I'm trying to include my custom cmake module.
My folder hierarchy is like so:
- project
- cmake
- add_FetchContent_MakeAvailable.cmake
- CMakeLists.txt
CMakeLists.txt:
cmake_minimum_required(VERSION 3.12.0)
project(proj
VERSION 1.0.0
LANGUAGES CXX)
list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
include(FetchContent)
if(${CMAKE_VERSION} VERSION_LESS 3.14)
include(add_FetchContent_MakeAvailable)
endif()
But I get the following error:
include could not find load file:
add_FetchContent_MakeAvailable
Any ideas?
Related
This question already has an answer here:
cmake variable scope, add_subdirectory
(1 answer)
Closed 7 months ago.
I have two projects - the first one contains the second one as a subdirectory. in the second project I add the path to the my cmake modules in CMAKE_MODULE_PATH, and in the first project I add the second one using the add_subdirectory command. Then I try to include the module in the first project, but cmake saying me:
CMake Error at tests/CMakeLists.txt:7 (include):
include could not find requested file
and the CMAKE_MODULE_PATH is empty.
How I can save value of CMAKE_MODULE_PATH to then use in the first project?
that's my CMakeLists:
2nd project:
cmake_minimum_required(VERSION 3.23 FATAL_ERROR)
set(UTILS_PROJECT_NAME "utils")
set(UTILS_LIB_NAME "utils")
set(UTILS_VERSION_MAJOR 0)
set(UTILS_VERSION_MINOR 0)
set(UTILS_VERSION_PATCH 1)
set(UTILS_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
if(${CMAKE_SOURCE_DIR} STREQUAL ${UTILS_SOURCE_DIR})
set(UTILS_STANDALONE ON)
message(STATUS "utils standalone")
endif()
option(UTILS_BUILD_DOCS "Build the utils documentation" OFF)
option(UTILS_BUILD_TESTS "Guild the utils tests and examples" ${UTILS_STANDALONE})
project(${UTILS_PROJECT_NAME}
VERSION ${UTILS_VERSION_MAJOR}.${UTILS_VERSION_MINOR}.${UTILS_VERSION_PATCH}
LANGUAGES CXX
)
...
setup library target
...
if(NOT "${UTILS_SOURCE_DIR}/cmake" IN_LIST CMAKE_MODULE_PATH)
list(APPEND CMAKE_MODULE_PATH "${UTILS_SOURCE_DIR}/cmake")
endif()
if (${UTILS_BUILD_DOCS})
add_subdirectory(docs)
endif()
if(${UTILS_BUILD_TESTS})
add_subdirectory(tests)
endif()
1st project:
cmake_minimum_required(VERSION 3.23 FATAL_ERROR)
set(ENGINE_PROJECT_NAME "engine")
set(ENGINE_LIB_NAME "engine")
set(ENGINE_VERSION_MAJOR 0)
set(ENGINE_VERSION_MINOR 0)
set(ENGINE_VERSION_PATCH 1)
set(ENGINE_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
if(${CMAKE_SOURCE_DIR} STREQUAL ${ENGINE_SOURCE_DIR})
set(ENGINE_STANDALONE ON)
message(STATUS "engine standalone")
endif()
option(ENGINE_BUILD_TESTS "Build the tests and examples" ${ENGINE_STANDALONE})
project(${ENGINE_PROJECT_NAME}
VERSION ${ENGINE_VERSION_MAJOR}.${ENGINE_VERSION_MINOR}.${ENGINE_VERSION_PATCH}
LANGUAGES CXX
)
# bad way
list(APPEND CMAKE_MODULE_PATH "${ENGINE_SOURCE_DIR}/src/ext/utils/cmake")
add_subdirectory(src) # add_subdirectory(path/to/utils)
if(${ENGINE_BUILD_TESTS})
add_subdirectory(tests) # use utils cmake modules (utils_add_tests)
endif()
In first project, you can use set(CMAKE_MODULE_PATH "/path/to/the/second/project") to set CMAKE_MODULE_PATH, or else CMAKE_MODULE_PATH is empty by default.
