On Tue, Sep 8, 2009 at 7:34 AM, Vladimir Prus
architecture=combined if you remove the -arch ppc64 from tools/darwin.jam:307-317).
Just to clarify, you now have:
arch-addr-flags darwin OPTIONS : combined : 32_64 : -arch i386 -arch ppc -arch x86_64 ;
and that builds "3-way" fat binary, and if you put back
-arch ppc64
it makes the compiler unhappy? How can I check if a compile is affected by
this problem/change?
basically yes, but it's a bit more tricky: if you remove -arch ppc64 but do not fix the -m64 issue, then -arch ppc64 still gets internally specified inside g++ because of the -m64 in combination with -arch ppc (as far as I can tell), and you get the same compile error as with -arch ppc64 present. But if you both remove -arch ppc64 *and* fix the -m64 issue, than it's building fine (except for math - see below). Not sure what you mean by ability to check. Do you want to know 1. how to check a particular build (like what error messages to look for), or do you want to know what 2. version of g++ it is that exhibits the problem? 1. with -arch ppc64 missing, but -m64 not fixed (i.e. present), the following happens: darwin.compile.c++ bin.v2/libs/signals/build/darwin-4.2.1/release/address-model-32_64/architecture-combined/threading-multi/trackable.o In file included from ./boost/config/no_tr1/utility.hpp:21, from ./boost/config/select_stdlib_config.hpp:20, from ./boost/config.hpp:40, from ./boost/type_traits/add_const.hpp:13, from ./boost/type_traits.hpp:13, from ./boost/signals/trackable.hpp:13, from libs/signals/src/trackable.cpp:12: /usr/include/c++/4.2.1/utility:65:28: error: bits/c++config.h: No such file or directory ... (many other errors) with -arch ppc64 present, and -m64 still not fixed (i.e. present): the same thing as above happens with -arch ppc64 present and -m64 fixed (i.e. not present): the same thing as above happens Finally, with -arch ppc64 missing and -m64 fixed (i.e. not present): compiles fine as for 2., I am on Snow Leopard (OS X 10.6), using the default compiler for Snow Leopard SDK, which is g++-4.2. However, just now I tried specifying explicitely g++-4.0, and -arch ppc64 worked on that one file (creating a 4-way object file) when -m64 was not present. When -m64 was present, it failed again (since -arch i386 -m64 produced one x86_64 output, -arch x86_64 produced second x86_64 output and lipo cannot merge 2 same archs into one universal object file/binary). But to be honest, I don't really know well what is the relationship between compiler versions, SDK versions, targeted OS versions and architectures supported etc., so I can't really suggest any "proper" solution (like using different g++ version based on targeted OS X etc.).
if $(model) = 32 { option = -m32 ; } else { if $(model) = 32_64 { } else { option = -m64 ; } }
Oh, bummer. I imagine that a simpler change would be to have:
if $(model) = 32 { option = -m32 ; } else if $(model) = 64 { option = -m64 ; }
?
You are right, I just did not want to get too fancy with an unfamiliar
programming language :-) (was not sure if this syntax was OK) (I tested your
variant and it obviously works)
However I experienced problem with boost.math@1.40, everything else seems to
build fine - only 2 targets failed, which I suppose are 2 math libraries. I
did not notice this since previously I was building only a subset of the
libraries. I pin-pointed the problem down to GCC's precompiled headers
(which math builds and uses) being architecture-dependent - see [1], section
"Architecture independence", and this compile error:
darwin.compile.c++.pch
bin.v2/libs/math/build/darwin-4.2.1/release/address-model-32_64/architecture-combined/threading-multi/../src/tr1/pch.hpp.gch
lipo: can't figure out the architecture type of:
/var/folders/hh/hh89RPWHGkKJgJC3Gy-ZZk+++TI/-Tmp-//ccVpqkGD.out
"g++" -x c++-header -O3 -finline-functions -Wno-inline -Wall -dynamic
-no-cpp-precomp -gdwarf-2 -arch i386 -arch ppc -arch x86_64 -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/address-model-32_64/architecture-combined/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/address-model-32_64/architecture-combined/threading-multi/../src/tr1/pch.hpp.gch...
...skipped