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PERLQNX(1)	       Perl Programmers Reference Guide 	    PERLQNX(1)

       README.qnx - Perl version 5 on QNX

       As of perl5.7.2 all tests pass under:

	 QNX 4.24G
	 Watcom 10.6 with Beta/970211.wcc.update.tar.F
	 socket3r.lib Nov21 1996.

       As of perl5.8.1 there is at least one test still failing.

       Some tests may complain under known circumstances.

       See below and hints/qnx.sh for more information.

       Under QNX 6.2.0 there are still a few tests which fail.	See below and
       hints/qnx.sh for more information.

       Required Software for Compiling Perl on QNX4

       As with many unix ports, this one depends on a few "standard" unix
       utilities which are not necessarily standard for QNX4.

	   This is used heavily by Configure and then by perl itself. QNX4s
	   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 Wat
	   com 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

       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
	   doesnt handle some of the command line arguments that perl will
	   throw at it.

	   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 with Perl on QNX4

       There is no support for dynamically linked libraries in QNX4.

       If you wish to compile with the Socket extension, you need to have the
       TCP/IP toolkit, and you need to make sure that -lsocket locates the
       correct copy of socket3r.lib. Beware that the Watcom compiler ships
       with a stub version of socket3r.lib which has very little functional
       ity. Also beware the order in which wlink searches directories for
       libraries. You may have /usr/lib/socket3r.lib pointing to the correct
       library, but wlink may pick up /usr/watcom/10.6/usr/lib/socket3r.lib
       instead. Make sure they both point to the correct library, that is,

       The following tests may report errors under QNX4:

       ext/Cwd/Cwd.t will complain if pwd and cwd dont 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.

       ext/IO/lib/IO/t/io_sock.t: Subtests 14 and 22 are skipped due to the
       fact that the functionality to read back the non-blocking status of a
       socket is not implemented in QNXs TCP/IP. This has been reported to
       QNX and it may work with later versions of TCP/IP.

       t/io/tell.t: Subtest 27 is failing. We are still investigating.

       QNX auxiliary files

       The files in the "qnx" directory are:

	   A script that emulates the standard unix archive (aka library)
	   utility.  Under Watcom 10.6, ar is linked to wlib and provides the
	   expected interface. With Watcom 9.5, a cover function is required.
	   This one is fairly crude but has proved adequate for compiling

	   A script that provides C preprocessing functionality.  Configure
	   can generate a similar cover, but it doesnt handle all the com
	   mand-line options that perl throws at it. This might be reasonably
	   placed in /usr/local/bin.

       Outstanding issues with perl under QNX6

       The following tests are still failing for Perl 5.8.1 under QNX 6.2.0:

	 op/sprintf.........................FAILED at test 91
	 lib/Benchmark......................FAILED at test 26

       This is due to a bug in the C librarys printf routine.  printf("%e",
       0. ) produces 0.000000e+0, but ANSI requires 0.000000e+00. QNX has
       acknowledged the bug.

       Norton T. Allen (allen@huarp.harvard.edu)

perl v5.8.8			  2008-04-25			    PERLQNX(1)

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