Building library with cmake
At a guess, your SFMLwindow
library needs linked to some or all of sfml-main, sfml-system, sfml-window.
You could try changing the end of your CMakeLists.txt to:
add_library(
${LIBRARY_NAME}
SHARED
${SRC_FILES}
${INCLUDE_FILES}
)
add_executable(
${EXECUTABLE_NAME}
main.cpp
)
target_link_libraries(
${LIBRARY_NAME}
sfml-main
sfml-system
sfml-window
)
target_link_libraries(
${EXECUTABLE_NAME}
${LIBRARY_NAME}
)
As an aside, file(GLOB_RECURSE...
is generally frowned upon as a way to gather a list of sources. From the docs for file
:
We do not recommend using GLOB to collect a list of source files from your source tree. If no CMakeLists.txt file changes when a source is added or removed then the generated build system cannot know when to ask CMake to regenerate.
Also, find_library
should be preferred to link_directories
in this case. From the docs for link_directories
:
Note that this command is rarely necessary. Library locations returned by find_package() and find_library() are absolute paths. Pass these absolute library file paths directly to the target_link_libraries() command. CMake will ensure the linker finds them.
Admin
Updated on June 27, 2020Comments
-
Admin almost 4 years
I apologize for bothering you all, but I have a little compilation problem with cmake.
I have a CMakeLists.txt file I'm using to build a test executable, and a shared library. They both have dependency to another library (SFML).
I'm using cmake on window with MinGW.
I know the name of the lib I'm building is kinda confusing with the sfml one, but it's supposed to be a SFML wrapper, so, I didn't find a better name!
Here the CMakeLists.txt
cmake_minimum_required(VERSION 2.6) project(projectName) set(EXECUTABLE_NAME testSFML) set(LIBRARY_NAME SFMLwindow) set(EXECUTABLE_OUTPUT_PATH ${CMAKE_CURRENT_SOURCE_DIR}/bin/) include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include / ${CMAKE_CURRENT_SOURCE_DIR}/../../include ) link_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../lib/) file( GLOB_RECURSE SRC_FILES src/* ) file( GLOB_RECURSE INCLUDE_FILES include/* ) add_executable( ${EXECUTABLE_NAME} main.cpp ${SRC_FILES} ${INCLUDE_FILES} ) target_link_libraries( ${EXECUTABLE_NAME} sfml-main sfml-system sfml-window ) add_library( ${LIBRARY_NAME} SHARED ${SRC_FILES} )
And what I get in the terminal :
"C:\MinGW\bin\mingw32-make.exe" -- Configuring done -- Generating done -- Build files have been written to: C:/Users/iksemel/docs/WorkBench/programming/projets/TestSFML/cmake Linking CXX shared library libSFMLwindow.dll Creating library file: libSFMLwindow.dll.a CMakeFiles\SFMLwindow.dir/objects.a(SFMLWindow.cpp.obj):SFMLWindow.cpp:(.text+0x59):undefined reference to `_imp___ZN2sf9VideoModeC1Ejjj' CMakeFiles\SFMLwindow.dir/objects.a(SFMLWindow.cpp.obj):SFMLWindow.cpp:(.text+0xda): undefined reference to `_imp___ZN2sf6WindowC1ENS_9VideoModeERKSsjRKNS_15ContextSettingsE' CMakeFiles\SFMLwindow.dir/objects.a(SFMLWindow.cpp.obj):SFMLWindow.cpp:(.text+0x163): undefined reference to `_imp___ZN2sf6Window5closeEv' CMakeFiles\SFMLwindow.dir/objects.a(SFMLWindow.cpp.obj):SFMLWindow.cpp:(.text+0x1bd): undefined reference to `_imp___ZN2sf6Window9pollEventERNS_5EventE' CMakeFiles\SFMLwindow.dir/objects.a(SFMLWindow.cpp.obj):SFMLWindow.cpp:(.text+0x1d8): undefined reference to `_imp___ZN2sf6Window7displayEv' collect2: ld a retourné 1 code d'état d'exécution mingw32-make.exe[2]: *** [libSFMLwindow.dll] Error 1 mingw32-make.exe[1]: *** [CMakeFiles/SFMLwindow.dir/all] Error 2 mingw32-make.exe: *** [all] Error 2
If anybody have a clue on what's happening, I'd be very gratefull!