[CMake] Undefined reference to __Unwind_Resume when building a universal binary with make on Mac OS X

[Pedro d'Aquino]

The problem wasn't related to the universal binaries, but to the SDK used
(10.5). I need to add "-mmacosx-version-min=10.5" to the compiler flags in
order to make it work.

Shouldn't this be handled automatically by CMake?

On Fri, Sep 10, 2010 at 8:46 AM, Pedro d'Aquino <budsbd at gmail.com> wrote:

> Hi everyone,
>
> I'm currently modifying an existing CMake-based project to build universal
> binaries on 10.6.4. Xcode 3.2.3 builds the new project fine, but the
> make-based compilation fails because of an undefined symbol,
> __Unwind_Resume.
>
> The actual command used for compiling each C++ file is (from VERBOSE=1):
> /usr/bin/c++    -Wall -Wno-multichar -O2 -g -Wall -Wno-multichar -arch i386
> -arch x86_64 -isysroot /Developer/SDKs/MacOSX10.5.sdk ....
>
> After all files are compiled successfully, linking fails with the following
> message:
>
> Undefined symbols:
>   "__Unwind_Resume", referenced from:
>       macosx::MacLibraryLoader::release(ILibraryInterface**)in
> mac_library_loader.cpp.o
>       macosx::MacLibraryLoader::getInterface()    in
> mac_library_loader.cpp.o
>       macosx::MacLibraryLoader::MacLibraryLoader(std::basic_string<char,
> std::char_traits<char>, std::allocator<char> > const&)in
> mac_library_loader.cpp.o
>       .....
>
> It seems __Unwind_Resume is referenced in just about every .cpp file I
> compile.
>
> The only change I've made from my original, i386-only project was add
>
> if(APPLE)
> SET(CMAKE_OSX_ARCHITECTURES "i386;x86_64")
>  set(CMAKE_OSX_SYSROOT /Developer/SDKs/MacOSX10.5.sdk)
> endif()
>
> Does anyone know what is going on?
>
> Thanks a lot,
>
> Pedro d'Aquino
>
>
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.cmake.org/pipermail/cmake/attachments/20100910/7e38a0e3/attachment.htm>