* Re: *FLAGS_FOR_BUILD vs cross-compiling
[not found] <200710061910.23606.vapier@gentoo.org>
@ 2007-10-07 4:25 ` Daniel Jacobowitz
2007-10-07 7:19 ` Paolo Bonzini
0 siblings, 1 reply; 5+ messages in thread
From: Daniel Jacobowitz @ 2007-10-07 4:25 UTC (permalink / raw)
To: Mike Frysinger; +Cc: binutils, gcc-patches
On Sat, Oct 06, 2007 at 07:10:23PM -0400, Mike Frysinger wrote:
> the toplevel configure.ac currently does:
> CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
> CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CFLAGS}}
> LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${CFLAGS}}
>
> there's two things wrong here ... first, the default for CXXFLAGS/LDFLAGS
> should be CXXFLAGS/LDFLAGS, not CFLAGS. the other is that FOR_BUILD
> variables should not default to the host flags if $host != $build. the
> program FOR_BUILD variables (like AR/RANLIB/etc...) already test this, but
> the *FLAGS do not. so if you try to build like:
> CFLAGS="-m4" ./configure --build=x86_64-... --host=sh4-... --target=sh4-...
> it'll fail if any build binaries need to be compiled (like the "chew" binary
> in bfd/doc/).
>
> the attached patch should rectify both of these issues.
These files are shared with gcc, so I've forwarded to gcc-patches
where more toplevel build reviewers tend to hang out. It seems
reasonable to me.
> -mike
>
> 2007-10-06 Mike Frysinger <vapier@gentoo.org>
>
> * configure.ac (CFLAGS_FOR_BUILD, CXXFLAGS_FOR_BUILD,
> LDFLAGS_FOR_BUILD): Default them to host flags only for $host = $build.
> Set default CXXFLAGS_FOR_BUILD to CXXFLAGS, not CFLAGS. Set default
> LDFLAGS_FOR_BUILD to LDFLAGS, not CFLAGS.
> * configure: Regenerate.
> 2007-10-06 Mike Frysinger <vapier@gentoo.org>
>
> * configure.ac (CFLAGS_FOR_BUILD, CXXFLAGS_FOR_BUILD,
> LDFLAGS_FOR_BUILD): Default them to host flags only for $host = $build.
> Set default CXXFLAGS_FOR_BUILD to CXXFLAGS, not CFLAGS. Set default
> LDFLAGS_FOR_BUILD to LDFLAGS, not CFLAGS.
> * configure: Regenerate.
>
> --- configure.ac 1 Oct 2007 07:55:47 -0000 1.30
> +++ configure.ac 6 Oct 2007 23:06:00 -0000
> @@ -2387,9 +2387,11 @@ esac
>
> # Allow the user to override the flags for
> # our build compiler if desired.
> -CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
> -CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CFLAGS}}
> -LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${CFLAGS}}
> +if test x"${build}" = x"${host}" ; then
> + CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD-${CFLAGS}}
> + CXXFLAGS_FOR_BUILD=${CXXFLAGS_FOR_BUILD-${CXXFLAGS}}
> + LDFLAGS_FOR_BUILD=${LDFLAGS_FOR_BUILD-${LDFLAGS}}
> +fi
>
> # On Canadian crosses, we'll be searching the right directories for
> # the previously-installed cross compiler, so don't bother to add
--
Daniel Jacobowitz
CodeSourcery
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: *FLAGS_FOR_BUILD vs cross-compiling
2007-10-07 4:25 ` *FLAGS_FOR_BUILD vs cross-compiling Daniel Jacobowitz
@ 2007-10-07 7:19 ` Paolo Bonzini
2007-10-07 15:30 ` Mike Frysinger
0 siblings, 1 reply; 5+ messages in thread
From: Paolo Bonzini @ 2007-10-07 7:19 UTC (permalink / raw)
To: Mike Frysinger, binutils, gcc-patches
>> 2007-10-06 Mike Frysinger <vapier@gentoo.org>
>>
>> * configure.ac (CFLAGS_FOR_BUILD, CXXFLAGS_FOR_BUILD,
>> LDFLAGS_FOR_BUILD): Default them to host flags only for $host = $build.
