[shaderc] Fix pkgconfig file generation (#48996)

Co-authored-by: Kai Pastor <dg0yt@darc.de>

ports/shaderc/fix-build-type.patch

@@ -2,14 +2,24 @@ diff --git a/CMakeLists.txt b/CMakeLists.txt
 index b2e92ef..cf0832b 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -152,6 +152,8 @@ function(define_pkg_config_file NAME LIBS)
+@@ -152,6 +152,17 @@ function(define_pkg_config_file NAME LIBS)
    endif()
  endfunction()
  
 +if(BUILD_SHARED_LIBS)
  define_pkg_config_file(shaderc -lshaderc_shared)
 +else()
- define_pkg_config_file(shaderc_static "-lshaderc ${EXTRA_STATIC_PKGCONFIG_LIBS} -lshaderc_util")
++foreach(lib IN LISTS CMAKE_CXX_IMPLICIT_LINK_LIBRARIES)
++    if(lib IN_LIST CMAKE_C_IMPLICIT_LINK_LIBRARIES)
++        continue()
++    elseif(EXISTS "${lib}")
++        string(APPEND EXTRA_STATIC_PKGCONFIG_LIBS " ${lib}")
++    else()
++        string(APPEND EXTRA_STATIC_PKGCONFIG_LIBS " -l${lib}")
++    endif()
++endforeach()
++define_pkg_config_file(shaderc "-lshaderc ${EXTRA_STATIC_PKGCONFIG_LIBS} -lshaderc_util")
+-define_pkg_config_file(shaderc_static "-lshaderc ${EXTRA_STATIC_PKGCONFIG_LIBS} -lshaderc_util")
 -define_pkg_config_file(shaderc_combined -lshaderc_combined)
 +endif()
 diff --git a/libshaderc/CMakeLists.txt b/libshaderc/CMakeLists.txt

ports/shaderc/portfile.cmake

@@ -25,6 +25,8 @@ vcpkg_find_acquire_program(PYTHON3)
 get_filename_component(PYTHON3_EXE_PATH "${PYTHON3}" DIRECTORY)
 vcpkg_add_to_path(PREPEND "${PYTHON3_EXE_PATH}")
 
+# Add these libraries to the pkgconfig file since we patch the build to link against these
+set(EXTRA_STATIC_PKGCONFIG_LIBS "-lglslang -lSPIRV-Tools-opt -lSPIRV-Tools")
 vcpkg_cmake_configure(
     SOURCE_PATH "${SOURCE_PATH}"
     OPTIONS
@@ -32,9 +34,16 @@ vcpkg_cmake_configure(
         "-DCMAKE_PROJECT_INCLUDE=${CMAKE_CURRENT_LIST_DIR}/cmake-project-include.cmake"
         -DSHADERC_ENABLE_EXAMPLES=OFF
         -DSHADERC_SKIP_TESTS=true 
+        "-DEXTRA_STATIC_PKGCONFIG_LIBS=${EXTRA_STATIC_PKGCONFIG_LIBS}"
 )
 
 vcpkg_cmake_install()
+if(NOT VCPKG_BUILD_TYPE)
+    if(VCPKG_TARGET_IS_WINDOWS)
+        vcpkg_replace_string("${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg/shaderc.pc" "-lglslang" "-lglslangd")
+    endif()
+    file(COPY "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg/shaderc.pc" DESTINATION "${CURRENT_PACKAGES_DIR}/debug/lib/pkgconfig")
+endif()
 
 vcpkg_fixup_pkgconfig()
 vcpkg_cmake_config_fixup(PACKAGE_NAME unofficial-shaderc CONFIG_PATH share/unofficial-shaderc)

ports/shaderc/vcpkg.json

@@ -1,6 +1,7 @@
 {
   "name": "shaderc",
   "version": "2025.2",
+  "port-version": 1,
   "description": "A collection of tools, libraries and tests for shader compilation.",
   "homepage": "https://github.com/google/shaderc",
   "license": "Apache-2.0",

versions/baseline.json

@@ -8982,7 +8982,7 @@
     },
     "shaderc": {
       "baseline": "2025.2",
-      "port-version": 0
+      "port-version": 1
     },
     "shaderwriter": {
       "baseline": "2.9.0",

versions/s-/shaderc.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "f80716ef5416dbfd00c192c967b74555c7872a01",
+      "version": "2025.2",
+      "port-version": 1
+    },
     {
       "git-tree": "1f5d61fa5ce03d0f578908c8a7a8bb22c3aa298c",
       "version": "2025.2",