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* [Bug other/53891] New: CFLAGS set in configure don't propagate
@ 2012-07-08 2:41 jimis at gmx dot net
2012-07-08 3:06 ` [Bug other/53891] " pinskia at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: jimis at gmx dot net @ 2012-07-08 2:41 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53891
Bug #: 53891
Summary: CFLAGS set in configure don't propagate
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: other
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: jimis@gmx.net
In a standard autotooled application it is only necessary to set CFLAGS on the
./configure command or in the environment. In gcc this is not enough, and at
least BOOT_CFLAGS needs to be set on the make command line. For example the
following is not enough:
$ CFL="-O0 -g3 -fno-inline -march=i586"
$ export -p | grep FLAG
declare -x BOOT_CFLAGS="-O0 -g3 -fno-inline -march=i586"
declare -x BOOT_CXXFLAGS="-O0 -g3 -fno-inline -march=i586"
declare -x CFLAGS="-O0 -g3 -fno-inline -march=i586"
declare -x CXXFLAGS="-O0 -g3 -fno-inline -march=i586"
$ ~/path/to/gcc/configure --prefix=`pwd` --enable-checking=release
--disable-multilib --disable-plugins --enable-languages=c,c++ CFLAGS="$CFL"
BOOT_CFLAGS="$CFL" CXXFLAGS="$CFL" BOOT_CXXFLAGS="$CFL"
$ make
And I need this to actually get a final gcc compiled with my flags:
$ make BOOT_CFLAGS="$CFL" BOOT_CXXFLAGS="$CFL"
I think we should require setting the flags only on ./configure, and it would
also be nice if CFLAGS propagated aumatically to CXXFLAGS.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug other/53891] CFLAGS set in configure don't propagate
2012-07-08 2:41 [Bug other/53891] New: CFLAGS set in configure don't propagate jimis at gmx dot net
@ 2012-07-08 3:06 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-07-08 3:06 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53891
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-07-08 03:05:56 UTC ---
If you want a debuggable GCC there is a better way than using CFLAGS and
BOOT_CFLAGS and without using --disable-bootstrap. Do the following:
configure for a normal build
make all-gcc
cd gcc
make clean
make all
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2012-07-08 3:06 UTC | newest]
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2012-07-08 2:41 [Bug other/53891] New: CFLAGS set in configure don't propagate jimis at gmx dot net
2012-07-08 3:06 ` [Bug other/53891] " pinskia at gcc dot gnu.org
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