LLVMInitializeAMDGPU* functions need to be explicitly declared
and mesa expects them via <llvm-c/Target.h> header,
but LLVM needs to be instructed to invoke its own LLVM_TARGET(AMDGPU) macro,
or the functions will not be available.
A new llvm cflag (-DFORCE_BUILD_AMDGPU) serves this purpose,
the same mechanism is used also by other llvm targets e.g. FORCE_BUILD_ARM
A necessary prerequisite is to have AMDGPU target handled accordingly
in llvm config files i.e. {Target,AsmParser,AsmPrinter}.def
for llvm device build includes.
This avoids the following building errors:
external/mesa/src/amd/common/ac_llvm_util.c:43:2: error: implicit declaration
of function 'LLVMInitializeAMDGPUTargetInfo' is invalid in C99
[-Werror,-Wimplicit-function-declaration]
LLVMInitializeAMDGPUTargetInfo();
^
external/mesa/src/amd/common/ac_llvm_util.c:44:2: error: implicit declaration
of function 'LLVMInitializeAMDGPUTarget' is invalid in C99
[-Werror,-Wimplicit-function-declaration]
LLVMInitializeAMDGPUTarget();
^
external/mesa/src/amd/common/ac_llvm_util.c:45:2: error: implicit declaration
of function 'LLVMInitializeAMDGPUTargetMC' is invalid in C99
[-Werror,-Wimplicit-function-declaration]
LLVMInitializeAMDGPUTargetMC();
^
external/mesa/src/amd/common/ac_llvm_util.c:46:2: error: implicit declaration
of function 'LLVMInitializeAMDGPUAsmPrinter' is invalid in C99
[-Werror,-Wimplicit-function-declaration]
LLVMInitializeAMDGPUAsmPrinter();
^
---
src/amd/Android.common.mk | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/amd/Android.common.mk b/src/amd/Android.common.mk
index df65c24..c7fd193 100644
--- a/src/amd/Android.common.mk
+++ b/src/amd/Android.common.mk
@@ -30,6 +30,8 @@ LOCAL_MODULE := libmesa_amd_common
LOCAL_SRC_FILES := $(AMD_COMPILER_FILES)
+LOCAL_CFLAGS += -DFORCE_BUILD_AMDGPU # instructs LLVM to declare
LLVMInitializeAMDGPU* functions
+
LOCAL_C_INCLUDES := \
$(MESA_TOP)/include \
$(MESA_TOP)/src \
--
2.9.3
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