4 files changed, 130 insertions, 0 deletions
diff --git a/vcpkg/ports/openctm/CMakeLists.txt b/vcpkg/ports/openctm/CMakeLists.txt
new file mode 100644
index 0000000..583a559
--- /dev/null
+++ b/vcpkg/ports/openctm/CMakeLists.txt
@@ -0,0 +1,57 @@
+cmake_minimum_required(VERSION 3.19...3.23)
+project(
+  openctm
+  VERSION 1.0.3
+  LANGUAGES C)
+
+find_package(7zip CONFIG REQUIRED)
+
+set(PUBLIC_HEADERS lib/openctm.h lib/openctmpp.h)
+
+add_library(
+  openctm
+  lib/compressMG1.c
+  lib/compressMG2.c
+  lib/compressRAW.c
+  lib/openctm.c
+  lib/stream.c)
+
+target_include_directories(
+  openctm
+  PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/lib>
+         $<INSTALL_INTERFACE:include>)
+target_link_libraries(openctm PRIVATE 7zip::7zip)
+target_compile_definitions(openctm PRIVATE OPENCTM_BUILD)
+if(NOT BUILD_SHARED_LIBS)
+  target_compile_definitions(openctm PUBLIC OPENCTM_STATIC)
+endif()
+target_compile_features(openctm PRIVATE c_std_99)
+set_target_properties(openctm PROPERTIES C_VISIBILITY_PRESET hidden
+                                         PUBLIC_HEADER "${PUBLIC_HEADERS}")
+
+include(GNUInstallDirs)
+install(
+  TARGETS openctm
+  EXPORT unofficial-openctmConfig
+  RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+  ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+  LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+  PUBLIC_HEADER DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}" COMPONENT dev)
+
+include(CMakePackageConfigHelpers)
+set(VERSION_FILE_PATH "${CMAKE_CURRENT_BINARY_DIR}/unofficial-openctmConfigVersion.cmake")
+write_basic_package_version_file(
+  "${VERSION_FILE_PATH}"
+  VERSION ${PROJECT_VERSION}
+  COMPATIBILITY SameMajorVersion)
+install(FILES "${VERSION_FILE_PATH}" DESTINATION share/unofficial-openctm)
+
+install(FILES ${PUBLIC_HEADERS} DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
+
+install(
+  EXPORT unofficial-openctmConfig
+  FILE unofficial-openctmConfig.cmake
+  NAMESPACE unofficial::openctm::
+  DESTINATION share/unofficial-openctm)
+
+export(PACKAGE openctm)
diff --git a/vcpkg/ports/openctm/portfile.cmake b/vcpkg/ports/openctm/portfile.cmake
new file mode 100644
index 0000000..17c29cc
--- /dev/null
+++ b/vcpkg/ports/openctm/portfile.cmake
@@ -0,0 +1,30 @@
+vcpkg_from_sourceforge(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO openctm
+    REF OpenCTM-1.0.3
+    SHA512 fdfa08d19ecbfea99ba01aa2032e941ed6313394a96bd69f8984c2d2d079d836c616471d2bdf6f40175e75659f3ad0ba41502bc3d8224091472f40893ea8746e
+    FILENAME "OpenCTM-1.0.3-src.tar.bz2"
+    PATCHES
+        use-7zip.patch
+)
+file(REMOVE_RECURSE "${SOURCE_PATH}/lib/liblzma")
+
+file(COPY "${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt" DESTINATION "${SOURCE_PATH}")
+
+vcpkg_cmake_configure(
+    SOURCE_PATH "${SOURCE_PATH}"
+)
+
+vcpkg_cmake_install()
+vcpkg_copy_pdbs()
+vcpkg_cmake_config_fixup(PACKAGE_NAME unofficial-openctm)
+
+vcpkg_replace_string("${CURRENT_PACKAGES_DIR}/share/unofficial-openctm/unofficial-openctmConfig.cmake"
+"# Generated by CMake"
+[[# Generated by CMake
+include(CMakeFindDependencyMacro)
+find_dependency(7zip CONFIG)]])
+
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/include")
+
+vcpkg_install_copyright(FILE_LIST "${SOURCE_PATH}/LICENSE.txt")
diff --git a/vcpkg/ports/openctm/use-7zip.patch b/vcpkg/ports/openctm/use-7zip.patch
new file mode 100644
index 0000000..002d557
--- /dev/null
+++ b/vcpkg/ports/openctm/use-7zip.patch
@@ -0,0 +1,24 @@
+diff --git a/lib/stream.c b/lib/stream.c
+index 53b1b72..bb47c3b 100644
+--- a/lib/stream.c
++++ b/lib/stream.c
+@@ -310,8 +310,7 @@ int _ctmStreamWritePackedInts(_CTMcontext * self, CTMint * aData,
+                          outProps,
+                          &outPropsSize,
+                          self->mCompressionLevel, // Level (0-9)
+-                         0, -1, -1, -1, -1, -1,   // Default values (set by level)
+-                         lzmaAlgo                 // Algorithm (0 = fast, 1 = normal)
++                         0, -1, -1, -1, -1, -1   // Default values (set by level)
+                         );
+ 
+   // Free temporary array
+@@ -477,8 +476,7 @@ int _ctmStreamWritePackedFloats(_CTMcontext * self, CTMfloat * aData,
+                          outProps,
+                          &outPropsSize,
+                          self->mCompressionLevel, // Level (0-9)
+-                         0, -1, -1, -1, -1, -1,   // Default values (set by level)
+-                         lzmaAlgo                 // Algorithm (0 = fast, 1 = normal)
++                         0, -1, -1, -1, -1, -1   // Default values (set by level)
+                         );
+ 
+   // Free temporary array
diff --git a/vcpkg/ports/openctm/vcpkg.json b/vcpkg/ports/openctm/vcpkg.json
new file mode 100644
index 0000000..1b1212d
--- /dev/null
+++ b/vcpkg/ports/openctm/vcpkg.json
@@ -0,0 +1,19 @@
+{
+  "name": "openctm",
+  "version": "1.0.3",
+  "port-version": 3,
+  "description": "OpenCTM — the Open Compressed Triangle Mesh file format — is a file format, a software library and a tool set for compression of 3D triangle meshes.",
+  "homepage": "https://openctm.sourceforge.net/",
+  "license": "Zlib",
+  "dependencies": [
+    "7zip",
+    {
+      "name": "vcpkg-cmake",
+      "host": true
+    },
+    {
+      "name": "vcpkg-cmake-config",
+      "host": true
+    }
+  ]
+}