I am using CMake and trying to include libraries I use with the executable for distribution. One library I am using is boost for which I am using the statement
find_package(Boost REQUIRED thread filesystem)
This works fine, but I cannot redistribute to a computer where boost is not installed.
I then tried to use fetch_content but when cpack generates the installer, the library files built still aren't included.
set(BOOST_INCLUDE_LIBRARIES thread filesystem)
set(BOOST_ENABLE_CMAKE ON)
FetchContent_Declare(build_boost GIT_REPOSITORY https://github.com/boostorg/boost.git GIT_TAG boost-1.80.0)
FetchContent_GetProperties(build_boost)
if(NOT build_boost_POPULATED)
FetchContent_Populate(build_boost)
add_subdirectory(${build_boost_SOURCE_DIR} ${build_boost_BINARY_DIR} EXCLUDE_FROM_ALL)
endif()
How can I package the library files with the executable?
Related
I am cross-compiling a JNI DLL on Windows using MSVC + CMake and I noticed that it is producing a .lib file on install. I am using add_library(mylibname SHARED ...) and install(TARGETS mylibname DESTINATION ${CMAKE_INSTALL_LIBDIR}) to create and install the shared library. Is there a way to prevent this file from being installed as it is not needed for JNI libraries at runtime?
I am using cmake (v3.17.3) to build a starter project that uses some boost (1.73) packages. The boost packages are managed with vcpkg (20.02.04-nohash). To date I have had success. Boost packages and statements like
find_package(Boost COMPONENTS filesystem system unit_test_framework REQUIRED)
result in successful builds. However, when I add boost:python, i.e.
find_package(Boost COMPONENTS filesystem system unit_test_framework python REQUIRED)
I receive the following error from cmake:
[cmake] CMake Error at E:/Program Files/CMake/share/cmake-3.17/Modules/FindPackageHandleStandardArgs.cmake:164 (message):
[cmake] Could NOT find Boost (missing: python) (found version "1.73.0")
I can confirm that boost-python:x64-windows package is installed on my machine - in the same way that the other, working boost packages were installed (vcpkg install boost-pkg:x64-windows).
Other information that may be relevant. Windows 10, VSCode 1.46.0.
I'm pretty new to cmake and vcpkg but would really like to get this to work in VSCode so that I can port the project to a different OS.
I have installed the libboost-all-dev packaged on Ubuntu.
Cmake 3.10.2 can find boost but not "boost_core".
When I change the find package line to:
find_package(Boost REQUIRED COMPONENTS core)
Then it complains that it can't find "boost_core".
I actually just need boost/iterator...
How to make cmake find that?
Thanks.
CMakeLists.txt:
cmake_minimum_required(VERSION 3.10)
project(test_boost_iterator)
set(CMAKE_CXX_STANDARD 11)
find_package(Boost REQUIRED)
include_directories(${Boost_INCLUDE_DIR})
add_definitions( "-DHAS_BOOST" )
add_executable(test_boost_iterator main.cpp)
Success message (before replacing the find_package line):
-- Boost version: 1.65.1
-- Configuring done
-- Generating done
Error message (after replacing the find_package line)
Unable to find the requested Boost libraries.
Boost version: 1.65.1
Boost include path: /usr/include
Could not find the following Boost libraries:
boost_core
No Boost libraries were found. You may need to set BOOST_LIBRARYDIR to the
directory containing Boost libraries or BOOST_ROOT to the location of
Boost.
Call Stack (most recent call first):
CMakeLists.txt:6 (find_package)
As I know there is no such a boost library core. You can check if a library should be linked here.
And Boost.Iterator is a header-only library, so you don't need to link anything. Just include <boost/iterator/...>. If you can't include, check whether these includes actually exist in your local boost distro.
I checked it for boost::counting_iterator<int> and all works well for me.
To reproduce my issue... I download Boost, then I run booststrap and b2 --build-dir=C:\Users\xxx\Downloads\my_boost_build_dir --prefix=C:\Users\xxx\Downloads\my_boost_install_dir --layout=system variant=release link=static install. Everything seems so far so good. The provided prefix (install) dir is populated with headers and libs.
