Date: Thu, 9 Apr 2015 22:40:12 -0600 From: Warner Losh <imp@bsdimp.com> To: Mark Millard <markmi@dsl-only.net> Cc: freebsd-toolchain@freebsd.org, FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: Shorter version: -m elf32ppc_fbsd (and elf_i386_fbsd ?) vs. -Wl, -m, elf32ppc_fbsd problems (11.0-CURRENT and 10.1-STABLE) Message-ID: <95515F28-A077-4245-90CC-85235C58CAC5@bsdimp.com> In-Reply-To: <FB904F08-081F-4905-B46B-A53F117CA5BF@dsl-only.net> References: <0D8F0A9A-593E-4FEE-8F01-20799DE946B2@dsl-only.net> <FB904F08-081F-4905-B46B-A53F117CA5BF@dsl-only.net>
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> On Apr 9, 2015, at 8:40 PM, Mark Millard <markmi@dsl-only.net> wrote:
>
> I now see one place where "-Wl,-m,elf32ppc_fbsd" type of notation in LDFLAGS would not be handled if it ended up involved:
>
> share/mk/sys.mk:_LDFLAGS = ${LDFLAGS:S/-Wl,//g} # strip -Wl, for LD
>
> This notation does not deal with turning the extra comma back into a space.
It should be "-Wl,-m -Wl,elf32ppc_fbsd” since that’s the same, isn’t it? That’s what it will do. And that’s correct.
Warner
> ===
> Mark Millard
> markmi at dsl-only.net
>
> On 2015-Apr-9, at 06:56 PM, Mark Millard <markmi at dsl-only.net> wrote:
>
> From share/mk/bsd.README :
>
> LDFLAGS Additional loader flags. Passed to the loader via CC,
> since that's used to link programs as well, so loader
> specific flags need to be prefixed with -Wl, to work.
>
> But the following 3 powerpc (non-64) examples do not use the -Wl, notation:
>
>> LDFLAGS+= -m elf32ppc_fbsd
>> /usr/src/sys/boot/ofw/Makefile.inc
>
>
>> LDFLAGS+= -m elf32ppc_fbsd
>> /usr/src/sys/boot/uboot/Makefile.inc
>
>
>> LDFLAGS+= -m elf32ppc_fbsd
>> /usr/src/sys/boot/powerpc/Makefile.inc
>
> In fact I get errors such as (for that last one when using powerpc64-gcc via powerpc64-xtoolchain-gcc, executed on a powerpc64):
>
>> powerpc64-portbld-freebsd11.0-gcc: error: elf32ppc_fbsd: No such file or directory
>> powerpc64-portbld-freebsd11.0-gcc: error: elf32ppc_fbsd: No such file or directory
>> powerpc64-portbld-freebsd11.0-gcc: error: unrecognized command line option '-m'
>> powerpc64-portbld-freebsd11.0-gcc: error: unrecognized command line option '-m'
>>
>> *** [boot1.elf] Error code 1
>>
>> make[6]: stopped in /usr/srcC/sys/boot/powerpc/boot1.chrp
>> 1 error
>
> I do not know if the space between -m and elf... creates a problem for -Wl, use or not. I would guess that
>
> -Wl,-m,elf32pcc_fbsd
>
> is the proper notation for putting the space through to the ld variant used. But I’m not to the point of testing the behavior of that yet.
>
>
>
> i386 seems to have a similar example, although I’m not using such a FreeBSD environment.
>
>> LD_FLAGS+= -m elf_i386_fbsd
>> /usr/src/sys/boot/i386/Makefile.inc
>
>
>
> (This note is shorter in part because figured out more context than I had last time.)
>
> ===
> Mark Millard
> markmi at dsl-only.net
>
>
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