My question is what libs linked about CGAL::Eigen3_support?
# CMakeList.txt : CMake project for XXX, include source and define
project specific logic here.
cmake_minimum_required (VERSION 3.8)
include_directories("/usr/include/eigen3")
TODO: Add tests and install targets if needed.
find_package(CGAL REQUIRED)
find_package(Eigen3 3.4.0 REQUIRED) #(3.1.0 or greater)
include(CGAL_Eigen3_support)
if(NOT TARGET CGAL::Eigen3_support)
message(
STATUS "This project requires the Eigen library, and will not be compiled.")
return()
endif()
create_single_source_cgal_program("XXX.cpp")
foreach(target XXX)
target_link_libraries(${target} PUBLIC CGAL::Eigen3_support)
endforeach()
Related
I am using the following cmake file:
cmake_minimum_required(VERSION 3.19)
project(Neon LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 17)
list(PREPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
option(LIBIGL_WITH_OPENGL "Use OpenGL" ON)
option(LIBIGL_WITH_OPENGL_GLFW "Use GLFW" ON)
option(LIBIGL_WITH_OPENGL_GLFW_IMGUI "Use ImGui" ON)
include(libigl)
find_package(Boost REQUIRED COMPONENTS unit_test_framework)
add_executable(Neon src/main.cpp)
target_include_directories(${PROJECT_NAME} PUBLIC
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}}/include>
$<INSTALL_INTERFACE:include>)
target_link_libraries(Neon PUBLIC Eigen3::Eigen igl::core igl::opengl_glfw solvers)
add_subdirectory(solvers)
I have my main executable, and I have my subdirectory "solvers" which has some other numerical routines. The CMake file for that is as follows:
project(solvers)
add_library(${PROJECT_NAME} SHARED src/LinearElastic.cpp)
target_include_directories(${PROJECT_NAME}
PUBLIC
$<INSTALL_INTERFACE:include>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
PRIVATE
${CMAKE_CURRENT_SOURCE_DIR}/src)
install(TARGETS ${PROJECT_NAME} EXPORT ${PROJECT_NAME}Config
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
target_link_libraries(${PROJECT_NAME} igl::core Eigen3::Eigen)
install(DIRECTORY include/ DESTINATION "${INSTALL_INCLUDE_DIR}")
install(EXPORT ${PROJECT_NAME}Config DESTINATION share/${PROJECT_NAME}/cmake)
export(TARGETS ${PROJECT_NAME} FILE ${PROJECT_NAME}Config.cmake
Eigen and IGL are both libraries which are found from the following:
if(TARGET igl::core)
return()
endif()
include(FetchContent)
FetchContent_Declare(
libigl
GIT_REPOSITORY https://github.com/libigl/libigl.git
GIT_TAG v2.3.0
)
# Note: In libigl v3.0.0, the following will become a one-liner:
# FetchContent_MakeAvailable(libigl)
FetchContent_GetProperties(libigl)
if(NOT libigl_POPULATED)
FetchContent_Populate(libigl)
endif()
list(PREPEND CMAKE_MODULE_PATH "${libigl_SOURCE_DIR}/cmake")
include(${libigl_SOURCE_DIR}/cmake/libigl.cmake)
Building the main executable has no issues whatsoever, however, when attempting to use the dependencies from the libigl library in the submodule, I am encountering a lot of problems where the imports are unable to resolve. In particular, when attempting to use Eigen, I get "Cannot open include file" errors.
I have tried googling this issue, but none seem to cover the case when I am using a custom-written include() for a library. Ordinarily I'd just find_package in the submodules, but this doesn't seem to work correctly. I assume this is something silly, or perhaps I'm misunderstanding. Please let me know if I can improve the clarity of the question.
The particular error is here:
#ifndef NEON_LINEARELASTIC_H
#define NEON_LINEARELASTIC_H
#include <Eigen/Dense> // "Cannot include" error
class LinearElastic {
public:
Eigen::MatrixXi foobar;
auto doIt() -> void;
};
#endif//NEON_LINEARELASTIC_
I was able to solve this problem. I am typically used to a unix-based environment, so when attempting to apply the same typical thinking to windows, I encountered a few issues, namely, the way different compilers handle shared linking. To avoid rehashing what is already known, I defer to this post to allow anyone else encountering this issue to solve the problem.
