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社区首页 >问答首页 >CMAKE:如何防止CMAKE构建项目不依赖的库？

问CMAKE:如何防止CMAKE构建项目不依赖的库？
EN

Stack Overflow用户
提问于 2020-08-02 00:01:50
回答 1查看 398关注 0票数 0

我正在建立一个CMAKE项目，以建立一个ARM目标。该项目包含一个子模块和为目标提供的SDK。我为sdk中的每个驱动程序创建了一个具有正确依赖项的静态库定义。单独的库定义是可取的，以防止不必要的代码/驱动程序使对象文件臃肿。sdk子模块中的CMakeLists.txt文件：

代码语言：javascript
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#############################
###### System Library #######
#############################

### System ###
add_library(S32K-SDK-SYSTEM STATIC)

## Headers ##
target_include_directories(S32K-SDK-SYSTEM PUBLIC
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/devices"
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/devices/common"
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/devices/${CPU}/include"
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/devices/${CPU}/startup"
)

## Sources ##
file(GLOB SYSTEM-SOURCES -CONFIGURE_DEPENDS
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/devices/${CPU}/startup/*.c"
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/devices/*.c"
)

target_sources(S32K-SDK-SYSTEM PUBLIC
    ${SYSTEM-SOURCES}
)


#############################
######### Drivers ###########
#############################

###########
### ADC ###
###########
add_library(S32K-SDK-ADC-DRIVER STATIC)

## Dependencies ##
target_link_libraries(S32K-SDK-ADC-DRIVER PRIVATE
    S32K-SDK-SYSTEM
    S32K-SDK-CLOCK-DRIVER
)

## Headers ##
target_include_directories(S32K-SDK-ADC-DRIVER PUBLIC
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/drivers/inc"
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/drivers/src/adc"
)

## Sources ##
file(GLOB_RECURSE ADC-DRIVER-SOURCES -CONFIGURE_DEPENDS
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/drivers/src/adc/*.c"
)

target_sources(S32K-SDK-ADC-DRIVER PUBLIC
    ${ADC-DRIVER-SOURCES}
)


#############
### Clock ###
#############
add_library(S32K-SDK-CLOCK-DRIVER STATIC)

## Dependencies ##
target_link_libraries(S32K-SDK-CLOCK-DRIVER PRIVATE
    S32K-SDK-SYSTEM
    S32K-SDK-INTERRUPT-DRIVER
)

## Headers ##
target_include_directories(S32K-SDK-CLOCK-DRIVER PUBLIC
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/drivers/inc"
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/drivers/src/clock/S32K1xx"
)

## Sources ##
file(GLOB_RECURSE CLOCK-DRIVER-SOURCES -CONFIGURE_DEPENDS
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/drivers/src/clock/*.c"
)

target_sources(S32K-SDK-CLOCK-DRIVER PUBLIC
    ${CLOCK-DRIVER-SOURCES}
)


##################
### Comparator ###
##################
add_library(S32K-SDK-COMPARATOR-DRIVER STATIC)

## Dependencies ##
target_link_libraries(S32K-SDK-COMPARATOR-DRIVER PRIVATE
    S32K-SDK-SYSTEM
)

## Headers ##
target_include_directories(S32K-SDK-COMPARATOR-DRIVER PUBLIC
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/drivers/inc"
)

## Sources ##
file(GLOB_RECURSE COMPARATOR-DRIVER-SOURCES -CONFIGURE_DEPENDS
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/drivers/src/cmp/*.c"
)

target_sources(S32K-SDK-COMPARATOR-DRIVER PUBLIC
    ${COMPARATOR-DRIVER-SOURCES}
)


###########
### CRC ###
###########
add_library(S32K-SDK-CRC-DRIVER STATIC)

## Dependencies ##
target_link_libraries(S32K-SDK-CRC-DRIVER PRIVATE
    S32K-SDK-SYSTEM
)

## Headers ##
target_include_directories(S32K-SDK-CRC-DRIVER PUBLIC
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/drivers/inc"
)

## Sources ##
file(GLOB_RECURSE CRC-DRIVER-SOURCES -CONFIGURE_DEPENDS
    "${CMAKE_CURRENT_SOURCE_DIR}/platform/drivers/src/crc/*.c"
)

target_sources(S32K-SDK-CRC-DRIVER PUBLIC
    ${CRC-DRIVER-SOURCES}
)

etc...