Could you show more cmakefile's details for positioning problem?
when building a project stucture like following:
LinearAlgebra
|---HEADER
|-----|---Linear.h
|---SRC
|-----|---Linear.cpp
|---TEST
|-----|---hello_test.cc
here is my CMakeList.txt:
cmake_minimum_required(VERSION 3.10)
project(LinearAlgebra )
set(CMAKE_CXX_STANDARD 11)
include(FetchContent)
FetchContent_Declare(
googletest
URL https://github.com/google/googletest/archive/609281088cfefc76f9d0ce82e1ff6c30cc3591e5.zip
)
# For Windows: Prevent overriding the parent project's compiler/linker settings
set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
FetchContent_MakeAvailable(googletest)
add_library(LA_HEADER INTERFACE header/Linear.h)
add_library(LA_SRC INTERFACE src/Linear.cpp)
target_include_directories(LA_HEADER INTERFACE "${PROJECT_SOURCE_DIR}/header" "${PROJECT_SOURCE_DIR}/src")
enable_testing()
add_executable(
hello_test
test/hello_test.cc
)
target_link_libraries(
hello_test
gtest_main
LA_HEADER
LA_SRC
)
include(GoogleTest)
gtest_discover_tests(hello_test)
it works fine with cmake -S . -B build, but when it comes to cmake --build build following error occured:
Undefined symbols for architecture x86_64:
"Linear::Linear()", referenced from:
HelloTest_BasicAssertions_Test::TestBody() in hello_test.cc.o
it seems something wrong with my cmake file that didn't tell Linear.h where Linear.cpp located. So how to fix it ?? thanks for your help...
seems i misunderstand add_library, change three lines and it works out:
cmake_minimum_required(VERSION 3.10)
project(LinearAlgebra )
include_directories(header) # include_directories instead of add_library for .h files
add_library(LA_LIB src/Linear.cpp) # use add_library for .cpp files only!!!
set(CMAKE_CXX_STANDARD 11)
include(FetchContent)
FetchContent_Declare(
googletest
URL https://github.com/google/googletest/archive/609281088cfefc76f9d0ce82e1ff6c30cc3591e5.zip
)
# For Windows: Prevent overriding the parent project's compiler/linker settings
set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
FetchContent_MakeAvailable(googletest)
enable_testing()
add_executable(
hello_test
test/hello_test.cc
)
target_link_libraries(
hello_test
gtest_main
LA_LIB # link LA_LIB only..
)
include(GoogleTest)
gtest_discover_tests(hello_test)
leave it here for anyone have the same requirements.
I'm totally new to cmake, I'm on MacOs and I'm trying to build a c++ library and I need to link my executables to mpfr in order to make it work
This is my CMakeLists.txt file:
cmake_minimum_required(VERSION 3.19)
project(my_project)
set(CMAKE_CXX_STANDARD 14)
add_executable(my_project main.cpp)
find_package(GSL REQUIRED)
target_link_libraries(my_project GSL::gsl GSL::gslcblas)
find_package(Boost REQUIRED)
target_link_libraries(my_project Boost::boost)
find_package(MPFR REQUIRED) # <- It fails here!
target_link_libraries(my_project MPFR::mpfr)
When I try to build my project with CLion I get the following error:
CMake Error at CMakeLists.txt:13 (find_package):
By not providing "FindMPFR.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "MPFR", but
CMake did not find one.
Could not find a package configuration file provided by "MPFR" with any of
the following names:
MPFRConfig.cmake
mpfr-config.cmake
Add the installation prefix of "MPFR" to CMAKE_PREFIX_PATH or set
"MPFR_DIR" to a directory containing one of the above files. If "MPFR"
provides a separate development package or SDK, be sure it has been
installed.
After some research I found out that Cmake was linking correctly both GSL and Boost because there are both a /usr/local/share/cmake/Modules/FindGSL.cmake and a /usr/local/share/cmake/Modules/FindBoost.cmake file, So I looked online for a FindMPFR.cmake file to insert into the /usr/local/share/cmake/Modules/ directory, I tried with this one but the error remains the same. What am I doing wrong?
