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1If you read this file _as_is_, just ignore the funny characters you see.
2It is written in the POD format (see pod/perlpod.pod) which is specially
3designed to be readable as is.
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4
5=head1 NAME
6
d66be8f9 7README.hpux - Perl version 5 on Hewlett-Packard Unix (HP-UX) systems
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8
9=head1 DESCRIPTION
10
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11This document describes various features of HP's Unix operating system
12(HP-UX) that will affect how Perl version 5 (hereafter just Perl) is
13compiled and/or runs.
f2a260d6 14
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15=head2 Using perl as shipped with HP-UX
16
17As of application release September 2001, HP-UX 11.00 is shipped with
210b36aa 18perl-5.6.1 in /opt/perl. The first occurrence is on CD 5012-7954 and
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19can be installed using
20
af8e01f2 21 swinstall -s /cdrom perl
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22
23assuming you have mounted that CD on /cdrom. In this version the
24following modules are installed:
25
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26 ActivePerl::DocTools-0.04 HTML::Parser-3.19 XML::DOM-1.25
27 Archive::Tar-0.072 HTML::Tagset-3.03 XML::Parser-2.27
28 Compress::Zlib-1.08 MIME::Base64-2.11 XML::Simple-1.05
29 Convert::ASN1-0.10 Net-1.07 XML::XPath-1.09
30 Digest::MD5-2.11 PPM-2.1.5 XML::XSLT-0.32
31 File::CounterFile-0.12 SOAP::Lite-0.46 libwww-perl-5.51
32 Font::AFM-1.18 Storable-1.011 libxml-perl-0.07
33 HTML-Tree-3.11 URI-1.11 perl-ldap-0.23
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34
35The build is a portable hppa-1.1 multithread build that supports large
36files compiled with gcc-2.9-hppa-991112
37
38If you perform a new installation, then Perl will be installed
39automatically.
40
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41=head2 Using perl from HP's porting centre
42
43HP porting centre tries very hard to keep up with customer demand and
44release updates from the Open Source community. Having precompiled
45Perl binaries available is obvious.
46
47The HP porting centres are limited in what systems they are allowed
48to port to and they usually choose the two most recent OS versions
49available. This means that at the moment of writing, there are only
50HPUX-11.00 and 11-20/22 (IA64) ports available on the porting centres.
51
52HP has asked the porting centre to move Open Source binaries
53from /opt to /usr/local, so binaries produced since the start
54of July 2002 are located in /usr/local.
55
56One of HP porting centres URL's is http://hpux.connect.org.uk/
57The port currently available is built with GNU gcc.
58
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59=head2 Compiling Perl 5 on HP-UX
60
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61When compiling Perl, you must use an ANSI C compiler. The C compiler
62that ships with all HP-UX systems is a K&R compiler that should only be
63used to build new kernels.
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64
65Perl can be compiled with either HP's ANSI C compiler or with gcc. The
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66former is recommended, as not only can it compile Perl with no
67difficulty, but also can take advantage of features listed later that
68require the use of HP compiler-specific command-line flags.
f2a260d6 69
60ed1d8c 70If you decide to use gcc, make sure your installation is recent and
b48c3bfb 71complete, and be sure to read the Perl INSTALL file for more gcc-specific
60ed1d8c 72details.
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73
74=head2 PA-RISC
75
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76HP's current Unix systems run on its own Precision Architecture
77(PA-RISC) chip. HP-UX used to run on the Motorola MC68000 family of
78chips, but any machine with this chip in it is quite obsolete and this
79document will not attempt to address issues for compiling Perl on the
80Motorola chipset.
f2a260d6 81
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82The most recent version of PA-RISC at the time of this document's last
83update is 2.0.
f2a260d6 84
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85A complete list of models at the time the OS was built is in the file
86/usr/sam/lib/mo/sched.models. The first column corresponds to the last
87part of the output of the "model" command. The second column is the
88PA-RISC version and the third column is the exact chip type used.
