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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.

       Some tests may complain under known circumstances. See below and hints/qnx.sh for more

       Under QNX 6.1.0 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. 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 gen-
	   erate 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.

	   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 func-
       tionality. 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, /usr/tcptk/current/usr/lib/socket3r.lib.

       The following tests may report errors under QNX4:

       ext/Cwd/Cwd.t will complain if `pwd` and cwd don't give the same results. cwd calls `full-
       path -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: Subtest 14 is skipped due to the fact that the functionality to
       read back the non-blocking status of a socket is not implemented in QNX's TCP/IP. This has
       been reported to QNX and it may work with later versions of TCP/IP.

       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 com-
	   piling perl.

	   A script that provides C preprocessing functionality.  Configure can generate a simi-
	   lar cover, but it doesn't handle all the command-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 5.7.3 under QNX 6.1.0:

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

       This is due to a bug in the C library's printf routine.	printf("'%e'", 0. ) produces
       '0.000000e+0', but ANSI requires '0.000000e+00'. QNX has acknowledged the bug and it
       should be fixed in 6.2.0.

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

perl v5.8.0				    2003-02-18				       PERLQNX(1)
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