# Checks for symbols
#
# Copyright © 2015 Open Microscopy Environment / University of Dundee
# Copyright © 2021 Roger Leigh <rleigh@codelibre.net>
# Written by Roger Leigh <rleigh@codelibre.net>
#
# Permission to use, copy, modify, distribute, and sell this software and
# its documentation for any purpose is hereby granted without fee, provided
# that (i) the above copyright notices and this permission notice appear in
# all copies of the software and related documentation, and (ii) the names of
# Sam Leffler and Silicon Graphics may not be used in any advertising or
# publicity relating to the software without the specific, prior written
# permission of Sam Leffler and Silicon Graphics.
#
# THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
# EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
# WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
#
# IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
# ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
# OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
# LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.


include(CheckSymbolExists)


# Check for getopt
check_symbol_exists(getopt "unistd.h;stdio.h" HAVE_GETOPT)
check_symbol_exists(optarg "getopt.h" HAVE_DECL_OPTARG)
if (HAVE_DECL_OPTARG)
    set(HAVE_DECL_OPTARG 1)
else()
    set(HAVE_DECL_OPTARG 0)
endif()

# Check for mmap
check_symbol_exists(mmap "sys/mman.h" HAVE_MMAP)

# Check for setmode
check_symbol_exists(setmode "unistd.h" HAVE_SETMODE)