89(Start browsing at the bottom to prevent confusion ;-)
90
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91 # model
92 9000/800/L1000-44
93 # grep L1000-44 /usr/sam/lib/mo/sched.models
94 L1000-44 2.0 PA8500
95
96=head2 Portability Between PA-RISC Versions
97
98An executable compiled on a PA-RISC 2.0 platform will not execute on a
99PA-RISC 1.1 platform, even if they are running the same version of
100HP-UX. If you are building Perl on a PA-RISC 2.0 platform and want that
101Perl to also run on a PA-RISC 1.1, the compiler flags +DAportable and
102+DS32 should be used.
103
104It is no longer possible to compile PA-RISC 1.0 executables on either
105the PA-RISC 1.1 or 2.0 platforms. The command-line flags are accepted,
106but the resulting executable will not run when transferred to a PA-RISC
1071.0 system.
2608e3b7 108
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109=head2 PA-RISC 1.0
110
111The original version of PA-RISC, HP no longer sells any system with this chip.
112
13e84f2c 113The following systems contained PA-RISC 1.0 chips:
f2a260d6 114
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115 600, 635, 645, 808, 815, 822, 825, 832, 834, 835, 840, 842, 845, 850,
116 852, 855, 860, 865, 870, 890
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117
118=head2 PA-RISC 1.1
119
120An upgrade to the PA-RISC design, it shipped for many years in many different
121system.
122
123The following systems contain with PA-RISC 1.1 chips:
124
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125 705, 710, 712, 715, 720, 722, 725, 728, 730, 735, 742, 743, 744, 745,
126 747, 750, 755, 770, 777, 778, 779, 800, 801, 803, 806, 807, 809, 811,
127 813, 816, 817, 819, 821, 826, 827, 829, 831, 837, 839, 841, 847, 849,
128 851, 856, 857, 859, 867, 869, 877, 887, 891, 892, 897, A180, A180C,
129 B115, B120, B132L, B132L+, B160L, B180L, C100, C110, C115, C120,
130 C160L, D200, D210, D220, D230, D250, D260, D310, D320, D330, D350,
131 D360, D410, DX0, DX5, DXO, E25, E35, E45, E55, F10, F20, F30, G30,
132 G40, G50, G60, G70, H20, H30, H40, H50, H60, H70, I30, I40, I50, I60,
133 I70, J200, J210, J210XC, K100, K200, K210, K220, K230, K400, K410,
134 K420, S700i, S715, S744, S760, T500, T520
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135
136=head2 PA-RISC 2.0
137
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138The most recent upgrade to the PA-RISC design, it added support for
13964-bit integer data.
f2a260d6 140
60ed1d8c 141As of the date of this document's last update, the following systems
d464cda8 142contain PA-RISC 2.0 chips:
f2a260d6 143
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144 700, 780, 781, 782, 783, 785, 802, 804, 810, 820, 861, 871, 879, 889,
145 893, 895, 896, 898, 899, A400, A500, B1000, B2000, C130, C140, C160,
146 C180, C180+, C180-XP, C200+, C400+, C3000, C360, C3600, CB260, D270,
147 D280, D370, D380, D390, D650, J220, J2240, J280, J282, J400, J410,
148 J5000, J5500XM, J5600, J7000, J7600, K250, K260, K260-EG, K270, K360,
149 K370, K380, K450, K460, K460-EG, K460-XP, K470, K570, K580, L1000,
150 L2000, L3000, N4000, R380, R390, SD16000, SD32000, SD64000, T540,
151 T600, V2000, V2200, V2250, V2500, V2600
1a4e8251 152
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153Just before HP took over Compaq, some systems were renamed. the link
154that contained the explanation is dead, so here's a short summary:
08c5bf6e 155
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156 HP 9000 A-Class servers, now renamed HP Server rp2400 series.
