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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file LICENSE.rst or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindXMLRPC
----------
Finds the native XML-RPC library for C and C++:
.. code-block:: cmake
find_package(XMLRPC [...] [COMPONENTS <components>...] [...])
XML-RPC is a standard network protocol that enables remote procedure calls
(RPC) between systems. It encodes requests and responses in XML and uses
HTTP as the transport mechanism.
Components
^^^^^^^^^^
The XML-RPC C/C++ library consists of various features (modules) that provide
specific functionality. The availability of these features depends on the
installed XML-RPC library version and system configuration. Some features also
have dependencies on others.
To list the available features on a system, the ``xmlrpc-c-config`` command-line
utility can be used.
In CMake, these features can be specified as components with the
:command:`find_package` command:
.. code-block:: cmake
find_package(XMLRPC [COMPONENTS <components>...])
Components may be:
``c++2``
C++ wrapper API, replacing the legacy ``c++`` feature.
``c++``
The legacy C++ wrapper API (superseded by ``c++2``).
``client``
XML-RPC client functions (also available as the legacy libwww-based feature
named ``libwww-client``).
``cgi-server``
CGI-based server functions.
``abyss-server``
Abyss-based server functions.
``pstream-server``
The pstream-based server functions.
``server-util``
Basic server functions (they are automatically included with ``*-server``
features).
``abyss``
Abyss HTTP server (not needed with ``abyss-server``).
``openssl``
OpenSSL convenience functions.
If no components are specified, this module searches for XML-RPC library and
its include directories without additional features.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
``XMLRPC_FOUND``
Boolean indicating whether the XML-RPC library and all its requested
components were found.
``XMLRPC_INCLUDE_DIRS``
Include directories containing ``xmlrpc.h`` and other headers needed to use
the XML-RPC library.
``XMLRPC_LIBRARIES``
List of libraries needed for linking to XML-RPC library and its requested
features.
Examples
^^^^^^^^
Finding XML-RPC library and its ``client`` feature, and conditionally
creating an interface :ref:`imported target <Imported Targets>` that
encapsulates its usage requirements for linking to a project target:
.. code-block:: cmake
find_package(XMLRPC REQUIRED COMPONENTS client)
if(XMLRPC_FOUND AND NOT TARGET XMLRPC::XMLRPC)
add_library(XMLRPC::XMLRPC INTERFACE IMPORTED)
set_target_properties(
XMLRPC::XMLRPC
PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${XMLRPC_INCLUDE_DIRS}"
INTERFACE_LINK_LIBRARIES "${XMLRPC_LIBRARIES}"
)
endif()
target_link_libraries(example PRIVATE XMLRPC::XMLRPC)
#]=======================================================================]
# First find the config script from which to obtain other values.
find_program(XMLRPC_C_CONFIG NAMES xmlrpc-c-config)
# Check whether we found anything.
if(XMLRPC_C_CONFIG)
set(XMLRPC_C_FOUND 1)
else()
set(XMLRPC_C_FOUND 0)
endif()
# Lookup the include directories needed for the components requested.
if(XMLRPC_C_FOUND)
execute_process(
COMMAND ${XMLRPC_C_CONFIG} ${XMLRPC_FIND_COMPONENTS} --cflags
OUTPUT_VARIABLE XMLRPC_C_CONFIG_CFLAGS
OUTPUT_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE XMLRPC_C_CONFIG_RESULT
)
# Parse the include flags.
if("${XMLRPC_C_CONFIG_RESULT}" STREQUAL "0")
# Convert the compile flags to a CMake list.
string(REGEX REPLACE " +" ";"
XMLRPC_C_CONFIG_CFLAGS "${XMLRPC_C_CONFIG_CFLAGS}")
# Look for -I options.
# FIXME: Use these as hints to a find_path call to find the headers.
set(XMLRPC_INCLUDE_DIRS)
foreach(flag ${XMLRPC_C_CONFIG_CFLAGS})
if("${flag}" MATCHES "^-I(.+)")
file(TO_CMAKE_PATH "${CMAKE_MATCH_1}" DIR)
list(APPEND XMLRPC_INCLUDE_DIRS "${DIR}")
endif()
endforeach()
else()
message("Error running ${XMLRPC_C_CONFIG}: [${XMLRPC_C_CONFIG_RESULT}]")
set(XMLRPC_C_FOUND 0)
endif()
endif()
# Lookup the libraries needed for the components requested.
if(XMLRPC_C_FOUND)
execute_process(
COMMAND ${XMLRPC_C_CONFIG} ${XMLRPC_FIND_COMPONENTS} --libs
OUTPUT_VARIABLE XMLRPC_C_CONFIG_LIBS
OUTPUT_STRIP_TRAILING_WHITESPACE
RESULT_VARIABLE XMLRPC_C_CONFIG_RESULT
)
# Parse the library names and directories.
if("${XMLRPC_C_CONFIG_RESULT}" STREQUAL "0")
string(REGEX REPLACE " +" ";"
XMLRPC_C_CONFIG_LIBS "${XMLRPC_C_CONFIG_LIBS}")
# Look for -L flags for directories and -l flags for library names.
set(XMLRPC_LIBRARY_DIRS)
set(XMLRPC_LIBRARY_NAMES)
foreach(flag ${XMLRPC_C_CONFIG_LIBS})
if("${flag}" MATCHES "^-L(.+)")
file(TO_CMAKE_PATH "${CMAKE_MATCH_1}" DIR)
list(APPEND XMLRPC_LIBRARY_DIRS "${DIR}")
elseif("${flag}" MATCHES "^-l(.+)")
list(APPEND XMLRPC_LIBRARY_NAMES "${CMAKE_MATCH_1}")
endif()
endforeach()
# Search for each library needed using the directories given.
foreach(name ${XMLRPC_LIBRARY_NAMES})
# Look for this library.
find_library(XMLRPC_${name}_LIBRARY
NAMES ${name}
HINTS ${XMLRPC_LIBRARY_DIRS}
)
mark_as_advanced(XMLRPC_${name}_LIBRARY)
# If any library is not found then the whole package is not found.
if(NOT XMLRPC_${name}_LIBRARY)
set(XMLRPC_C_FOUND 0)
endif()
# Build an ordered list of all the libraries needed.
set(XMLRPC_LIBRARIES ${XMLRPC_LIBRARIES} "${XMLRPC_${name}_LIBRARY}")
endforeach()
else()
message("Error running ${XMLRPC_C_CONFIG}: [${XMLRPC_C_CONFIG_RESULT}]")
set(XMLRPC_C_FOUND 0)
endif()
endif()
# Report the results.
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
XMLRPC
REQUIRED_VARS XMLRPC_C_FOUND XMLRPC_LIBRARIES
FAIL_MESSAGE "XMLRPC was not found. Make sure the entries XMLRPC_* are set.")
|
