* [PATCH] Enable multilib support when building with musl-gcc @ 2019-01-30 21:38 James Larrowe 2019-02-21 14:22 ` James Larrowe 0 siblings, 1 reply; 5+ messages in thread From: James Larrowe @ 2019-01-30 21:38 UTC (permalink / raw) To: musl; +Cc: James Larrowe Somewhat incomplete; enables using 32-bit musl-gcc on a 64-bit system Signed-off-by: James Larrowe <larrowe.semaj11@gmail.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 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] Enable multilib support when building with musl-gcc 2019-01-30 21:38 [PATCH] Enable multilib support when building with musl-gcc James Larrowe @ 2019-02-21 14:22 ` James Larrowe 2019-02-21 14:44 ` Szabolcs Nagy 0 siblings, 1 reply; 5+ messages in thread From: James Larrowe @ 2019-02-21 14:22 UTC (permalink / raw) To: musl [-- Attachment #1: Type: text/plain, Size: 942 bytes --] Ping. Is there anything wrong with this? It works for me. On Wed, Jan 30, 2019 at 4:38 PM James Larrowe <larrowe.semaj11@gmail.com> wrote: > Somewhat incomplete; enables using 32-bit musl-gcc > on a 64-bit system > > Signed-off-by: James Larrowe <larrowe.semaj11@gmail.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 > > [-- Attachment #2: Type: text/html, Size: 1742 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Re: [PATCH] Enable multilib support when building with musl-gcc 2019-02-21 14:22 ` James Larrowe @ 2019-02-21 14:44 ` Szabolcs Nagy 2019-02-21 14:50 ` James Larrowe 0 siblings, 1 reply; 5+ messages in thread From: Szabolcs Nagy @ 2019-02-21 14:44 UTC (permalink / raw) To: musl; +Cc: James Larrowe * James Larrowe <larrowe.semaj11@gmail.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@gmail.com> > wrote: > > > Somewhat incomplete; enables using 32-bit musl-gcc > > on a 64-bit system > > > > Signed-off-by: James Larrowe <larrowe.semaj11@gmail.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 > > > > ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Re: [PATCH] Enable multilib support when building with musl-gcc 2019-02-21 14:44 ` Szabolcs Nagy @ 2019-02-21 14:50 ` James Larrowe 2019-02-21 15:26 ` Rich Felker 0 siblings, 1 reply; 5+ messages in thread From: James Larrowe @ 2019-02-21 14:50 UTC (permalink / raw) To: musl, James Larrowe [-- Attachment #1: Type: text/plain, Size: 1744 bytes --] 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@port70.net> wrote: > * James Larrowe <larrowe.semaj11@gmail.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@gmail.com > > > > wrote: > > > > > Somewhat incomplete; enables using 32-bit musl-gcc > > > on a 64-bit system > > > > > > Signed-off-by: James Larrowe <larrowe.semaj11@gmail.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 > > > > > > > [-- Attachment #2: Type: text/html, Size: 2953 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Re: [PATCH] Enable multilib support when building with musl-gcc 2019-02-21 14:50 ` James Larrowe @ 2019-02-21 15:26 ` Rich Felker 0 siblings, 0 replies; 5+ messages in thread From: Rich Felker @ 2019-02-21 15:26 UTC (permalink / raw) To: musl On Thu, Feb 21, 2019 at 09:50:04AM -0500, James Larrowe wrote: > 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. When generating the musl-gcc wrapper, the -m32 is supposed to get inserted into it if -m32 was included in $CC. It looks like there's some reason this doesn't work without some linker flags also being passed, and the musl-gcc.specs file is overriding a link spec in a way that loses them. I'm not sure what the right fix it. It might be using the specfile mechanism to rename/clone an existing spec then including it at the beginning of the new one, with options at the end to override, rather than replacing the old one, but I'm not sure if that works here. Rich > On Thu, Feb 21, 2019 at 9:44 AM Szabolcs Nagy <nsz@port70.net> wrote: > > > * James Larrowe <larrowe.semaj11@gmail.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@gmail.com > > > > > > wrote: > > > > > > > Somewhat incomplete; enables using 32-bit musl-gcc > > > > on a 64-bit system > > > > > > > > Signed-off-by: James Larrowe <larrowe.semaj11@gmail.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 > > > > > > > > > > ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2019-02-21 15:26 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2019-01-30 21:38 [PATCH] Enable multilib support when building with musl-gcc James Larrowe 2019-02-21 14:22 ` James Larrowe 2019-02-21 14:44 ` Szabolcs Nagy 2019-02-21 14:50 ` James Larrowe 2019-02-21 15:26 ` Rich Felker
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