157 HP 9000 L-Class servers, now renamed HP Server rp5400 series.
158 HP 9000 N-Class servers, now renamed HP Server rp7400.
08c5bf6e 159
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160 rp2400, rp2405, rp2430, rp2450, rp2470, rp3410, rp3440, rp4440,
161 rp5400, rp5405, rp5430, rp5450, rp5470, rp7400, rp7405, rp7410,
162 rp7420, rp8400, rp8420, Superdome
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163
164The current naming convention is:
165
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166 aadddd
167 ||||`+- 00 - 99 relative capacity & newness (upgrades, etc.)
168 |||`--- unique number for each architecture to ensure different
169 ||| systems do not have the same numbering across
170 ||| architectures
171 ||`---- 1 - 9 identifies family and/or relative positioning
172 ||
173 |`----- c = ia32 (cisc)
174 | p = pa-risc
175 | x = ia-64 (Itanium & Itanium 2)
176 | h = housing
177 `------ t = tower
178 r = rack optimized
179 s = super scalable
180 b = blade
181 sa = appliance
13e84f2c 182
a83b6f46 183=head2 Itanium Processor Family and HP-UX
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184
185HP-UX also runs on the new Itanium processor. This requires the use
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186of a different version of HP-UX (currently 11.23 or 11i v1.6), and with
187the exception of a few differences detailed below and in later sections,
188Perl should compile with no problems.
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189
190Although PA-RISC binaries can run on Itanium systems, you should not
191attempt to use a PA-RISC version of Perl on an Itanium system. This is
192because shared libraries created on an Itanium system cannot be loaded
193while running a PA-RISC executable.
f2a260d6 194
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195=head2 Itanium & Itanium 2
196
197HP also ships servers with the 128-bit Itanium processor(s). As of the
198date of this document's last update, the following systems contain
199Itanium or Itanium 2 chips (this is very likely to be out of date):
200
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201 rx1600, rx1620, rx2600, rx2600hptc, rx2620, rx4610, rx4640, rx5670,
202 rx7620, rx8620, rx9610
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203
204To see all about your machine, type
205
206 # model
207 ia64 hp server rx2600
208 # /usr/contrib/bin/machinfo
209
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210=head2 Building Dynamic Extensions on HP-UX
211
212HP-UX supports dynamically loadable libraries (shared libraries).
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213Shared libraries end with the suffix .sl. On Itanium systems,
214they end with the suffix .so.
f2a260d6 215
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216Shared libraries created on a platform using a particular PA-RISC
217version are not usable on platforms using an earlier PA-RISC version by
218default. However, this backwards compatibility may be enabled using the
219same +DAportable compiler flag (with the same PA-RISC 1.0 caveat
220mentioned above).
f2a260d6 221
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222Shared libraries created on an Itanium platform cannot be loaded on
223a PA-RISC platform. Shared libraries created on a PA-RISC platform
224can only be loaded on an Itanium platform if it is a PA-RISC executable
225that is attempting to load the PA-RISC library. A PA-RISC shared
226library cannot be loaded into an Itanium executable nor vice-versa.
227
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228To create a shared library, the following steps must be performed:
229
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230 1. Compile source modules with +z or +Z flag to create a .o module
231 which contains Position-Independent Code (PIC). The linker will
232 tell you in the next step if +Z was needed.
233 (For gcc, the appropriate flag is -fpic or -fPIC.)
f2a260d6 234
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235 2. Link the shared library using the -b flag. If the code calls
236 any functions in other system libraries (e.g., libm), it must
237 be included on this line.
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238
239(Note that these steps are usually handled automatically by the extension's
240Makefile).
241
242If these dependent libraries are not listed at shared library creation
243time, you will get fatal "Unresolved symbol" errors at run time when the
244library is loaded.
