diff options
| author | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2014-10-21 22:27:13 +0200 |
|---|---|---|
| committer | Peter Korsgaard <peter@korsgaard.com> | 2014-11-07 00:13:49 +0100 |
| commit | 75418c4cf678a3c34352bd7a781296937815681d (patch) | |
| tree | 8d35b39a3f6bb3d8fb962a65320cef9e5e1e7a61 /arch/Config.in.powerpc | |
| parent | a5023c5204ad23323d21c1840a4ce7d99b7abf7d (diff) | |
arch/powerpc: get rid of BR2_GCC_TARGET_TUNE
According to the gcc documentation for PowerPC options:
'-mtune=CPU_TYPE'
Set the instruction scheduling parameters for machine type
CPU_TYPE, but do not set the architecture type, register usage, or
choice of mnemonics, as '-mcpu=CPU_TYPE' would. The same values
for CPU_TYPE are used for '-mtune' as for '-mcpu'. If both are
specified, the code generated will use the architecture, registers,
and mnemonics set by '-mcpu', but the scheduling parameters set by
'-mtune'.
In the case of Buildroot where we only target a specific system, using
-mtune therefore doesn't make much sense, and using -mcpu would be
more appropriate. As a consequence, this patch makes PowerPC use
BR2_GCC_TARGET_CPU instead of BR2_GCC_TARGET_TUNE.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Diffstat (limited to 'arch/Config.in.powerpc')
| -rw-r--r-- | arch/Config.in.powerpc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/Config.in.powerpc b/arch/Config.in.powerpc index 239f5dca1..fabee9f24 100644 --- a/arch/Config.in.powerpc +++ b/arch/Config.in.powerpc @@ -160,7 +160,7 @@ config BR2_ENDIAN config BR2_ARCH_HAS_ATOMICS default y -config BR2_GCC_TARGET_TUNE +config BR2_GCC_TARGET_CPU default "401" if BR2_powerpc_401 default "403" if BR2_powerpc_403 default "405" if BR2_powerpc_405 |