add lz4

ports/lz4/CMakeLists.txt

@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.0)
+project(lz4)
+
+if(BUILD_SHARED_LIBS)
+    add_definitions(-DLZ4_DLL_EXPORT)
+endif()
+add_definitions(-DXXH_NAMESPACE=LZ4_)
+
+add_library(lz4
+    lib/lz4.c
+    lib/lz4frame.c
+    lib/lz4hc.c
+    lib/xxhash.c)
+
+install(TARGETS lz4
+    RUNTIME DESTINATION bin
+    ARCHIVE DESTINATION lib
+    LIBRARY DESTINATION lib)
+
+if(NOT LZ4_SKIP_INCLUDES)
+    install(FILES
+        lib/lz4.h
+        lib/lz4frame.h
+        lib/lz4hc.h
+        DESTINATION include)
+endif()

ports/lz4/CONTROL

@@ -0,0 +1,3 @@
+Source: lz4
+Version: 1.7.4.2
+Description: Lossless compression algorithm, providing compression speed at 400 MB/s per core.

ports/lz4/auto-define-import-macro.patch

@@ -0,0 +1,28 @@
+diff --git a/lz4.h b/lz4.h
+index 7420ad8..c1c3e56 100644
+--- a/lz4.h
++++ b/lz4.h
+@@ -73,6 +73,9 @@ extern "C" {
+ *  LZ4_DLL_EXPORT :
+ *  Enable exporting of functions when building a Windows DLL
+ */
++
++#define LZ4_DLL_IMPORT 1
++
+ #if defined(LZ4_DLL_EXPORT) && (LZ4_DLL_EXPORT==1)
+ #  define LZ4LIB_API __declspec(dllexport)
+ #elif defined(LZ4_DLL_IMPORT) && (LZ4_DLL_IMPORT==1)
+diff --git a/lz4frame.h b/lz4frame.h
+index 3104d2e..4442461 100644
+--- a/lz4frame.h
++++ b/lz4frame.h
+@@ -55,6 +55,9 @@ extern "C" {
+ *  LZ4_DLL_EXPORT :
+ *  Enable exporting of functions when building a Windows DLL
+ */
++
++#define LZ4_DLL_IMPORT 1
++
+ #if defined(LZ4_DLL_EXPORT) && (LZ4_DLL_EXPORT==1)
+ #  define LZ4FLIB_API __declspec(dllexport)
+ #elif defined(LZ4_DLL_IMPORT) && (LZ4_DLL_IMPORT==1)

ports/lz4/portfile.cmake

@@ -0,0 +1,29 @@
+
+include(vcpkg_common_functions)
+set(SOURCE_PATH ${CURRENT_BUILDTREES_DIR}/src/lz4-1.7.4.2)
+vcpkg_download_distfile(ARCHIVE
+    URLS "https://github.com/lz4/lz4/archive/v1.7.4.2.zip"
+    FILENAME "lz4-1.7.4.2.zip"
+    SHA512 c9a65031225ccda43ad4c7622e9f36762c18e58b4aaf43b1a33f219186fb55c43ca354f574a1591188db39f57631351b1b90f96e0c150e28de08dcb65c6759d0)
+
+vcpkg_extract_source_archive(${ARCHIVE})
+
+file(COPY ${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt DESTINATION ${SOURCE_PATH})
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    OPTIONS_DEBUG
+        -DLZ4_SKIP_INCLUDES=ON)
+
+vcpkg_install_cmake()
+vcpkg_copy_pdbs()
+
+if(VCPKG_LIBRARY_LINKAGE STREQUAL dynamic)
+    vcpkg_apply_patches(
+        SOURCE_PATH ${CURRENT_PACKAGES_DIR}/include
+        PATCHES
+            ${CMAKE_CURRENT_LIST_DIR}/auto-define-import-macro.patch)
+endif()
+
+file(COPY ${SOURCE_PATH}/lib/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/lz4)
+file(RENAME ${CURRENT_PACKAGES_DIR}/share/lz4/LICENSE ${CURRENT_PACKAGES_DIR}/share/lz4/copyright)