245
a75f7dba 246You may create a shared library that refers to another library, which
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247may be either an archive library or a shared library. If this second
248library is a shared library, this is called a "dependent library". The
249dependent library's name is recorded in the main shared library, but it
250is not linked into the shared library. Instead, it is loaded when the
251main shared library is loaded. This can cause problems if you build an
252extension on one system and move it to another system where the
253libraries may not be located in the same place as on the first system.
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254
255If the referred library is an archive library, then it is treated as a
256simple collection of .o modules (all of which must contain PIC). These
257modules are then linked into the shared library.
258
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259Note that it is okay to create a library which contains a dependent
260library that is already linked into perl.
f2a260d6 261
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262Some extensions, like DB_File and Compress::Zlib use/require prebuilt
263libraries for the perl extensions/modules to work. If these libraries
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264are built using the default configuration, it might happen that you
265run into an error like "invalid loader fixup" during load phase.
266HP is aware of this problem. Search the HP-UX cxx-dev forums for
267discussions about the subject. The short answer is that B<everything>
268(all libraries, everything) must be compiled with C<+z> or C<+Z> to be
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269PIC (position independent code). (For gcc, that would be
270C<-fpic> or C<-fPIC>). In HP-UX 11.00 or newer the linker
3853ea39 271error message should tell the name of the offending object file.
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272
273A more general approach is to intervene manually, as with an example for
274the DB_File module, which requires SleepyCat's libdb.sl:
275
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276 # cd .../db-3.2.9/build_unix
277 # vi Makefile
278 ... add +Z to all cflags to create shared objects
279 CFLAGS= -c $(CPPFLAGS) +Z -Ae +O2 +Onolimit \
280 -I/usr/local/include -I/usr/include/X11R6
281 CXXFLAGS= -c $(CPPFLAGS) +Z -Ae +O2 +Onolimit \
282 -I/usr/local/include -I/usr/include/X11R6
283
284 # make clean
285 # make
286 # mkdir tmp
287 # cd tmp
288 # ar x ../libdb.a
289 # ld -b -o libdb-3.2.sl *.o
290 # mv libdb-3.2.sl /usr/local/lib
291 # rm *.o
292 # cd /usr/local/lib
293 # rm -f libdb.sl
294 # ln -s libdb-3.2.sl libdb.sl
295
296 # cd .../DB_File-1.76
297 # make distclean
298 # perl Makefile.PL
299 # make
300 # make test
301 # make install
302
303As of db-4.2.x it is no longer needed to do this by hand. Sleepycat
304has changed the configuration process to add +z on HP-UX automatically.
305
306 # cd .../db-4.2.25/build_unix
307 # env CFLAGS=+DA2.0w LDFLAGS=+DA2.0w ../dist/configure
308
309should work to generate 64bit shared libraries for HP-UX 11.00 and 11i.
42be3f00 310
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311It is no longer possible to link PA-RISC 1.0 shared libraries (even
312though the command-line flags are still present).
313
314PA-RISC and Itanium object files are not interchangeable. Although
315you may be able to use ar to create an archive library of PA-RISC
316object files on an Itanium system, you cannot link against it using
317an Itanium link editor.
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318
319=head2 The HP ANSI C Compiler
320
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321When using this compiler to build Perl, you should make sure that the
322flag -Aa is added to the cpprun and cppstdin variables in the config.sh
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323file (though see the section on 64-bit perl below). If you are using a
324recent version of the Perl distribution, these flags are set automatically.
f2a260d6 325
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326=head2 The GNU C Compiler
327
328When you are going to use the GNU C compiler (gcc), and you don't have
329gcc yet, you can either build it yourself from the sources (available
330from e.g. http://www.gnu.ai.mit.edu/software/gcc/releases.html) or fetch
331a prebuilt binary from the HP porting center. There are two places where
3a1825b5 332gcc prebuilds can be fetched; the first and best (for HP-UX 11 only) is
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333http://h21007.www2.hp.com/dspp/tech/tech_TechSoftwareDetailPage_IDX/1,1703,547,00.html
334the second is http://hpux.cs.utah.edu/hppd/hpux/Gnu/ where you can also
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335find the GNU binutils package. (Browse through the list, because there
336are often multiple versions of the same package available).
