问题描述和解决办法
整个项目包括: 库、测试程序,都是基于源码生成;测试程序肯定是executable类型了,而如果生成的库是SHARED类型,在windows下就是.dll(以及对应的.lib)文件。
执行测试程序时,出现"xxx.dll"找不到,其中"xxx.dll"是整个解决方案产生的那个共享库。
虽然可以手动复制xxx.dll到yyy.exe的目录,但是每次手动复制很低效。
通过在add_subdirectory()前设定:
set(LIBRARY_OUTPUT_PATH "${CMAKE_BINARY_DIR}")
set(EXECUTABLE_OUTPUT_PATH "${CMAKE_BINARY_DIR}")
就能够分别在CMAKE_BINARY_DIR/Debug或CMAKE_BINARY_DIR/Release下得到xxx.lib和yyy.exe在一块儿了。
例子:给opencv1.0.0添加cmake支持
根目录的CMakeLists.txt如下:
cmake_minimum_required(VERSION 3.13)
project(opencv_100)
add_definitions(
-DCVAPI_EXPORTS
-DHAVE_JPEG
-DHAVE_PNG
-DHAVE_TIFF
-DHAVE_JASPER
)
include_directories(
"cv/include"
"cv/src"
"cxcore/Include"
"cvaux/include"
"otherlibs/highgui"
"otherlibs/_graphics/include"
)
link_directories("otherlibs/_graphics/lib")
set(LIBRARY_OUTPUT_PATH "${CMAKE_BINARY_DIR}")
set(EXECUTABLE_OUTPUT_PATH "${CMAKE_BINARY_DIR}")
if (CMAKE_SYSTEM_NAME MATCHES "Windows")
#message("inside windows")
# add SAFESEH to Visual Studio. copied from http://www.reactos.org/pipermail/ros-diffs/2010-November/039192.html
#if(${_MACHINE_ARCH_FLAG} MATCHES X86) # fails
#message("inside that branch")
# in VS2013, there is: fatal error LNK1104: cannot open file "LIBC.lib"
# so, we have to add /NODEFAULTLIB:LIBC.LIB
# reference: https://stackoverflow.com/questions/6016649/cannot-open-file-libc-lib
set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /SAFESEH:NO /NODEFAULTLIB:LIBC.LIB")
set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} /SAFESEH:NO /NODEFAULTLIB:LIBC.LIB")
set (CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} /SAFESEH:NO /NODEFAULTLIB:LIBC.LIB")
#endif()
endif (CMAKE_SYSTEM_NAME MATCHES "Windows")
add_subdirectory("cxcore")
add_subdirectory("cv")
add_subdirectory("cvaux")
add_subdirectory("otherlibs/highgui")
add_subdirectory("samples")
# add_subdirectory("ml")
# add_subdirectory("otherlibs/cvcam")