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Merged duplicate info about GDBM/threads on HP-UX 11
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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
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17Application release September 2001, HP-UX 11.00 is the first to ship
18with Perl. By the time it was perl-5.6.1 in /opt/perl. The first
19occurrence is on CD 5012-7954 and can be installed using
c3c48d5c 20
af8e01f2 21 swinstall -s /cdrom perl
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22
23assuming you have mounted that CD on /cdrom. In this version the
7cd31a2a 24following modules were installed:
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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
c3c48d5c 34
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35That build was a portable hppa-1.1 multithread build that supports large
36files compiled with gcc-2.9-hppa-991112.
c3c48d5c 37
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38If you perform a new installation, then (a newer) Perl will be installed
39automatically. Preinstalled HP-UX systems now slao have more recent versions
40of Perl and the updated modules.
c3c48d5c 41
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42The official (threaded) builds from HP, as they are shipped on the
43Application DVD/CD's are available on
44http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/displayProductInfo.pl?productNumber=PERL
45for both PA-RISC and IPF (Itanium Processor Family). They are built
46with the HP ANSI-C compiler.
7cd31a2a 47
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48=head2 Using perl from HP's porting centre
49
50HP porting centre tries very hard to keep up with customer demand and
51release updates from the Open Source community. Having precompiled
52Perl binaries available is obvious.
53
54The HP porting centres are limited in what systems they are allowed
55to port to and they usually choose the two most recent OS versions
56available. This means that at the moment of writing, there are only
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57HP-UX 11.11 (pa-risc 2.0) and HP-UX 11.23 (Itanium 2) ports available
58on the porting centres.
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59
60HP has asked the porting centre to move Open Source binaries
61from /opt to /usr/local, so binaries produced since the start
62of July 2002 are located in /usr/local.
63
64One of HP porting centres URL's is http://hpux.connect.org.uk/
65The port currently available is built with GNU gcc.
66
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67=head2 Compiling Perl 5 on HP-UX
68
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69When compiling Perl, you must use an ANSI C compiler. The C compiler
70that ships with all HP-UX systems is a K&R compiler that should only be
71used to build new kernels.
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72
73Perl can be compiled with either HP's ANSI C compiler or with gcc. The
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74former is recommended, as not only can it compile Perl with no
75difficulty, but also can take advantage of features listed later that
76require the use of HP compiler-specific command-line flags.
f2a260d6 77
60ed1d8c 78If you decide to use gcc, make sure your installation is recent and
b48c3bfb 79complete, and be sure to read the Perl INSTALL file for more gcc-specific
60ed1d8c 80details.
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81
82=head2 PA-RISC
83
c8fb9d34 84HP's HP9000 Unix systems run on HP's own Precision Architecture
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85(PA-RISC) chip. HP-UX used to run on the Motorola MC68000 family of
86chips, but any machine with this chip in it is quite obsolete and this
87document will not attempt to address issues for compiling Perl on the
88Motorola chipset.
f2a260d6 89
60ed1d8c 90The most recent version of PA-RISC at the time of this document's last
7cd31a2a 91update is 2.0. HP PA-RISC systems are usually refered to with model
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92description "HP 9000". The last CPU in this series is the PA-8900.
93Support for PA-RISC architectured machines officially ends as shown
94in the following table:
95
96 PA-RISC End-of-Life Roadmap
97 +--------+----------------+----------------+-----------------+
98 | HP9000 | Superdome | PA-8700 | Spring 2011 |
99 | 4-128 | | PA-8800/sx1000 | Summer 2012 |
100 | cores | | PA-8900/sx1000 | 2014 |
101 | | | PA-8900/sx2000 | 2015 |
102 +--------+----------------+----------------+-----------------+
103 | HP9000 | rp7410, rp8400 | PA-8700 | Spring 2011 |
104 | 2-32 | rp7420, rp8420 | PA-8800/sx1000 | 2012 |
105 | cores | rp7440, rp8440 | PA-8900/sx1000 | Autumn 2013 |
106 | | | PA-8900/sx2000 | 2015 |
107 +--------+----------------+----------------+-----------------+
108 | HP9000 | rp44x0 | PA-8700 | Spring 2011 |
109 | 1-8 | | PA-8800/rp44x0 | 2012 |
110 | cores | | PA-8900/rp44x0 | 2014 |
111 +--------+----------------+----------------+-----------------+
112 | HP9000 | rp34x0 | PA-8700 | Spring 2011 |
113 | 1-4 | | PA-8800/rp34x0 | 2012 |
114 | cores | | PA-8900/rp34x0 | 2014 |
115 +--------+----------------+----------------+-----------------+
f2a260d6 116
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117A complete list of models at the time the OS was built is in the file
118/usr/sam/lib/mo/sched.models. The first column corresponds to the last
119part of the output of the "model" command. The second column is the
120PA-RISC version and the third column is the exact chip type used.