I changed the CMakeLists.txt for my main executable to the following:
cmake_minimum_required(VERSION 3.19)
project(Neon LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_BINARY_DIR ${CMAKE_SOURCE_DIR}/bin)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set(INSTALL_LIB_DIR lib CACHE PATH "Install directory for library code")
set(INSTALL_BIN_DIR CACHE PATH "Install directory for executables")
set(INSTALL_INCLUDE_DIR include CACHE PATH "Install directory for header files")
list(PREPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
option(LIBIGL_WITH_OPENGL "Use OpenGL" ON)
option(LIBIGL_WITH_OPENGL_GLFW "Use GLFW" ON)
option(LIBIGL_WITH_OPENGL_GLFW_IMGUI "Use ImGui" ON)
include(libigl)
if(MSVC) // This line fixed it!
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
set(BUILD_SHARED_LIBS TRUE)
endif()
foreach(p LIB BIN INCLUDE CMAKE)
set(var INSTALL_${p}_DIR)
if(NOT IS_ABSOLUTE "${${var}}")
set(${var} "${CMAKE_INSTALL_PREFIX}/${${var}}")
endif()
endforeach()
find_package(Boost REQUIRED COMPONENTS unit_test_framework)
include_directories("${PROJECT_SOURCE_DIR}"
"${PROJECT_BINARY_DIR}")
add_executable(Neon src/main.cpp)
target_include_directories(${PROJECT_NAME} PUBLIC
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}}/include>
$<INSTALL_INTERFACE:include>)
target_link_libraries(Neon PRIVATE Eigen3::Eigen igl::core igl::opengl_glfw solvers)
add_subdirectory(solvers)
By setting the windows-specific options, the app was able to build and run without issue.
I get this error, which I've been trying to understand for some time now but getting nowhere.
add_library cannot create target "Plugin" because another target
with the same name already exists. The existing target is a shared library created
in source directory "D:/CHAI3D/SOFA/src/applications/plugins/plugin".
See documentation for policy CMP0002 for more details.
Below is the CMakelists.txt added for reference. I tried to remove the unnecessary code. So far, I've tried allowing duplicate targets with set(ALLOW_DUPLICATE_CUSTOM_TARGETS TRUE)
But to no avail
cmake_minimum_required(VERSION 3.1)
project(Plugin VERSION 21.06.99)
# Policies
cmake_policy(SET CMP0079 NEW)
set(ALLOW_DUPLICATE_CUSTOM_TARGETS TRUE)
set (PLUGIN_VERSION ${PROJECT_VERSION})
set(HEADER_FILES
src/initPlugin.h
...
)
set(SOURCE_FILES
src/initPlugin.cpp
...
)
file(GLOB_RECURSE RESOURCE_FILES "*.md" "*.psl" "*.py" "*.pyscn" "*.scn" "*.ah")
add_library(${PROJECT_NAME} SHARED ${HEADER_FILES} ${SOURCE_FILES} ${RESOURCE_FILES} )
target_include_directories(${PROJECT_NAME} PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>")
set_target_properties(${PROJECT_NAME} PROPERTIES COMPILE_FLAGS "-DSOFA_BUILD_PLUGIN")
target_link_libraries(${PROJECT_NAME} SofaCore SofaConstraint SofaSimpleFem SofaBaseMechanics SofaRigid SofaBaseVisual SofaOpenglVisual)
## Install rules for the library and headers; CMake package configurations files
sofa_create_package_with_targets(
PACKAGE_NAME ${PROJECT_NAME}
PACKAGE_VERSION ${PROJECT_VERSION}
TARGETS ${PROJECT_NAME} AUTO_SET_TARGET_PROPERTIES
INCLUDE_SOURCE_DIR "src"
INCLUDE_INSTALL_DIR ${PROJECT_NAME}
RELOCATABLE "plugins"
)
SET_PROPERTY(GLOBAL PROPERTY USE_FOLDERS ON)
SET_PROPERTY(TARGET ${PROJECT_NAME} PROPERTY FOLDER "plugins")
I want to provide the users of my library with two targets: one that specifies the include path etc., and one that carries useful extra compile options. However, for the extra target some of my users are getting the error
Cannot specify compile options for imported target "myproject::extra"
so it seems on older CMake versions.
