CODEWITHSUNDEEP
c++ubuntucmakeqt4clion
CobraPi
CobraPi

Reputation: 392

How to set up qt4 with cmake in Ubuntu?

I'm currently trying to set up qt4 to work with cmake in the CLion IDE, however I'm having trouble specifying the install path. I'm running Ubuntu so I downloaded qt4 with sudo apt install qt4-default. Where does this install it to? How do I tell cmake where to find the package configuration files?

This is my CMakeLists.txt file:

cmake_minimum_required(VERSION 3.15)
project(ContactClasses)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set(SOURCE_FILES main.cpp Contact.h Contact.cpp ContactList.h ContactList.cpp ContactFactory.h ContactFactory.cpp)
set(CMAKE_PREFIX_PATH "/usr/share/qt4")

find_package(Qt4Core REQUIRED)

add_executable(Homework_6 ${SOURCE_FILES})

target_link_libraries(ContactClasses Qt4::Core)

I get this error when I try to reload it:

CMake Error at CMakeLists.txt:8 (find_package):
  By not providing "FindQt4Core.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Qt4Core", but
  CMake did not find one.

  Could not find a package configuration file provided by "Qt4Core" with any
  of the following names:

    Qt4CoreConfig.cmake
    qt4core-config.cmake

  Add the installation prefix of "Qt4Core" to CMAKE_PREFIX_PATH or set
  "Qt4Core_DIR" to a directory containing one of the above files.  If
  "Qt4Core" provides a separate development package or SDK, be sure it has
  been installed.

Upvotes: 2

Views: 1342

Answers (1)

vre
vre

Reputation: 6724

There is a specialized FindQt4 module for that in CMake see its documentation.

You call it as follows:

set(CMAKE_AUTOMOC ON)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
find_package(Qt4 REQUIRED QtCore)
add_executable(Homework_6 ${SOURCE_FILES})
target_link_libraries(Homework_6 PUBLIC Qt4::QtCore)

Upvotes: 2

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