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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindCURL
--------
Find the native CURL headers and libraries.
.. versionadded:: 3.14
This module accept optional COMPONENTS to check supported features and
protocols:
::
PROTOCOLS: ICT FILE FTP FTPS GOPHER HTTP HTTPS IMAP IMAPS LDAP LDAPS POP3
POP3S RTMP RTSP SCP SFTP SMB SMBS SMTP SMTPS TELNET TFTP
FEATURES: SSL IPv6 UnixSockets libz AsynchDNS IDN GSS-API PSL SPNEGO
Kerberos NTLM NTLM_WB TLS-SRP HTTP2 HTTPS-proxy
IMPORTED Targets
^^^^^^^^^^^^^^^^
.. versionadded:: 3.12
This module defines :prop_tgt:`IMPORTED` target ``CURL::libcurl``, if
curl has been found.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
``CURL_FOUND``
"True" if ``curl`` found.
``CURL_INCLUDE_DIRS``
where to find ``curl``/``curl.h``, etc.
``CURL_LIBRARIES``
List of libraries when using ``curl``.
``CURL_VERSION_STRING``
The version of ``curl`` found.
.. versionadded:: 3.13
Debug and Release variants are found separately.
CURL CMake
^^^^^^^^^^
.. versionadded:: 3.17
If CURL was built using the CMake buildsystem then it provides its own
``CURLConfig.cmake`` file for use with the :command:`find_package` command's
config mode. This module looks for this file and, if found,
returns its results with no further action.
Set ``CURL_NO_CURL_CMAKE`` to ``ON`` to disable this search.
#]=======================================================================]
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
if(NOT CURL_NO_CURL_CMAKE)
# do a find package call to specifically look for the CMake version
# of curl
find_package(CURL QUIET NO_MODULE)
mark_as_advanced(CURL_DIR)
# if we found the CURL cmake package then we are done, and
# can print what we found and return.
if(CURL_FOUND)
find_package_handle_standard_args(CURL HANDLE_COMPONENTS CONFIG_MODE)
# The upstream curl package sets CURL_VERSION, not CURL_VERSION_STRING.
set(CURL_VERSION_STRING "${CURL_VERSION}")
return()
endif()
endif()
find_package(PkgConfig QUIET)
if(PKG_CONFIG_FOUND)
pkg_check_modules(PC_CURL QUIET libcurl)
if(PC_CURL_FOUND)
pkg_get_variable(CURL_SUPPORTED_PROTOCOLS libcurl supported_protocols)
pkg_get_variable(CURL_SUPPORTED_FEATURES libcurl supported_features)
endif()
endif()
# Look for the header file.
find_path(CURL_INCLUDE_DIR
NAMES curl/curl.h
HINTS ${PC_CURL_INCLUDE_DIRS})
mark_as_advanced(CURL_INCLUDE_DIR)
if(NOT CURL_LIBRARY)