示例项目包含一个main.c文件，其内容如下：

代码语言：javascript
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int main(void) {}

我在项目的target_link_librarires文件中配置了“CMakeLists.txt”，以便项目只依赖于“系统”库(为目标创建可执行文件所需的最小代码和注册定义)。

代码语言：javascript
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cmake_minimum_required(VERSION 3.16)

# CMake Modules Path
set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH};${CMAKE_CURRENT_SOURCE_DIR}/cmake")

# Toolchain
set(Toolchain "${CMAKE_CURRENT_SOURCE_DIR}/toolchain")
include(toolchain)

# Project Name
project(Template VERSION 1.0)

# C++ Standard
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED True)
enable_language(ASM)

# Linker Configuration
set(LINKER_SCRIPT "${PROJECT_SOURCE_DIR}/config/S32K142_32_flash.ld")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}  -T ${LINKER_SCRIPT}  -Xlinker  -Map=${CMAKE_PROJECT_NAME}.map")


###############################
### Processor Configuration ###
###############################

# Define the processor.
set(CPU S32K142)

# Define the core.
if (${CPU} MATCHES "^S32K11")
    message(STATUS "M0+ core.")
    set(CORE M0+)
else ()
    message(STATUS "M4 core.")
    set(CORE M4)
endif()

# TODO Add Definitons
add_definitions(-DCPU_${CPU})

# Specify Compiler Flags
set(CMAKE_C_FLAGS " ${CMAKE_C_FLAGS} -mthumb  -funsigned-char  -funsigned-bitfields  -fshort-enums  -ffunction-sections  -fdata-sections  -fno-jump-tables  -g  -mfloat-abi=hard  -Wall  -Wextra  -Wstrict-prototypes  -Wunused  -Wsign-compare")
set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -mthumb  -funsigned-char  -funsigned-bitfields  -fshort-enums  -ffunction-sections  -fdata-sections  -fno-jump-tables  -g  -mfloat-abi=hard  -Wall  -Wextra  -Wstrict-prototypes  -Wunused  -Wsign-compare")


if(${CPU} MATCHES "^S32K11")
    message(STATUS "M0+ core detected.")
    set(CMAKE_C_FLAGS " ${CMAKE_C_FLAGS}  -mcpu=cortex-m0 ")
    set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS}  -mcpu=cortex-m0 ")
else()
    message(STATUS "M4 core detected.")
    # TODO Should we override the default fpu option?
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}  -mcpu=cortex-m4  -mfpu=fpv4-sp-d16")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}  -mcpu=cortex-m4  -mfpu=fpv4-sp-d16")
endif()


# Executeable
add_executable(${PROJECT_NAME}.elf)

# Add Libraries
add_subdirectory(${PROJECT_SOURCE_DIR}/lib/sdk sdk)

target_link_libraries(${PROJECT_NAME}.elf PUBLIC
    S32K-SDK-SYSTEM
)

target_include_directories(${PROJECT_NAME}.elf PRIVATE
    "${PROJECT_SOURCE_DIR}/include"
)

target_sources(${PROJECT_NAME}.elf PUBLIC
    "${PROJECT_SOURCE_DIR}/src/main.c"
    "${PROJECT_SOURCE_DIR}/startup/startup_S32K142.S"
)

add_custom_command(TARGET ${PROJECT_NAME}.elf
    POST_BUILD
    COMMAND ${CMAKE_OBJCOPY} -O ihex ${PROJECT_NAME}.elf ${PROJECT_NAME}.hex
)

