Date: Tue, 29 Apr 2014 23:00:53 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: Co-existing i386 and x86_64 libraries? On Tue, Apr 29, 2014 at 10:20:05PM +0000, Oliver Schneider wrote: > Hi, > > short of setting different prefixes for each respective build, what > could I do to have two coexisting musl-libc libraries, one for -m64 and > one for -m32 builds on IA-32? > > The compiler (gcc in my case) supports the targets and the following > does the job on a 64-bit host: > > ../configure --enable-debug --target=i386 CFLAGS=-m32 CC="ccache gcc" As a general practice it's probably better to put the -m32 as part of $CC, but this should work too for musl. > However, I have yet to find a solution to having both builds live > peacefully together under the same "prefix" and the specs file used by > the GCC wrapper choosing the proper architecture. You need separate libdirs for each arch. This is fundamental; it's not specific to musl. > Any ideas how to accomplish this? > > Looking at the Makefile the way it stands, I reckon this is virtually > impossible. There are hardcoded library names used after including > config.mak, so overriding something like that inside config.mak is hopeless. Renaming the libraries is definitely not a viable solution. The names are all fixed because they have to be. > Thanks, > > // Oliver > > PS: on another note, the Makefile appears to use GNU-make-isms, wouldn't > it make sense to name it GNUmakefile in order to avoid it being picked > up by other make flavors? Or am I missing something here? We have some ppl involved with the project who are allergic to seeing the letters G, N, and U together anyhere... Rich
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