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Re: Libtool can't find libgcc_s
From: |
Ralf Wildenhues |
Subject: |
Re: Libtool can't find libgcc_s |
Date: |
Wed, 10 Nov 2010 19:59:38 +0100 |
User-agent: |
Mutt/1.5.20 (2010-08-04) |
Hello Ethan,
* address@hidden wrote on Wed, Nov 10, 2010 at 07:48:14PM CET:
> Libtool seems to get confused about where libgcc_s is, e.g.,
>
> $ /bin/sh ../../../libtool --tag=CXX --mode=link icpc -lgcc_s foo.c -o a.out
> libtool: link: icpc foo.c -o a.out -lgcc_s
> ld: skipping incompatible
> /usr/lib/gcc/x86_64-redhat-linux/3.4.6//libgcc_s.so when searching for -lgcc_s
> ld: cannot find -lgcc_s
>
> If I help it out with my own -L, it works:
>
> $ /bin/sh ../../../libtool --tag=CXX --mode=link icpc
> -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2/32 -lgcc_s foo.c -o a.out
> libtool: link: icpc foo.c -o a.out
> -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2/32 -lgcc_s
>
> $ ../../../libtool --version
> ltmain.sh (GNU libtool) 2.2.6b
I think the first question to ask is why are you passing -lgcc_s in the
first place? The instance that decided that that would be necessary
should also decide which libgcc_s to use, and whether to prepend
suitable -L flags.
Aside, please pass -l flags after the objects that need the libraries,
that is guaranteed to work portably, i.e., also for static linking.
Cheers,
Ralf