2be3a552 337
8df8c42b 338Above mentioned distributions are depots. H.Merijn Brand has made prebuilt
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339gcc binaries available on http://mirrors.develooper.com/hpux/ and/or
340http://www.cmve.net/~merijn/ for HP-UX 10.20, HP-UX 11.00, and HP-UX 11.11
341(HP-UX 11i) in both 32- and 64-bit versions. These are bzipped tar archives
342that also include recent GNU binutils and GNU gdb. Read the instructions
343on that page to rebuild gcc using itself.
344
345On PA-RISC you need a different compiler for 32-bit applications and for
34664-bit applications. On PA-RISC, 32-bit objects and 64-bit objects do
347not mix. period. There is no different behaviour for HP C-ANSI-C or GNU
348gcc. So if you require your perl binary to use 64-bit libraries, like
1d69df2b 349Oracle-64bit, you MUST build a 64-bit perl.
b20ef1a8 350
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351Building a 64-bit capable gcc on PA-RISC from source is possible only when
352you have the HP C-ANSI C compiler or an already working 64-bit binary of
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353gcc available. Best performance for perl is achieved with HP's native
354compiler.
2be3a552 355
a83b6f46 356=head2 Using Large Files with Perl on HP-UX
f2a260d6 357
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358Beginning with HP-UX version 10.20, files larger than 2GB (2^31 bytes)
359may be created and manipulated. Three separate methods of doing this
360are available. Of these methods, the best method for Perl is to compile
361using the -Duselargefiles flag to Configure. This causes Perl to be
362compiled using structures and functions in which these are 64 bits wide,
363rather than 32 bits wide. (Note that this will only work with HP's ANSI
364C compiler. If you want to compile Perl using gcc, you will have to get
aca48073 365a version of the compiler that supports 64-bit operations. See above for
f3e4a94e 366where to find it.)
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367
368There are some drawbacks to this approach. One is that any extension
369which calls any file-manipulating C function will need to be recompiled
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370(just follow the usual "perl Makefile.PL; make; make test; make install"
371procedure).
60ed1d8c 372
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373The list of functions that will need to recompiled is:
374creat, fgetpos, fopen,
375freopen, fsetpos, fstat,
376fstatvfs, fstatvfsdev, ftruncate,
377ftw, lockf, lseek,
378lstat, mmap, nftw,
379open, prealloc, stat,
380statvfs, statvfsdev, tmpfile,
381truncate, getrlimit, setrlimit
f2a260d6 382
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383Another drawback is only valid for Perl versions before 5.6.0. This
384drawback is that the seek and tell functions (both the builtin version
385and POSIX module version) will not perform correctly.
386
387It is strongly recommended that you use this flag when you run
388Configure. If you do not do this, but later answer the question about
389large files when Configure asks you, you may get a configuration that
390cannot be compiled, or that does not function as expected.
391
a83b6f46 392=head2 Threaded Perl on HP-UX
f2a260d6 393
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394It is possible to compile a version of threaded Perl on any version of
395HP-UX before 10.30, but it is strongly suggested that you be running on
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396HP-UX 11.00 at least.
397
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398To compile Perl with threads, add -Dusethreads to the arguments of
399Configure. Verify that the -D_POSIX_C_SOURCE=199506L compiler flag is
400automatically added to the list of flags. Also make sure that -lpthread
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401is listed before -lc in the list of libraries to link Perl with. The
402hints provided for HP-UX during Configure will try very hard to get
403this right for you.