121(Start browsing at the bottom to prevent confusion ;-)
122
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123 # model
124 9000/800/L1000-44
125 # grep L1000-44 /usr/sam/lib/mo/sched.models
126 L1000-44 2.0 PA8500
127
128=head2 Portability Between PA-RISC Versions
129
130An executable compiled on a PA-RISC 2.0 platform will not execute on a
131PA-RISC 1.1 platform, even if they are running the same version of
132HP-UX. If you are building Perl on a PA-RISC 2.0 platform and want that
133Perl to also run on a PA-RISC 1.1, the compiler flags +DAportable and
134+DS32 should be used.
135
136It is no longer possible to compile PA-RISC 1.0 executables on either
137the PA-RISC 1.1 or 2.0 platforms. The command-line flags are accepted,
138but the resulting executable will not run when transferred to a PA-RISC
1391.0 system.
2608e3b7 140
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141=head2 PA-RISC 1.0
142
143The original version of PA-RISC, HP no longer sells any system with this chip.
144
13e84f2c 145The following systems contained PA-RISC 1.0 chips:
f2a260d6 146
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147 600, 635, 645, 808, 815, 822, 825, 832, 834, 835, 840, 842, 845, 850,
148 852, 855, 860, 865, 870, 890
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149
150=head2 PA-RISC 1.1
151
152An upgrade to the PA-RISC design, it shipped for many years in many different
153system.
154
155The following systems contain with PA-RISC 1.1 chips:
156
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157 705, 710, 712, 715, 720, 722, 725, 728, 730, 735, 742, 743, 744, 745,
158 747, 750, 755, 770, 777, 778, 779, 800, 801, 803, 806, 807, 809, 811,
159 813, 816, 817, 819, 821, 826, 827, 829, 831, 837, 839, 841, 847, 849,
160 851, 856, 857, 859, 867, 869, 877, 887, 891, 892, 897, A180, A180C,
161 B115, B120, B132L, B132L+, B160L, B180L, C100, C110, C115, C120,
162 C160L, D200, D210, D220, D230, D250, D260, D310, D320, D330, D350,
163 D360, D410, DX0, DX5, DXO, E25, E35, E45, E55, F10, F20, F30, G30,
164 G40, G50, G60, G70, H20, H30, H40, H50, H60, H70, I30, I40, I50, I60,
165 I70, J200, J210, J210XC, K100, K200, K210, K220, K230, K400, K410,
166 K420, S700i, S715, S744, S760, T500, T520
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167
168=head2 PA-RISC 2.0
169
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170The most recent upgrade to the PA-RISC design, it added support for
17164-bit integer data.
f2a260d6 172
60ed1d8c 173As of the date of this document's last update, the following systems
d464cda8 174contain PA-RISC 2.0 chips:
f2a260d6 175
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176 700, 780, 781, 782, 783, 785, 802, 804, 810, 820, 861, 871, 879, 889,
177 893, 895, 896, 898, 899, A400, A500, B1000, B2000, C130, C140, C160,
178 C180, C180+, C180-XP, C200+, C400+, C3000, C360, C3600, CB260, D270,
179 D280, D370, D380, D390, D650, J220, J2240, J280, J282, J400, J410,
180 J5000, J5500XM, J5600, J7000, J7600, K250, K260, K260-EG, K270, K360,
181 K370, K380, K450, K460, K460-EG, K460-XP, K470, K570, K580, L1000,
182 L2000, L3000, N4000, R380, R390, SD16000, SD32000, SD64000, T540,
183 T600, V2000, V2200, V2250, V2500, V2600
1a4e8251 184
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185Just before HP took over Compaq, some systems were renamed. the link
186that contained the explanation is dead, so here's a short summary:
08c5bf6e 187
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188 HP 9000 A-Class servers, now renamed HP Server rp2400 series.
