Opened 12 years ago
Last modified 11 years ago
#37845 closed defect
multilib support in gcc48 — at Initial Version
| Reported by: | barto@… | Owned by: | macports-tickets@… |
|---|---|---|---|
| Priority: | Normal | Milestone: | |
| Component: | ports | Version: | 2.1.2 |
| Keywords: | Cc: | ||
| Port: | gcc48 |
Description
I'm trying to compile code that must interact with a 3rd party 32 bit library, and I can't link it because -m32 is not supported in the latest gcc48 compiler. http://www.spinics.net/lists/gcchelp/msg36767.html indicates that when compiling and the error about 128 bit support appears it is due to not enabling multilib. Checking the specs on gcc48 shows: nomultidefs and multilib is empty for all instances
*multilib: . ; *multilib_defaults: *multilib_extra: *multilib_matches: *multilib_exclusions: *multilib_options: *multilib_reuse:
When linking for 32 bits I get the following error:
linking libmvpgemcomm32.so.7.0.0 ld: warning: ignoring file /opt/local/lib/gcc48/libstdc++.dylib, file was built for unsupported file format ( 0xcf 0xfa 0xed 0xfe 0x 7 0x 0 0x 0 0x 1 0x 3 0x 0 0x 0 0x 0 0x 6 0x 0 0x 0 0x 0 ) which is not the architecture being linked (i386): /opt/local/lib/gcc48/libstdc++.dylib
The code I'm using requires (now) the gcc std=c++11 code (mutex, condition_variable, futures, etc) so I can't use the older clang compiler. Any suggestions on getting 32 bit support built into gcc48 from macports?