1PERLQNX(1) Perl Programmers Reference Guide PERLQNX(1)
2
6 perlqnx - Perl version 5 on QNX
7
9 As of perl5.7.2 all tests pass under:
10 QNX 4.24G
12 Watcom 10.6 with Beta/970211.wcc.update.tar.F
13 socket3r.lib Nov21 1996.
14 As of perl5.8.1 there is at least one test still failing.
16 Some tests may complain under known circumstances.
18 See below and hints/qnx.sh for more information.
20 Under QNX 6.2.0 there are still a few tests which fail. See below and
22 hints/qnx.sh for more information.
23 Required Software for Compiling Perl on QNX4
25 As with many unix ports, this one depends on a few "standard" unix
26 utilities which are not necessarily standard for QNX4.
27 /bin/sh
29 This is used heavily by Configure and then by perl itself. QNX4's
30 version is fine, but Configure will choke on the 16-bit version, so
31 if you are running QNX 4.22, link /bin/sh to /bin32/ksh
32 ar This is the standard unix library builder. We use wlib. With
34 Watcom 10.6, when wlib is linked as "ar", it behaves like ar and
35 all is fine. Under 9.5, a cover is required. One is included in
36 ../qnx
37 nm This is used (optionally) by configure to list the contents of
39 libraries. I will generate a cover function on the fly in the UU
40 directory.
41 cpp Configure and perl need a way to invoke a C preprocessor. I have
43 created a simple cover for cc which does the right thing. Without
44 this, Configure will create its own wrapper which works, but it
45 doesn't handle some of the command line arguments that perl will
46 throw at it.
47 make
49 You really need GNU make to compile this. GNU make ships by default
50 with QNX 4.23, but you can get it from quics for earlier versions.
51 Outstanding Issues with Perl on QNX4
53 There is no support for dynamically linked libraries in QNX4.
54 If you wish to compile with the Socket extension, you need to have the
56 TCP/IP toolkit, and you need to make sure that -lsocket locates the
57 correct copy of socket3r.lib. Beware that the Watcom compiler ships
58 with a stub version of socket3r.lib which has very little
59 functionality. Also beware the order in which wlink searches
60 directories for libraries. You may have /usr/lib/socket3r.lib pointing
61 to the correct library, but wlink may pick up
62 /usr/watcom/10.6/usr/lib/socket3r.lib instead. Make sure they both
63 point to the correct library, that is,
64 /usr/tcptk/current/usr/lib/socket3r.lib.
65 The following tests may report errors under QNX4:
67 dist/Cwd/Cwd.t will complain if `pwd` and cwd don't give the same
69 results. cwd calls `fullpath -t`, so if you cd `fullpath -t` before
70 running the test, it will pass.
71 lib/File/Find/taint.t will complain if '.' is in your PATH. The PATH
73 test is triggered because cwd calls `fullpath -t`.
74 ext/IO/lib/IO/t/io_sock.t: Subtests 14 and 22 are skipped due to the
76 fact that the functionality to read back the non-blocking status of a
77 socket is not implemented in QNX's TCP/IP. This has been reported to
78 QNX and it may work with later versions of TCP/IP.
79 t/io/tell.t: Subtest 27 is failing. We are still investigating.
81 QNX auxiliary files
83 The files in the "qnx" directory are:
84 qnx/ar
86 A script that emulates the standard unix archive (aka library)
87 utility. Under Watcom 10.6, ar is linked to wlib and provides the
88 expected interface. With Watcom 9.5, a cover function is required.
89 This one is fairly crude but has proved adequate for compiling
90 perl.
91 qnx/cpp
93 A script that provides C preprocessing functionality. Configure
94 can generate a similar cover, but it doesn't handle all the
95 command-line options that perl throws at it. This might be
96 reasonably placed in /usr/local/bin.
97 Outstanding issues with perl under QNX6
99 The following tests are still failing for Perl 5.8.1 under QNX 6.2.0:
100 op/sprintf.........................FAILED at test 91
102 lib/Benchmark......................FAILED at test 26
103 This is due to a bug in the C library's printf routine. printf("'%e'",
105 0. ) produces '0.000000e+0', but ANSI requires '0.000000e+00'. QNX has
106 acknowledged the bug.
107 Cross-compilation
109 Perl supports cross-compiling to QNX NTO through the Native Development
110 Kit (NDK) for the Blackberry 10. This means that you can cross-compile
111 for both ARM and x86 versions of the platform.
112 Setting up a cross-compilation environment
114 You can download the NDK from
116 <http://developer.blackberry.com/native/downloads/>.
117 See
119 <http://developer.blackberry.com/native/documentation/cascades/getting_started/setting_up.html>
120 for instructions to set up your device prior to attempting anything
121 else.
122 Once you've installed the NDK and set up your device, all that's left
124 to do is setting up the device and the cross-compilation environment.
125 Blackberry provides a script, "bbndk-env.sh" (occasionally named
126 something like "bbndk-env_10_1_0_4828.sh") which can be used to do
127 this. However, there's a bit of a snag that we have to work through:
128 The script modifies PATH so that 'gcc' or 'ar' point to their cross-
129 compilation equivalents, which screws over the build process.
130 So instead you'll want to do something like this:
132 $ orig_path=$PATH
134 $ source $location_of_bbndk/bbndk-env*.sh
135 $ export PATH="$orig_path:$PATH"
136 Besides putting the cross-compiler and the rest of the toolchain in
138 your PATH, this will also provide the QNX_TARGET variable, which we
139 will pass to Configure through -Dsysroot.
140 Preparing the target system
142 It's quite possible that the target system doesn't have a readily
144 available /tmp, so it's generall safer to do something like this:
145 $ ssh $TARGETUSER@$TARGETHOST 'rm -rf perl; mkdir perl; mkdir perl/tmp'
147 $ export TARGETDIR=`ssh $TARGETUSER@$TARGETHOST pwd`/perl
148 $ export TARGETENV="export TMPDIR=$TARGETDIR/tmp; "
149 Later on, we'll pass this to Configure through -Dtargetenv
151 Calling Configure
153 If you are targetting an ARM device -- which currently includes the
155 vast majority of phones and tablets -- you'll want to pass
156 -Dcc=arm-unknown-nto-qnx8.0.0eabi-gcc to Configure. Alternatively, if
157 you are targetting an x86 device, or using the simulator provided with
158 the NDK, you should specify -Dcc=ntox86-gcc instead.
159 A sample Configure invocation looks something like this:
161 ./Configure -des -Dusecrosscompile \
163 -Dsysroot=$QNX_TARGET \
164 -Dtargetdir=$TARGETDIR \
165 -Dtargetenv="$TARGETENV" \
166 -Dcc=ntox86-gcc \
167 -Dtarghost=... # Usual cross-compilation options
168
170 Norton T. Allen (allen@huarp.harvard.edu)
171perl v5.32.1 2021-05-31 PERLQNX(1)