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buildroot/buildroot-2016.08.1/toolchain/toolchain-wrapper.mk 1.35 KB
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  # 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_OPTS = \
  	$(foreach f,$(call qstrip,$(BR2_TARGET_OPTIMIZATION)),"$(f)"$(comma))
  TOOLCHAIN_WRAPPER_ARGS += -DBR_ADDITIONAL_CFLAGS='$(TOOLCHAIN_WRAPPER_OPTS)'
  
  ifeq ($(BR2_CCACHE),y)
  TOOLCHAIN_WRAPPER_ARGS += -DBR_CCACHE
  endif
  
  ifeq ($(BR2_x86_x1000),y)
  TOOLCHAIN_WRAPPER_ARGS += -DBR_OMIT_LOCK_PREFIX
  endif
  
  ifeq ($(BR2_CCACHE_USE_BASEDIR),y)
  TOOLCHAIN_WRAPPER_ARGS += -DBR_CCACHE_BASEDIR='"$(BASE_DIR)"'
  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