Date: Sun, 17 Jun 2012 19:24:01 +0200 From: Bruno Haible <bruno@...sp.org> To: Rich Felker <dalias@...ifal.cx>, musl@...ts.openwall.com Subject: installation on bi-arch system Hi, Trying to install musl-0.9.1 as a 32-bit library on a bi-arch x86_64 glibc system. The usual way to configure packages for this configuration is ./configure CC="gcc -m32" or CC="gcc -m32" ./configure See <http://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.69/html_node/Preset-Output-Variables.html>. But this does not work with musl's configure script: $ CC="gcc -m32" ./configure --prefix=/arch/x86-linux/inst-musl --exec-prefix=/arch/x86-linux/inst-musl CC="gcc -m32" checking for C compiler... gcc -m32 checking whether compiler is gcc... no checking target system type... unknown ./configure: unable to detect target arch; try ./configure --target=... As a workaround, I have to create a wrapper script that invokes "gcc -m32 ..." and pass that as CC. This should not be needed. Additionally, the musl-gcc script that gets created by "make install" looks like this: #!/bin/sh exec gcc "$@" -specs "/arch/x86-linux/inst-musl/lib/musl-gcc.specs" When invoked with option "-c", it produces 64-bit .o files. To produce 32-bit .o files, it should read like this: #!/bin/sh exec gcc-32 "$@" -specs "/arch/x86-linux/inst-musl/lib/musl-gcc.specs" or like this: #!/bin/sh exec gcc -m32 "$@" -specs "/arch/x86-linux/inst-musl/lib/musl-gcc.specs" Bruno
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