But here's where things start going wrong. If I write the following cmake file...
find_package(Boost REQUIRED)
message("Boost_FOUND" ${Boost_FOUND})
message("Boost_INCLUDE_DIRS" ${Boost_INCLUDE_DIRS})
message("Boost_LIBRARY_DIRS" ${Boost_LIBRARY_DIRS})
message("Boost_LIBRARIES" ${Boost_LIBRARIES})
message("Boost_CHRONO_FOUND" ${Boost_CHRONO_FOUND})
message("Boost_CHRONO_LIBRARY" ${Boost_CHRONO_LIBRARY})
add_executable(main main.cpp)
target_link_libraries(main PRIVATE Boost::boost Boost::chrono)
...and I configure it with the path to the boost install dir cmake .. -DCMAKE_PREFIX_PATH=C:\Users\xxx\Downloads\my_boost_install_dir, then I get the following output and error...
Boost_FOUND1
Boost_INCLUDE_DIRSC:/Users/xxx/Downloads/my_boost_install_dir/include
Boost_LIBRARY_DIRSC:/Users/xxx/Downloads/my_boost_install_dir/lib
Boost_LIBRARIES
Boost_CHRONO_FOUND
Boost_CHRONO_LIBRARY
-- Configuring done
CMake Error at CMakeLists.txt:14 (add_executable):
Target "main" links to target "Boost::chrono" but the target was not found.
Perhaps a find_package() call is missing for an IMPORTED target, or an
ALIAS target is missing?
Boost is found, the include and lib dirs are found, but the chrono library (and all other libraries) are not. Maybe I need to explicitly name my components? So I tried this cmake instead...
find_package(Boost REQUIRED COMPONENTS chrono)
message("Boost_FOUND" ${Boost_FOUND})
message("Boost_INCLUDE_DIRS" ${Boost_INCLUDE_DIRS})
message("Boost_LIBRARY_DIRS" ${Boost_LIBRARY_DIRS})
message("Boost_LIBRARIES" ${Boost_LIBRARIES})
message("Boost_CHRONO_FOUND" ${Boost_CHRONO_FOUND})
message("Boost_CHRONO_LIBRARY" ${Boost_CHRONO_LIBRARY})
add_executable(main main.cpp)
target_link_libraries(main PRIVATE Boost::boost Boost::chrono)
But this produces the following output and error.
CMake Error at C:/Program Files/CMake/share/cmake-3.9/Modules/FindBoost.cmake:1877 (message):
Unable to find the requested Boost libraries.
Boost version: 1.64.0
Boost include path: C:/Users/xxx/Downloads/my_boost_install_dir/include
Could not find the following Boost libraries:
boost_chrono
Some (but not all) of the required Boost libraries were found. You may
need to install these additional Boost libraries. Alternatively, set
BOOST_LIBRARYDIR to the directory containing Boost libraries or BOOST_ROOT
to the location of Boost.
Call Stack (most recent call first):
CMakeLists.txt:5 (find_package)
Boost_FOUND0
Boost_INCLUDE_DIRSC:/Users/xxx/Downloads/my_boost_install_dir/include
Boost_LIBRARY_DIRS
Boost_LIBRARIES
Boost_CHRONO_FOUND
Boost_CHRONO_LIBRARY
Like before, it found boost and the headers, but for some reason it can't find the libraries.
If you want to use specific (non-header-only) Boost components, you have to specify them in find_package. In your case:
find_package(Boost COMPONENTS chrono REQUIRED)
According to https://cmake.org/cmake/help/v3.0/module/FindBoost.html
find_package(Boost) follow the hints below to find boost directories:
BOOST_ROOT - Preferred installation prefix (or BOOSTROOT)
BOOST_INCLUDEDIR - Preferred include directory e.g.
/include
BOOST_LIBRARYDIR - Preferred library directory e.g. /lib
Boost_NO_SYSTEM_PATHS - Set to ON to disable searching in locations
not
specified by these hint variables. Default is OFF.
Boost_ADDITIONAL_VERSIONS
- List of Boost versions not known to this module
(Boost install locations may contain the version)
If you don't know where is the default location to put your boost libraries and include files, you should set these variables before find_package.
The root directory of boost ($ENV{BOOST_ROOT}) is
C:\Boost\boost_1_64_0
All compiled libraries (.dll, .lib) are in
C:\Boost\boost_1_64_0\lib64-msvc-14.1
They have both boost_xxx and libboost_xxx.
