51549 – gcc-3.4.0-r4 ebuild wrongly translates -mcpu to -mtune

Bug 51549 - gcc-3.4.0-r4 ebuild wrongly translates -mcpu to -mtune

Summary: gcc-3.4.0-r4 ebuild wrongly translates -mcpu to -mtune

Status:	RESOLVED FIXED

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	[OLD] GCC Porting (show other bugs)
Hardware:	x86 All

Importance:	High normal (vote)
Assignee:	Please assign to toolchain

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Depends on:
Blocks:	48528
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Reported:	2004-05-20 04:04 UTC by Felix Riemann
Modified:	2004-05-31 20:43 UTC (History)
CC List:	0 users

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Runtime testing required:	---

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Description Felix Riemann 2004-05-20 04:04:27 UTC

My CFLAGS contain "-mcpu=athlon-xp". Whe I try to emerge gcc-3.4.0-r4 the CFLAGSg et stripped down by the ebuild to "CFLAGS=" -march=athlon-xp -mtune=athlon-xp -pipe -O2" changing -mcpu to -mtune. gcc-3.3.3 doesn't support the -mtune-flag leading to a failing configure: 

"cc1: error: invalid option `tune=athlon-xp'
*** The command 'gcc -o conftest  -march=athlon-xp -mtune=athlon-xp -pipe -O2 conftest.c' failed.
*** You must set the environment variable CC to a working compiler."

Removing -mcpu from my CFLAGS keeps it working.

Portage 2.0.50-r6 (default-x86-1.4, gcc-3.3.3, glibc-2.3.3_pre20040420-r0, 2.6.6-love4)
=================================================================
System uname: 2.6.6-love4 i686 AMD Athlon(tm) XP
Gentoo Base System version 1.4.14
ccache version 2.3 [enabled]
Autoconf: sys-devel/autoconf-2.59-r3
Automake: sys-devel/automake-1.8.3
ACCEPT_KEYWORDS="x86 ~x86"
AUTOCLEAN="yes"
CFLAGS="-fexpensive-optimizations -fstack-protector -march=athlon-xp -mcpu=athlon-xp -msse -m3dnow -mmmx -ftracer -O4 -fomit-frame-pointer -finline-functions -falign-jumps=4 -falign-loops=4 -pipe"
CHOST="i686-pc-linux-gnu"
COMPILER="gcc3"

Comment 1 Travis Tilley (RETIRED) gentoo-dev

2004-05-29 19:58:24 UTC

hmm. sorry about that. try r5, it filters -mcpu completely. (mcpu breaks the build of gcc 3.4 at libiberty)