I am cross-compiling a library (ORBSLAM3) on pc using /usr and /lib
from rpi4 (After using rsync). And I put them in a folder named "rootf".The prerequisite libraries have been installed before so they are now in ~/rootf/usr and ~/rootf/lib. I need to compile ORBSLAM3 using ~/rootf/ as the root.
The thing is I am not familiar with cmake so I have been struggling for a while.
The process of compiling is this:
using Toolchain-rpi.cmake for the CMakeLists.txt on the top level of ORBSLAM3.
In CMakeLists.txt, it finds pangolin by find_package(Pangolin REQUIRED)
find_package() is actually doing the right.
It successfully finds
/home/ethan/raspberrypi/rootfs/usr/local/lib/cmake/Pangolin/PangolinTargets.cmake
The CMAKE_PREFIX_PATH in this CMakeLists.txt is right, which is
/home/ethan/raspberrypi/rootfs/usr/local/lib;/home/ethan/raspberrypi/rootfs/usr/lib/arm-linux-gnueabihf
After I uninstall pangolin on ubuntu, I get this:
CMake Error at /home/ethan/raspberrypi/rootfs/usr/local/lib/cmake/Pangolin/PangolinTargets.cmake:80 (message):
The imported target "pangolin" references the file
"/usr/local/lib/libpangolin.so"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
Since Pangolin was originally installed on board, so on board libpangolin.so is at /usr/local/lib/libpangolin.so.
I guess when I use PangolinTargets.cmake, it is doing the same thing.
I output CMAKE_SYSROOT,CMAKE_PREFIX_PATH,_IMPORT_PREFIX in PangolinTargets.cmake. It's what I expect.
CMAKE_SYSROOT = /home/ethan/raspberrypi/rootfs
CMAKE_PREFIX_PATH = ;/home/ethan/raspberrypi/rootfs/usr/local/lib;/home/ethan/raspberrypi/rootfs/usr/lib/arm-linux-gnueabihf
_IMPORT_PREFIX = /home/ethan/raspberrypi/rootfs/usr/local
Even if I add /home/ethan/raspberrypi/rootfs as prefix to the below paths, nothing changed.
set_target_properties(pangolin PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "/usr/include;/usr/include;/usr/include;/usr/local/include/eigen3;${_IMPORT_PREFIX}/include"
INTERFACE_LINK_LIBRARIES "rt;pthread;/usr/lib/arm-linux-gnueabihf/libGL.so;/usr/lib/arm-linux-gnueabihf/libGLU.so;
INTERFACE_SYSTEM_INCLUDE_DIRECTORIES "/usr/include;/usr/include;/usr/include;/usr/local/include/eigen3"
)
Here is the content of PangolinTargets.cmake. I am not sure which parts leads to searching only /usr. Thanks all.
# Generated by CMake
if("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.5)
message(FATAL_ERROR "CMake >= 2.6.0 required")
endif()
cmake_policy(PUSH)
cmake_policy(VERSION 2.6)
#----------------------------------------------------------------
# Generated CMake target import file.
#----------------------------------------------------------------
# Commands may need to know the format version.
set(CMAKE_IMPORT_FILE_VERSION 1)
# Protect against multiple inclusion, which would fail when already imported targets are added once more.
set(_targetsDefined)
set(_targetsNotDefined)
set(_expectedTargets)
foreach(_expectedTarget pangolin)
list(APPEND _expectedTargets ${_expectedTarget})
if(NOT TARGET ${_expectedTarget})
list(APPEND _targetsNotDefined ${_expectedTarget})
endif()
if(TARGET ${_expectedTarget})
list(APPEND _targetsDefined ${_expectedTarget})
endif()
endforeach()
if("${_targetsDefined}" STREQUAL "${_expectedTargets}")
unset(_targetsDefined)
unset(_targetsNotDefined)
unset(_expectedTargets)
set(CMAKE_IMPORT_FILE_VERSION)
cmake_policy(POP)
return()
endif()
if(NOT "${_targetsDefined}" STREQUAL "")
message(FATAL_ERROR "Some (but not all) targets in this export set were already defined.\nTargets Defined: ${_targetsDefined}\nTargets not yet defined: ${_targetsNotDefined}\n")
endif()
unset(_targetsDefined)
unset(_targetsNotDefined)
unset(_expectedTargets)
