cmake: add pkg-config files

CMakeLists.txt

@@ -1,9 +1,15 @@
 cmake_minimum_required(VERSION 3.19)
+
+set(HYPRLANG_VERSION "0.1")
+set(PREFIX ${CMAKE_INSTALL_PREFIX})
+
 project(hyprlang
-    VERSION "0.1"
+    VERSION ${HYPRLANG_VERSION}
     DESCRIPTION "A library to parse hypr config files"
 )
 
+configure_file(hyprlang.pc.in hyprlang.pc @ONLY)
+
 include(CTest)
 
 set(CMAKE_CXX_STANDARD 23)
@@ -27,3 +33,4 @@ add_test(NAME "Parsing" WORKING_DIRECTORY "../tests/" COMMAND hyprlang_test "par
 install(TARGETS hyprlang
         PUBLIC_HEADER DESTINATION include
         LIBRARY DESTINATION lib)
+install(FILES build/hyprlang.pc DESTINATION ${CMAKE_INSTALL_PREFIX}/share/pkgconfig)

hyprlang.pc.in

@@ -0,0 +1,9 @@
+prefix="@PREFIX@"
+includedir="${prefix}/include"
+
+Name: hyprlang
+URL: https://github.com/hyprwm/hyprlang
+Description: The official implementation library for the hypr config language.
+Version: @HYPRLANG_VERSION@
+Cflags: -I"${prefix}/include"
+libs: -lhyprlang