/build/darwin-4.2.1/release/architecture- 
combined/macosx-version-min-10.4/threading-multi>assoc_laguerre.o for  
lack of <pbin.v2/libs/math/build/darwin-4.2.1/release/architecture- 
combined/macosx-version-min-10.4/threading-multi>../src/tr1/ 
pch.hpp.gch...
...<a bunch more like above>
...failed updating 4 targets...
...skipped 270 targets...
 >

so it's not building at all.  why is it now skipping all targets?
sorry i'm kindof a n00b at this

> well, no i meant bjam
>
> is "boost.build" another name for "bjam" ??
>
> this is what i use to  build boost right now:
>
> > ./bjam macosx-version-min=10.4 architecture=combined install
>
> so are you saying i can do this?
>
> > ./bjam macosx-version-min=10.4 architecture=combined linkflags="- 
> force_cpusubtype_ALL" install
>
> ?
>
> On Oct 20, 2009, at 10:10 PM, Vladimir Prus wrote:
>
>> David M. Cotter wrote:
>>
>>> from Chris again:
>>>
>>>> Just to follow up on this: there appears to be some odd (or at  
>>>> least
>>>> non-obvious) behaviour with the linker in Xcode 3.2. If you set the
>>>> deployment target to 10.3, the resulting architecture ends up as
>>>> ppc7400 whereas 10.4 will give you ppc. (10.5 and 10.6 give you
>>>> ppc7400.)
>>>>
>>>> Anyway, if you know your code will work on all PowerPC CPU  
>>>> subtypes,
>>>> it looks like you could use the -force_cpusubtype_ALL linker flag  
>>>> (I
>>>> haven't tried it).
>>>
>>> again: how do i do this using bjam?
>>
>> I think you meant "using Boost.Build". There are cflags and  
>> linkflags properties
>> that you can specify on the command line. E.g.
>>
>>        linkflags="-force_cpusubtype_ALL"
>>
>> Does this help?
>>
>> - Volodya