From: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
To: crossgcc@sourceware.org
Cc: Morten Thunberg Svendsen <mts@doredevelopment.dk>,
Michael Hope <michael.hope@linaro.org>
Subject: [PATCH 0 of 6] Fix --with-float= for architectures that do not support it
Date: Fri, 25 Nov 2011 23:23:00 -0000 [thread overview]
Message-ID: <patchbomb.1322263345@treguer.bzh.lan> (raw)
In-Reply-To: <201111251813.01129.yann.morin.1998@anciens.enib.fr>
Hello All,
This patchset fixes (tries to fix) the floating point settings for
architectures that do not support it.
Previously, when hard-float was selected, no option was passed to
./configure, and no CFLAGS was set.
Since changeset #149c33923f47, hard-float sets --with-float=hard
as a configure option, and -mhard-float as a CFLAGS. This breaks
architectures for which these are not valid, which are all
except ARM, MIPS, PPC and SPARC; see:
http://gcc.gnu.org/viewcvs/trunk/gcc/config.gcc?revision=181079&view=markup
(via Morten Thunberg Svendsen <mts@doredevelopment.dk>)
What this patchset does, is simply hide the floating point mode
selection when the architecture does not support it. There is a
drawback, though: it is no longer possible to select soft-float
for the x86 architecture. On one hand, I think this is not too
bad, because x86 nowadays do have an FPU; OTOH, i386 and i486 may
lack an FPU, and they most likely are the kind of CPU one would
find in an x86-embedded product.
[PATCH 1/6] config/target: add float support selection
[PATCH 2/6] arch/arm: ARM supports setting the floating point type
[PATCH 3/6] arch/mips: MIPS supports setting the floating point type
[PATCH 4/6] arch/powerpc: PowerPC supports setting the floating point type
[PATCH 5/6] arch/sparc: Sparc supports setting the floating point type
[PATCH 6/6] config/target: enforce floating point support
As usual, comments welcome! :-)
Regards,
Yann E. MORIN.
PS. I'll be without internet access until Monday evening...
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next prev parent reply other threads:[~2011-11-25 23:23 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-19 2:29 [PATCH] scripts: add softfp support Michael Hope
2011-10-19 21:02 ` Yann E. MORIN
2011-10-20 0:30 ` Michael Hope
2011-10-21 2:17 ` Michael Hope
2011-11-01 23:42 ` [PATCH 0 of 4] Adding " Yann E. MORIN
2011-11-01 23:42 ` [PATCH 1 of 4] scripts: introduce float type as a string Yann E. MORIN
2011-11-25 12:20 ` Morten Thunberg Svendsen
2011-11-25 17:13 ` Yann E. MORIN
2011-11-25 23:23 ` Yann E. MORIN [this message]
2011-11-25 23:23 ` [PATCH 1 of 6] config/target: add float support selection Yann E. MORIN
2011-11-28 12:32 ` Thomas Petazzoni
2011-11-28 17:46 ` Yann E. MORIN
2011-11-25 23:23 ` [PATCH 3 of 6] arch/mips: MIPS supports setting the floating point type Yann E. MORIN
2011-11-25 23:23 ` [PATCH 2 of 6] arch/arm: ARM " Yann E. MORIN
2011-11-25 23:30 ` [PATCH 4 of 6] arch/powerpc: PowerPC " Yann E. MORIN
2011-11-25 23:30 ` [PATCH 6 of 6] config/target: enforce floating point support Yann E. MORIN
2011-11-25 23:30 ` [PATCH 5 of 6] arch/sparc: Sparc supports setting the floating point type Yann E. MORIN
2011-11-01 23:43 ` [PATCH 3 of 4] arch: add softfp support Yann E. MORIN
2011-11-01 23:43 ` [PATCH 2 of 4] scripts: use the hardfloat option to set configure and CFLAGS Yann E. MORIN
2011-11-01 23:50 ` [PATCH 4 of 4] arch/arm: ARM supports the softfp convention Yann E. MORIN
2011-11-07 20:40 ` [PATCH 0 of 4] Adding softfp support Yann E. MORIN
2011-11-09 0:48 ` Michael Hope
2011-11-09 19:01 ` Yann E. MORIN
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