I searched everywhere but most of the answers are relevant to Linux, not many use CLion on Windows.
So I extracted boost_1_60_0 into C:\ and now my path for the boost root folder is
C:\boost_1_60_0
I got the CMakeLists.txt file where I'm trying to set the root directory of boost and include it, but it doesn't recognize it:
set(Boost_Path "C:/boost_1_60_0")
find_package(Boost 1.60.0)
if(Boost_FOUND)
message(STATUS "It works!")
endif()
What am I doing wrong?
Related
When i try to run cmake to build a project where i include the SFML library i get the following Error: SFML found but version too low (requested: 2.4, found: 1.x.x)
I downloaded only the source of the newest Version of the library (SFML-2.4.2). I than run cmake (with MinGW Makefiles) And build the binaries into the same folder.
I copied the FindSFML into an subfolder of my project.
After that i had the following folder structure
SFML-2.4.2\
cmake\
Modules\
FindSFML.cmake
CMakeFiles
doc
...
include
lib
src
..
sfml-games\
tetris\
cmake_modules\
FindSFML.cmake
CMakeLists.txt
main.cpp
tetris-build
...
My CMakeLists.txt contains the following stuff:
project(Tetris)
cmake_minimum_required(VERSION 2.8)
aux_source_directory(. SRC_LIST)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake_modules")
Find_package(SFML 2 REQUIRED system window graphics network audio)
include_directories(${SFML_INCLUDE_DIR})
add_executable(${PROJECT_NAME} ${SRC_LIST})
target_link_libraries(${PROJECT_NAME} ${SFML_LIBRARY})
I found that in cmake the entry CMAKE_INSTALL_PREFIX (which i dont get) is set to C:\Program Files (x86)\SFML so i put the library and the lib of SFML into C:\Program Files (x86)\SFML. (what is that CMAKE_INSTALL_PREFIX and should i realy always copy the library and lib folders into my C:\Program Files (x86)\ ??). Now my cmake runs through but when i try to compile the code i get a lot of undifined references to '_imp__....'
By the way on linux i just installed SFML via sudo apt-get install libsfml-dev and it works out of the box.
You're confusing things. CMAKE_INSTALL_PREFIX is the default location where to put SFML when you build the install target (i.e. running make install). This has nothing to do with your other issues.
You don't have to install SFML (or any other library) somewhere under C:\Program Files. That's completely up to you.
What I found to be rather neat is installing MinGW to C:\usr (or creating a symlink to your installation folder) and also use that path for CMAKE_INSTALL_PREFIX when building SFML.
This way MinGW should behave pretty much the way you're used to from Linux (i.e. not having to specify paths for include dir or libraries etc.).
As for your undefined reference errors, you should create a new question only asking for these (and then include at least a few of them), as they have nothing to do with the installation directory.
Right now I can only guess, but it's most likely due to you using the wrong CMake variables for the linker. You won't notice this on Linux, since SFML will be in the default search path (which will also happen if you use C:\usr as described above).
To try fixing this, use this line:
target_link_libraries(${PROJECT_NAME} ${SFML_LIBRARIES} ${SFML_DEPENDENCIES})
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 ${BOOST_ROOT}/stage. This is also a good place for them to reside. If you manually copy files somewhere else, then FindBoost may have some troubles finding them.
I created a XCode project with CMake including the Boost 1.55 library and I got into a problem I can't solve by myself.
The include
#include "boost/filesystem.hpp"
just works in EIATHelper.cxx, but not in header EIATHelper.h. In the header it says "file not found" and consequently the build fails. But still the include seems to work, because Xcode doesn't bitch about the used objects defined in "the missing" filesystem.hpp.
Important! When I put the include and all my code into the .cxx files everything works (build/execute).
I added a screenshot who may helps to understand the problem better. (of course I didn't use the double #include):
The project is completely created with CMake.
