[paho-mqttpp3] Failed to find paho-mqtt

[m4rcs]

When trying to use the pahp-mqttpp3 library on Ubuntu 18.04, I'm getting the following error after running cmake -DCMAKE_TOOLCHAIN_FILE=/home/marc/Documents/vcpkg/scripts/buildsystems/vcpkg.cmake ..:

-- The C compiler identification is GNU 7.4.0
-- The CXX compiler identification is GNU 7.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at /usr/share/cmake-3.10/Modules/FindPackageHandleStandardArgs.cmake:137 (message):
  Could NOT find PahoMqttC (missing: PAHO_MQTT_C_LIBRARIES
  PAHO_MQTT_C_INCLUDE_DIRS)
Call Stack (most recent call first):
  /usr/share/cmake-3.10/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE)
  /home/marc/Documents/vcpkg/installed/x64-linux/share/pahomqttcpp/FindPahoMqttC.cmake:22 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  /home/marc/Documents/vcpkg/scripts/buildsystems/vcpkg.cmake:263 (_find_package)
  /usr/share/cmake-3.10/Modules/CMakeFindDependencyMacro.cmake:48 (find_package)
  /home/marc/Documents/vcpkg/installed/x64-linux/share/pahomqttcpp/PahoMqttCppConfig.cmake:3 (find_dependency)
  /home/marc/Documents/vcpkg/scripts/buildsystems/vcpkg.cmake:263 (_find_package)
  CMakeLists.txt:5 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/marc/Documents/test/build/CMakeFiles/CMakeOutput.log".

The installation of the paho-mqttpp3 package finished successfully.

The CMakeLists.txt looks as following:

cmake_minimum_required(VERSION 3.10)

add_executable(main main.cpp)

find_package(PahoMqttCpp CONFIG REQUIRED)
target_link_libraries(main PRIVATE PahoMqttC::PahoMqttC PahoMqttCpp::paho-mqttpp3-static)

[vpaladino778]

Did you do the ./vcpkg integrate install command after installing paho-mqttpp3?

[m4rcs]

Jep, I did. I also reproduced the error in a VM running a fresh Ubuntu installation.

[JackBoosY]

Hi @m4rcs, thanks for reporting this issue.
I've fixed it, please update vcpkg and rebuild paho-mqttpp3.

Thanks.