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Message-ID: <CAEfvv4LfrAO-Lv88ReZSPaytV8TM-YQt_byOrwXOMPfyhjXP=g@mail.gmail.com>
Date: Thu, 21 Feb 2019 09:50:04 -0500
From: James Larrowe <larrowe.semaj11@...il.com>
To: musl@...ts.openwall.com, James Larrowe <larrowe.semaj11@...il.com>
Subject: Re: Re: [PATCH] Enable multilib support when building with musl-gcc
It was actually intended to fix building musl with "gcc -m32". If you run
"CC='gcc -m32' ./configure && make && sudo make install" and try to run
`musl-gcc`, it doesn't work and causes some "Incompatible architcture"
errors. If there's any way I can make this better, please let me know and
I'll resend the patch.
On Thu, Feb 21, 2019 at 9:44 AM Szabolcs Nagy <nsz@...t70.net> wrote:
> * James Larrowe <larrowe.semaj11@...il.com> [2019-02-21 09:22:26 -0500]:
> > Ping. Is there anything wrong with this? It works for me.
>
> it breaks all targets that musl supports except x86_64
>
> a multilib toolchain does not have separate include paths
> for different abis so even on x86_64, -m32 or -mx32
> would use the wrong headers.
>
> > On Wed, Jan 30, 2019 at 4:38 PM James Larrowe <larrowe.semaj11@...il.com
> >
> > wrote:
> >
> > > Somewhat incomplete; enables using 32-bit musl-gcc
> > > on a 64-bit system
> > >
> > > Signed-off-by: James Larrowe <larrowe.semaj11@...il.com>
> > > ---
> > > tools/musl-gcc.specs.sh | 4 +++-
> > > 1 file changed, 3 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/tools/musl-gcc.specs.sh b/tools/musl-gcc.specs.sh
> > > index 30492574..a73e6656 100644
> > > --- a/tools/musl-gcc.specs.sh
> > > +++ b/tools/musl-gcc.specs.sh
> > > @@ -23,7 +23,9 @@ libgcc.a%s %:if-exists(libgcc_eh.a%s)
> > > crtendS.o%s $libdir/crtn.o
> > >
> > > *link:
> > > --dynamic-linker $ldso -nostdlib %{shared:-shared} %{static:-static}
> > > %{rdynamic:-export-dynamic}
> > > +-dynamic-linker $ldso -nostdlib %{shared:-shared} %{static:-static} \
> > > + %{rdynamic:-export-dynamic} %{m64:-melf_x86_64}
> %{mx32:-melf32_x86_64} \
> > > + %{m32:-melf_i386}
> > >
> > > *esp_link:
> > >
> > > --
> > > 2.20.1
> > >
> > >
>
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