# Compute the installation prefix relative to this file.
get_filename_component(_IMPORT_PREFIX "${CMAKE_CURRENT_LIST_FILE}" PATH)
get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH)
get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH)
get_filename_component(_IMPORT_PREFIX "${_IMPORT_PREFIX}" PATH)
if(_IMPORT_PREFIX STREQUAL "/")
set(_IMPORT_PREFIX "")
endif()
# Create imported target pangolin
add_library(pangolin SHARED IMPORTED)
set_target_properties(pangolin PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "/usr/include;/usr/include;/usr/include;/usr/local/include/eigen3;${_IMPORT_PREFIX}/include"
INTERFACE_LINK_LIBRARIES "rt;pthread;/usr/lib/arm-linux-gnueabihf/libGL.so;/usr/lib/arm-linux-gnueabihf/libGLU.so;/usr/lib/arm-linux-gnueabihf/libGLEW.so;/usr/lib/arm-linux-gnueabihf/libEGL.so;/usr/lib/arm-linux-gnueabihf/libSM.so;/usr/lib/arm-linux-gnueabihf/libICE.so;/usr/lib/arm-linux-gnueabihf/libX11.so;/usr/lib/arm-linux-gnueabihf/libXext.so;rt;pthread;/usr/lib/arm-linux-gnueabihf/libdc1394.so;/usr/lib/arm-linux-gnueabihf/libpng.so;/usr/lib/arm-linux-gnueabihf/libz.so;/usr/lib/arm-linux-gnueabihf/libjpeg.so;/usr/lib/arm-linux-gnueabihf/libtiff.so;/usr/lib/arm-linux-gnueabihf/libIlmImf.so"
INTERFACE_SYSTEM_INCLUDE_DIRECTORIES "/usr/include;/usr/include;/usr/include;/usr/local/include/eigen3"
)
if(CMAKE_VERSION VERSION_LESS 2.8.12)
message(FATAL_ERROR "This file relies on consumers using CMake 2.8.12 or greater.")
endif()
# Load information for each installed configuration.
get_filename_component(_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
file(GLOB CONFIG_FILES "${_DIR}/PangolinTargets-*.cmake")
foreach(f ${CONFIG_FILES})
include(${f})
endforeach()
# Cleanup temporary variables.
set(_IMPORT_PREFIX)
# Loop over all imported files and verify that they actually exist
foreach(target ${_IMPORT_CHECK_TARGETS} )
foreach(file ${_IMPORT_CHECK_FILES_FOR_${target}} )
if(NOT EXISTS "${file}" )
message(FATAL_ERROR "The imported target \"${target}\" references the file
\"${file}\"
but this file does not exist. Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
\"${CMAKE_CURRENT_LIST_FILE}\"
but not all the files it references.
")
endif()
endforeach()
unset(_IMPORT_CHECK_FILES_FOR_${target})
endforeach()
unset(_IMPORT_CHECK_TARGETS)
# This file does not depend on other imported targets which have
# been exported from the same project but in a separate export set.
# Commands beyond this point should not need to know the version.
set(CMAKE_IMPORT_FILE_VERSION)
cmake_policy(POP)
how to show the path of the file for the one that we search using find_package( )?
CMAKE_PREFIX_PATH
Semicolon-separated list of directories specifying installation prefixes to be searched by the find_package()...
set(CMAKE_PREFIX_PATH /home/users/rootf/usr/local/lib)
# additionalllly I also do a precaution
set(CMAKE_IGNORE_PATH / /bin /include /usr/lib /usr/local/lib)
You might also to manipulate with CMAKE_FIND_USE_*_PATH variables.
Related
I have the simplest possible c-library which builds and is packed using the following CMakeLists.txt:
cmake_minimum_required(VERSION 3.5)
project (libfoo C)
add_library(foo SHARED impl.c)
target_link_libraries(foo)
install(TARGETS foo LIBRARY DESTINATION lib/)
install(FILES public_header.h DESTINATION include/libfoo)
set(CPACK_GENERATOR "TGZ")
include(CPack)
Working example is located here: https://github.com/bjarkef/cmake-simple/tree/master/libfoo
I execute mkdir -p build; (cd build/; cmake ../; make all package;) to build a .tar.gz package with the compiled shared library along with its public header file. This is all working fine.
