cmake: Add finders for Asio and WebSocket++

WebSocket++ does provide a CMake package, but version check is broken.
This commit is contained in:
tytan652 2023-02-01 20:03:02 +01:00 committed by Ryan Foster
parent b262eeab12
commit 8c11b0caad
2 changed files with 207 additions and 0 deletions

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#[=======================================================================[.rst
FindAsio
----------
FindModule for Asio and the associated library
Imported Targets
^^^^^^^^^^^^^^^^
.. versionadded:: 2.0
This module defines the :prop_tgt:`IMPORTED` target ``Asio::Asio``.
Result Variables
^^^^^^^^^^^^^^^^
This module sets the following variables:
``Asio_FOUND``
True, if the library was found.
``Asio_VERSION``
Detected version of found Asio library.
Cache variables
^^^^^^^^^^^^^^^
The following cache variables may also be set:
``Asio_INCLUDE_DIR``
Directory containing ``asio.hpp``.
#]=======================================================================]
# cmake-format: off
# cmake-lint: disable=C0103
# cmake-lint: disable=C0301
# cmake-format: on
include(FindPackageHandleStandardArgs)
find_package(PkgConfig QUIET)
if(PKG_CONFIG_FOUND)
pkg_search_module(PC_Asio QUIET asio)
endif()
find_path(
Asio_INCLUDE_DIR
NAMES asio.hpp
HINTS ${PC_Asio_INCLUDE_DIRS}
PATHS /usr/include /usr/local/include
DOC "Asio include directory")
if(PC_Asio_VERSION VERSION_GREATER 0)
set(Asio_VERSION ${PC_Asio_VERSION})
elseif(EXISTS "${Asio_INCLUDE_DIR}/asio/version.hpp")
file(
STRINGS "${Asio_INCLUDE_DIR}/asio/version.hpp" _version_string
REGEX
"#define[ \t]+ASIO_VERSION[ \t]+[0-9]+[ \t]+\/\/[ \t][0-9]+\.[0-9]+\.[0-9]+"
)
string(
REGEX
REPLACE
"#define[ \t]+ASIO_VERSION[ \t]+[0-9]+[ \t]+\/\/[ \t]([0-9]+\.[0-9]+\.[0-9]+)"
"\\1"
Asio_VERSION
"${_version_string}")
else()
if(NOT Asio_FIND_QUIETLY)
message(AUTHOR_WARNING "Failed to find Asio version.")
endif()
set(Asio_VERSION 0.0.0)
endif()
if(CMAKE_HOST_SYSTEM_NAME MATCHES "Darwin|Windows")
set(Asio_ERROR_REASON
"Ensure that obs-deps is provided as part of CMAKE_PREFIX_PATH.")
elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|FreeBSD")
set(Asio_ERROR_REASON
"Ensure Asio library is available in local include paths.")
endif()
find_package_handle_standard_args(
Asio
REQUIRED_VARS Asio_INCLUDE_DIR
VERSION_VAR Asio_VERSION REASON_FAILURE_MESSAGE "${Asio_ERROR_REASON}")
mark_as_advanced(Asio_INCLUDE_DIR)
unset(Asio_ERROR_REASON)
if(Asio_FOUND)
if(NOT TARGET Asio::Asio)
add_library(Asio::Asio INTERFACE IMPORTED)
set_target_properties(Asio::Asio PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
"${Asio_INCLUDE_DIR}")
endif()
endif()
include(FeatureSummary)
set_package_properties(
Asio PROPERTIES
URL "http://think-async.com/Asio"
DESCRIPTION
"Asio is a cross-platform C++ library for network and low-level I/O programming that provides developers with a consistent asynchronous model using a modern C++ approach."
)

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#[=======================================================================[.rst
FindWebsocketpp
----------
FindModule for WebSocket++ and the associated library
Imported Targets
^^^^^^^^^^^^^^^^
.. versionadded:: 2.0
This module defines the :prop_tgt:`IMPORTED` target ``Websocketpp::Websocketpp``.
Result Variables
^^^^^^^^^^^^^^^^
This module sets the following variables:
``Websocketpp_FOUND``
True, if the library was found.
``Websocketpp_VERSION``
Detected version of found Websocketpp library.
Cache variables
^^^^^^^^^^^^^^^
The following cache variables may also be set:
``Websocketpp_INCLUDE_DIR``
Directory containing ``websocketpp/client.hpp``.
#]=======================================================================]
# cmake-format: off
# cmake-lint: disable=C0103
# cmake-lint: disable=C0301
# cmake-format: on
include(FindPackageHandleStandardArgs)
find_path(
Websocketpp_INCLUDE_DIR
NAMES websocketpp/client.hpp
PATHS /usr/include /usr/local/include
DOC "WebSocket++ include directory")
if(EXISTS "${Websocketpp_INCLUDE_DIR}/websocketpp/version.hpp")
file(STRINGS "${Websocketpp_INCLUDE_DIR}/websocketpp/version.hpp"
_version_string
REGEX "^.*(major|minor|patch)_version[ \t]+=[ \t]+[0-9]+")
string(REGEX REPLACE ".*major_version[ \t]+=[ \t]+([0-9]+).*" "\\1"
_version_major "${_version_string}")
string(REGEX REPLACE ".*minor_version[ \t]+=[ \t]+([0-9]+).*" "\\1"
_version_minor "${_version_string}")
string(REGEX REPLACE ".*patch_version[ \t]+=[ \t]+([0-9]+).*" "\\1"
_version_patch "${_version_string}")
set(Websocketpp_VERSION
"${_version_major}.${_version_minor}.${_version_patch}")
unset(_version_major)
unset(_version_minor)
unset(_version_patch)
else()
if(NOT Websocketpp_FIND_QUIETLY)
message(AUTHOR_WARNING "Failed to find WebSocket++ version.")
endif()
set(Websocketpp_VERSION 0.0.0)
endif()
if(CMAKE_HOST_SYSTEM_NAME MATCHES "Darwin|Windows")
set(Websocketpp_ERROR_REASON
"Ensure that obs-deps is provided as part of CMAKE_PREFIX_PATH.")
elseif(CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|FreeBSD")
set(Websocketpp_ERROR_REASON
"Ensure WebSocket++ library is available in local include paths.")
endif()
find_package_handle_standard_args(
Websocketpp
REQUIRED_VARS Websocketpp_INCLUDE_DIR
VERSION_VAR Websocketpp_VERSION REASON_FAILURE_MESSAGE
"${Websocketpp_ERROR_REASON}")
mark_as_advanced(Websocketpp_INCLUDE_DIR)
unset(Websocketpp_ERROR_REASON)
if(Websocketpp_FOUND)
if(NOT TARGET Websocketpp::Websocketpp)
add_library(Websocketpp::Websocketpp INTERFACE IMPORTED)
set_target_properties(
Websocketpp::Websocketpp PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
"${Websocketpp_INCLUDE_DIR}")
endif()
endif()
include(FeatureSummary)
set_package_properties(
Websocketpp PROPERTIES
URL "https://www.zaphoyd.com/websocketpp/"
DESCRIPTION
"WebSocket++ is a header only C++ library that implements RFC6455 The WebSocket Protocol."
)