如何停止CMake附加C编译器标志 [英] How to stop CMake appending C compiler flags
问题描述
我将一个旧样式的makefile转换为CMake CMakeLists.txt文件，以便可以将项目加载到JetBrain的新CLion IDE中.
I converted an old style makefile to a CMake CMakeLists.txt file so that I can load a project into JetBrain's new CLion IDE.
我认为这很容易，但是我被CMake困在向编译命令添加一些自定义编译器标志的位置，这会导致编译错误.我对CMake的了解不足，无法解决此问题.
I thought it would be easy, but I'm stuck at the point of CMake appending some custom compiler flags to the compilation command which cause a compilation error. I don't have enough knowledge of CMake to solve this issue.
这是原始的makefile.
Here is the original 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) $(SRCS)
clean ::
del *.dump
del *.elf
del *.bin
这是我对CMakeLists.txt文件的尝试.
And here is my attempt at the CMakeLists.txt file.
cmake_minimum_required(VERSION 2.8.4)
# program names
set(HC11C m6811-elf-gcc.exe)
set(OBJCOPY m6811-elf-objcopy.exe)
set(OBJDUMP m6811-elf-objdump.exe)
# Important project paths
set(LIB_INC_PATH "C:/library/gel-hc1x-1.6.1/include"
"C:/library/gel-hc1x-1.6.1/include/asm-m68hc11/arch-32k")
set(HC11C_PATH "C:/GNUHC11/bin")
# Sets the compiler
# Needs to come before the project function
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_C_COMPILER "${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:\GNUHC11\bin\m6811-elf-gcc.exe "-xc" "-Dmc6811" "-Os" "-Wl,-m,m68hc11elfb" "-mshort" "TestProgram.c" "Interrupts.c" "Utilities.c" "-IC:\\DEVELO~1\\source" "-IC:\\library\\gel-hc1x-1.6.1\\include" "-IC:\\library\\gel-hc1x-1.6.1\\include\\asm-m68hc11\\arch-32k" "-v" "-dD" "-E" "-D___CIDR_IGNORE_DEFINITIONS_START"
它可以工作，但是对于不需要的结尾自动附加的"-E"编译器标志.其他附加标志"-v"，-dD"和"-D ___ CIDR ..."也是不需要的，但不会像"-E"那样引起编译错误.如何关闭这些附加标志?
It would work but for the auto appended "-E" compiler flag at the end which I don't want. The other appended flags "-v" "-dD" and '-D___CIDR..." are also unwanted but do not cause a compilation error like "-E" does. How can I turn these appended flags off?
在此先感谢您的帮助.
推荐答案
似乎您正在交叉编译，因此首选的cmake配置与正常配置有所不同.
It seems you are cross-compiling, so the preferred cmake configuration is a bit different than normal.
有关详情，请参见 http://www.vtk.org/Wiki/CMake_Cross_Compiling 注意工具链文件".
See http://www.vtk.org/Wiki/CMake_Cross_Compiling for details, pay attention to the "toolchain file".
我对自动附加标志一无所知.
I have no idea regarding the auto-appended flags.
您还可以使用CLion本身的任何编辑器或cmake-gui来查看生成的CMakeCache.txt文件.
You can also have a look at the generated CMakeCache.txt file, either with any editor, from CLion itself, or with cmake-gui.
请记住，如果您想手动查看CMakeCache.txt，请记住，CLion将您的CMakeLists.txt复制到一个时髦的临时目录中，并在临时目录下运行cmake.
Remember that CLion copies your CMakeLists.txt in a funky temporary directory and runs cmake off the temporary directory, if you want to look at CMakeCache.txt by hand.
我建议在调试CMakeLists.txt时将CLion放在一旁，而直接从外壳中直接使用cmake或cmake-gui.
What I suggest is to put aside CLion while you are debugging the CMakeLists.txt, and just use cmake or cmake-gui directly from the shell.
别放弃，cmake和CLion都是两个非常不错的程序，恕我直言:-)
Don't give up, both cmake and CLion are two very good programs IMHO :-)
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