>> Set default CXXFLAGS_FOR_BUILD to CXXFLAGS, not CFLAGS. Set default
>> LDFLAGS_FOR_BUILD to LDFLAGS, not CFLAGS.
Yes, ok. Thanks, and sorry.
Paolo
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: *FLAGS_FOR_BUILD vs cross-compiling
2007-10-07 7:19 ` Paolo Bonzini
@ 2007-10-07 15:30 ` Mike Frysinger
2007-10-08 9:31 ` Nick Clifton
0 siblings, 1 reply; 5+ messages in thread
From: Mike Frysinger @ 2007-10-07 15:30 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: binutils, gcc-patches
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On Sunday 07 October 2007, Paolo Bonzini wrote:
> >> 2007-10-06 Mike Frysinger <vapier@gentoo.org>
> >>
> >> * configure.ac (CFLAGS_FOR_BUILD, CXXFLAGS_FOR_BUILD,
> >> LDFLAGS_FOR_BUILD): Default them to host flags only for $host = $build.
> >> Set default CXXFLAGS_FOR_BUILD to CXXFLAGS, not CFLAGS. Set default
> >> LDFLAGS_FOR_BUILD to LDFLAGS, not CFLAGS.
>
> Yes, ok. Thanks, and sorry.
so how does the committing work here ? i can commit in sourceware, but not
gcc ...
-mike
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: *FLAGS_FOR_BUILD vs cross-compiling
2007-10-07 15:30 ` Mike Frysinger
@ 2007-10-08 9:31 ` Nick Clifton
2007-10-08 11:30 ` Mike Frysinger
0 siblings, 1 reply; 5+ messages in thread
From: Nick Clifton @ 2007-10-08 9:31 UTC (permalink / raw)
To: Mike Frysinger; +Cc: Paolo Bonzini, binutils, gcc-patches
Hi Mike,
>>>> * configure.ac (CFLAGS_FOR_BUILD, CXXFLAGS_FOR_BUILD,
>>>> LDFLAGS_FOR_BUILD): Default them to host flags only for $host = $build.
>>>> Set default CXXFLAGS_FOR_BUILD to CXXFLAGS, not CFLAGS. Set default
>>>> LDFLAGS_FOR_BUILD to LDFLAGS, not CFLAGS.
>> Yes, ok. Thanks, and sorry.
>
> so how does the committing work here ? i can commit in sourceware, but not
> gcc ...
I have checked your patch into both the gcc and sourceware repositories.
Cheers
Nick
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: *FLAGS_FOR_BUILD vs cross-compiling
2007-10-08 9:31 ` Nick Clifton
@ 2007-10-08 11:30 ` Mike Frysinger
0 siblings, 0 replies; 5+ messages in thread
From: Mike Frysinger @ 2007-10-08 11:30 UTC (permalink / raw)
To: Nick Clifton; +Cc: Paolo Bonzini, binutils, gcc-patches
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On Monday 08 October 2007, Nick Clifton wrote:
> >>>> * configure.ac (CFLAGS_FOR_BUILD, CXXFLAGS_FOR_BUILD,
> >>>> LDFLAGS_FOR_BUILD): Default them to host flags only for $host =
> >>>> $build. Set default CXXFLAGS_FOR_BUILD to CXXFLAGS, not CFLAGS. Set
> >>>> default LDFLAGS_FOR_BUILD to LDFLAGS, not CFLAGS.
> >>
> >> Yes, ok. Thanks, and sorry.
> >
> > so how does the committing work here ? i can commit in sourceware, but
> > not gcc ...
>
> I have checked your patch into both the gcc and sourceware repositories.
ah, that works ... thanks :)
-mike
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^ permalink raw reply [flat|nested] 5+ messages in thread
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[not found] <200710061910.23606.vapier@gentoo.org>
2007-10-07 4:25 ` *FLAGS_FOR_BUILD vs cross-compiling Daniel Jacobowitz
2007-10-07 7:19 ` Paolo Bonzini
2007-10-07 15:30 ` Mike Frysinger
2007-10-08 9:31 ` Nick Clifton
2007-10-08 11:30 ` Mike Frysinger
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