#Unable to find a library in CMakeLists.txt even after specifying path.

15 messages · Page 1 of 1 (latest)

zenith zealot
# 
cmake_minimum_required(VERSION 3.16)
project(telemetry_streamer)
set(CMAKE_CXX_STANDARD 20)

set(Crow_DIR "/usr/local/lib/cmake/Crow")
find_package(Crow REQUIRED)

add_executable(telemetry_streamer src/rest/rest_service.cpp src/rest/crow_rest.cpp)
include_directories(include)

find_package(Boost REQUIRED COMPONENTS system thread filesystem)

target_link_libraries(telemetry_streamer PRIVATE Crow::Crow Boost::system Boost::thread Boost::filesystem)

I'm getting the rror

CMake Warning at CMakeLists.txt:9 (find_package):
  By not providing "FindCrow.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Crow", but
  CMake did not find one.

  Could not find a package configuration file provided by "Crow" with any of
  the following names:

    CrowConfig.cmake
    crow-config.cmake

  Add the installation prefix of "Crow" to CMAKE_PREFIX_PATH or set
  "Crow_DIR" to a directory containing one of the above files.  If "Crow"
  provides a separate development package or SDK, be sure it has been
  installed.

but

root@DESKTOP-URJT285:/usr/local/lib/cmake/Crow# ls
CrowConfig.cmake  CrowTargets.cmake  Findasio.cmake

it exists in this directory. so what am I doing wrong?

wanton swallowBOT
#

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magic oak
#

you need to add the directory to the CMAKE_MODULE_PATH for find_package to find your module.

list(APPEND CMAKE_MODULE_PATH "/usr/local/lib/cmake/Crow")
find_package(Crow REQUIRED)
zenith zealot
wanton swallowBOT
#

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sweet hornet
#

you want it to find CrowConfig.cmake in there

#

which means you're doing a CONFIG mode find_package

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which looks in CMAKE_PREFIX_PATH, not CMAKE_MODULE_PATH

zenith zealot
#

i changed my compiler from clang-14 to gcc and it compiled without issues

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i dont know why

#

it solved a whole range of issues for me. for some reason compiling with clang-14 was not generating debug symbols in my program

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but changing to gcc worked

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really weird