如何将Qt5的CMakelists从Windows修改到Linux?

Question

(问题已经解决)

如果只是$qtcreator openglwindow/openglwindow.proQt5-OpenGL-example(http://doc.qt.io/qt-5/qtgui-openglwindow-example.html)，它将编译

我的CMakelist可以在Win10上构建，但是在linux失败时，命令是：

[user]$ mkdir build && cd build && cmake .. && make 

它输出错误如下：

Scanning dependencies of target QtGL_test_automoc 
[ 20%] Automatic mocfor target QtGL_test 
Generating moc source QtGL_test_automoc.dir/moc_openglwindow_LRW7M26ARLGWDK.cpp 
Generating moc compilation QtGL_test_automoc.cpp 
[ 20%] Built target
QtGL_test_automoc Scanning dependencies of target QtGL_test 
[ 40%] Building CXX object CMakeFiles/QtGL_test.dir/main.cpp.o
c++: fatal error: no input files compilation terminated. 
/bin/sh:-DQT_CORE_LIB: command not found 
make[2]: *** [CMakeFiles/QtGL_test.dir/build.make:63: MakeFiles/QtGL_test.dir/main.cpp.o] Error 127 
make[1]: ***[CMakeFiles/Makefile2:68: CMakeFiles/QtGL_test.dir/all] Error 2 make:
*** [Makefile:84: all] Error 2

我试图弄清楚如何修改Linux的跨平台版本。

这是我的CMakeLists.txt：

cmake_minimum_required (VERSION 3.5)
set(PRROJ_NAME QtGL_test) 
project (${PRROJ_NAME})
set(HEADERS ${HEADERS} openglwindow.h ) 
set(SOURCES ${SOURCES} main.cpp ${HEADERS}) 
set(CMAKE_AUTOMOC ON)
add_executable(${PRROJ_NAME} ${SOURCES})
set(PROJ_INCLUDE_DIRS ${PROJ_INCLUDE_DIRS} ${CMAKE_SOURCE_DIR})
add_library(openglwindow openglwindow.cpp) 
set(PROJ_LIBRARIES ${PROJ_LIBRARIES} openglwindow)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
if(WIN32)
find_path(CMAKE_PREFIX_PATH NAMES lib/cmake/Qt5/Qt5Config.cmake HINTS
"$ENV{Qt5_ROOT}"
)
message("Qt5_ROOT is $ENV{Qt5_ROOT}") 
endif() 
message("CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH}")
list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/Modules)
set(NEED_QT_COMPONENTS QTCORE QTGUI)
message("finding ${NEED_QT_COMPONENTS}")
foreach(COMPONENT Gui Core)
message("find_package(Qt5${COMPONENT})")
find_package("Qt5${COMPONENT}")
message("Qt5${COMPONENT}_FOUND is ${Qt5${COMPONENT}_FOUND}")
if("${Qt5${COMPONENT}_FOUND}")
set(PROJ_INCLUDE_DIRS ${PROJ_INCLUDE_DIRS} "${Qt5${COMPONENT}_INCLUDE_DIRS}")
set(PROJ_LIBRARIES ${PROJ_LIBRARIES} "Qt5::${COMPONENT}")
add_definitions("${Qt5${COMPONENT}_DEFINITIONS}")
qt5_use_modules(${PRROJ_NAME} ${COMPONENT})
endif() 
endforeach(COMPONENT )
message("include_directories(${PROJ_INCLUDE_DIRS})")
include_directories(${PROJ_INCLUDE_DIRS})
message("target_link_libraries(${PRROJ_NAME} ${PROJ_LIBRARIES})")
target_link_libraries(${PRROJ_NAME} ${PROJ_LIBRARIES})
set(CMAKE_CXX_STANDARD 14)
if(UNIX)
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -I/usr/local/include -Wall")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -L/usr/local/lib") 
endif()

Answer 1

最终解决的版本：

cmake_minimum_required (VERSION 3.5)
set(PRROJ_NAME QtGL_test) 
project (${PRROJ_NAME})
set(HEADERS ${HEADERS} openglwindow.h ) 
set(SOURCES ${SOURCES} main.cpp ${HEADERS}) 
set(CMAKE_AUTOMOC ON)
add_executable(${PRROJ_NAME} ${SOURCES})
set(PROJ_INCLUDE_DIRS ${PROJ_INCLUDE_DIRS} ${CMAKE_SOURCE_DIR})
add_library(openglwindow openglwindow.cpp) 
set(PROJ_LIBRARIES ${PROJ_LIBRARIES} openglwindow)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
if(WIN32)
find_path(CMAKE_PREFIX_PATH NAMES lib/cmake/Qt5/Qt5Config.cmake HINTS
"$ENV{Qt5_ROOT}"
)
message("Qt5_ROOT is $ENV{Qt5_ROOT}") 
endif() 
message("CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH}")
list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/Modules)
set(QT_FLAGS "-fPIC")
set(NEED_QT_COMPONENTS QTCORE QTGUI)
message("finding ${NEED_QT_COMPONENTS}")
foreach(COMPONENT Gui Core)
message("find_package(Qt5${COMPONENT})")
find_package("Qt5${COMPONENT}")
message("Qt5${COMPONENT}_FOUND is ${Qt5${COMPONENT}_FOUND}")
if("${Qt5${COMPONENT}_FOUND}")
set(PROJ_INCLUDE_DIRS ${PROJ_INCLUDE_DIRS} "${Qt5${COMPONENT}_INCLUDE_DIRS}")
set(PROJ_LIBRARIES ${PROJ_LIBRARIES} "Qt5::${COMPONENT}")
#Open add_definitions  will error
#add_definitions("${Qt5${COMPONENT}_DEFINITIONS}")
qt5_use_modules(${PRROJ_NAME} ${COMPONENT})
endif() 
endforeach(COMPONENT )
message("include_directories(${PROJ_INCLUDE_DIRS})")
include_directories(${PROJ_INCLUDE_DIRS})
message("target_link_libraries(${PRROJ_NAME} ${PROJ_LIBRARIES})")
target_link_libraries(${PRROJ_NAME} ${PROJ_LIBRARIES})
set(CMAKE_CXX_STANDARD 14)
if(UNIX)
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${QT_FLAGS} -I/usr/local/include -Wall")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -L/usr/local/lib") 
endif()