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paolog
n00b
Joined: 10 Nov 2004
Posts: 2
Location: Crema, Italy
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 Posted: Sat Nov 13, 2004 2:04 pm Post subject: 32 bit executables - static linking |
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I need to compile on my new AMD64 workstation a program that mixes C with x86 assembly, and link it statically with several libraries (for example libpcre). Compiling the sources with the -m32 flag works flawlessly, but linking fails.
I reduced the problem to this minimalistic example:
| Code: | #include <stdio.h>
int main(int argc, char **argv)
{
printf("Sizeof long: %d\n", sizeof(long));
}
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When linking, I get the following error:
| Code: | $ gcc --static example.c -m32 -lpcre
/usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.3.4/../../../../x86_64-pc-linux-gnu/bin/ld:
skipping incompatible /usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.3.4/../../../libpcre.a when searching for -lpcre
/usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.3.4/../../../../x86_64-pc-linux-gnu/bin/ld:
skipping incompatible /usr/lib/libpcre.a when searching for -lpcre
/usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.3.4/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lpcre
collect2: ld returned 1 exit status
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How can I build a 32 bit version of libpcre (and the other libraries I need) under /usr/lib32?
Some background information on my system:
| Code: | $ gcc -v
Reading specs from /usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.3.4/specs
Configured with: /var/tmp/portage/gcc-3.3.4-r1/work/gcc-3.3.4/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/3.3 --includedir=/usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.3.4/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/3.3 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/3.3/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/3.3/info --enable-shared --host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu --with-system-zlib --enable-languages=c,c++,f77 --enable-threads=posix --enable-long-long --disable-checking --disable-libunwind-exceptions --enable-cstdio=stdio --enable-version-specific-runtime-libs --with-gxx-include-dir=/usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.3.4/include/g++-v3--with-local-prefix=/usr/local --enable-shared --enable-nls --without-included-gettext --enable-multilib --enable-__cxa_atexit --enable-clocale=generic
Thread model: posix
gcc version 3.3.4 20040623 (Gentoo Linux 3.3.4-r1, ssp-3.3.2-2, pie-8.7.6)
$ cat /ect/make.conf
# These settings were set by the catalyst build script that automatically builtthis stage
# Please consult /etc/make.conf.example for a more detailed example
CFLAGS="-O2"
CHOST="x86_64-pc-linux-gnu"
CXXFLAGS="${CFLAGS}"
MAKEOPTS="-j2"
GENTOO_MIRRORS="http://mirror.switch.ch/mirror/gentoo/ http://gentoo.inode.at/ http://trumpetti.atm.tut.fi/gentoo/"
USE="alsa doc dvd cdr sockets crypt cups dbm dvdr dbx emacs gd gnome gphoto2 imagemagick java kde mbox mime mozilla multilib mysql opengl oss pam pcre pdflib perl png qt quicktime readline spell tcpd tetex theora tiff truetype unicode usb xmms zlib"
ALSA_CARDS="emu10k1"
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Thanks in advance for your help. |
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paolog
n00b
Joined: 10 Nov 2004
Posts: 2
Location: Crema, Italy
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| Posted: Sun Nov 14, 2004 8:11 am Post subject: Clarification |
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I managed to compile 32 bit versions of the libraries I needed, as follows:
| Code: | $ tar xjf /usr/portage/distfiles/foo-1.2.3.tar.bz2
$ cd foo-1.2.3
$ CFLAGS="-m32 (other_flags)" LDFLAGS=-m32 ./configure
$ make
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and then I installed the contents of .libs into /usr/lib32/ by hand.
What I'd like to know is, is there a standard way to automate the process and integrate it into emerge? |
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Gentoo on AMD64