Now I wish to modify the CMakeLists.txt to create the FooConfig.cmake and FooConfigVersion.cmake files needed for CMake find_package in a different project to find the foo library. How do I do this?
I have discovered I should used the CMakePackageConfigHelpers: configure_package_config_file and write_basic_package_version_file, and I should create a FooLibraryConfig.cmake.in file. However I cannot figure out how to put it all together.
Note that it is important the the resulting .cmake files only contains relative paths.
I have cmake module included in the top level CmakeList.txt:
# Generate and install package config files
include(PackageConfigInstall)
Within the generic PackageConfigInstall.cmake file, the config files are created from the cmake.in files, and installed. This module can be reused for other packages.
include(CMakePackageConfigHelpers)
# Generate package config cmake files
set(${PACKAGE_NAME}_LIBRARY_NAME ${CMAKE_SHARED_LIBRARY_PREFIX}${PACKAGE_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX})
configure_package_config_file(${PACKAGE_NAME}-config.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/${PACKAGE_NAME}-config.cmake
INSTALL_DESTINATION ${CMAKE_INSTALL_DIR}/${PACKAGE_NAME}
PATH_VARS LIB_INSTALL_DIR INCLUDE_INSTALL_DIR APP_INCLUDE_INSTALL_DIR )
configure_file(${PACKAGE_NAME}-config-version.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/${PACKAGE_NAME}-config-version.cmake #ONLY)
# Install package config cmake files
install(
FILES
${CMAKE_CURRENT_BINARY_DIR}/${PACKAGE_NAME}-config.cmake
${CMAKE_CURRENT_BINARY_DIR}/${PACKAGE_NAME}-config-version.cmake
DESTINATION
${CMAKE_INSTALL_DIR}/${PACKAGE_NAME}
COMPONENT
devel
)
You'll need a package file for your library, such as your_lib-config.cmake.in, which will become your_lib-config.cmake. This will contain the include and library variables that can be used.
get_filename_component(YOUR_LIB_CMAKE_DIR "${CMAKE_CURRENT_LIST_FILE}" PATH)
# flag required by CMakePackageConfigHelpers
#PACKAGE_INIT#
set_and_check(YOUR_LIB_INCLUDE_DIR #PACKAGE_YOUR_LIB_INCLUDE_INSTALL_DIR#/hal)
set_and_check(YOUR_LIB_LIBRARY #PACKAGE_LIB_INSTALL_DIR#/#CMAKE_STATIC_LIBRARY_PREFIX##PROJECT_NAME_LIB##CMAKE_STATIC_LIBRARY_SUFFIX#)
set_and_check(YOUR_LIB_LIBRARIES #PACKAGE_LIB_INSTALL_DIR#/#CMAKE_STATIC_LIBRARY_PREFIX##PROJECT_NAME_LIB##CMAKE_STATIC_LIBRARY_SUFFIX#)
You'll also want a config-version.cmake.in file like this:
set(PACKAGE_VERSION #PACKAGE_VERSION#)
# Check whether the requested PACKAGE_FIND_VERSION is compatible
if("${PACKAGE_VERSION}" VERSION_LESS "${PACKAGE_FIND_VERSION}")
set(PACKAGE_VERSION_COMPATIBLE FALSE)
else()
set(PACKAGE_VERSION_COMPATIBLE TRUE)
if ("${PACKAGE_VERSION}" VERSION_EQUAL "${PACKAGE_FIND_VERSION}")
set(PACKAGE_VERSION_EXACT TRUE)
endif()
endif()
There's quite a bit to the packaging scripts to get it all to work just right. I went through a lot of trial and error to finally get something that works on different targets (both linux server and embedded target). I might have left something out, so please just comment and I'll update answer.
I need to install SFML by sources but I can't run cmake because a package is not installed (xcb-image)
I installed this packages by sources, but how can I tell CMake that this package is installed, and that it needs to look at a special directory?
if(NOT SFML_OPENGL_ES)
find_package(OpenGL REQUIRED)
include_directories(${OPENGL_INCLUDE_DIR})
if(SFML_OS_LINUX OR SFML_OS_FREEBSD)
find_package(XCB COMPONENTS xlib_xcb image randr REQUIRED)
if(NOT LIBXCB_FOUND)
message(FATAL_ERROR "Xcb library not found")
endif()
include_directories(${LIBXCB_INCLUDE_DIRS})
endif()
endif()
I don't have root access.
