c++ - 字符串正则表达式替换需要 6 个参数但是..MinGW，CMake，w7

Question

我正在尝试在 w7 中构建一个我在 CentOS 6.5 上使用的应用程序，没有问题，但我需要为 Windows 32 位和 64 位编译。该程序使用 RTi 库，但 Win 库是为 VS2010 制作的，我正在尝试使用 MinGW Gcc 4.x.x、CMake 2.8.12 和 Maven 3.02 进行构建。我纠正了一些数据类型的不兼容性，但我认为 MinGW 和 Windows 7 之间的斜杠和正斜杠可能存在一些问题。基本程序已成功编译，现在是二进制文件的时候了。当我执行 cmake -G "MinGW Makefiles"expression 时，出现此错误。

CMake Error at C:/Workspace/trunk/IB/src/make/IB.Utils.cmake:43 (string):
  string sub-command REGEX, mode REPLACE needs at least 6 arguments total to
  command.
Call Stack (most recent call first):
  C:/Workspace/trunk/IB/src/make/IB.Utils.cmake:116 (RemoveCXXComments)
  C:/Workspace/trunk/IB/src/make/IB.DDS.cmake:12 (HasInterfaces)
  C:/Workspace/trunk/IB/src/make/IB.DDS.cmake:59 (GetDDSGeneratedFiles)
  CMakeLists.txt:6 (GenerateIDLLibrary)


 CMake Error at C:/Workspace/trunk/IB/src/make/IB.Utils.cmake:43 (string):
  string sub-command REGEX, mode REPLACE needs at least 6 arguments total to
  command.
Call Stack (most recent call first):
  C:/Workspace/trunk/IB/src/make/IB.Utils.cmake:65 (RemoveCXXComments)
  C:/Workspace/trunk/IB/src/make/IB.DDS.cmake:74 (FindIncludes)
  CMakeLists.txt:6 (GenerateIDLLibrary)


Includes for 'C:/MinGW/msys/1.0/home/blcoalla/trunk/Example/TestProfiles/TestPayload.idl'        are
CMake Error at C:/Workspace/trunk/IB/src/make/IB.Utils.cmake:43 (string):
  string sub-command REGEX, mode REPLACE needs at least 6 arguments total to
  command.
Call Stack (most recent call first):
  C:/Workspace/trunk/IB/src/make/IB.Utils.cmake:65 (RemoveCXXComments)
  C:/Workspace/trunk/IB/src/make/IB.DDS.cmake:111 (FindIncludes)
  CMakeLists.txt:6 (GenerateIDLLibrary)

这是 utils.cmake 的摘录:

Macro to get the content of a file

-----------------------------------------------------------------

宏(GetFileContent OutFile)

  #message("Called GetFileContent '${ARGN}'")
  SET(cat_prog cat)
  IF(WIN32)
    IF(NOT UNIX)
      SET(cat_prog type)
    ELSE(NOT UNIX)
      message (FATAL_ERROR "cannot determine the system to call to proper 'cat/type'     method")
    ENDIF(NOT UNIX)
  ENDIF(WIN32)

  set (Out)
  set (tmp)

  foreach(gfcfile ${ARGN})

    if (NOT EXISTS ${gfcfile})
      message(FATAL_ERROR "Cannot find file '${gfcfile}'")
    endif(NOT EXISTS ${gfcfile})

    EXECUTE_PROCESS(COMMAND ${cat_prog} ${gfcfile}
                    OUTPUT_VARIABLE tmp)
    set (Out ${Out} ${tmp})

  endforeach(gfcfile ${ARGN})

  set(${OutFile} ${Out})
  #message("Leaving GetFileContent")

endmacro(GetFileContent)
#-----------------------------------------------------------------

# Macro to get includes from an IDL file
#-----------------------------------------------------------------
macro (RemoveCXXComments Output Input)

  #message("RemoveCXXComments Input: '${Input}'")
  # Remove single line comments
  string(REGEX REPLACE "(//[^\n]*\n)" "" ${Output} ${Input})
  #message("RemoveCXXComments without single line: '${${Output}}'")

  # Remove several line comments in file
  string(REGEX REPLACE "(/\\*([^*]|[\r\n]|(\\*+([^*/]|[\r\n])))*\\*+/)" "" FileContent         ${FileContent})
  #message("RemoveCXXComments without multi line: '${${Output}}'")

endmacro (RemoveCXXComments)
#-----------------------------------------------------------------






from CMakeLists.txt6:
GenerateIDLLibrary(TestPayload TestPayload.idl)

from IB.DDS.cmake:59:
# Get expected generated files
GetDDSGeneratedFiles(DDSCXXGeneratedFiles DDSHGeneratedFiles ${IdlFile})
# message("CXX Files expected to be generated:     '${DDSCXXGeneratedFiles}'")
#message("H Files expected to be generated:    '${DDSHGeneratedFiles}'")

Answer 1

错误消息提示您的一个变量为空。您可以输出变量并检查哪个变量为空且不应为空。我猜想 Windows 出现问题并且未设置变量。如果变量为空或未设置，CMake 根本看不到您提供了参数。

如果你想强制你的正则表达式，你可以在参数周围加上引号。然后 CMake 知道您提供了正确数量的参数并且它不会提示“”作为参数。但这并不能解决你真正的问题，只能平息你当前的问题。我不建议你这样做，直到你真的知道它没问题。