[lv2] Add port (#13462)

ports/lv2/CMakeLists.txt

@@ -0,0 +1,35 @@
+cmake_minimum_required(VERSION 3.17)
+project(lv2 NONE)
+
+add_library(lv2 INTERFACE)
+
+install(
+    TARGETS lv2
+    EXPORT lv2-config
+    INCLUDES DESTINATION include
+)
+
+install(
+    DIRECTORY lv2
+    DESTINATION include
+    FILES_MATCHING PATTERN "*.h"
+)
+install(FILES lv2/core/lv2.h DESTINATION include)
+
+# Install headers to old URI-style paths, using mapping from wscript
+file(READ wscript WSCRIPT)
+string(REGEX MATCHALL "'[^']+' *: 'lv2/[^']+'" SPEC_MAP "${WSCRIPT}")
+foreach(PAIR ${SPEC_MAP})
+    string(REGEX MATCH "'([^']+)' *: '([^']+)'" _ "${PAIR}")
+    install(
+        DIRECTORY "lv2/${CMAKE_MATCH_1}/"
+        DESTINATION "include/${CMAKE_MATCH_2}"
+        FILES_MATCHING PATTERN "*.h"
+    )
+endforeach()
+
+install(
+    EXPORT lv2-config
+    NAMESPACE lv2::
+    DESTINATION "${CMAKE_INSTALL_PREFIX}/share/lv2"
+)

ports/lv2/portfile.cmake

@@ -0,0 +1,25 @@
+vcpkg_from_gitlab(
+    GITLAB_URL https://gitlab.com
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO lv2/lv2
+    REF v1.18.0
+    SHA512 f84c5f2b31f42ed5cab10976d1975743c62f06025a5b67bc99778ba5d0f354c06cb9fad8f5899a52b8c1131f4c9085f5867c83da4d8269c234fd2a22a2c6a689
+    HEAD_REF master
+)
+
+file(COPY "${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt" DESTINATION "${SOURCE_PATH}")
+
+vcpkg_configure_cmake(
+    SOURCE_PATH "${SOURCE_PATH}"
+    PREFER_NINJA
+)
+
+vcpkg_install_cmake()
+
+vcpkg_fixup_cmake_targets()
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug")
+file(
+    INSTALL "${SOURCE_PATH}/COPYING"
+    DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}"
+    RENAME copyright
+)

ports/lv2/vcpkg.json

@@ -0,0 +1,7 @@
+{
+  "name": "lv2",
+  "version-string": "1.18.0",
+  "description": "LV2 is a plugin standard for audio systems. It defines a minimal yet extensible C API for plugin code and a format for plugin \"bundles\".",
+  "homepage": "https://lv2plug.in",
+  "license": "ISC"
+}