kumquat-buildroot/toolchain/toolchain-wrapper.mk
Arnout Vandecappelle d82f69cf10 infra: move ccache handling to the toolchain wrapper
Since we always have a toolchain wrapper now, we can move the ccache
call to the toolchain wrapper.

The hostcc ccache handling obviously stays.

The global addition of ccache to TARGET_CC/CXX is removed, but many
individual packages and infras still add it. This means we have a
chain like this: ccache -> toolchain-wrapper -> ccache -> gcc
However, this is fairly harmless: for cache misses, the inner ccache
just adds overhead and for cache hits, the inner ccache is never
called. Later patches will remove these redundant ccache calls.

As a side effect, perl now supports ccache as well.

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Danomi Manchego <danomimanchego123@gmail.com>
Cc: Károly Kasza <kaszak@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2015-10-04 18:22:20 +02:00

31 lines
1.1 KiB
Makefile

# This file contains the definition of the toolchain wrapper build commands
# We use --hash-style=both to increase the compatibility of the generated
# binary with older platforms, except for MIPS, where the only acceptable
# hash style is 'sysv'
ifeq ($(findstring mips,$(HOSTARCH)),mips)
TOOLCHAIN_WRAPPER_HASH_STYLE = sysv
else
TOOLCHAIN_WRAPPER_HASH_STYLE = both
endif
TOOLCHAIN_WRAPPER_ARGS = $($(PKG)_TOOLCHAIN_WRAPPER_ARGS)
TOOLCHAIN_WRAPPER_ARGS += -DBR_SYSROOT='"$(STAGING_SUBDIR)"'
# We create a list like '"-mfoo", "-mbar", "-mbarfoo"' so that each flag is a
# separate argument when used in execv() by the toolchain wrapper.
TOOLCHAIN_WRAPPER_ARGS += -DBR_ADDITIONAL_CFLAGS='$(foreach f,$(call qstrip,$(BR2_TARGET_OPTIMIZATION)),"$(f)",)'
ifeq ($(BR2_CCACHE),y)
TOOLCHAIN_WRAPPER_ARGS += -DBR_CCACHE
endif
# For simplicity, build directly into the install location
define TOOLCHAIN_BUILD_WRAPPER
$(Q)mkdir -p $(HOST_DIR)/usr/bin
$(HOSTCC) $(HOST_CFLAGS) $(TOOLCHAIN_WRAPPER_ARGS) \
-s -Wl,--hash-style=$(TOOLCHAIN_WRAPPER_HASH_STYLE) \
toolchain/toolchain-wrapper.c \
-o $(HOST_DIR)/usr/bin/toolchain-wrapper
endef