Try adding your xcb /include and /lib directory to your CMakeLists, by adding the following lines :
INCLUDE_DIRECTORIES(/path/to/your/xcb/include)
LINK_DIRECTORIES(/path/to/your/xcb/lib)
Otherwise, if that didn't work and you have a cmake file for cxb (sth like xcb.cmake), Create a folder named cmake/Modules/ under your project root, add xcb.cmake under that folder, and in the root CMakeLists.txt, include the following code:
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/")
For a better understanding, take a look at CMake:How To Find Libraries
Hope that helps !
this is my current CMakeLists.txt file
cmake_minimum_required(VERSION 3.3)
set(CMAKE_C_FLAGS " -Wall -g ")
project( bmi )
file( GLOB SRCS *.cpp *.h )
add_executable( bmi ${SRCS})
This builds from my source directory, but I have to clean up all the extra files after. My question is how do I build this from a build directory if all my source files are in the same source directory?
thanks
If you really need to use file(GLOB …), this CMakeLists.txt should work :
cmake_minimum_required(VERSION 3.3)
project(bmi)
add_definitions("-Wall" "-g")
include_directories(${PROJECT_SOURCE_DIR})
file(GLOB SRC_FILES ${PROJECT_SOURCE_DIR}/*.cpp)
add_executable(bmi ${SRC_FILES})
In this case you have to launch cmake from your build directory every time you add or delete a source file :
cmake <your_source_dir> -G <your_build_generator>
As Phil reminds, CMake documentation doesn't recommend this use of GLOB. But there are some exceptions. You'll get more information on this post.
If you don't meet those exceptions, you'd rather list your source files than use GLOB :
set(SRC_FILES ${PROJECT_SOURCE_DIR}/main.cpp
${PROJECT_SOURCE_DIR}/bmi.cpp
… )
NB : if you have #include of your .h files in .cpp files, I don't see any reason to put them in add_executable, you just need to specify include directory with include_directories.
Cmake used to only update the list of source files if CMakeLists.txt was changed since the last cmake run or if cmake was used to configure the project again.
In cmake 3.11.0 recursive search and automatic re-configuration on adding or deleting source files was added. Since then you can use the following snippet:
if(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.11.0")
file(GLOB_RECURSE SOURCE_FILES CONFIGURE_DEPENDS *.cpp *.h)
else()
file(GLOB SOURCE_FILES *.cpp *.h */*.h */*.cpp)
endif()
The file() command after the else() provides at least a bit of backwards compatibility: It still searches for source files in the current folder and its direct subfolders. But it doesn't automatically recognize if there are new files or old files have been deleted.
Note that VERSION_GREATER_EQUAL is only available in cmake >= 3.7
How can I specify different installation prefixes for the different CPACK_GENERATORs?
For example:
the DEB package should be installed to /opt/project
the TGZ archive should consist only of the project directory
From the documentation I understood that I would have to use the CPACK_PROJECT_CONFIG_FILE variable. Using that, it should be possible to achieve the desired goal. However, it did not work for me.
This is my CPack configuration:
set(CPACK_GENERATOR "DEB;TGZ")
set(CPACK_PROJECT_CONFIG_FILE ${CMAKE_SOURCE_DIR}/cmake/package.linux.txt)
And this is my ${CMAKE_SOURCE_DIR}/cmake/package.linux.txt file:
IF (CPACK_GENERATOR MATCHES "DEB")
set(CPACK_NATIVE_INSTALL_DIRECTORY "/opt")
set(CMAKE_INSTALL_PREFIX "/opt")
set(CPACK_PACKAGING_INSTALL_PREFIX "/opt")
set(CPACK_INSTALL_DIRECTORY "/opt")
ELSEIF(CPACK_GENERATOR MATCHES "TGZ")
set(CPACK_NATIVE_INSTALL_DIRECTORY "")
set(CMAKE_INSTALL_PREFIX "")
set(CPACK_PACKAGING_INSTALL_PREFIX "")
set(CPACK_INSTALL_DIRECTORY "")
ENDIF()
I have made sure that all files get parsed using MESSAGE() directives, but the prefix of my packages is always /usr/local.