# Look for the library (sorted from most current/relevant entry to least).
find_library(CURL_LIBRARY_RELEASE NAMES
curl
# Windows MSVC prebuilts:
curllib
libcurl_imp
curllib_static
# Windows older "Win32 - MSVC" prebuilts (libcurl.lib, e.g. libcurl-7.15.5-win32-msvc.zip):
libcurl
NAMES_PER_DIR
HINTS ${PC_CURL_LIBRARY_DIRS}
)
mark_as_advanced(CURL_LIBRARY_RELEASE)
find_library(CURL_LIBRARY_DEBUG NAMES
# Windows MSVC CMake builds in debug configuration on vcpkg:
libcurl-d_imp
libcurl-d
NAMES_PER_DIR
HINTS ${PC_CURL_LIBRARY_DIRS}
)
mark_as_advanced(CURL_LIBRARY_DEBUG)
include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
select_library_configurations(CURL)
endif()
if(CURL_INCLUDE_DIR)
foreach(_curl_version_header curlver.h curl.h)
if(EXISTS "${CURL_INCLUDE_DIR}/curl/${_curl_version_header}")
file(STRINGS "${CURL_INCLUDE_DIR}/curl/${_curl_version_header}" curl_version_str REGEX "^#define[\t ]+LIBCURL_VERSION[\t ]+\".*\"")
string(REGEX REPLACE "^#define[\t ]+LIBCURL_VERSION[\t ]+\"([^\"]*)\".*" "\\1" CURL_VERSION_STRING "${curl_version_str}")
unset(curl_version_str)
break()
endif()
endforeach()
endif()
if(CURL_FIND_COMPONENTS)
set(CURL_KNOWN_PROTOCOLS ICT FILE FTP FTPS GOPHER HTTP HTTPS IMAP IMAPS LDAP LDAPS POP3 POP3S RTMP RTSP SCP SFTP SMB SMBS SMTP SMTPS TELNET TFTP)
set(CURL_KNOWN_FEATURES SSL IPv6 UnixSockets libz AsynchDNS IDN GSS-API PSL SPNEGO Kerberos NTLM NTLM_WB TLS-SRP HTTP2 HTTPS-proxy)
foreach(component IN LISTS CURL_KNOWN_PROTOCOLS CURL_KNOWN_FEATURES)
set(CURL_${component}_FOUND FALSE)
endforeach()
if(NOT PC_CURL_FOUND)
find_program(CURL_CONFIG_EXECUTABLE NAMES curl-config)
if(CURL_CONFIG_EXECUTABLE)
execute_process(COMMAND ${CURL_CONFIG_EXECUTABLE} --version
OUTPUT_VARIABLE CURL_CONFIG_VERSION_STRING
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
execute_process(COMMAND ${CURL_CONFIG_EXECUTABLE} --feature
OUTPUT_VARIABLE CURL_CONFIG_FEATURES_STRING
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE "\n" ";" CURL_SUPPORTED_FEATURES "${CURL_CONFIG_FEATURES_STRING}")
execute_process(COMMAND ${CURL_CONFIG_EXECUTABLE} --protocols
OUTPUT_VARIABLE CURL_CONFIG_PROTOCOLS_STRING
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE "\n" ";" CURL_SUPPORTED_PROTOCOLS "${CURL_CONFIG_PROTOCOLS_STRING}")
endif()
endif()
foreach(component IN LISTS CURL_FIND_COMPONENTS)
list(FIND CURL_KNOWN_PROTOCOLS ${component} _found)
if(NOT _found EQUAL -1)
list(FIND CURL_SUPPORTED_PROTOCOLS ${component} _found)
if(NOT _found EQUAL -1)
set(CURL_${component}_FOUND TRUE)
elseif(CURL_FIND_REQUIRED)
message(FATAL_ERROR "CURL: Required protocol ${component} is not found")
endif()
else()
list(FIND CURL_SUPPORTED_FEATURES ${component} _found)
if(NOT _found EQUAL -1)
set(CURL_${component}_FOUND TRUE)
elseif(CURL_FIND_REQUIRED)
message(FATAL_ERROR "CURL: Required feature ${component} is not found")
endif()
endif()
endforeach()
endif()
find_package_handle_standard_args(CURL
REQUIRED_VARS CURL_LIBRARY CURL_INCLUDE_DIR
VERSION_VAR CURL_VERSION_STRING
HANDLE_COMPONENTS)
if(CURL_FOUND)
set(CURL_LIBRARIES ${CURL_LIBRARY})
set(CURL_INCLUDE_DIRS ${CURL_INCLUDE_DIR})
if(NOT TARGET CURL::libcurl)
add_library(CURL::libcurl UNKNOWN IMPORTED)
set_target_properties(CURL::libcurl PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${CURL_INCLUDE_DIRS}")
if(EXISTS "${CURL_LIBRARY}")
set_target_properties(CURL::libcurl PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION "${CURL_LIBRARY}")
endif()
if(CURL_LIBRARY_RELEASE)
set_property(TARGET CURL::libcurl APPEND PROPERTY
IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(CURL::libcurl PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION_RELEASE "${CURL_LIBRARY_RELEASE}")
endif()
if(CURL_LIBRARY_DEBUG)
set_property(TARGET CURL::libcurl APPEND PROPERTY
IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(CURL::libcurl PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION_DEBUG "${CURL_LIBRARY_DEBUG}")
endif()
endif()
endif()
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