Edit:
Ok now my CMakeLists.txt file looks like this:
cmake_minimum_required(VERSION 3.19)
project(my_project)
set(CMAKE_CXX_STANDARD 14)
add_executable(my_project main.cpp )
# Append the cmake/ directory to the CMAKE_MODULE_PATH
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
find_package(GSL REQUIRED)
message(STATUS "GSL Found: ${GSL_FOUND}")
target_link_libraries(my_project GSL::gsl GSL::gslcblas)
find_package(Boost REQUIRED)
message(STATUS "Boost Found: ${Boost_FOUND}")
target_link_libraries(my_project Boost::boost)
find_package(MPFR REQUIRED)
message(STATUS "MPFR Found: ${MPFR_FOUND}")
target_link_libraries(my_project ${MPFR_LIBRARIES})
And it works fine :)
So I am using clion, trying to build a project with wxwidgets. But I get this error:
CMake Error at C:/Program Files/JetBrains/CLion 2020.1/bin/cmake/win/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:146 (message):
Could NOT find wxWidgets (missing: wxWidgets_LIBRARIES
wxWidgets_INCLUDE_DIRS core)
Here is my cmake file:
cmake_minimum_required(VERSION 3.16)
project(BedrockFinderCpp)
set(wxWidgets_ROOT_DIR <c:/Program Files/wxWidgets-3.1.4>)
set(wxWidgets_CONFIGURATION mswu)
find_package(wxWidgets REQUIRED COMPONENTS core)
include(${wxWidgets_USE_FILE})
find_package(OpenCL REQUIRED)
add_executable(${PROJECT_NAME}
BFFApp.cpp
BFFGui.cpp
PrecomputedRandAdvance.cpp
)
target_include_directories(${PROJECT_NAME} PRIVATE ${OpenCL_INCLUDE_DIRS})
target_link_libraries(${PROJECT_NAME} ${wxWidgets_LIBRARIES} ${OpenCL_LIBRARIES})
I found a "fix" by myself. It can be done with this code:
NOTE: wxWidgets is a subdirectory that contains files from the wxWidgets-3.1.4 directory
cmake_minimum_required(VERSION 3.16)
project(BedrockFinderCpp)
add_subdirectory(wxWidgets)
find_package(OpenCL REQUIRED)
add_executable(${PROJECT_NAME}
BFFApp.cpp
BFFGui.cpp
PrecomputedRandAdvance.cpp
)
target_include_directories(${PROJECT_NAME} PRIVATE ${OpenCL_INCLUDE_DIRS})
target_link_libraries(${PROJECT_NAME} wx::core ${OpenCL_LIBRARIES})
Hello I am trying to use ImageMagick++ in one of my applications. I am trying to build my program from CMakeList. When I try to include Magick++.h in my main program it is showing an error saying that it cannot be found.
I tried to install like it is mentioned in the link.
Link for installation.
CMakeLists.txt
cmake_minimum_required(VERSION 3.6)
project(...)
set(CMAKE_CXX_STANDARD 11)
#set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "/usr/local/lib/pkgconfig")
#set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "/usr/local/lib")
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake)
find_package(libhpdf REQUIRED)
find_package(ImageMagick REQUIRED)
message(STATUS "${CMAKE_MODULE_PATH}")
include_directories(${LIBHPDF_INCLUDE_DIRS} src/include)
include_directories(${ImageMagick_INCLUDE_DIRS})
message(Verification "${ImageMagick_LIBRARIES} ${ImageMagick_INCLUDE_DIRS}")
set(SOURCE_FILES src/main.cpp src/base64.cpp src/base64.h)
add_executable(pdfgen ${SOURCE_FILES})
target_link_libraries(pdfgen ${LIBHPDF_LIBRARIES} ${ImageMagick_LIBRARIES})
Can someone help me to resolve this issue
This is the CMake output
Cmake output
Message for ImageMagickLibraries is null