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Commit 83dee70c authored by Luca Stefani's avatar Luca Stefani
Browse files

kernel: Allow specifying a custom linker binary 

* This is needed for using LLVM LLD ( and ThinLTO )

Change-Id: If603274326f0ff22f967455847ffe1c595f04aa5
parent 0b501d53

build/tasks/kernel.mk

+6 −1
Original line number Diff line number Diff line
@@ -43,6 +43,8 @@ 
#

#   KERNEL_CC                          = The C Compiler used. This is automatically set based

#                                          on whether the clang version is set, optional.

#   KERNEL_LD                          = The Linker used. This is automatically set based

#                                          on whether the clang/gcc version is set, optional.

#

#   KERNEL_CLANG_TRIPLE                = Target triple for clang (e.g. aarch64-linux-gnu-)

#                                          defaults to arm-linux-gnu- for arm
@@ -183,6 +185,9 @@ ifeq ($(TARGET_KERNEL_CLANG_COMPILE),true) 
    ifeq ($(KERNEL_CC),)

        KERNEL_CC := CC="$(CCACHE_BIN) clang"

    endif

    ifeq ($(KERNEL_LD),)

        KERNEL_LD :=

    endif

endif



ifneq ($(TARGET_KERNEL_MODULES),)
@@ -200,7 +205,7 @@ KERNEL_ADDITIONAL_CONFIG_OUT := $(KERNEL_OUT)/.additional_config 
# $(1): output path (The value passed to O=)

# $(2): target to build (eg. defconfig, modules, dtbo.img)

define internal-make-kernel-target

$(PATH_OVERRIDE) $(KERNEL_MAKE_CMD) $(KERNEL_MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_BUILD_OUT_PREFIX)$(1) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) $(2)

$(PATH_OVERRIDE) $(KERNEL_MAKE_CMD) $(KERNEL_MAKE_FLAGS) -C $(KERNEL_SRC) O=$(KERNEL_BUILD_OUT_PREFIX)$(1) ARCH=$(KERNEL_ARCH) $(KERNEL_CROSS_COMPILE) $(KERNEL_CLANG_TRIPLE) $(KERNEL_CC) $(KERNEL_LD) $(2)

endef



# Make a kernel target