Finally, I found out what was wrong. I had the CPACK_SET_DESTDIR flag set. This makes CPACK append usr/local to the directory containing the binaries of the compilation. After removing the corresponding SET() directive, everything worked like a charm.
For the record I will provide you with my minimal working example.
CMakeLists.txt:
cmake_minimum_required(VERSION 3.2)
project(stripped-down C)
add_executable(main main.c)
install(TARGETS main
RUNTIME DESTINATION bin
)
set(CPACK_GENERATOR "DEB;TGZ")
set(CPACK_PROJECT_CONFIG_FILE ${CMAKE_SOURCE_DIR}/package.txt)
set(CPACK_PACKAGE_CONTACT "Some One <some.one#somewhere.com>")
include(CPack)
${CMAKE_SOURCE_DIR}/package.txt:
IF (CPACK_GENERATOR MATCHES "DEB")
set(CPACK_PACKAGING_INSTALL_PREFIX "/opt")
ELSEIF(CPACK_GENERATOR MATCHES "TGZ")
set(CPACK_PACKAGING_INSTALL_PREFIX "")
ENDIF()
I have a problem with CMake. I have wrote a CMakeList.txt file. But when I run it with Cmake I got a strange error "CMake Error at CMakeLists.txt:17 (target_link_libraries):
Cannot specify link libraries for target "debug" which is not built by this
project.".
Is it possible to create a Cmake file that can build a project file for Debug and Release mode at the same time? Or is there a simple way to fix this error?
My CMakeLists.txt looks like this:
cmake_minimum_required (VERSION 2.8)
project (SimuVille)
# Import required CMake files
set (CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/Modules")
file(GLOB_RECURSE files
"*.cpp"
)
add_executable(debug ${files})
# Find the find Modules
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake_modules" ${CMAKE_MODULE_PATH})
#Find any version 2.X of SFML
#See the FindSFML.cmake file for additional details and instructions
find_package(SFML 2 REQUIRED system window graphics network audio)
if(SFML_FOUND)
include_directories(${SFML_INCLUDE_DIR})
target_link_libraries(${EXECUTABLE_NAME} ${SFML_LIBRARIES})
endif()
#Find SfeMovie
find_package(sfeMovie REQUIRED)
if(SFEMOVIE_FOUND)
include_directories(${SFEMOVIE_INCLUDE_DIR})
target_link_libraries(${EXECUTABLE_NAME} ${SFEMOVIE_LIBRARY})
endif()
#Find Assimp
find_package(ASSIMP REQUIRED)
if(ASSIMP_FOUND)
include_directories(${ASSIMP_INCLUDE_DIR})
target_link_libraries(${EXECUTABLE_NAME} ${ASSIMP_LIBRARY})
endif()
#Find DevIL
find_package(DevIL REQUIRED)
if(IL_FOUND)
include_directories(${IL_INCLUDE_DIR})
target_link_libraries(${EXECUTABLE_NAME} ${IL_LIBRARY})
target_link_libraries(${EXECUTABLE_NAME} ${ILU_LIBRARY})
target_link_libraries(${EXECUTABLE_NAME} ${ILUT_LIBRARY})
endif()
#Find opengl libs
find_package(OpenGL REQUIRED)
include_directories(${OpenGL_INCLUDE_DIRS})
link_directories(${OpenGL_LIBRARY_DIRS})
add_definitions(${OpenGL_DEFINITIONS})
if(NOT OPENGL_FOUND)
message(ERROR " OPENGL not found!")
endif(NOT OPENGL_FOUND)
#file(GLOB_RECURSE hfiles
# "*.h"
#)
#add_executable(SimuVille ${hfiles})
LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/Game)
LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/GameEngine)
LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/GameEngine/SfmlObject)
LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/GameEngine/Camera)
LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/GameEngine/OpenglObject)
LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/GameEngine/Playable)
Edit: Added new source code.
Looks like your CMakeLists.txt doesn't contain either of two lines (which depends you are creating a library or a executable)
add_library(debug <files Name>)
OR
add_executable(debug <files Name>)
If you have these lines in your file, place it before target_link_libraries ()