CMakeLists.txt from subfolder header:
project(${PROJECT_NAME})
add_library(helper
${PROJECT_NAME}Helper.h
${PROJECT_NAME}Helper.cxx
)
set(BOOST_ROOT /Users/name/Libs/Boost/bin)
set(Boost_USE_STATIC_LIBS ON)
set(Boost_USE_MULTITHREADED OFF)
set(Boost_USE_STATIC_RUNTIME OFF)
set(Boost_DEBUG ON)
set(BOOST_INCLUDEDIR /Users/name/Libs/Boost/bin/include)
set(BOOST_LIBRARYDIR /Users/name/Libs/Boost/bin/lib)
find_package(Boost COMPONENTS
system
filesystem
log
log_setup
)
include_directories(${Boost_INCLUDE_DIRS})
if(NOT Boost_FOUND)
message("Boost was NOT found")
endif()
target_link_libraries(helper ${BOOST_LIBRARIES})
Edit: I created a Eclipse CDT4 Project with CMake, same problem here. Header filsystem.hpp not found in the EIATHelper.h. So I guess something has to be wrong with my project settings, regardless of the IDE.
just works in EIATHelper.cxx, but not in header EIATHelper.h
No, it's not. EIATHelper.cxx includes EIATHelper.h, so "header not found" error appears
first in EIATHelper.h and is kind of a fatal error - compilation stops without processing EIATHelper.cxx (hence without reporting any errors in EIATHelper.cxx).
I'm pretty sure that error is in finding boost libraries. Some notes:
BOOST_INCLUDEDIR and BOOST_LIBRARYDIR is a hints. If you set BOOST_ROOT and libraries is in a standard paths (lib and include) you don't need them.
Boost is mandatory for EIATHelper.{h,cxx} it's better to use REQUIRED suboption
(you don't need to check Boost_FOUND):
find_package(Boost REQUIRED system filesystem log log_setup)
CMake variables is case-sensitive, use Boost_LIBRARIES instead of BOOST_LIBRARIES
Do not hardcode BOOST_ROOT variable, it's not user friendly. At least do something like that:
if(NOT BOOST_ROOT)
set(BOOST_ROOT /some/default/path/to/boost)
endif()
This question is very similar to Why is this boost header file not included, however the hints there don't (seem to) solve my problem.
I got a CMakeLists.txt
CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
PROJECT(jetorigin)
SET(Boost_ADDITIONAL_VERSIONS "1.43" "1.43.0" "1.44" "1.44.0" "1.45" "1.45.0")
SET(BOOST_ROOT "$ENV{HOME}/usr")
MESSAGE(STATUS "** Search Boost root: ${BOOST_ROOT}")
FIND_PACKAGE(Boost 1.43 COMPONENTS filesystem regex REQUIRED)
MESSAGE(STATUS "** Boost Include: ${Boost_INCLUDE_DIR}")
MESSAGE(STATUS "** Boost Libraries: ${Boost_LIBRARY_DIRS}")
MESSAGE(STATUS "** Boost Libraries: ${Boost_LIBRARIES}")
INCLUDE_DIRECTORIES(${BOOST_INCLUDE_DIR})
LINK_DIRECTORIES(${Boost_LIBRARY_DIRS})
ADD_SUBDIRECTORY(src)
And include some boost headers in my code like this:
#include <boost/regex.hpp>
#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
Now the output from cmake looks ok
-- ** Search Boost root: /home/oli/usr
-- Boost version: 1.43.0
-- Found the following Boost libraries:
-- filesystem
-- regex
-- ** Boost Include: /home/oli/usr/include
-- ** Boost Libraries: /home/oli/usr/lib
-- ** Boost Libraries: /home/oli/usr/lib/libboost_filesystem.so;/home/oli/usr/lib/libboost_regex.so
But I get this error:
error: boost/regex.hpp: No such file or directory
(and similar for the other includes). Full output from make VERBOSE=1 can be found here http://pastebin.ca/2039425. It looks as though there is no -I flag added even though Boost_INCLUDE_DIR seems to be set correctly.
I'm using CMake 2.8.1 by the way.
I would very much appreciate any hints on what is going wrong here..
EDIT:
I've found the problem. Seems I pulled some ancient version of my standard CMakeLists.txt from the depths of my archives. It needs to be:
INCLUDE_DIRECTORIES(${Boost_INCLUDE_DIR})
(note the non-capitalized "Boost")...
Maybe older versions of CMake have been more tolerant in this respect or by bad luck I simply chose to start with a version of my CMakeLists.txt with an unfixed bug..
Since you did not specify a mode for find_package, it attempts to first use MODULE mode, and then CONFIG mode. As per the docs for the FindBoost module, the cache variable storing the directory containing Boost headers is named Boost_INCLUDE_DIR and not BOOST_INCLUDE_DIR. As per the CMake language docs' section on variables, CMake variable names are case-sensitive. I don't know why you had another CMakeLists.txt file with BOOST_INCLUDE_DIR working.