Support selecting JavaScriptCore API version

Signed-off-by: Robert Günzler <[email protected]>

Author: robertgzr

cmake/FindJavaScriptCore.cmake

@@ -1,23 +1,53 @@
-if(NOT JavaScriptCore_FOUND)
-  if(APPLE)
-    add_library(javascript_core INTERFACE IMPORTED)
-    target_link_libraries(javascript_core INTERFACE "-framework Foundation")
-    target_link_libraries(javascript_core INTERFACE "-framework JavaScriptCore")
-    add_library(JavaScriptCore::JavaScriptCore ALIAS javascript_core)
-    set(JavaScriptCore_FOUND ON)
-  elseif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
-    add_library(javascript_core INTERFACE IMPORTED)
-    find_package(PkgConfig REQUIRED)
-    pkg_check_modules(JAVASCRIPTCORE REQUIRED javascriptcoregtk-4.0)
-    set_property(TARGET javascript_core PROPERTY
-      INTERFACE_INCLUDE_DIRECTORIES ${JAVASCRIPTCORE_INCLUDE_DIRS})
-    set_property(TARGET javascript_core PROPERTY
-      INTERFACE_COMPILE_OPTIONS ${JAVASCRIPTCORE_CFLAGS})
-    set_property(TARGET javascript_core PROPERTY
-      INTERFACE_LINK_OPTIONS ${JAVASCRIPTCORE_LDFLAGS})
+if(APPLE)
+  add_library(javascript_core INTERFACE IMPORTED)
+  target_link_libraries(javascript_core INTERFACE "-framework Foundation")
+  target_link_libraries(javascript_core INTERFACE "-framework JavaScriptCore")
+  set(JavaScriptCore_FOUND ON)
+elseif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+  add_library(javascript_core INTERFACE IMPORTED)
+  find_package(PkgConfig REQUIRED)
+
+  # If find_package(JavaScriptCore [version]) is called we only look for that
+  # otherwise loop through a list of supported options, pick the first one found
+  # and error out if there is no match
+  if(JavaScriptCore_FIND_VERSION)
+    pkg_check_modules(JAVASCRIPTCORE javascriptcoregtk-${JavaScriptCore_FIND_VERSION} REQUIRED)
+  else()
+    set(supported_versions 6.0 4.1 4.0)
+    foreach(ver ${supported_versions})
+      pkg_check_modules(JAVASCRIPTCORE javascriptcoregtk-${ver})
+      if(JAVASCRIPTCORE_FOUND)
+        set(JavaScriptCore_FIND_VERSION ${ver})
+        break()
+      endif()
+    endforeach()
+    if(NOT JAVASCRIPTCORE_FOUND)
+      message(FATAL_ERROR "Required package JavaScriptCore was not found")
+    endif()
+  endif()
+
+  set_property(TARGET javascript_core PROPERTY
+    INTERFACE_INCLUDE_DIRECTORIES ${JAVASCRIPTCORE_INCLUDE_DIRS})
+  set_property(TARGET javascript_core PROPERTY
+    INTERFACE_COMPILE_OPTIONS ${JAVASCRIPTCORE_CFLAGS})
+  set_property(TARGET javascript_core PROPERTY
+    INTERFACE_LINK_OPTIONS ${JAVASCRIPTCORE_LDFLAGS})
+  set_property(TARGET javascript_core PROPERTY
+    INTERFACE_LINK_LIBRARIES ${JAVASCRIPTCORE_LINK_LIBRARIES})
+
+  if(JavaScriptCore_FIND_VERSION STREQUAL "6.0")
+    # NOTE: this is required since WebkitGTK (which includes JavaScriptCore) only
+    # exposes the GLib headers starting in versions after 4.0
+    # see: https://github.com/WebKit/WebKit/blob/main/Source/WebKit/gtk/migrating-to-webkitgtk-6.0.md#stop-using-deprecated-apis
+    FILE(GLOB headers ${PROJECT_SOURCE_DIR}/vendor/webkitgtk/Source/JavaScriptCore/API/*.h)
+    FOREACH(header ${headers})
+      cmake_path(GET header FILENAME header_filename)
+      configure_file("${header}" "${PROJECT_BINARY_DIR}/javascriptcore-headers/JavaScriptCore/${header_filename}" COPYONLY)
+    ENDFOREACH()
     set_property(TARGET javascript_core PROPERTY
-      INTERFACE_LINK_LIBRARIES ${JAVASCRIPTCORE_LINK_LIBRARIES})
-    add_library(JavaScriptCore::JavaScriptCore ALIAS javascript_core)
-    set(JavaScriptCore_FOUND ON)
+      INTERFACE_INCLUDE_DIRECTORIES "${PROJECT_BINARY_DIR}/javascriptcore-headers")
   endif()
+
+  add_library(JavaScriptCore::JavaScriptCore ALIAS javascript_core)
+  set(JavaScriptCore_FOUND ON)
 endif()