--- /dev/null
+++ a/CMakeLists.txt
@@ -0,0 +1,302 @@
+cmake_minimum_required(VERSION 3.16)
+
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake")
+
+include(OpusFilePackageVersion)
+get_package_version(PACKAGE_VERSION PROJECT_VERSION)
+string(REPLACE "." ";" PROJECT_VERSION_LIST ${PROJECT_VERSION})
+list(GET PROJECT_VERSION_LIST 0 PROJECT_VERSION_MAJOR)
+list(GET PROJECT_VERSION_LIST 1 PROJECT_VERSION_MINOR)
+
+project(OpusFile
+  VERSION ${PROJECT_VERSION}
+  LANGUAGES C
+)
+
+option(OP_DISABLE_HTTP "Disable HTTP support" OFF)
+option(OP_DISABLE_FLOAT_API "Disable floating-point API" OFF)
+option(OP_FIXED_POINT "Enable fixed-point calculation" OFF)
+option(OP_ENABLE_ASSERTIONS "Enable assertions in code" OFF)
+option(OP_DISABLE_EXAMPLES "Do not build example applications" OFF)
+option(OP_DISABLE_DOCS "Do not build API documentation" OFF)
+
+include(GNUInstallDirs)
+
+find_package(Ogg REQUIRED)
+find_package(Opus REQUIRED)
+
+include(CMakePushCheckState)
+include(CheckSymbolExists)
+cmake_push_check_state(RESET)
+include(CheckLibraryExists)
+check_library_exists(m lrintf "" OP_HAVE_LIBM)
+if(OP_HAVE_LIBM)
+  list(APPEND CMAKE_REQUIRED_LIBRARIES "m")
+endif()
+check_symbol_exists(lrintf "math.h" OP_HAVE_LRINTF)
+cmake_pop_check_state()
+
+add_library(opusfile
+  "${CMAKE_CURRENT_SOURCE_DIR}/include/opusfile.h"
+  "${CMAKE_CURRENT_SOURCE_DIR}/src/info.c"
+  "${CMAKE_CURRENT_SOURCE_DIR}/src/internal.c"
+  "${CMAKE_CURRENT_SOURCE_DIR}/src/internal.h"
+  "${CMAKE_CURRENT_SOURCE_DIR}/src/opusfile.c"
+  "${CMAKE_CURRENT_SOURCE_DIR}/src/stream.c"
+)
+add_library(OpusFile::opusfile ALIAS opusfile)
+set_target_properties(opusfile PROPERTIES
+  PUBLIC_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/include/opusfile.h"
+  VERSION ${PROJECT_VERSION}
+  SOVERSION ${PROJECT_VERSION_MAJOR}
+)
+target_include_directories(opusfile
+  PRIVATE
+    "${CMAKE_CURRENT_SOURCE_DIR}/include"
+  INTERFACE
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/opus>
+)
+target_link_libraries(opusfile
+  PUBLIC
+    Ogg::ogg
+    Opus::opus
+    $<$<BOOL:${OP_HAVE_LIBM}>:m>
+)
+target_compile_options(opusfile
+  PRIVATE
+    $<$<C_COMPILER_ID:MSVC>:/wd4267>
+    $<$<C_COMPILER_ID:MSVC>:/wd4244>
+    $<$<C_COMPILER_ID:MSVC>:/wd4090>
+    $<$<C_COMPILER_ID:Clang,GNU>:-std=c89>
+    $<$<C_COMPILER_ID:Clang,GNU>:-pedantic>
+    $<$<C_COMPILER_ID:Clang,GNU>:-Wall>
+    $<$<C_COMPILER_ID:Clang,GNU>:-Wextra>
+    $<$<C_COMPILER_ID:Clang,GNU>:-Wno-parentheses>
+    $<$<C_COMPILER_ID:Clang,GNU>:-Wno-long-long>
+    $<$<C_COMPILER_ID:Clang,GNU>:-fvisibility=hidden>
+)
+target_compile_definitions(opusfile
+  PRIVATE
+    $<$<BOOL:${OP_DISABLE_FLOAT_API}>:OP_DISABLE_FLOAT_API>
+    $<$<BOOL:${OP_FIXED_POINT}>:OP_FIXED_POINT>
+    $<$<BOOL:${OP_ENABLE_ASSERTIONS}>:OP_ENABLE_ASSERTIONS>
+    $<$<BOOL:${OP_HAVE_LRINTF}>:OP_HAVE_LRINTF>
+)
+install(TARGETS opusfile
+  EXPORT OpusFileTargets
