diff options
| author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2013-11-02 16:39:06 +0100 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2013-12-26 23:19:04 +0100 |
| commit | d3539dd53bf9e37538fd4d8b89783a11fded119f (patch) | |
| tree | f0d5d9575f91923a146b73247255c9c316170259 /arch/Config.in.arm | |
| parent | fe093f226c40dd0a3466fc8dfc779a936daee4cc (diff) | |
arch: pass cpu option instead of tune option on ARM
Currently, the ARM Config.in logic specifies values for
--with-arch/-march and --with-tune/-mtune, but not for
--with-cpu/-mcpu. However, this causes problems on ARMv4, because
specifying --with-arch=armv4t isn't enough to make gcc generate ARMv4
code: one should also pass --with-cpu=<some ARMv4 CPU>.
Moreover, since Buildroot is generally designed to generate code
specifically for the configured target, it makes sense to give our own
--with-cpu/-mcpu value instead of relying on the default value used by
gcc, and only do small optimizations with -mtune.
Reported-by: Adam Hussein <kryme76@yahoo.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Diffstat (limited to 'arch/Config.in.arm')
| -rw-r--r-- | arch/Config.in.arm | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/Config.in.arm b/arch/Config.in.arm index c0fabb7ca..dd5874439 100644 --- a/arch/Config.in.arm +++ b/arch/Config.in.arm @@ -341,7 +341,7 @@ config BR2_ENDIAN default "LITTLE" if BR2_arm default "BIG" if BR2_armeb -config BR2_GCC_TARGET_TUNE +config BR2_GCC_TARGET_CPU default "arm7tdmi" if BR2_arm7tdmi default "arm7tdmi" if BR2_arm720t default "arm7tdmi" if BR2_arm740t |