2

While following this link to setup boost for json parsing, I am unable to find the boost json component.

Link: Using boost::json static library with cmake

Here's my CMakeLists.txt:

cmake_minimum_required(VERSION 3.9) set (CMAKE_CXX_STANDARD 14) set( Boost_USE_STATIC_LIBS ON ) #set( Boost_USE_MULTITHREADED ON ) #set( Boost_USE_STATIC_RUNTIME OFF ) find_package( Boost REQUIRED COMPONENTS json ) if ( Boost_FOUND ) include_directories( ${Boost_INCLUDE_DIRS} ) else() message( FATAL_ERROR "Required Boost packages not found. Perhaps add -DBOOST_ROOT?" ) endif() add_executable (test main.cc) target_include_directories(test PUBLIC ${Boost_INCLUDE_DIRS}) target_link_libraries(test PUBLIC Boost::boost Boost::json)

Error:

CMake Error at /usr/lib/x86_64-linux-gnu/cmake/Boost-1.71.0/BoostConfig.cmake:117 (find_package): Could not find a package configuration file provided by "boost_json" (requested version 1.71.0) with any of the following names: boost_jsonConfig.cmake boost_json-config.cmake Add the installation prefix of "boost_json" to CMAKE_PREFIX_PATH or set "boost_json_DIR" to a directory containing one of the above files. If "boost_json" provides a separate development package or SDK, be sure it has been installed. Call Stack (most recent call first): /usr/lib/x86_64-linux-gnu/cmake/Boost-1.71.0/BoostConfig.cmake:182 (boost_find_component) /usr/share/cmake-3.16/Modules/FindBoost.cmake:443 (find_package) CMakeLists.txt:11 (find_package) -- Configuring incomplete, errors occurred

How do I resolve this error? I did go through some of the posts describing similar issues with boost but nothing worked.

Improve this question

1 Answer 1

Reset to default
5

Boost JSON was introduced in version 1.75.0. It's not available in version 1.71.0. You need to install a more recent version of boost on your system.

From the boost version history page (emphasis mine):

Version 1.75.0
December 11th, 2020 19:50 GMT

New Libraries: JSON, LEAF, PFR. Updated Libraries: Asio, Atomic, Beast, Container, Endian, Filesystem, GIL, Histogram, Interprocess, Intrusive, Log, Move, Mp11, Optional, Outcome, Polygon, Preprocessor, Rational, Signal2, System, uBLAS, VMD, Wave.

Improve this answer
Sign up to request clarification or add additional context in comments.

5 Comments

Yes, I compiled boost 1.75 and installed. Still having this issue : Scanning dependencies of target test [ 75%] Building CXX object CMakeFiles/test.dir/main.cc.o make[2]: *** No rule to make target '/usr/lib/libboost_json.a', needed by 'test'. Stop. make[1]: *** [CMakeFiles/Makefile2:96: CMakeFiles/test.dir/all] Error 2 make: *** [Makefile:84: all] Error 2 Accepting answer, but this is not resolved yet. Is it a problem with my cmake ?
Another step I had to was to delete all boost-1.71 cmake available under the path /usr/lib/x86_64-linux-gnu/cmake -- If not done, cmake keeps looking for previous version of cmake i.e 1.71 in my case.
I was able to resolve the problem by reinstalling boost 1.75 without giving any prefix -- chose to install all libraries, remove all cmake files from /usr/lib/cmake and /usr/lib/x86_64-linux-gnu/cmake path. Consider this resolved. This thread can be closed now.
@VineetDwivedi You should be able to specify the path to look for boost via Boost_ROOT variable as mentioned in the "config mode search procedure" section of the find_package doc (look for <PackageName>_ROOT)
Don't do that, don't delete system files, you need to pass the option -DBoost_NO_SYSTEM_PATHS=ON to hint CMake not to look in system directories. cmake.org/cmake/help/latest/module/FindBoost.html#hints

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.