+  RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+  LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+  ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+  INCLUDES DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/opus"
+  PUBLIC_HEADER DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/opus"
+)
+
+if(NOT OP_DISABLE_HTTP)
+  find_package(OpenSSL REQUIRED)
+
+  include(CheckIncludeFile)
+  include(CheckCSourceCompiles)
+  cmake_push_check_state(RESET)
+  if(NOT WIN32)
+    check_include_file("sys/socket.h" OP_HAVE_SYS_SOCKET_H)
+    if(NOT OP_HAVE_SYS_SOCKET_H)
+      message(FATAL_ERROR "HTTP support requires a POSIX socket library")
+    endif()
+  endif()
+  check_c_source_compiles(
+    "#include <time.h>
+    int main(void)
+    {
+      struct timespec ts;
+      return clock_gettime(CLOCK_REALTIME, &ts);
+    }"
+    OP_HAVE_CLOCK_GETTIME
+  )
+  if(NOT OP_HAVE_CLOCK_GETTIME)
+    check_symbol_exists(ftime "sys/timeb.h" OP_HAVE_FTIME)
+    if(NOT OP_HAVE_FTIME)
+      message(FATAL_ERROR "HTTP support requires either clock_gettime() or ftime()")
+    endif()
+  endif()
+  cmake_pop_check_state()
+
+  add_library(opusurl
+    "${CMAKE_CURRENT_SOURCE_DIR}/include/opusfile.h"
+    "${CMAKE_CURRENT_SOURCE_DIR}/src/http.c"
+    "${CMAKE_CURRENT_SOURCE_DIR}/src/internal.c"
+    "${CMAKE_CURRENT_SOURCE_DIR}/src/internal.h"
+  )
+  add_library(OpusFile::opusurl ALIAS opusurl)
+  if(WIN32)
+    target_sources(opusurl PRIVATE
+      "${CMAKE_CURRENT_SOURCE_DIR}/src/wincerts.c"
+      "${CMAKE_CURRENT_SOURCE_DIR}/src/winerrno.h"
+    )
+  endif()
+  set_target_properties(opusurl PROPERTIES
+    PUBLIC_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/include/opusfile.h"
+    VERSION ${PROJECT_VERSION}
+    SOVERSION ${PROJECT_VERSION_MAJOR}
+  )
+  target_include_directories(opusurl
+    PRIVATE
+      "${CMAKE_CURRENT_SOURCE_DIR}/include"
+    INTERFACE
+      $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+      $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/opus>
+  )
+  target_compile_definitions(opusurl
+    PRIVATE
+      $<$<BOOL:${OP_DISABLE_FLOAT_API}>:OP_DISABLE_FLOAT_API>
+      $<$<BOOL:${OP_FIXED_POINT}>:OP_FIXED_POINT>
+      $<$<BOOL:${OP_ENABLE_ASSERTIONS}>:OP_ENABLE_ASSERTIONS>
+      $<$<BOOL:${OP_HAVE_LRINTF}>:OP_HAVE_LRINTF>
+      $<$<BOOL:${OP_HAVE_CLOCK_GETTIME}>:OP_HAVE_CLOCK_GETTIME>
+      $<$<BOOL:${OP_HAVE_FTIME}>:OP_HAVE_FTIME>
+      OP_ENABLE_HTTP
+  )
+  target_link_libraries(opusurl
+    PRIVATE
+      opusfile
+      OpenSSL::SSL
+      $<$<C_COMPILER_ID:MSVC>:ws2_32>
+      $<$<C_COMPILER_ID:MSVC>:crypt32>
+      $<$<BOOL:${OP_HAVE_LIBM}>:m>
+  )
+  target_compile_options(opusurl
+    PRIVATE
+      $<$<C_COMPILER_ID:MSVC>:/wd4267>
+      $<$<C_COMPILER_ID:MSVC>:/wd4244>
+      $<$<C_COMPILER_ID:MSVC>:/wd4090>
+      $<$<C_COMPILER_ID:Clang,GNU>:-std=c89>
+      $<$<C_COMPILER_ID:Clang,GNU>:-pedantic>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wall>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wextra>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wno-parentheses>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wno-long-long>
