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arch: allow GCC target options to be optionally overwritten

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The BR2_GCC_TARGET_* configuration variables are copied to
corresponding GCC_TARGET_* variables which may then be optionally
modified or overwritten by architecture specific makefiles.

All makefiles must use the new GCC_TARGET_* variables instead
of the BR2_GCC_TARGET_* versions.

Signed-off-by: Mark Corbin <mark.corbin@embecosm.com>
[Thomas: simplify include of arch/arch.mk]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Mark Corbin
2018-09-12 11:22:53 +01:00
committed by Thomas Petazzoni
parent 1eca624c03
commit bd0640a213
12 changed files with 52 additions and 38 deletions
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17
arch/arch.mk Normal file
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@@ -0,0 +1,17 @@
# Allow GCC target configuration settings to be optionally
# overwritten by architecture specific makefiles.
# Makefiles must use the GCC_TARGET_* variables below instead
# of the BR2_GCC_TARGET_* versions.
GCC_TARGET_ARCH := $(call qstrip,$(BR2_GCC_TARGET_ARCH))
GCC_TARGET_ABI := $(call qstrip,$(BR2_GCC_TARGET_ABI))
GCC_TARGET_NAN := $(call qstrip,$(BR2_GCC_TARGET_NAN))
GCC_TARGET_FP32_MODE := $(call qstrip,$(BR2_GCC_TARGET_FP32_MODE))
GCC_TARGET_CPU := $(call qstrip,$(BR2_GCC_TARGET_CPU))
GCC_TARGET_CPU_REVISION := $(call qstrip,$(BR2_GCC_TARGET_CPU_REVISION))
GCC_TARGET_FPU := $(call qstrip,$(BR2_GCC_TARGET_FPU))
GCC_TARGET_FLOAT_ABI := $(call qstrip,$(BR2_GCC_TARGET_FLOAT_ABI))
GCC_TARGET_MODE := $(call qstrip,$(BR2_GCC_TARGET_MODE))
# Include any architecture specific makefiles.
-include $(sort $(wildcard arch/arch.mk.*))