f2a260d6 404
210b36aa 405HP-UX versions before 10.30 require a separate installation of a POSIX
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406threads library package. Two examples are the HP DCE package, available
407on "HP-UX Hardware Extensions 3.0, Install and Core OS, Release 10.20,
408April 1999 (B3920-13941)" or the Freely available PTH package, available
409though worldwide HP-UX mirrors of precompiled packages
37a78d01 410(e.g. http://hpux.tn.tudelft.nl/hppd/hpux/)
c7d9b096 411
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412If you are going to use the HP DCE package, the library used for threading
413is /usr/lib/libcma.sl, but there have been multiple updates of that
414library over time. Perl will build with the first version, but it
415will not pass the test suite. Older Oracle versions might be a compelling
8e4bcd96 416reason not to update that library, otherwise please find a newer version
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417in one of the following patches: PHSS_19739, PHSS_20608, or PHSS_23672
418
419reformatted output:
420
421 d3:/usr/lib 106 > what libcma-*.1
422 libcma-00000.1:
423 HP DCE/9000 1.5 Module: libcma.sl (Export)
424 Date: Apr 29 1996 22:11:24
425 libcma-19739.1:
426 HP DCE/9000 1.5 PHSS_19739-40 Module: libcma.sl (Export)
427 Date: Sep 4 1999 01:59:07
428 libcma-20608.1:
429 HP DCE/9000 1.5 PHSS_20608 Module: libcma.1 (Export)
430 Date: Dec 8 1999 18:41:23
431 libcma-23672.1:
432 HP DCE/9000 1.5 PHSS_23672 Module: libcma.1 (Export)
433 Date: Apr 9 2001 10:01:06
434 d3:/usr/lib 107 >
435
436
a83b6f46 437=head2 64-bit Perl on HP-UX
f2a260d6 438
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439Beginning with HP-UX 11.00, programs compiled under HP-UX can take
440advantage of the LP64 programming environment (LP64 means Longs and
441Pointers are 64 bits wide).
f2a260d6 442
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443Work is being performed on Perl to make it 64-bit compliant on all
444versions of Unix. Once this is complete, scalar variables will be able
445to hold numbers larger than 2^32 with complete precision.
f2a260d6 446
70dff5ba 447As of the date of this document, Perl is fully 64-bit compliant on
b20ef1a8 448HP-UX 11.00 and up for both cc- and gcc builds. If you are about to
1d69df2b 449build a 64-bit perl with GNU gcc, please read the gcc section carefully.
f2a260d6 450
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451Should a user wish to experiment with compiling Perl in the LP64
452environment, use the -Duse64bitall flag to Configure. This will force
b20ef1a8 453Perl to be compiled in a pure LP64 environment (with the +DD64 flag for
1d69df2b 454HP C-ANSI-C, with no additional options for GNU gcc 64-bit on PA-RISC,
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455and with -mlp64 for GNU gcc on Itanium).
456If you want to compile Perl using gcc, you will have to get a version of
aca48073 457the compiler that supports 64-bit operations.)
f74a9bd3 458
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459You can also use the -Duse64bitint flag to Configure. Although there
460are some minor differences between compiling Perl with this flag versus
461the -Duse64bitall flag, they should not be noticeable from a Perl user's
462perspective.
f74a9bd3 463
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464In both cases, it is strongly recommended that you use these flags when
465you run Configure. If you do not use do this, but later answer the
466questions about 64-bit numbers when Configure asks you, you may get a
467configuration that cannot be compiled, or that does not function as
468expected.
f74a9bd3 469
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470=head2 Oracle on HP-UX
471
472Using perl to connect to Oracle databases through DBI and DBD::Oracle
473has caused a lot of people many headaches. Read README.hpux in the
474DBD::Oracle for much more information. The reason to mention it here
475is that Oracle requires a perl built with libcl and libpthread, the
476latter even when perl is build without threads. Building perl using
477all defaults, but still enabling to build DBD::Oracle later on can be
478achieved using
479
480 Configure -A prepend:libswanted='cl pthread ' ...
481
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482Do not forget the space before the trailing quote.
