Date: Tue, 15 Dec 2015 14:36:40 +0200 From: Konstantin Belousov <kostikbel@gmail.com> To: Mark Millard <markmi@dsl-only.net> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org>, FreeBSD Toolchain <freebsd-toolchain@freebsd.org> Subject: Re: powerpc64 11.0-CURRENT's clang binds -m32 -mcpu=powerpc a.out to /libexec/ld-elf.so.1 Message-ID: <20151215123640.GG3625@kib.kiev.ua> In-Reply-To: <894D2513-6DE7-4E31-87A5-0529ECDF336C@dsl-only.net> References: <894D2513-6DE7-4E31-87A5-0529ECDF336C@dsl-only.net>
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On Mon, Dec 14, 2015 at 11:06:51PM -0800, Mark Millard wrote:
> # more main.c
> int main()
> {
> return 0;
> }
>
>
>
> # ls -l `which cc`
> -r-xr-xr-x 7 root wheel 54137976 Dec 14 00:06 /usr/bin/cc
>
> # cc --version
> FreeBSD clang version 3.7.0 (tags/RELEASE_370/final 246257) 20150906
> Target: powerpc64-unknown-freebsd11.0
> Thread model: posix
>
> # cc -m32 -mcpu=powerpc main.c
> # file a.out
> a.out: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (FreeBSD), dynamically linked, interpreter /libexec/ld-elf.so.1, FreeBSD-style, for FreeBSD 11.0 (1100091), not stripped
>
>
>
> By contrast powerpc64-gcc binds the a.out produced to /libexec/ld-elf32.so.1 instead:
>
> # ls -l `which gcc`
> lrwxr-xr-x 1 root wheel 48 Dec 5 05:38 /usr/bin/gcc -> /usr/local/bin/powerpc64-portbld-freebsd11.0-gcc
>
> # gcc --version
> gcc (FreeBSD Ports Collection for powerpc64) 5.2.0
> Copyright (C) 2015 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions. There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>
> # gcc -m32 -mcpu=powerpc main.c
> # file a.out
> a.out: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (FreeBSD), dynamically linked, interpreter /libexec/ld-elf32.so.1, FreeBSD-style, for FreeBSD 11.0 (1100091), not stripped
>
This is a bug in gcc, most likely in the spec file. All FreeBSD
ABIs use either /libexec/ld-elf.so.1 or (for older versions)
/usr/libexec/ld-elf.so.1.
>
> Context details:
>
> # freebsd-version -ku; uname -aKU
> 11.0-CURRENT
> 11.0-CURRENT
> FreeBSD FBSDG5C0 11.0-CURRENT FreeBSD 11.0-CURRENT #1 r291891M: Wed Dec 9 09:15:33 PST 2015 root@FBSDG5C0:/usr/obj/xtoolchain/powerpc.powerpc64/usr/src/sys/GENERIC64vtsc-NODEBUG powerpc 1100091 1100091
>
> # pkg info powerpc64-gcc
> powerpc64-gcc-5.2.0_1
> Name : powerpc64-gcc
> Version : 5.2.0_1
> Installed on : Wed Dec 9 02:18:14 2015 PST
> Origin : devel/powerpc64-gcc
> Architecture : freebsd:11:powerpc:64
> Prefix : /usr/local
> Categories : devel
> . . .
>
> ===
> Mark Millard
> markmi at dsl-only.net
>
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