Link (hopefully) libxcb and toml11

.gitignore

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+.cache
+build

CMake/FindXCB.cmake

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+# - FindXCB
+#
+# Copyright (C) 2015 Valve Corporation
+
+find_package(PkgConfig)
+
+if(NOT XCB_FIND_COMPONENTS)
+    set(XCB_FIND_COMPONENTS XCB)
+endif()
+
+include(FindPackageHandleStandardArgs)
+set(XCB_FOUND true)
+set(XCB_INCLUDE_DIRS "")
+set(XCB_LIBRARIES "")
+foreach(comp ${XCB_FIND_COMPONENTS})
+    # component name
+    string(TOUPPER ${comp} compname)
+    string(REPLACE "-" "_" compname ${compname})
+    # header name
+    string(REPLACE "xcb-" "" headername xcb/${comp}.h)
+    # library name
+    set(libname ${comp})
+
+    pkg_check_modules(PC_${comp} QUIET ${comp})
+
+    find_path(${compname}_INCLUDE_DIR NAMES ${headername}
+        HINTS
+        ${PC_${comp}_INCLUDEDIR}
+        ${PC_${comp}_INCLUDE_DIRS}
+        )
+
+    find_library(${compname}_LIBRARY NAMES ${libname}
+        HINTS
+        ${PC_${comp}_LIBDIR}
+        ${PC_${comp}_LIBRARY_DIRS}
+        )
+
+    find_package_handle_standard_args(${comp}
+        FOUND_VAR ${comp}_FOUND
+        REQUIRED_VARS ${compname}_INCLUDE_DIR ${compname}_LIBRARY)
+    mark_as_advanced(${compname}_INCLUDE_DIR ${compname}_LIBRARY)
+
+    list(APPEND XCB_INCLUDE_DIRS ${${compname}_INCLUDE_DIR})
+    list(APPEND XCB_LIBRARIES ${${compname}_LIBRARY})
+
+    if(NOT ${comp}_FOUND)
+        set(XCB_FOUND false)
+    endif()
+endforeach()
+
+list(REMOVE_DUPLICATES XCB_INCLUDE_DIRS)

CMakeLists.txt

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+cmake_minimum_required (VERSION 3.6)
+project(swm_project DESCRIPTION "swm (swim) is a simple dynamic window manager.")
+
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/CMake")
+
+add_executable(swm src/main.cpp)
+
+find_package(XCB REQUIRED)
+find_package(toml11 REQUIRED)
+
+# Link headers and source files.
+file(GLOB_RECURSE source_list src/*.cpp)
+target_sources(swm PRIVATE ${source_list})
+target_include_directories(swm PUBLIC include)
+
+# Link depends
+target_link_libraries(swm PUBLIC ${XCB_LIBRARIES})
+target_link_libraries(swm PUBLIC toml11::toml11)
+
+# Set standard to C++20
+set_target_properties(swm PROPERTIES CXX_STANDARD 20 CXX_EXTENSIONS OFF)

src/main.cpp

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+#include <iostream>
+
+int main() {
+    std::cout << "hello world" << std::endl;
+    return 0;
+}