I tested with CMake 3.9.2. The test project, including CI is on GitHub, with failing build here.
(How) can my approach be rendered robust for all CMake versions?
The project's main CMakeLists.txt:
cmake_minimum_required(VERSION 3.0)
project(myproject)
add_library(myproject INTERFACE)
set(MYPROJECT_VERSION "1.0.0")
target_include_directories(myproject INTERFACE
$<INSTALL_INTERFACE:include>
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>)
include(CMakePackageConfigHelpers)
include(GNUInstallDirs)
install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/" DESTINATION include)
install(TARGETS myproject EXPORT myproject-targets)
install(EXPORT myproject-targets FILE myprojectTargets.cmake DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/myproject")
write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/myprojectConfigVersion.cmake" VERSION ${MYPROJECT_VERSION} COMPATIBILITY AnyNewerVersion)
install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/myprojectConfig.cmake" "${CMAKE_CURRENT_BINARY_DIR}/myprojectConfigVersion.cmake" DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/myproject")
The project's myprojectConfig.cmake:
include(CMakeFindDependencyMacro)
if(NOT TARGET myproject)
include("${CMAKE_CURRENT_LIST_DIR}/myprojectTargets.cmake")
endif()
if(NOT TARGET myproject::extra)
add_library(myproject::extra INTERFACE IMPORTED)
if(MSVC)
target_compile_options(myproject::extra INTERFACE /W4)
else()
target_compile_options(myproject::extra INTERFACE -Wall)
endif()
endif()
The user's project CMakeLists.txt could then look as follows:
cmake_minimum_required(VERSION 3.0)
project(myexec)
find_package(myproject REQUIRED)
add_executable(myexec main.cpp)
target_link_libraries(myexec PRIVATE myproject myproject::extra)
List of functions applicable for IMPORTED and INTERFACE targets changes as CMake evolves.
Most of such functions affects only on specific target properties. So, instead of calling a function, you may set the property directly. This will work in any CMake version:
# Works only in new CMake versions
target_compile_options(myproject::extra INTERFACE /W4)
# Equivalent which works in any CMake version
set_property(TARGET myproject::extra PROPERTY INTERFACE_COMPILE_OPTIONS /W4)
I am a total noob concerning cmake. My CMakeLists is really basic:
cmake_minimum_required(VERSION 2.4.6)
#set the default path for built executables to the "bin" directory
set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
#set the default path for built libraries to the "lib" directory
set(LIBRARY_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/lib)
#For the Curses library to load:
SET(CURSES_USE_NCURSES TRUE)
include_directories(
"src/"
)
add_subdirectory(src)
when I make the linker does not find the ncurses commands and in the verbose mode of make I see that the compiler did not add the -lncurses. What do I have to add to the CMakeLists to make it work?
For the super noob, remember target_link_libraries() needs to be below add_executable():
cmake_minimum_required(VERSION 2.8) project(main)
find_package(Curses REQUIRED)
include_directories(${CURSES_INCLUDE_DIR})
add_executable(main main.cpp)
target_link_libraries(main ${CURSES_LIBRARIES})
before use some third party libs, you ought to find it!
in case of ncurses you need to add find_package(Curses REQUIRED) and then use ${CURSES_LIBRARIES} in a call to target_link_libraries() and target_include_directories(... ${CURSES_INCLUDE_DIR}).
I have a problem with CMake. I have wrote a CMakeList.txt file. But when I run it with Cmake I got a strange error "CMake Error at CMakeLists.txt:17 (target_link_libraries):
Cannot specify link libraries for target "debug" which is not built by this
project.".
Is it possible to create a Cmake file that can build a project file for Debug and Release mode at the same time? Or is there a simple way to fix this error?
My CMakeLists.txt looks like this:
cmake_minimum_required (VERSION 2.8)
project (SimuVille)
# Import required CMake files
set (CMAKE_MODULE_PATH "${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 ()