破译CMake错误 我是新的使用CGED（并且相当新的文件，C和C++）。我的任务是将当前的构建系统更改为使用CMake生成makefile和编译代码的系统。我很难破译CMake报告的错误，也没有幸搜索过这个网站或任何sute。如果这个问题在其他地方得到了回答，请告诉我，我会提前回答

我试图发布一个显示我们当前文件结构崩溃的图像，但我还没有发布图像的信誉点

以下是我在运行cmake和make时收到的错误：

*chrisk@DEVSERVER:~/633.CMake$ cmake .
xmlrole.c
xmltok.c
xmlparse.c
sysMon.cpp
-- Configuring done
-- Generating done
-- Build files have been written to: /home/chrisk/633.CMake
chrisk@DEVSERVER:~/633.CMake$ make
[ 25%] Building C object arm/expat/CMakeFiles/expat.dir/xmlrole.c.o
[ 50%] Building C object arm/expat/CMakeFiles/expat.dir/xmltok.c.o
[ 75%] Building C object arm/expat/CMakeFiles/expat.dir/xmlparse.c.o
/home/chrisk/633.CMake/arm/expat/xmlparse.c: In function 'XML_Status                       
/home/chrisk/633.CMake/arm/expat/xmlparse.c: In function 'XML_Status          XML_Parse(XML_ParserStruct*, const char*, int, int)':
/home/chrisk/633.CMake/arm/expat/xmlparse.c:1488:14: warning: enumeration value   'XML_FINISHED' not handled in switch
Linking C static library libexpat.a
[ 75%] Built target expat
[100%] Building CXX object arm/services/CMakeFiles/services.dir/sysMon.cpp.o
In file included from /home/projects/OMAP-L137/timesys/factory-current/build_armv5l-    timesys-linux-uclibcgnueabi/DSPLink-1_65_01/DSPLink- 1_65_01/dsplink/gpp/inc/usr/dsplink.h:52:0,
             from /home/chrisk/633.CMake/dsp/included/flagIOBuffer.h:4,
             from /home/chrisk/633.CMake/arm/framework/memoryManagerBase.h:4,
             from /home/chrisk/633.CMake/arm/framework/memoryManager.h:4,
             from /home/chrisk/633.CMake/arm/services/sysMon.cpp:9:
/home/projects/OMAP-L137/timesys/factory-current/build_armv5l-timesys-linux-   uclibcgnueabi/DSPLink-1_65_01/DSPLink-1_65_01/dsplink/gpp/inc/usr/linkcfgdefs.h:824:37:   error: 'MAX_DSPS' was not declared in this scope
In file included from /home/chrisk/633.CMake/arm/services/sysMon.cpp:16:0:
/home/chrisk/633.CMake/arm/logging/logger.h:43:17: note: the mangling of 'va_list' has   changed in GCC 4.4
make[2]: *** [arm/services/CMakeFiles/services.dir/sysMon.cpp.o] Error 1
make[1]: *** [arm/services/CMakeFiles/services.dir/all] Error 2
make: *** [all] Error 2
chrisk@DEVSERVER:~/633.CMake$ 

以下是项目源目录中的CMakeLists.txt：

*INCLUDE(CMakeForceCompiler)
CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
PROJECT(633.CMake)
SET(CMAKE_SYSTEM_NAME Linux)
SET(CMAKE_SYSTEM_PROCESSOR arm)

this one not so much
SET(CMAKE_SYSTEM_VERSION 1)
SET(FACTORY_CURRENT /home/projects/OMAP-L137/timesys/factory-current)
SET(TOOLCHAIN_LOC ${FACTORY_CURRENT}/build_armv5l-timesys-linux-   uclibcgnueabi/toolchain/bin)

specify the cross compiler
SET(CMAKE_C_COMPILER ${TOOLCHAIN_LOC}/armv5l-timesys-linux-uclibcgnueabi-g++)
SET(CMAKE_CXX_COMPILER ${TOOLCHAIN_LOC}/armv5l-timesys-linux-uclibcgnueabi-g++)
SET(CMAKE_C_FLAGS "-Wall -c")
SET(CMAKE_CXX_FLAGS ${CMAKE_C_FLAGS})