当项目构建时，它正确地构建系统库并链接目标可执行文件，然后继续构建SDK中所有定义的驱动程序，如果目标可执行文件已经链接，这些驱动程序显然是不需要的。

代码语言：javascript
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$ cmake -G "MinGW Makefiles" .. && /c/MinGW/bin/mingw32-make.exe
-- The C compiler identification is GNU 9.3.1
-- The CXX compiler identification is GNU 9.3.1
-- Check for working C compiler: C:/Users/Jon/src/S32K-Template/toolchain/windows/bin/arm-none-eabi-gcc.exe
-- Check for working C compiler: C:/Users/Jon/src/S32K-Template/toolchain/windows/bin/arm-none-eabi-gcc.exe - works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: C:/Users/Jon/src/S32K-Template/toolchain/windows/bin/arm-none-eabi-g++.exe
-- Check for working CXX compiler: C:/Users/Jon/src/S32K-Template/toolchain/windows/bin/arm-none-eabi-g++.exe - works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- The ASM compiler identification is GNU
-- Found assembler: C:/Users/Jon/src/S32K-Template/toolchain/windows/bin/arm-none-eabi-gcc.exe
-- M4 core.
-- M4 core detected.
-- Configuring done
-- Generating done
-- Build files have been written to: C:/Users/Jon/src/S32K-Template/build
Scanning dependencies of target S32K-SDK-SYSTEM
[  1%] Building C object sdk/CMakeFiles/S32K-SDK-SYSTEM.dir/platform/devices/S32K142/startup/system_S32K142.c.obj
[  1%] Building C object sdk/CMakeFiles/S32K-SDK-SYSTEM.dir/platform/devices/startup.c.obj
[  2%] Linking C static library libS32K-SDK-SYSTEM.a
[  2%] Built target S32K-SDK-SYSTEM
Scanning dependencies of target Template.elf
[  2%] Building C object CMakeFiles/Template.elf.dir/src/main.c.obj
[  3%] Building ASM object CMakeFiles/Template.elf.dir/startup/startup_S32K142.S.obj
[  3%] Building C object CMakeFiles/Template.elf.dir/lib/sdk/platform/devices/S32K142/startup/system_S32K142.c.obj
[  4%] Building C object CMakeFiles/Template.elf.dir/lib/sdk/platform/devices/startup.c.obj
[  5%] Linking C executable Template.elf
[  5%] Built target Template.elf
Scanning dependencies of target S32K-SDK-COMPARATOR-DRIVER
[  5%] Building C object sdk/CMakeFiles/S32K-SDK-COMPARATOR-DRIVER.dir/platform/drivers/src/cmp/cmp_driver.c.obj
[  6%] Building C object sdk/CMakeFiles/S32K-SDK-COMPARATOR-DRIVER.dir/platform/drivers/src/cmp/cmp_hw_access.c.obj
[  7%] Building C object sdk/CMakeFiles/S32K-SDK-COMPARATOR-DRIVER.dir/platform/devices/S32K142/startup/system_S32K142.c.obj
[  7%] Building C object sdk/CMakeFiles/S32K-SDK-COMPARATOR-DRIVER.dir/platform/devices/startup.c.obj
[  8%] Linking C static library libS32K-SDK-COMPARATOR-DRIVER.a
[  8%] Built target S32K-SDK-COMPARATOR-DRIVER
Scanning dependencies of target S32K-SDK-INTERRUPT-DRIVER
[  8%] Building C object sdk/CMakeFiles/S32K-SDK-INTERRUPT-DRIVER.dir/platform/drivers/src/interrupt/interrupt_manager.c.obj
[  9%] Building C object sdk/CMakeFiles/S32K-SDK-INTERRUPT-DRIVER.dir/platform/devices/S32K142/startup/system_S32K142.c.obj
[ 10%] Building C object sdk/CMakeFiles/S32K-SDK-INTERRUPT-DRIVER.dir/platform/devices/startup.c.obj
[ 10%] Linking C static library libS32K-SDK-INTERRUPT-DRIVER.a
[ 10%] Built target S32K-SDK-INTERRUPT-DRIVER
Scanning dependencies of target S32K-SDK-CLOCK-DRIVER
[ 11%] Building C object sdk/CMakeFiles/S32K-SDK-CLOCK-DRIVER.dir/platform/drivers/src/clock/S32K1xx/clock_S32K1xx.c.obj
[ 11%] Building C object sdk/CMakeFiles/S32K-SDK-CLOCK-DRIVER.dir/platform/devices/S32K142/startup/system_S32K142.c.obj
[ 12%] Building C object sdk/CMakeFiles/S32K-SDK-CLOCK-DRIVER.dir/platform/devices/startup.c.obj
[ 12%] Building C object sdk/CMakeFiles/S32K-SDK-CLOCK-DRIVER.dir/platform/drivers/src/interrupt/interrupt_manager.c.obj
[ 13%] Linking C static library libS32K-SDK-CLOCK-DRIVER.a
[ 13%] Built target S32K-SDK-CLOCK-DRIVER
Scanning dependencies of target S32K-SDK-ADC-DRIVER
[ 13%] Building C object sdk/CMakeFiles/S32K-SDK-ADC-DRIVER.dir/platform/drivers/src/adc/adc_driver.c.obj
[ 14%] Building C object sdk/CMakeFiles/S32K-SDK-ADC-DRIVER.dir/platform/devices/S32K142/startup/system_S32K142.c.obj
[ 14%] Building C object sdk/CMakeFiles/S32K-SDK-ADC-DRIVER.dir/platform/devices/startup.c.obj
[ 15%] Building C object sdk/CMakeFiles/S32K-SDK-ADC-DRIVER.dir/platform/drivers/src/clock/S32K1xx/clock_S32K1xx.c.obj
[ 15%] Linking C static library libS32K-SDK-ADC-DRIVER.a
[ 15%] Built target S32K-SDK-ADC-DRIVER
etc...