+      $<$<C_COMPILER_ID:Clang,GNU>:-fvisibility=hidden>
+  )
+  install(TARGETS opusurl
+    EXPORT OpusFileTargets
+    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+    LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+    INCLUDES DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/opus"
+    PUBLIC_HEADER DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/opus"
+  )
+endif()
+
+if(NOT OP_DISABLE_EXAMPLES)
+  add_executable(opusfile_example
+    "${CMAKE_CURRENT_SOURCE_DIR}/examples/opusfile_example.c"
+  )
+  add_executable(OpusFile::opusfile_example ALIAS opusfile_example)
+  if(WIN32)
+    target_sources(opusfile_example PRIVATE
+      "${CMAKE_CURRENT_SOURCE_DIR}/examples/win32utf8.c"
+      "${CMAKE_CURRENT_SOURCE_DIR}/examples/win32utf8.h"
+    )
+  endif()
+  target_include_directories(opusfile_example
+    PRIVATE
+      "${CMAKE_CURRENT_SOURCE_DIR}/examples"
+  )
+  target_link_libraries(opusfile_example
+    PRIVATE
+      opusfile
+      opusurl
+  )
+  target_compile_options(opusfile_example
+    PRIVATE
+      $<$<C_COMPILER_ID:MSVC>:/wd4267>
+      $<$<C_COMPILER_ID:MSVC>:/wd4244>
+      $<$<C_COMPILER_ID:MSVC>:/wd4090>
+      $<$<C_COMPILER_ID:Clang,GNU>:-std=c89>
+      $<$<C_COMPILER_ID:Clang,GNU>:-pedantic>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wall>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wextra>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wno-parentheses>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wno-long-long>
+      $<$<C_COMPILER_ID:Clang,GNU>:-fvisibility=hidden>
+  )
+
+  add_executable(seeking_example
+    "${CMAKE_CURRENT_SOURCE_DIR}/examples/seeking_example.c"
+  )
+  add_executable(OpusFile::seeking_example ALIAS seeking_example)
+  if(WIN32)
+    target_sources(seeking_example PRIVATE
+      "${CMAKE_CURRENT_SOURCE_DIR}/examples/win32utf8.c"
+      "${CMAKE_CURRENT_SOURCE_DIR}/examples/win32utf8.h"
+    )
+  endif()
+  target_include_directories(seeking_example
+    PRIVATE
+      "${CMAKE_CURRENT_SOURCE_DIR}/examples"
+  )
+  target_link_libraries(seeking_example
+    PRIVATE
+      opusfile
+      opusurl
+  )
+  target_compile_options(seeking_example
+    PRIVATE
+      $<$<C_COMPILER_ID:MSVC>:/wd4267>
+      $<$<C_COMPILER_ID:MSVC>:/wd4244>
+      $<$<C_COMPILER_ID:MSVC>:/wd4090>
+      $<$<C_COMPILER_ID:Clang,GNU>:-std=c89>
+      $<$<C_COMPILER_ID:Clang,GNU>:-pedantic>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wall>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wextra>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wno-parentheses>
+      $<$<C_COMPILER_ID:Clang,GNU>:-Wno-long-long>
+      $<$<C_COMPILER_ID:Clang,GNU>:-fvisibility=hidden>
+  )
+endif()
+
+if(NOT OP_DISABLE_DOCS)
+  find_package(Doxygen OPTIONAL_COMPONENTS dot)
+
+  set(DOXYGEN_PROJECT_BRIEF "Stand-alone decoder library for .opus files.")
