#----------------------------------------------------------------
# QNX hints
#
# These hints were written for QNX4, but are in the process
# of being extended to encompass Neutrino as well.
#
# As of perl5.004_04, all tests pass under:
#  QNX 4.23A
#  Watcom 10.6 with Beta/970211.wcc.update.tar.F
#  socket3r.lib Nov21 1996.
# perl-5.6.1 runs well on QNX4 with a few known test failures
# perl-5.6.0 ships with QNX RTP (Neutrino) but the build is
# not yet straightforward.
#
# As with many unix ports, this one depends on a few "standard"
# unix utilities which are not necessarily standard for QNX4.
#
# /bin/sh  This is used heavily by Configure and then by
#          perl itself. QNX4's version is fine, but Configure
#          will choke on the 16-bit version, so if you are
#          running QNX 4.22, link /bin/sh to /bin32/ksh
# ar       This is the standard unix library builder.
#          We use wlib. With Watcom 10.6, when wlib is
#          linked as "ar", it behaves like ar and all is
#          fine. Under 9.5, a cover is required. One is
#          included in ../qnx
# nm       This is used (optionally) by configure to list
#          the contents of libraries. I will generate
#          a cover function on the fly in the UU directory.
# cpp      Configure and perl need a way to invoke a C
#          preprocessor. I have created a simple cover
#          for cc which does the right thing. Without this,
#          Configure will create its own wrapper which works,
#          but it doesn't handle some of the command line arguments
#          that perl will throw at it.
# make     You really need GNU make to compile this. GNU make
#          ships by default with QNX 4.23, but you can get it
#          from quics for earlier versions.
#----------------------------------------------------------------
# Outstanding Issues for QNX4:
#   There is no support for dynamically linked libraries in
#   QNX4.
# 
#   ext/Cwd/Cwd.t will complain if `pwd` and cwd don't give
#   the same results. cwd calls `fullpath -t`, so if you
#   cd `fullpath -t` before running the test, it will
#   pass.
#
#   lib/File/Find/taint.t will complain if '.' is in your
#   PATH. The PATH test is triggered because cwd calls
#   `fullpath -t`.
#
#   lib/ExtUtils.t: If you follow these hints and include
#   -w4 in your ccflags, this test will complain about
#   extra .err files appearing in its test directory.
#
#   ext/IO/lib/IO/t/io_sock.t Still investigating
#   ext/POSIX/sigaction.t Still investigating
#
# Older issues:
#   lib/posix.t test failed on test 17 because acos(1) != 0.
#      Resolved in 970211 Beta
#   lib/io_udp.t test hangs because of a bug in getsockname().
#      Fixed in latest BETA socket3r.lib
#----------------------------------------------------------------
# These hints were submitted by:
#   Norton T. Allen
#   Harvard University Atmospheric Research Project
#   allen@huarp.harvard.edu
#
# If you have suggestions or changes, please let me know.
#----------------------------------------------------------------

echo ""
echo "Some tests may fail. Please read the hints/qnx.sh file."
echo ""

#----------------------------------------------------------------
# At present, all QNX4 systems are equivalent architectures,
# so it is reasonable to call archname=x86-qnx rather than
# making an unnecessary distinction between AT-qnx and PCI-qnx,
# for example. I will use uname's architecture for Neutrino.
#----------------------------------------------------------------
set X `uname -a`
shift
[ "$1" != "QNX" ] && echo "uname doesn't look like QNX!"
case $4 in
  42[2-9]) archname='x86-qnx';;
  *) osname='nto'
	 osvers=$3
     archname="$5-nto";;
esac

if [ "$osname" = "qnx" ]; then
  #----------------------------------------------------------------
  # QNX doesn't come with a csh and the ports of tcsh I've used
  # don't work reliably:
  #----------------------------------------------------------------
  csh=''
  d_csh='undef'
  full_csh=''

  #----------------------------------------------------------------
  # setuid scripts are secure under QNX.
  #  (Basically, the same race conditions apply, but assuming
  #  the scripts are located in a secure directory, the methods
  #  for exploiting the race condition are defeated because
  #  the loader expands the script name fully before executing
  #  the interpreter.)
  #----------------------------------------------------------------
  d_suidsafe='define'

  #----------------------------------------------------------------
  # difftime is implemented as a preprocessor macro, so it doesn't show
  # up in the libraries:
  #----------------------------------------------------------------
  d_difftime='define'

  #----------------------------------------------------------------
  # strtod is in the math library, but we can't tell Configure
  # about the math library or it will confuse the linker
  #----------------------------------------------------------------
  d_strtod='define'

  lib_ext='3r.lib'
  libc='/usr/lib/clib3r.lib'

  #----------------------------------------------------------------
  # ccflags:
  # I like to turn the warnings up high, but a few common
  # constructs make a lot of noise, so I turn those warnings off.
  # A few still remain...
  #
  # unix.h is required as a general rule for unixy applications.
  #----------------------------------------------------------------
  ccflags='-mf -w4 -Wc,-wcd=202 -Wc,-wcd=203 -Wc,-wcd=302 -Wc,-fi=unix.h'

  #----------------------------------------------------------------
  # ldflags:
  # If you want debugging information, you must specify -g on the
  # link as well as the compile. If optimize != -g, you should
  # remove this.
  #----------------------------------------------------------------
  ldflags="-g -N1M"

  so='none'
  selecttype='fd_set *'

  #----------------------------------------------------------------
  # Add -lunix to list of libs. This is needed mainly so the nm
  # search will find funcs in the unix lib. Including unix.h should
  # automatically include the library without -l.
  #----------------------------------------------------------------
  libswanted="$libswanted unix"

  if [ -z "`which ar 2>/dev/null`" ]; then
	cat <<-'EOF' >&4
	  I don't see an 'ar', so I'm guessing you are running
	  Watcom 9.5 or earlier. You may want to install the ar
	  cover found in the qnx subdirectory of this distribution.
	  It might reasonably be placed in /usr/local/bin.

	EOF
  fi
  #----------------------------------------------------------------
  # Here is a nm script which fixes up wlib's output to look
  # something like nm's, at least enough so that Configure can
  # use it.
  #----------------------------------------------------------------
  if [ -z "`which nm 2>/dev/null`" ]; then
	cat <<-EOF
	  Creating a quick-and-dirty nm cover for	Configure to use:

	EOF
	cat >./UU/nm <<-'EOF'
	  #! /bin/sh
	  #__USAGE
	  #%C	<lib> [<lib> ...]
	  #	Designed to mimic Unix's nm utility to list
	  #	defined symbols in a library
	  unset WLIB
	  for i in $*; do wlib $i; done |
		awk '
		  /^  / {
			for (i = 1; i <= NF; i++) {
			  sub("_$", "", $i)
			  print "000000  T " $i
			}
		  }'
	EOF
	chmod +x ./UU/nm
  fi

  cppstdin=`which cpp 2>/dev/null`
  if [ -n "$cppstdin" ]; then
	cat <<-EOF >&4
	  I found a cpp at $cppstdin and will assume it is a good
	  thing to use. If this proves to be false, there is a
	  thin cover for cpp in the qnx subdirectory of this
	  distribution which you could move into your path.
	EOF
	cpprun="$cppstdin"
  else
	cat <<-EOF >&4
	
	  There is a cpp cover in the qnx subdirectory of this
	  distribution which works a little better than the
	  Configure default. You may wish to copy it to
	  /usr/local/bin or some other suitable location.
	EOF
  fi
fi