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* [Bug c/30691] New: i386 and x86-64 build options m32 and m64
@ 2007-02-03 13:12 beethoven3322 at hotmail dot com
2007-02-03 20:17 ` [Bug target/30691] " pinskia at gcc dot gnu dot org
0 siblings, 1 reply; 2+ messages in thread
From: beethoven3322 at hotmail dot com @ 2007-02-03 13:12 UTC (permalink / raw)
To: gcc-bugs
Under "Intel 386 and AMD x86-64 Options" are listed several different
parameters one can give to -march, such as i386,i486,pentium,prescott,etc. For
AMD64 users the special options -m32 and -m64 specify whether to build for 32
or 64 bit environments. Aren't both these options redundant? If you're building
on an amd64 then the default target architecture ought to be 64-bit, and if you
specify -march=i386 then presumably you want 32-bit code...
--
Summary: i386 and x86-64 build options m32 and m64
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: beethoven3322 at hotmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30691
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug target/30691] i386 and x86-64 build options m32 and m64
2007-02-03 13:12 [Bug c/30691] New: i386 and x86-64 build options m32 and m64 beethoven3322 at hotmail dot com
@ 2007-02-03 20:17 ` pinskia at gcc dot gnu dot org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-02-03 20:17 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2007-02-03 20:16 -------
No, they are not redudent.
Because you can do -m32 -march=k8 which means use the k8's 32bit features.
-m64 -march=i386 will be rejected as i386 does not have 64bit.
Also you can have a compile which defaults to 32bits and compile 64bits.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Component|c |target
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30691
^ permalink raw reply [flat|nested] 2+ messages in thread
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2007-02-03 13:12 [Bug c/30691] New: i386 and x86-64 build options m32 and m64 beethoven3322 at hotmail dot com
2007-02-03 20:17 ` [Bug target/30691] " pinskia at gcc dot gnu dot org
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