+  set(DOXYGEN_OPTIMIZE_OUTPUT_FOR_C YES)
+
+  set(DOXYGEN_QUIET YES)
+  set(DOXYGEN_WARNINGS YES)
+  set(DOXYGEN_WARN_IF_UNDOCUMENTED YES)
+  set(DOXYGEN_WARN_IF_DOC_ERROR YES)
+  set(DOXYGEN_WARN_NO_PARAMDOC YES)
+
+  set(DOXYGEN_JAVADOC_AUTOBRIEF YES)
+  set(DOXYGEN_SORT_MEMBER_DOCS NO)
+
+  set(DOXYGEN_PROJECT_LOGO "${CMAKE_CURRENT_SOURCE_DIR}/doc/opus_logo.svg")
+
+  set(DOXYGEN_FULL_PATH_NAMES NO)
+
+  doxygen_add_docs(doxygen "${CMAKE_CURRENT_SOURCE_DIR}/include/opusfile.h" ALL USE_STAMP_FILE)
+endif()
+
+install(EXPORT OpusFileTargets
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/opusfile"
+  NAMESPACE OpusFile::
+)
+include(CMakePackageConfigHelpers)
+configure_package_config_file(
+  "${CMAKE_CURRENT_SOURCE_DIR}/cmake/OpusFileConfig.cmake.in"
+  "${CMAKE_CURRENT_BINARY_DIR}/OpusFileConfig.cmake"
+  INSTALL_DESTINATION
+    "${CMAKE_INSTALL_LIBDIR}/cmake/opusfile"
+)
+write_basic_package_version_file(
+  "OpusFileConfigVersion.cmake"
+  VERSION "${PACKAGE_VERSION}"
+  COMPATIBILITY AnyNewerVersion
+)
+install(
+  FILES
+    "${CMAKE_CURRENT_BINARY_DIR}/OpusFileConfig.cmake"
+    "${CMAKE_CURRENT_BINARY_DIR}/OpusFileConfigVersion.cmake"
+  DESTINATION
+    "${CMAKE_INSTALL_LIBDIR}/cmake/opusfile"
+)
--- /dev/null
+++ a/cmake/FindOgg.cmake
@@ -0,0 +1,7 @@
+find_package(Ogg CONFIG)
+if(NOT TARGET Ogg::ogg)
+  find_package(PkgConfig REQUIRED)
+  pkg_check_modules(Ogg REQUIRED IMPORTED_TARGET ogg)
+  set_target_properties(PkgConfig::Ogg PROPERTIES IMPORTED_GLOBAL TRUE)
+  add_library(Ogg::ogg ALIAS PkgConfig::Ogg)
+endif()
--- /dev/null
+++ a/cmake/FindOpus.cmake
@@ -0,0 +1,7 @@
+find_package(Opus CONFIG)
+if(NOT TARGET Opus::opus)
+  find_package(PkgConfig REQUIRED)
+  pkg_check_modules(Opus REQUIRED IMPORTED_TARGET opus)
+  set_target_properties(PkgConfig::Opus PROPERTIES IMPORTED_GLOBAL TRUE)
+  add_library(Opus::opus ALIAS PkgConfig::Opus)
+endif()
--- /dev/null
+++ a/cmake/OpusFileConfig.cmake.in
@@ -0,0 +1,52 @@
+@PACKAGE_INIT@
+
+# Ported from CMakeFindDependencyMacro.cmake (finding configs and using pkgconfig as fallback)
+set(cmake_quiet_arg)
+if(${CMAKE_FIND_PACKAGE_NAME}_FIND_QUIETLY)
+  set(cmake_quiet_arg QUIET)
+endif()
+set(cmake_required_arg)
+if(${CMAKE_FIND_PACKAGE_NAME}_FIND_REQUIRED)
+  set(cmake_required_arg REQUIRED)
+endif()
+
+find_package(Ogg CONFIG ${cmake_quiet_arg})
+if(NOT TARGET Ogg::ogg)
+  find_package(PkgConfig REQUIRED ${cmake_quiet_arg})
+  pkg_check_modules(Ogg ${cmake_required_arg} ${cmake_quiet_arg} IMPORTED_TARGET ogg)
+  set_target_properties(PkgConfig::Ogg PROPERTIES IMPORTED_GLOBAL TRUE)
+  add_library(Ogg::ogg ALIAS PkgConfig::Ogg)
+endif()
+
+if (NOT TARGET Ogg::ogg)
+  set(${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE "${CMAKE_FIND_PACKAGE_NAME} could not be found because dependency Ogg could not be found.")
+  set(${CMAKE_FIND_PACKAGE_NAME}_FOUND False)
+  return()
+endif()
+
+find_package(Opus CONFIG ${cmake_quiet_arg})
+if(NOT TARGET Opus::opus)
+  find_package(PkgConfig REQUIRED ${cmake_quiet_arg})
+  pkg_check_modules(Opus ${cmake_required_arg} ${cmake_quiet_arg} IMPORTED_TARGET opus)
+  set_target_properties(PkgConfig::Opus PROPERTIES IMPORTED_GLOBAL TRUE)
+  add_library(Opus::opus ALIAS PkgConfig::Opus)
+endif()
+
+if (NOT TARGET Opus::opus)
+  set(${CMAKE_FIND_PACKAGE_NAME}_NOT_FOUND_MESSAGE "${CMAKE_FIND_PACKAGE_NAME} could not be found because dependency Opus could not be found.")
