# Locate the OpenLDAP client libraries without relying on pkg-config.

find_path(OpenLDAP_INCLUDE_DIR
    NAMES ldap.h)

find_library(OpenLDAP_LDAP_LIBRARY
    NAMES ldap)

find_library(OpenLDAP_LBER_LIBRARY
    NAMES lber)

if(OpenLDAP_INCLUDE_DIR AND EXISTS "${OpenLDAP_INCLUDE_DIR}/ldap_features.h")
    file(STRINGS "${OpenLDAP_INCLUDE_DIR}/ldap_features.h"
        _OpenLDAP_VERSION_LINES
        REGEX "^#define LDAP_VENDOR_VERSION_(MAJOR|MINOR|PATCH) [0-9]+$")
    foreach(_part MAJOR MINOR PATCH)
        string(REGEX MATCH
            "LDAP_VENDOR_VERSION_${_part} ([0-9]+)"
            _match "${_OpenLDAP_VERSION_LINES}")
        set(OpenLDAP_VERSION_${_part} "${CMAKE_MATCH_1}")
    endforeach()
    if(DEFINED OpenLDAP_VERSION_MAJOR AND
       DEFINED OpenLDAP_VERSION_MINOR AND
       DEFINED OpenLDAP_VERSION_PATCH)
        set(OpenLDAP_VERSION
            "${OpenLDAP_VERSION_MAJOR}.${OpenLDAP_VERSION_MINOR}.${OpenLDAP_VERSION_PATCH}")
    endif()
endif()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(OpenLDAP
    REQUIRED_VARS OpenLDAP_INCLUDE_DIR OpenLDAP_LDAP_LIBRARY OpenLDAP_LBER_LIBRARY
    VERSION_VAR OpenLDAP_VERSION)

if(OpenLDAP_FOUND AND NOT TARGET OpenLDAP::LDAP)
    add_library(OpenLDAP::LDAP UNKNOWN IMPORTED)
    set_target_properties(OpenLDAP::LDAP PROPERTIES
        IMPORTED_LOCATION "${OpenLDAP_LDAP_LIBRARY}"
        INTERFACE_INCLUDE_DIRECTORIES "${OpenLDAP_INCLUDE_DIR}"
        INTERFACE_LINK_LIBRARIES "${OpenLDAP_LBER_LIBRARY}")
endif()

mark_as_advanced(OpenLDAP_INCLUDE_DIR OpenLDAP_LDAP_LIBRARY OpenLDAP_LBER_LIBRARY)