My cmake file is
set(BOOST_ROOT "$ENV{BOOST_ROOT}")
set(BOOST_LIBRARYDIR "$ENV{BOOST_ROOT}/lib64-msvc-14.1")
message("${BOOST_ROOT}")
message("${BOOST_LIBRARYDIR}")
message("${Boost_INCLUDE_DIR}")
if(MSVC)
add_definitions(-DBOOST_ALL_NO_LIB)
add_definitions(-DBOOST_ALL_DYN_LINK)
endif()
find_package(Boost 1.64.0 COMPONENTS system filesystem program_options REQUIRED)
And the output is
C:\Boost\boost_1_64_0
C:\Boost\boost_1_64_0/lib64-msvc-14.1
C:/Boost/boost_1_64_0
CMake Error at C:/Program
Files/CMake/share/cmake-3.8/Modules/FindBoost.cmake:1842 (message):
Unable to find the requested Boost libraries.
Boost version: 1.64.0
Boost include path: C:/Boost/boost_1_64_0
Could not find the following Boost libraries:
boost_system
boost_filesystem
boost_program_options
No Boost libraries were found. You may need to set BOOST_LIBRARYDIR
to the directory containing Boost libraries or BOOST_ROOT to the
location of Boost. Call Stack (most recent call first):
CMakeLists.txt:78 (find_package)
CMake Error at CMakeLists.txt:84 (message): Boost not found
Could someone help please? I have spent hours on this but couldn't figure out why this doesn't work.
First of all, what CMake version do you use? Recently a regression fix was included into 3.8.1 release -- it was about backslashes in BOOST_ROOT.
Secondly, you don't need to specify anything else ('cept maybe the BOOST_ROOT) if you are using official prebuilt Windows binaries -- FindBoost.cmake would try to find them as well. (Unfortunately I can't recall since what version.)
Never do set(BOOST_ROOT...) in your CMakeLists.txt -- just pass this parameter to cmake run via -D option. A better way is the following:
if(NOT DEFINED BOOST_ROOT AND NOT "${ENV{BOOST_ROOT}" STREQUAL "")
set(BOOST_ROOT "$ENV{BOOST_ROOT}")
endif()
Use imported targets to link w/ needed Boost libraries and to modify compile/linker flags per taget. Please avoid to modify "global" compiler/linker options -- i.e. use corresponding target_xxx commands instead of add_definitions & etc.
I use the following script to load boost with CMake (working with Linux and Windows) :
set(BoostPath "${DefaultBoostPath}" CACHE PATH "Path to Boost")
message(STATUS "Path to Boost: ${BoostPath}")
set(BOOST_ROOT "${BoostPath}")
set(Boost_USE_MULTITHREAD ON)
set(Boost_USE_STATIC_LIBS ON)
set(Boost_NO_SYSTEM_PATHS ON)
set(Boost_ADDITIONAL_VERSIONS "1.57.0" "1.57" "1.58.0" "1.58" "1.59.0" "1.59" "1.60.0" "1.60" "1.61.0" "1.61" "1.62.0" "1.62" "1.63.0" "1.63" "1.64.0" "1.64")
find_package(Boost ${RequiredBoostVersion} REQUIRED COMPONENTS ${RequiredBoostComponents})
mark_as_advanced(FORCE Boost_DIR)
set(BoostVersion "${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}")
message(STATUS "Boost version: ${BoostVersion}")
if(CompilerName STREQUAL "gcc")
set(System_LIBRARIES ${System_LIBRARIES} pthread rt)
endif()
You can see I have to add some versions of Boost because my version of CMake doesn't know last versions.
What's your CMake version ? Maybe it's the same problem.
Where are your headers? I don't think it found the include directory (which is necessary for this to be successful).
Search for FindBoost.cmake in your cmake installation directory, there are lots of useful things in there for troubleshooting.
using set(Boost_DEBUG ON) can help you figure out which paths are searched and what the filenames of the libraries are searched. You can specify the include directory (directory where folder boost is stored) with set(Boost_INCLUDEDIRS ${BOOST_ROOT}/inc), though what I just showed is one of the places that FindBoost.cmake searches.
Also, you don't need set(BOOST_ROOT "$ENV{BOOST_ROOT}"). FindBoost.cmake does that for you if you don't set ${BOOST_ROOT}.
Note that if you just downloaded boost, extracted the archive to ${BOOST_ROOT} and compiled with b2, then all of your files are in ${BOOST_ROOT}/stage. This is also a good place for them to reside. If you manually copy files somewhere else, then FindBoost may have some troubles finding them.