+  set(${CMAKE_FIND_PACKAGE_NAME}_FOUND False)
+  return()
+endif()
+
+set(cmake_fd_required_arg)
+set(cmake_fd_quiet_arg)
+
+if (NOT @OP_DISABLE_HTTP@)
+  include(CMakeFindDependencyMacro)
+  find_dependency(OpenSSL)
+endif()
+
+# Including targets of opusfile
+include("${CMAKE_CURRENT_LIST_DIR}/opusfileTargets.cmake")
+
+check_required_components(opusfile)
--- /dev/null
+++ a/cmake/OpusFilePackageVersion.cmake
@@ -0,0 +1,70 @@
+if(__opusfile_version)
+  return()
+endif()
+set(__opusfile_version INCLUDED)
+
+function(get_package_version PACKAGE_VERSION PROJECT_VERSION)
+
+  find_package(Git)
+  if(GIT_FOUND AND EXISTS "${CMAKE_CURRENT_LIST_DIR}/.git")
+    execute_process(COMMAND ${GIT_EXECUTABLE}
+                    --git-dir=${CMAKE_CURRENT_LIST_DIR}/.git describe
+                    --tags --match "v*" OUTPUT_VARIABLE OPUSFILE_PACKAGE_VERSION)
+    if(OPUSFILE_PACKAGE_VERSION)
+      string(STRIP ${OPUSFILE_PACKAGE_VERSION}, OPUSFILE_PACKAGE_VERSION)
+      string(REPLACE \n
+                     ""
+                     OPUSFILE_PACKAGE_VERSION
+                     ${OPUSFILE_PACKAGE_VERSION})
+      string(REPLACE ,
+                     ""
+                     OPUSFILE_PACKAGE_VERSION
+                     ${OPUSFILE_PACKAGE_VERSION})
+
+      string(SUBSTRING ${OPUSFILE_PACKAGE_VERSION}
+                       1
+                       -1
+                       OPUSFILE_PACKAGE_VERSION)
+      message(STATUS "Opus package version from git repo: ${OPUSFILE_PACKAGE_VERSION}")
+    endif()
+
+  elseif(EXISTS "${CMAKE_CURRENT_LIST_DIR}/package_version"
+         AND NOT OPUSFILE_PACKAGE_VERSION)
+    # Not a git repo, lets' try to parse it from package_version file if exists
+    file(STRINGS package_version OPUSFILE_PACKAGE_VERSION
+         LIMIT_COUNT 1
+         REGEX "PACKAGE_VERSION=")
+    string(REPLACE "PACKAGE_VERSION="
+                   ""
+                   OPUSFILE_PACKAGE_VERSION
+                   ${OPUSFILE_PACKAGE_VERSION})
+    string(REPLACE "\""
+                   ""
+                   OPUSFILE_PACKAGE_VERSION
+                   ${OPUSFILE_PACKAGE_VERSION})
+    # In case we have a unknown dist here we just replace it with 0
+    string(REPLACE "unknown"
+                   "0"
+                   OPUSFILE_PACKAGE_VERSION
+                   ${OPUSFILE_PACKAGE_VERSION})
+      message(STATUS "Opus package version from package_version file: ${OPUSFILE_PACKAGE_VERSION}")
+  endif()
+
+  if(OPUSFILE_PACKAGE_VERSION)
+    string(REGEX
+      REPLACE "^([0-9]+.[0-9]+\\.?([0-9]+)?).*"
+               "\\1"
+               OPUSFILE_PROJECT_VERSION
+               ${OPUSFILE_PACKAGE_VERSION})
+  else()
+    # fail to parse version from git and package version
+    message(WARNING "Could not get package version.")
+    set(OPUSFILE_PACKAGE_VERSION 0)
+    set(OPUSFILE_PROJECT_VERSION 0)
+  endif()
+
+  message(STATUS "Opus project version: ${OPUSFILE_PROJECT_VERSION}")
+
+  set(PACKAGE_VERSION ${OPUSFILE_PACKAGE_VERSION} PARENT_SCOPE)
+  set(PROJECT_VERSION ${OPUSFILE_PROJECT_VERSION} PARENT_SCOPE)
+endfunction()