483
484Also note that this does not (yet) work with all configurations,
1d69df2b 485it is known to fail with 64-bit versions of GCC.
5df8692c 486
a83b6f46 487=head2 GDBM and Threads on HP-UX
d66be8f9 488
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489If you attempt to compile Perl with threads on an 11.X system and also
490link in the GDBM library, then Perl will immediately core dump when it
491starts up. The only workaround at this point is to relink the GDBM
492library under 11.X, then relink it into Perl.
d66be8f9 493
a83b6f46 494=head2 NFS filesystems and utime(2) on HP-UX
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495
496If you are compiling Perl on a remotely-mounted NFS filesystem, the test
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497io/fs.t may fail on test #18. This appears to be a bug in HP-UX and no
498fix is currently available.
d66be8f9 499
a83b6f46 500=head2 perl -P and // and HP-UX
183968aa 501
b20ef1a8 502If HP-UX Perl is compiled with flags that will cause problems if the
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503-P flag of Perl (preprocess Perl code with the C preprocessor before
504perl sees it) is used. The problem is that C<//>, being a C++-style
505until-end-of-line comment, will disappear along with the remainder
506of the line. This means that common Perl constructs like
507
af8e01f2 508 s/foo//;
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509
510will turn into illegal code
511
af8e01f2 512 s/foo
183968aa 513
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514The workaround is to use some other quoting separator than C<"/">,
515like for example C<"!">:
183968aa 516
af8e01f2 517 s!foo!!;
183968aa 518
a83b6f46 519=head2 HP-UX Kernel Parameters (maxdsiz) for Compiling Perl
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520
521By default, HP-UX comes configured with a maximum data segment size of
52264MB. This is too small to correctly compile Perl with the maximum
523optimization levels. You can increase the size of the maxdsiz kernel
524parameter through the use of SAM.
525
526When using the GUI version of SAM, click on the Kernel Configuration
527icon, then the Configurable Parameters icon. Scroll down and select
528the maxdsiz line. From the Actions menu, select the Modify Configurable
529Parameter item. Insert the new formula into the Formula/Value box.
530Then follow the instructions to rebuild your kernel and reboot your
531system.
532
533In general, a value of 256MB (or "256*1024*1024") is sufficient for
534Perl to compile at maximum optimization.
535
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536=head1 nss_delete core dump from op/pwent or op/grent
537
538You may get a bus error core dump from the op/pwent or op/grent
539tests. If compiled with -g you will see a stack trace much like
540the following:
541
542 #0 0xc004216c in () from /usr/lib/libc.2
543 #1 0xc00d7550 in __nss_src_state_destr () from /usr/lib/libc.2
544 #2 0xc00d7768 in __nss_src_state_destr () from /usr/lib/libc.2
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545 #3 0xc00d78a8 in nss_delete () from /usr/lib/libc.2
546 #4 0xc01126d8 in endpwent () from /usr/lib/libc.2
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547 #5 0xd1950 in Perl_pp_epwent () from ./perl
548 #6 0x94d3c in Perl_runops_standard () from ./perl
549 #7 0x23728 in S_run_body () from ./perl
550 #8 0x23428 in perl_run () from ./perl
551 #9 0x2005c in main () from ./perl
552
553The key here is the C<nss_delete> call. One workaround for this
554bug seems to be to create add to the file F</etc/nsswitch.conf>
555(at least) the following lines
556
48529397 557 group: files
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558 passwd: files
559
560Whether you are using NIS does not matter. Amazingly enough,
3a1825b5 561the same bug also affects Solaris.
1081c3b9 562
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563=head1 AUTHOR
564
565Jeff Okamoto <okamoto@corp.hp.com>
fa01be49 566H.Merijn Brand <h.m.brand@hccnet.nl>
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567
568With much assistance regarding shared libraries from Marc Sabatella.
569
570=head1 DATE
571
c13c65c5 572Version 0.7.2: 2004-12-06
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573
574=cut