是否有一种方法可以将CMAKE配置为不构建项目不依赖的库？是否有更好的方法来设置项目以防止这种情况发生？

cmake
arm
static-libraries
microcontroller
gcc
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2020-08-02 19:16:00

解决方案似乎是指定“目标”参数。谢天谢地斯蒂芬·内维尔。

代码语言：javascript
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$ cmake -G "MinGW Makefiles" ..  && cmake --build . --target Template.elf
-- The C compiler identification is GNU 9.3.1
-- The CXX compiler identification is GNU 9.3.1
-- Check for working C compiler: C:/Users/Jon/src/S32K-Template/toolchain/windows/bin/arm-none-eabi-gcc.exe
-- Check for working C compiler: C:/Users/Jon/src/S32K-Template/toolchain/windows/bin/arm-none-eabi-gcc.exe - works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: C:/Users/Jon/src/S32K-Template/toolchain/windows/bin/arm-none-eabi-g++.exe
-- Check for working CXX compiler: C:/Users/Jon/src/S32K-Template/toolchain/windows/bin/arm-none-eabi-g++.exe - works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- The ASM compiler identification is GNU
-- Found assembler: C:/Users/Jon/src/S32K-Template/toolchain/windows/bin/arm-none-eabi-gcc.exe
-- M4 core.
-- S32K-SDK OSIF FreeRTOS Enabled
-- Configuring done
-- Generating done
-- Build files have been written to: C:/Users/Jon/src/S32K-Template/build
Scanning dependencies of target S32K-SDK-SYSTEM
[ 33%] Building C object sdk/CMakeFiles/S32K-SDK-SYSTEM.dir/platform/devices/S32K142/startup/system_S32K142.c.obj
[ 33%] Building C object sdk/CMakeFiles/S32K-SDK-SYSTEM.dir/platform/devices/startup.c.obj
[ 33%] Linking C static library libS32K-SDK-SYSTEM.a
[ 33%] Built target S32K-SDK-SYSTEM
Scanning dependencies of target Template.elf
[ 33%] Building C object CMakeFiles/Template.elf.dir/src/main.c.obj
[ 33%] Building ASM object CMakeFiles/Template.elf.dir/startup/startup_S32K142.S.obj
[ 66%] Building C object CMakeFiles/Template.elf.dir/lib/sdk/platform/devices/S32K142/startup/system_S32K142.c.obj
[ 66%] Building C object CMakeFiles/Template.elf.dir/lib/sdk/platform/devices/startup.c.obj
[100%] Linking C executable Template.elf
[100%] Built target Template.elf
票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/63211143

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