CMake + GTK3

CMakeLists.txt

cmake_minimum_required(VERSION 3.13)

project(example-gtk3)

set(CMAKE_CXX_STANDARD 11)

find_package(PkgConfig REQUIRED)
pkg_check_modules(GTK3
    REQUIRED
        gtkmm-3.0>=3.22
        gdkmm-3.0>=3.22
        gtk+-3.0>=3.22
        gdk-3.0>=3.22
        gdl-3.0>=3.4
)

add_library(Gtk3 INTERFACE)

target_compile_options(Gtk3 INTERFACE ${GTK3_CFLAGS_OTHER})
target_link_libraries(Gtk3 INTERFACE ${GTK3_LIBRARIES})
target_include_directories(Gtk3 INTERFACE ${GTK3_INCLUDE_DIRS})

add_executable(example main.cpp)

target_link_libraries(example Gtk3)