1 files changed, 118 insertions, 0 deletions
diff --git a/vcpkg/scripts/cmake/vcpkg_install_gn.cmake b/vcpkg/scripts/cmake/vcpkg_install_gn.cmake
new file mode 100644
index 0000000..5d96cbd
--- /dev/null
+++ b/vcpkg/scripts/cmake/vcpkg_install_gn.cmake
@@ -0,0 +1,118 @@
+function(z_vcpkg_install_gn_get_target_type out_var)
+    cmake_parse_arguments(PARSE_ARGV 1 "arg" "" "SOURCE_PATH;BUILD_DIR;TARGET" "")
+    if(DEFINED arg_UNPARSED_ARGUMENTS)
+        message(FATAL_ERROR "Internal error: get_target_type was passed extra arguments: ${arg_UNPARSED_ARGUMENTS}")
+    endif()
+
+    execute_process(
+        COMMAND "${GN}" desc "${arg_BUILD_DIR}" "${arg_TARGET}"
+        WORKING_DIRECTORY "${arg_SOURCE_PATH}"
+        OUTPUT_VARIABLE output
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+    if(output MATCHES [[type: ([A-Za-z0-9_]+)]])
+        set("${out_var}" "${CMAKE_MATCH_1}" PARENT_SCOPE)
+    else()
+        message(FATAL_ERROR "invalid result from `gn desc`: ${output}")
+    endif()
+endfunction()
+
+function(z_vcpkg_install_gn_get_desc out_var)
+    cmake_parse_arguments(PARSE_ARGV 1 "arg" "" "SOURCE_PATH;BUILD_DIR;TARGET;WHAT_TO_DISPLAY" "")
+    if(DEFINED arg_UNPARSED_ARGUMENTS)
+        message(FATAL_ERROR "Internal error: get_desc was passed extra arguments: ${arg_UNPARSED_ARGUMENTS}")
+    endif()
+
+    execute_process(
+        COMMAND "${GN}" desc "${arg_BUILD_DIR}" "${arg_TARGET}" "${arg_WHAT_TO_DISPLAY}"
+        WORKING_DIRECTORY "${arg_SOURCE_PATH}"
+        OUTPUT_VARIABLE output
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+    string(REPLACE ";" "\\;" output "${output}")
+    string(REGEX REPLACE "\n|(\r\n)" ";" output "${output}")
+    set("${out_var}" "${output}" PARENT_SCOPE)
+endfunction()
+
+function(z_vcpkg_install_gn_install)
+    cmake_parse_arguments(PARSE_ARGV 0 "arg" "" "SOURCE_PATH;BUILD_DIR;INSTALL_DIR" "TARGETS")
+    if(DEFINED arg_UNPARSED_ARGUMENTS)
+        message(FATAL_ERROR "Internal error: install was passed extra arguments: ${arg_UNPARSED_ARGUMENTS}")
+    endif()
+
+    foreach(target IN LISTS arg_TARGETS)
+        # GN targets must start with a //
+        z_vcpkg_install_gn_get_desc(outputs
+            SOURCE_PATH "${arg_SOURCE_PATH}"
+            BUILD_DIR "${arg_BUILD_DIR}"
+            TARGET "//${target}"
+            WHAT_TO_DISPLAY outputs
+        )
+        z_vcpkg_install_gn_get_target_type(target_type
+            SOURCE_PATH "${arg_SOURCE_PATH}"
+            BUILD_DIR "${arg_BUILD_DIR}"
+            TARGET "//${target}"
+        )
+
+        foreach(output IN LISTS outputs)
+            if(output MATCHES "^//")
+                # relative path (e.g. //out/Release/target.lib)
+                string(REGEX REPLACE "^//" "${arg_SOURCE_PATH}/" output "${output}")
+            elseif(output MATCHES "^/" AND CMAKE_HOST_WIN32)
+                # absolute path (e.g. /C:/path/to/target.lib)
+                string(REGEX REPLACE "^/" "" output "${output}")
+            endif()
+
+            if(NOT EXISTS "${output}")
+                message(WARNING "Output for target `${target}` doesn't exist: ${output}.")
+                continue()
+            endif()
+
+            if(target_type STREQUAL "executable")
+                file(INSTALL "${output}" DESTINATION "${arg_INSTALL_DIR}/tools")
+            elseif(output MATCHES "(\\.dll|\\.pdb)$")
+                file(INSTALL "${output}" DESTINATION "${arg_INSTALL_DIR}/bin")
+            else()
+                file(INSTALL "${output}" DESTINATION "${arg_INSTALL_DIR}/lib")
+            endif()
+        endforeach()
+    endforeach()
+endfunction()
+
+function(vcpkg_install_gn)
+    if(Z_VCPKG_GN_INSTALL_GUARD)
+        message(FATAL_ERROR "The ${PORT} port already depends on vcpkg-gn; using both vcpkg-gn and vcpkg_install_gn in the same port is unsupported.")
+    else()
+        message("${Z_VCPKG_BACKCOMPAT_MESSAGE_LEVEL}" "This function 'vcpkg_install_gn' is obsolete. Use 'vcpkg_gn_install' in port 'vcpkg-gn'.")
+    endif()
+
+    cmake_parse_arguments(PARSE_ARGV 0 arg "" "SOURCE_PATH" "TARGETS")
+    if(DEFINED arg_UNPARSED_ARGUMENTS)
+        message(WARNING "vcpkg_install_gn was passed extra arguments: ${arg_UNPARSED_ARGUMENTS}")
+    endif()
+    if(NOT DEFINED arg_SOURCE_PATH)
+        message(FATAL_ERROR "SOURCE_PATH must be specified.")
+    endif()
+
+    vcpkg_build_ninja(TARGETS ${arg_TARGETS})
+
+    vcpkg_find_acquire_program(GN)
+
+    if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "debug")
+        z_vcpkg_install_gn_install(
+            SOURCE_PATH "${arg_SOURCE_PATH}"
+            BUILD_DIR "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-dbg"
+            INSTALL_DIR "${CURRENT_PACKAGES_DIR}/debug"
+            TARGETS ${arg_TARGETS}
+        )
+    endif()
+
+    if(NOT DEFINED VCPKG_BUILD_TYPE OR VCPKG_BUILD_TYPE STREQUAL "release")
+        z_vcpkg_install_gn_install(
+            SOURCE_PATH "${arg_SOURCE_PATH}"
+            BUILD_DIR "${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-rel"
+            INSTALL_DIR "${CURRENT_PACKAGES_DIR}"
+            TARGETS ${arg_TARGETS}
+        )
+    endif()
+endfunction()