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# - Find dl functions
# This module finds dl libraries.
#
# It sets the following variables:
# DL_FOUND - Set to false, or undefined, if dl libraries aren't found.
# DL_INCLUDE_DIR - The dl include directory.
# DL_LIBRARY - The dl library to link against.
INCLUDE(CheckFunctionExists)
FIND_PATH(DL_INCLUDE_DIR NAMES dlfcn.h)
FIND_LIBRARY(DL_LIBRARY NAMES dl)
IF (DL_LIBRARY)
SET(DL_FOUND TRUE)
ELSE (DL_LIBRARY)
# if dlopen can be found without linking in dl then,
# dlopen is part of libc, so don't need to link extra libs.
CHECK_FUNCTION_EXISTS(dlopen DL_FOUND)
SET(DL_LIBRARY "")
ENDIF (DL_LIBRARY)
IF (DL_FOUND)
# show which dl was found only if not quiet
IF (NOT DL_FIND_QUIETLY)
MESSAGE(STATUS "Found dl: ${DL_LIBRARY}")
ENDIF (NOT DL_FIND_QUIETLY)
ELSE (DL_FOUND)
# fatal error if dl is required but not found
IF (DL_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Could not find dl")
ENDIF (DL_FIND_REQUIRED)
ENDIF (DL_FOUND)
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