Opened 7 years ago

Closed 6 years ago

#37845 closed defect (worksforme)

gcc48: multilib support

Reported by: barto@… Owned by: mww@…
Priority: Normal Milestone:
Component: ports Version: 2.1.2
Keywords: Cc: jeremyhu (Jeremy Huddleston Sequoia)
Port: gcc48

Description (last modified by ryandesign (Ryan Schmidt))

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. 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:


and multilib is empty for all instances

. ;

When linking for 32 bits I get the following error:

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?

Change History (4)

comment:1 Changed 7 years ago by ryandesign (Ryan Schmidt)

Description: modified (diff)
Keywords: gcc removed
Owner: changed from macports-tickets@… to mww@…
Port: gcc48 added
Summary: multilib support in gcc48gcc48: multilib support

comment:2 Changed 7 years ago by mf2k (Frank Schima)

Cc: jeremyhu@… added

comment:3 Changed 7 years ago by jmroot (Joshua Root)

Installing gcc with +universal will get you a multilib build (#22116). Cf. #37463, #30240.

comment:4 Changed 6 years ago by jeremyhu (Jeremy Huddleston Sequoia)

Resolution: worksforme
Status: newclosed
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