where is the target environment 
SET(CMAKE_FIND_ROOT_PATH /home/projects/OMAP-L137/timesys/factory-current)
SET(PROJECT_SOURCE_DIR /home/chrisk/633.CMake/)

search for programs in the build host directories
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)

for libraries and headers in the target directories
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
SET(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/build/bin)
ADD_SUBDIRECTORY(arm)*

以下是目录633.CMake/arm/expat

以下是目录633.CMake/arm/expat*中的CMakeLists.txt（这将创建库libexpat.a），文件expatfiles.txt仅列出expat所需的源文件（同样的事情也适用于服务CMakeLists.txt：

*FILE(READ "expatfiles.txt" contents)
STRING(REGEX REPLACE "\n" ";" contents "${contents}")
foreach(expatfile ${contents})
message("${expatfile}")
endforeach()
ADD_LIBRARY(expat ${contents})*

以下是目录633.CMake/arm/services*

*INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/arm/framework        ${CMAKE_SOURCE_DIR}/arm/io_master ${CMAKE_SOURCE_DIR}/arm/flagDictionary
${CMAKE_SOURCE_DIR}/arm/logging ${CMAKE_SOURCE_DIR}/dsp/included          ${CMAKE_SOURCE_DIR}/dsp/mb)
INCLUDE_DIRECTORIES(${FACTORY_CURRENT}/build_armv5l-timesys-linux-    uclibcgnueabi/DSPLink-1_65_01/DSPLink-1_65_01/dsplink/gpp/inc/usr)
INCLUDE_DIRECTORIES(/home/projects/OMAP-L137/timesys/factory-20120925-633/build_armv5l-  timesys-linux-uclibcgnueabi/DSPLink-1_65_01/DSPLink-1_65_01/dsplink/gpp/inc/usr)
INCLUDE_DIRECTORIES(/home/projects/OMAP-  L137/SDK/OMAPL137_arm_1_00_00_11/dsplink_linux_1_65_00_03/dsplink/gpp/src/inc/sys/Linux)

FILE(READ "servicesfiles.txt" contents)
STRING(REGEX REPLACE "\n" ";" contents "${contents}")
foreach(servicesfiles ${contents})
message("${servicesfiles}")
endforeach()
ADD_LIBRARY(services ${contents}

---

此特定错误不是由CMake引起的。请参阅以下行：

/home/projects/OMAP-L137/timesys/factory-current/build_armv5l-timesys-linux-   uclibcgnueabi/DSPLink-1_65_01/DSPLink-1_65_01/dsplink/gpp/inc/usr/linkcfgdefs.h:824:37:   error: 'MAX_DSPS' was not declared in this scope``

---

问题在于缺少符号

MAX\u dsp

。在源代码树中执行递归grep，然后查看此

MAX\u dsp

应该来自何处。它可能是一个宏（或全局变量）在头文件中定义，您无法包含该头文件，或者它可能是一个宏，您需要在编译时通过CMakeLists.txt文件提供该宏（请参阅文档：关于如何在CMake中执行该操作）

“expatfiles.txt仅列出expat所需的源文件”不要这样做。CMake无法检测此文件何时更改，因此如果您修改它，CMake将不会自动生成新添加的文件。只需在相应的CMakeLists.txt中列出它们。您看到的错误是

make

错误，而不是

CMake

错误，并且这些错误看起来像来自编译器。您可能需要检查您的错误源代码。

/home/projects/OMAP-L137/timesys/factory-current/build_armv5l-timesys-linux-   uclibcgnueabi/DSPLink-1_65_01/DSPLink-1_65_01/dsplink/gpp/inc/usr/linkcfgdefs.h:824:37:   error: 'MAX_DSPS' was not declared in this scope``