#.rst:
# FindCURL
# --------
#
# Find curl
#
# Find the native CURL headers and libraries.
#
# ::
#
#   CURL_INCLUDE_DIRS   - where to find curl/curl.h, etc.
#   CURL_LIBRARIES      - List of libraries when using curl.
#   CURL_FOUND          - True if curl found.
#   CURL_VERSION_STRING - the version of curl found (since CMake 2.8.8)

#=============================================================================
# Copyright 2006-2009 Kitware, Inc.
# Copyright 2012 Rolf Eike Beer <eike@sf-mail.de>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
#  License text for the above reference.)

set(CURL_LIBRARY_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
  )

find_package(PkgConfig)
if(PKG_CONFIG_FOUND)
  pkg_search_module(CURL QUIET libcurl)
endif()

if(NOT CURL_FOUND)

    # Look for the header file.
    find_path(CURL_INCLUDE_DIR NAMES curl/curl.h)
    mark_as_advanced(CURL_INCLUDE_DIR)

    # Look for the library (sorted from most current/relevant entry to least).
    find_library(CURL_LIBRARY 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
    )
    mark_as_advanced(CURL_LIBRARY)

    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()

    include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
    FIND_PACKAGE_HANDLE_STANDARD_ARGS(CURL
                                      REQUIRED_VARS CURL_LIBRARY CURL_INCLUDE_DIR
                                      VERSION_VAR CURL_VERSION_STRING)

    if(CURL_FOUND)
      set(CURL_LIBRARIES ${CURL_LIBRARY})
      set(CURL_INCLUDE_DIRS ${CURL_INCLUDE_DIR})
    endif()

endif()