如何停止CMake追加C编译器标志
我将旧式makefile转换为CMake CMakeLists.txt文件，以便将项目加载到JetBrain的新CLion IDE中。
我认为这很容易，但我坚持在CMake的点上追加一些自定义编译器标志到编译命令，这会导致编译错误。 我没有足够的CMake知识来解决这个问题。
这是原始的makefile。
# makefile
# Main Filename to be compiled
MAINFILE = TestProgram
# Paths
DRIVE := C:
COMPILERROOT := $(DRIVE)/GNUHC11
COMPILERPATH := $(COMPILERROOT)/bin
GELROOT := $(DRIVE)/library/gel-hc1x-1.6.1
GELINCLUDESDIR := $(GELROOT)/include
# Compiler, Linker, Object Copy, and Object Dump path
CC := $(COMPILERPATH)/m6811-elf-gcc # compiler
OC := $(COMPILERPATH)/m6811-elf-objcopy # object copy
OD := $(COMPILERPATH)/m6811-elf-objdump # object dump
# Includes
GELINCLUDES += -I$(GELINCLUDESDIR) -I$(GELINCLUDESDIR)/asm-m68hc11/arch-32k
# Compiler Flags
CFLAGS += -Os # turn on optimizer
CFLAGS += -mshort # consider type int to be 16 bits
CFLAGS += -Wl,-m,m68hc11elfb # build for elf file and use memory.x for memory map
CFLAGS += -I. $(GELINCLUDES) # Add current dir and gel library for includes
CFLAGS += -Dmc6811 # Add define to define the processor architecture for gel includes
# C Source codes to be compiled
SRC1 = $(MAINFILE).c
SRC2 = Interrupts.c
SRC3 = Utilities.c
# C Header files dependencies
HDR1 = $(MAINFILE).h
HDR2 = Interrupts.h
HDR3 = Utilities.h
SRCS = $(SRC1) $(SRC2) $(SRC3)
HDRS = $(HDR1) $(HDR2) $(HDR3)
# Elf file to be generated
ELF1 = $(SRC1:.c=.elf)
# Generate Bin file for programming & Assembly dump
$(MAINFILE).bin : $(ELF1)
$(OC) -O binary $(ELF1) $(MAINFILE).bin
$(OD) -xDC --section=.text --section=.vectors $(ELF1) >$(MAINFILE).dump
# Full compile and link
$(ELF1) : $(SRCS) $(HDRS)
$(CC) $(CFLAGS) -o $(ELF1) $(SRCS)
clean ::
del *.dump
del *.elf
del *.bin
这里是我对CMakeLists.txt文件的尝试。
cmake_minimum_required(VERSION 2.8.4)
# program names
set(HC11C m6811-elf-gcc.exe)
set(OBJCOPY m6811-elf-objcopy.exe)
set(OBJDUMP m6811-elf-objdump.exe)
# Important project paths
set(LIB_INC_PATH "C:/library/gel-hc1x-1.6.1/include"
"C:/library/gel-hc1x-1.6.1/include/asm-m68hc11/arch-32k")
set(HC11C_PATH "C:/GNUHC11/bin")
# Sets the compiler
# Needs to come before the project function
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_C_COMPILER "${HC11C_PATH}/${HC11C}")
set(MAIN_FILE "TestProgram")
project(${MAIN_FILE})
# Files to be compiled
set(BASE_PATH "${${PROJECT_NAME}_SOURCE_DIR}")
set(INC_PATH "${BASE_PATH}")
set(SRC_PATH "${BASE_PATH}")
set(SRC_FILES "${SRC_PATH}/${MAIN_FILE}.c"
"${SRC_PATH}/Interrupts.c"
"${SRC_PATH}/Utilities.c")
# Attempt to clear the other spurious compiler flags that I don't want,
# and which cause a compiler arguments error.
# This doesn't seem to work - the defaults still appear.
set(CMAKE_C_FLAGS_DEBUG "")
set(CMAKE_C_FLAGS_RELEASE "")
set(CMAKE_C_FLAGS_RELWITHDEBINFO "")
set(CMAKE_C_FLAGS_MINSIZEREL "")
# Compiler flags
set(CWARN "-Wl,-m,m68hc11elfb") # build for elf file and use memory.x for memory map
set(CTUNING "-mshort") # consider type int to be 16 bits
set(COPT "-Os") # turn on optimizer
set(CDEFS "-Dmc6811") # Add define to define the processor architecture for gel includes
set(CFILES "${MAIN_FILE}.c Interrupts.c Utilities.c")
set(CFLAGS "${CDEFS} ${COPT} ${CWARN} ${CTUNING} ${CFILES}")
set(CMAKE_C_FLAGS "${CFLAGS}")
# Project setup
include_directories(${INC_PATH} ${LIB_INC_PATH})
add_executable(${MAIN_FILE} ${SRC_FILES})
set_target_properties(${MAIN_FILE} PROPERTIES OUTPUT_NAME "${MAIN_FILE}.elf")
# Compiling targets
add_custom_target(main ALL ${OBJCOPY} -O binary "${MAIN_FILE}.elf" "${MAIN_FILE}.bin" DEPENDS ${MAIN_FILE})
add_custom_target(dump ALL ${OBJDUMP} -xDC --section=.text --section=.vectors "${MAIN_FILE}.elf" > "${MAIN_FILE}.dump" DEPENDS main)
set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES "${MAIN_FILE}.dump;${MAIN_FILE}.elf;${MAIN_FILE}.bin")
# Config logging
message("* ")
message("* Project Name:t${PROJECT_NAME}")
message("* Project Source:t${SRC_PATH}")
message("* Project Include:t${INC_PATH}")
message("* Library Include:t${LIB_INC_PATH}")
message("* ")
message("* Project Source Files:t${SRC_FILES}")
message("* MAIN_FILE variable:t${MAIN_FILE}")
message("* ")
message("* C Flags:t${CMAKE_C_FLAGS}")
message("* ")
这是生成的编译命令：
C:GNUHC11binm6811-elf-gcc.exe "-xc" "-Dmc6811" "-Os" "-Wl,-m,m68hc11elfb" "-mshort" "TestProgram.c" "Interrupts.c" "Utilities.c" "-IC:DEVELO~1source" "-IC:librarygel-hc1x-1.6.1include" "-IC:librarygel-hc1x-1.6.1includeasm-m68hc11arch-32k" "-v" "-dD" "-E" "-D___CIDR_IGNORE_DEFINITIONS_START"
它会工作，但为自动附加“-E”编译器标志在我不想要的结尾。 其他附加标志“-v”“-dD”和“-D ___ CIDR ...”也是不需要的，但不会导致像“-E”那样的编译错误。我怎样才能关闭这些附加标志？
预先感谢您的帮助。
看来你正在交叉编译，所以首选的cmake配置与正常情况有点不同。
有关详细信息，请参见http://www.vtk.org/Wiki/CMake_Cross_Compiling，请注意“工具链文件”。
我不知道关于自动添加标志。
您还可以使用任何编辑器，CLion本身或cmake-gui查看生成的CMakeCache.txt文件。
请记住CLion会将您的CMakeLists.txt复制到一个时髦的临时目录中，并将cmake从临时目录中运行，如果您想亲自查看CMakeCache.txt。
我建议在调试CMakeLists.txt时将CLion放在一边，并直接从shell中使用cmake或cmake-gui。
不要放弃，cmake和CLion都是两个非常好的程序恕我直言:-)
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