[libffi] Add pkgconfig file (#12126)

* [libffi] Add pkgconfig file

- Configure and add the libffi.pc file.
- Furthermore, enable the check for same 32/64bit-ness in
  libffiConfigVersion.cmake again, which had caused issues in the past
  with newer versions of glib using meson build, e.g. when building for
  x86-windows target on an x64-windows host.
  Now, libffi is found by current glib (e.g. 2.64.3) during
  meson build using the libffi pkgconfig file.

* Check VCPKG_BUILD_TYPE to handle release/debug

ports/libffi/CMakeLists.txt

@@ -186,8 +186,6 @@ include(CMakePackageConfigHelpers)
 configure_package_config_file(${PROJECT_NAME}Config.cmake.in
      "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
      INSTALL_DESTINATION share/${PROJECT_NAME})
-# Disable check for same 32/64bit-ness in libffiConfigVersion.cmake by setting CMAKE_SIZEOF_VOID_P
-set (CMAKE_SIZEOF_VOID_P "")
 write_basic_package_version_file(
     ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
     VERSION ${VERSION}

ports/libffi/CONTROL

@@ -1,4 +1,4 @@
 Source: libffi
-Version: 3.3-2
+Version: 3.3-3
 Homepage: https://github.com/libffi/libffi
-Description: Portable, high level programming interface to various calling conventions
+Description: Portable, high level programming interface to various calling conventions

ports/libffi/portfile.cmake

@@ -1,3 +1,5 @@
+set(VERSION 3.3)
+
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO libffi/libffi
@@ -19,8 +21,30 @@ vcpkg_configure_cmake(
 )
 
 vcpkg_install_cmake()
+
+# Create pkgconfig file
+set(PACKAGE_VERSION ${VERSION})
+set(prefix "${CURRENT_INSTALLED_DIR}")
+set(exec_prefix "\${prefix}")
+set(libdir "\${prefix}/lib")
+set(toolexeclibdir "\${libdir}")
+set(includedir "\${prefix}/include")
+if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "release")
+    configure_file("${SOURCE_PATH}/libffi.pc.in" "${CURRENT_PACKAGES_DIR}/lib/pkgconfig/libffi.pc" @ONLY)
+endif()
+# debug
+set(prefix "${CURRENT_INSTALLED_DIR}/debug")
+set(exec_prefix "\${prefix}")
+set(libdir "\${prefix}/lib")
+set(toolexeclibdir "\${libdir}")
+set(includedir "\${prefix}/../include")
+if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "debug")
+    configure_file("${SOURCE_PATH}/libffi.pc.in" "${CURRENT_PACKAGES_DIR}/debug/lib/pkgconfig/libffi.pc" @ONLY)
+endif()
+
 vcpkg_copy_pdbs()
 vcpkg_fixup_cmake_targets()
+vcpkg_fixup_pkgconfig()
 
 if (VCPKG_LIBRARY_LINKAGE STREQUAL static)
     vcpkg_replace_string(${CURRENT_PACKAGES_DIR}/include/ffi.h
@@ -32,4 +56,4 @@ if (VCPKG_LIBRARY_LINKAGE STREQUAL static)
     )
 endif()
 
-file(INSTALL ${SOURCE_PATH}/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT} RENAME copyright)
+file(INSTALL ${SOURCE_PATH}/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/${PORT} RENAME copyright)