I'm trying to install boost-program-options (not header-only) on Linux with VCPKG. Unfortunately it is not working. I tried to do its on separate environment, because of that I've created docker instance:
$ docker run -it --rm --network=host -v $(pwd):/home/ --workdir /home --name='ubuntu_test' ubuntu:22.04
# apt-get update && apt-get upgrade -y --no-install-recommends
# apt-get install g++ git cmake curl zip unzip tar ca-certificates make --no-install-recommends -y
Then I've downloaded and built vcpkg:
# git clone https://github.com/Microsoft/vcpkg.git --depth=1
# ./vcpkg/bootstrap-vcpkg.sh
The next step was to install boost-program-options with vcpkg, so I used commend:
# ./vcpkg/vcpkg install boost-program-options
after succesfull installation I saw output:
find_package(Boost REQUIRED [COMPONENTS <libs>...])
target_link_libraries(main PRIVATE Boost::boost Boost::<lib1> Boost::<lib2> ...)
Then I tried to get CMake argument by caling:
# ./vcpkg/vcpkg integrate install
Applied user-wide integration for this vcpkg root.
CMake projects should use: "-DCMAKE_TOOLCHAIN_FILE=/home/vcpkg/scripts/buildsystems/vcpkg.cmake"
Then I use simplest CMakeLists.txt (took from official vcpkg tutorial modified as suggested by vcpkg):
cmake_minimum_required(VERSION 3.16)
project(Learning_VCPKG LANGUAGES CXX)
find_package(Boost REQUIRED COMPONENTS program-options)
if (Boost_FOUND)
message("Boost found: ${Boost_INCLUDE_DIRS} and ${Boost_LIBRARY_DIRS}")
include_directories(${Boost_INCLUDE_DIRS})
link_directories(${Boost_LIBRARY_DIRS})
endif ()
add_executable(${PROJECT_NAME} main.cpp)
target_link_libraries(${PROJECT_NAME} ${Boost_LIBRARIES})
When I try to generate project I see 2 warnings and 1 error:
# cmake . -DCMAKE_TOOLCHAIN_FILE=/home/vcpkg/scripts/buildsystems/vcpkg.cmake
-- The CXX compiler identification is GNU 11.3.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Warning at /usr/share/cmake-3.22/Modules/FindBoost.cmake:1369 (message):
New Boost version may have incorrect or missing dependencies and imported
targets
Call Stack (most recent call first):
/usr/share/cmake-3.22/Modules/FindBoost.cmake:1492 (_Boost_COMPONENT_DEPENDENCIES)
/usr/share/cmake-3.22/Modules/FindBoost.cmake:2102 (_Boost_MISSING_DEPENDENCIES)
vcpkg/installed/x64-linux/share/boost/vcpkg-cmake-wrapper.cmake:11 (_find_package)
vcpkg/scripts/buildsystems/vcpkg.cmake:809 (include)
CMakeLists.txt:4 (find_package)
CMake Warning at /usr/share/cmake-3.22/Modules/FindBoost.cmake:2201 (message):
No header defined for program-options; skipping header check (note:
header-only libraries have no designated component)
Call Stack (most recent call first):
vcpkg/installed/x64-linux/share/boost/vcpkg-cmake-wrapper.cmake:11 (_find_package)
vcpkg/scripts/buildsystems/vcpkg.cmake:809 (include)
CMakeLists.txt:4 (find_package)
CMake Error at /usr/share/cmake-3.22/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
Could NOT find Boost (missing: program-options) (found version "1.82.0")
Call Stack (most recent call first):
/usr/share/cmake-3.22/Modules/FindPackageHandleStandardArgs.cmake:594 (_FPHSA_FAILURE_MESSAGE)
/usr/share/cmake-3.22/Modules/FindBoost.cmake:2360 (find_package_handle_standard_args)
vcpkg/installed/x64-linux/share/boost/vcpkg-cmake-wrapper.cmake:11 (_find_package)
vcpkg/scripts/buildsystems/vcpkg.cmake:809 (include)
CMakeLists.txt:4 (find_package)
-- Configuring incomplete, errors occurred!
See also "/home/CMakeFiles/CMakeOutput.log".
Next step which I made was to check if boost was really installed:
./vcpkg/vcpkg list | grep boost-program
boost-program-options:x64-linux 1.82.0#2 Boost program_options module
After that I started to find solution on Internet:
set(Boost_INCLUDE_DIR ${_VCPKG_INSTALLED_DIR}/vcpkg/installed/x64-linux/include/) unfortunately output is the same as above.
I've also tried to add:set(Boost_USE_STATIC_LIBS ON) # only find static libs
set(Boost_USE_DEBUG_LIBS OFF) # ignore debug libs and
set(Boost_USE_RELEASE_LIBS ON) # only find release libs
set(Boost_USE_MULTITHREADED ON)
set(Boost_USE_STATIC_RUNTIME ON) # link Boost Static libraries
But result is still the same.
Here is information about triplet for Windows: Installing boost via vcpkg, I get the wrong toolset - so it is not answer.
Unable to find Boost libraries with CMake and vcpkg - there were important information, if I change:
find_package(Boost COMPONENTS program-options REQUIRED) -> find_package(Boost REQUIRED) it is generating configuration, but unfortunately not linking program (in the question it is boost-variant, which is header-only, but I'm using not header-only)
I can then do its "manually" by changing:
target_link_libraries(${PROJECT_NAME} ${Boost_LIBRARIES}) -> target_link_libraries(${PROJECT_NAME} -L${Boost_LIBRARY_DIRS} -lboost_program_options)
then program compile & links, but it is dirty hack.
So final, working CMakeLists.txt is:
cmake_minimum_required(VERSION 3.16)
project(Learning_VCPKG LANGUAGES CXX)
find_package(Boost REQUIRED)
if (Boost_FOUND)
message("Boost found: ${Boost_INCLUDE_DIRS} and ${Boost_LIBRARY_DIRS}")
include_directories(${Boost_INCLUDE_DIRS})
link_directories(${Boost_LIBRARY_DIRS})
endif ()
add_executable(${PROJECT_NAME} main.cpp)
target_link_libraries(${PROJECT_NAME} -lboost_program_options)
But I'm sure that there is more proffesional way of adding boost not header-only sublibrary to project with vcpkg on Linux. Especially because boost is one of most popular C++ libraries.
To get rid of the warnings:
set Boost_NO_WARN_NEW_VERSIONS (if you use at least cmake 3.20) to true
To use Boost::program_options:
find_package(Boost COMPONENTS program_options REQUIRED)
target_link_libraries(<your_target> PRIVATE Boost::program_options)
So what did you do wrong?
Very simple, you misspelled it: program_options != program-options