cmake os x失败，没有特定的存档成员 [英] cmake os x failure ar no archive members specific

问题描述

我有一个简单的cmake项目，无法在OS X 10.8.4上进行编译. cmake/make程序在Linux上运行良好，但在OS X上却出现此错误:

I have a simple cmake project going that I can't get to compile on OS X 10.8.4. The cmake/make process works great on Linux but on OS X I am getting this error:

Linking CXX static library libImageFilter.a
ar: no archive members specified
...
make[2]: *** [lib/libImageFilter.a] Error 1
make[1]: *** [lib/CMakeFiles/ImageFilter.dir/all] Error 2
make: *** [all] Error 2

我在两个平台上都使用Eclipse CDT4 Generator Unix MakeFile.这似乎与两个系统上ar之间的差异有关.但是，我在Google上找不到很多可以帮助我解决问题的信息.

I am using the Eclipse CDT4 Generator Unix MakeFile on both platforms. This seems like something to with the difference between ar on the two systems. But, I couldn't find much on google to help me troubleshoot.

这是您的更多信息

src/CMakeList.txt

src/CMakeList.txt

make_minimum_required(VERSION 2.8)
project(itkNormals)
FIND_PACKAGE (ITK REQUIRED)
IF( ITK_FOUND )
  include( ${ITK_USE_FILE} )
ENDIF( ITK_FOUND )
add_subdirectory(test)
add_subdirectory(lib)

src/lib/CMakeList.txt

src/lib/CMakeList.txt

add_library(DotImageFilter itkDotImageFilter.h)
SET_TARGET_PROPERTIES(DotImageFilter PROPERTIES LINKER_LANGUAGE CXX)
target_link_libraries(DotImageFilter ${ITK_LIBRARIES})

add_library(ImageFilter itkImageFilter.hxx)
SET_TARGET_PROPERTIES(ImageFilter PROPERTIES LINKER_LANGUAGE CXX)
target_link_libraries(ImageFilter ${ITK_LIBRARIES})

src/test/CMakeLists.txt:

src/test/CMakeLists.txt:

include_directories(${PROJECT_SOURCE_DIR}/lib)

add_executable(itkNormalsMain itkNormals.cxx)
TARGET_LINK_LIBRARIES(itkNormalsMain ${ITK_LIBRARIES})
TARGET_LINK_LIBRARIES(itkNormalsMain ImageFilter)
TARGET_LINK_LIBRARIES(itkNormalsMain DotImageFilter)

add_executable(dotTestMain dotTester.cxx)
TARGET_LINK_LIBRARIES(dotTestMain ${ITK_LIBRARIES})
TARGET_LINK_LIBRARIES(dotTestMain ImageFilter)
TARGET_LINK_LIBRARIES(dotTestMain DotImageFilter)

add_executable(IST ImageSourceTest.cxx)
TARGET_LINK_LIBRARIES(IST ${ITK_LIBRARIES})
TARGET_LINK_LIBRARIES(IST ImageFilter)

推荐答案

您不能从一个头文件创建库:

You can't create library from one header file:

add_library(ImageFilter itkImageFilter.hxx)
SET_TARGET_PROPERTIES(ImageFilter PROPERTIES LINKER_LANGUAGE CXX)
target_link_libraries(ImageFilter ${ITK_LIBRARIES})

这就是为什么您明确设置LINKER_LANGUAGE的原因-没有没有链接并且cmake感到困惑.

that's the reason why you set LINKER_LANGUAGE explicitly - there is nothing to link and cmake is confused.

所以include_directories就足够了:

include_directories(${PROJECT_SOURCE_DIR}/lib)

---

顺便说一句:

如果您指定REQUIRED，则无需检查ITK_FOUND:

You don't need to check ITK_FOUND if you specify REQUIRED:

FIND_PACKAGE (ITK REQUIRED)
IF( ITK_FOUND )
  include( ${ITK_USE_FILE} )
ENDIF( ITK_FOUND )

来自文档:

The REQUIRED option stops processing with an error message if the package cannot be found.

PROJECT_SOURCE_DIR不必等于itkNormals_SOURCE_DIR(您可以从其他项目使用此文件):

PROJECT_SOURCE_DIR is not necessary equal itkNormals_SOURCE_DIR (you may use this file from other project):

include_directories(${PROJECT_SOURCE_DIR}/lib)

可以通过以下一种方式修复:

Can be fixed one of this way:

include_directories(${itkNormals_SOURCE_DIR}/lib)
include_directories(${CMAKE_CURRENT_LIST_DIR}/../lib)

或只是从父文件中包含:

or simply include from parent file:

# src/CMakeLists.txt
include_directories("./lib")

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