Initial import of NFC GNSS SDK project
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chenjintao
@@ -0,0 +1,21 @@
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export CC = $(PREFIX)gcc
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export LD = $(PREFIX)ld
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export CXX = $(PREFIX)g++
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export CCAS ?= $(CC)
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ifeq ($(LTO),1)
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export AR = $(PREFIX)gcc-ar
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else
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export AR = $(PREFIX)ar
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endif
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export AS = $(PREFIX)as
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export LINK ?= $(PREFIX)gcc
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export LINKXX ?= $(PREFIX)g++
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export SIZE = $(PREFIX)size
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export OBJCOPY ?= $(shell command -v $(PREFIX)objcopy gobjcopy objcopy | head -n 1)
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ifeq ($(OBJCOPY),)
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$(warning objcopy not found. Hex file will not be created.)
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export OBJCOPY = true
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endif
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export OBJDUMP = $(PREFIX)objdump
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# We use GDB for debugging
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include $(RIOTMAKE)/tools/gdb.inc.mk
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@@ -0,0 +1,103 @@
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export LLVMPREFIX ?= llvm-
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# Apple XCode doesn't prefix its tools with llvm-, but manually installed LLVM
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# on OSX might have the llvm- prefix, we can't simply test against uname -s.
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# Test if llvm-ar exists
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ifeq (,$(shell command -v $(LLVMPREFIX)ar 2>/dev/null))
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# fall back to system tools
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export LLVMPREFIX :=
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endif
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export CC = clang
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export CXX = clang++
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export CCAS ?= $(CC)
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export AS = $(LLVMPREFIX)as
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export AR = $(LLVMPREFIX)ar
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export NM = $(LLVMPREFIX)nm
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# LLVM does have a linker, however, it is not entirely
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# compatible with GCC. For instance spec files as used in
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# `makefiles/libc/newlib.mk` are not supported. Therefore
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# we just use GCC for now.
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export LINK ?= $(PREFIX)gcc
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export LINKXX ?= $(PREFIX)g++
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# objcopy does not have a clear substitute in LLVM, use GNU binutils
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#export OBJCOPY = $(LLVMPREFIX)objcopy
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export OBJCOPY ?= $(shell command -v $(PREFIX)objcopy gobjcopy objcopy | head -n 1)
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ifeq ($(OBJCOPY),)
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$(warning objcopy not found. Hex file will not be created.)
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export OBJCOPY = true
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endif
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export OBJDUMP = $(LLVMPREFIX)objdump
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export SIZE = $(LLVMPREFIX)size
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# LLVM lacks a binutils strip tool as well...
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#export STRIP = $(LLVMPREFIX)strip
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# We use GDB for debugging for now, maybe LLDB will be supported in the future.
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include $(RIOTMAKE)/tools/gdb.inc.mk
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ifneq (,$(TARGET_ARCH))
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# Clang on Linux uses GCC's C++ headers and libstdc++ (installed with GCC)
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# Ubuntu and Debian use /etc/alternatives/gcc-$(TARGET_ARCH)-include/c++/$(GCC_VERSION)
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# Arch uses /usr/$(TARGET_ARCH)/include/c++/$(GCC_VERSION)
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# Gentoo uses /usr/lib/gcc/$(TARGET_ARCH)/$(GCC_VERSION)/include/g++-v5
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GCC_CXX_INCLUDE_PATTERNS ?= \
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/etc/alternatives/gcc-$(TARGET_ARCH)-include/c++/*/ \
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/usr/$(TARGET_ARCH)/include/c++/*/ \
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/usr/lib/gcc/$(TARGET_ARCH)/*/include/g++-v8 \
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/usr/lib/gcc/$(TARGET_ARCH)/*/include/g++-v7 \
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/usr/lib/gcc/$(TARGET_ARCH)/*/include/g++-v6 \
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/usr/lib/gcc/$(TARGET_ARCH)/*/include/g++-v5 \
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#
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# Try to find the proper multilib directory using GCC, this may fail if a cross-
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# GCC is not installed.
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ifeq ($(GCC_MULTI_DIR),)
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GCC_MULTI_DIR := $(shell $(PREFIX)gcc $(CFLAGS) -print-multi-directory 2>/dev/null)
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endif
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# Tell clang to cross compile
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export CFLAGS += -target $(TARGET_ARCH)
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export CXXFLAGS += -target $(TARGET_ARCH)
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# We currently don't use LLVM for linking (see comment above).
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#export LINKFLAGS += -target $(TARGET_ARCH)
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# Use the wildcard Makefile function to search for existing directories matching
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# the patterns above. We use the -isystem gcc/clang argument to add the include
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# directories as system include directories, which means they will not be
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# searched until after all the project specific include directories (-I/path)
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# We sort the list of found directories and take the last one, it will likely be
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# the most recent GCC version. This avoids using old headers left over from
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# previous tool chain installations.
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GCC_CXX_INCLUDES ?= \
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$(addprefix \
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-isystem $(firstword \
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$(foreach pat, $(GCC_CXX_INCLUDE_PATTERNS), $(lastword $(sort $(wildcard $(pat)))))), \
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/. /$(TARGET_ARCH)/$(GCC_MULTI_DIR) /backward \
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)
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# If nothing was found we will try to fall back to searching for a cross-gcc in
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# the current PATH and use a relative path for the includes
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ifeq (,$(GCC_CXX_INCLUDES))
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GCC_CXX_INCLUDES := $(addprefix -isystem ,$(wildcard $(dir $(shell which $(PREFIX)gcc))../$(TARGET_TRIPLE)/include))
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endif
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# Pass the includes to the C++ compilation rule in Makefile.base
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export CXXINCLUDES += $(GCC_CXX_INCLUDES)
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# Some C headers (e.g. limits.h) are located with the GCC libraries
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GCC_C_INCLUDE_PATTERNS ?= \
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/usr/lib/gcc/$(TARGET_TRIPLE)/*/ \
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#
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GCC_C_INCLUDES ?= \
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$(addprefix -isystem ,$(wildcard $(addprefix \
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$(lastword $(sort \
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$(foreach pat, $(GCC_C_INCLUDE_PATTERNS), $(wildcard $(pat))))), \
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include include-fixed) \
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))
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# If nothing was found we will try to fall back to searching for the libgcc used
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# by an installed cross-GCC and use its headers.
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ifeq (,$(GCC_C_INCLUDES))
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GCC_C_INCLUDES := $(addprefix -isystem ,$(wildcard $(addprefix $(dir $(shell $(PREFIX)gcc -print-libgcc-file-name)), include include-fixed)))
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endif
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export INCLUDES += $(GCC_C_INCLUDES)
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endif
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