189 HP 9000 L-Class servers, now renamed HP Server rp5400 series.
190 HP 9000 N-Class servers, now renamed HP Server rp7400.
08c5bf6e 191
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192 rp2400, rp2405, rp2430, rp2450, rp2470, rp3410, rp3440, rp4410,
193 rp4440, rp5400, rp5405, rp5430, rp5450, rp5470, rp7400, rp7405,
c8fb9d34 194 rp7410, rp7420, rp7440, rp8400, rp8420, rp8440, Superdome
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195
196The current naming convention is:
197
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198 aadddd
199 ||||`+- 00 - 99 relative capacity & newness (upgrades, etc.)
200 |||`--- unique number for each architecture to ensure different
201 ||| systems do not have the same numbering across
202 ||| architectures
203 ||`---- 1 - 9 identifies family and/or relative positioning
204 ||
205 |`----- c = ia32 (cisc)
206 | p = pa-risc
207 | x = ia-64 (Itanium & Itanium 2)
208 | h = housing
209 `------ t = tower
210 r = rack optimized
211 s = super scalable
212 b = blade
213 sa = appliance
13e84f2c 214
c8fb9d34 215=head2 Itanium Processor Family (IPF) and HP-UX
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216
217HP-UX also runs on the new Itanium processor. This requires the use
7cd31a2a 218of a different version of HP-UX (currently 11.23 or 11i v2), and with
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219the exception of a few differences detailed below and in later sections,
220Perl should compile with no problems.
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221
222Although PA-RISC binaries can run on Itanium systems, you should not
223attempt to use a PA-RISC version of Perl on an Itanium system. This is
224because shared libraries created on an Itanium system cannot be loaded
225while running a PA-RISC executable.
f2a260d6 226
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227HP Itanium 2 systems are usually refered to with model description
228"HP Integrity".
229
3e098ebc 230=head2 Itanium, Itanium 2 & Madison 6
af8e01f2 231
c8fb9d34 232HP also ships servers with the 128-bit Itanium processor(s). The cx26x0
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233is told to have Madison 6. As of the date of this document's last update,
234the following systems contain Itanium or Itanium 2 chips (this is likely
235to be out of date):
af8e01f2 236
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237 BL60p, BL860c, cx2600, cx2620, rx1600, rx1620, rx2600, rx2600hptc,
238 rx2620, rx2660, rx3600, rx4610, rx4640, rx5670, rx6600, rx7420,
239 rx7620, rx7640, rx8420, rx8620, rx8640, rx9610, sx1000, sx2000
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240
241To see all about your machine, type
242
243 # model
244 ia64 hp server rx2600
245 # /usr/contrib/bin/machinfo
246
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247=head2 Building Dynamic Extensions on HP-UX
248
249HP-UX supports dynamically loadable libraries (shared libraries).
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250Shared libraries end with the suffix .sl. On Itanium systems,
251they end with the suffix .so.
f2a260d6 252
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253Shared libraries created on a platform using a particular PA-RISC
254version are not usable on platforms using an earlier PA-RISC version by
255default. However, this backwards compatibility may be enabled using the
256same +DAportable compiler flag (with the same PA-RISC 1.0 caveat
257mentioned above).
f2a260d6 258
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259Shared libraries created on an Itanium platform cannot be loaded on
260a PA-RISC platform. Shared libraries created on a PA-RISC platform
261can only be loaded on an Itanium platform if it is a PA-RISC executable
262that is attempting to load the PA-RISC library. A PA-RISC shared
263library cannot be loaded into an Itanium executable nor vice-versa.
264
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265To create a shared library, the following steps must be performed:
266
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267 1. Compile source modules with +z or +Z flag to create a .o module
268 which contains Position-Independent Code (PIC). The linker will
269 tell you in the next step if +Z was needed.
270 (For gcc, the appropriate flag is -fpic or -fPIC.)
f2a260d6 271
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272 2. Link the shared library using the -b flag. If the code calls
273 any functions in other system libraries (e.g., libm), it must
274 be included on this line.
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275
276(Note that these steps are usually handled automatically by the extension's
277Makefile).
278
279If these dependent libraries are not listed at shared library creation
280time, you will get fatal "Unresolved symbol" errors at run time when the
281library is loaded.
282
a75f7dba 283You may create a shared library that refers to another library, which
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284may be either an archive library or a shared library. If this second
285library is a shared library, this is called a "dependent library". The
286dependent library's name is recorded in the main shared library, but it
287is not linked into the shared library. Instead, it is loaded when the
288main shared library is loaded. This can cause problems if you build an
289extension on one system and move it to another system where the
290libraries may not be located in the same place as on the first system.
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291
292If the referred library is an archive library, then it is treated as a
293simple collection of .o modules (all of which must contain PIC). These
294modules are then linked into the shared library.
295
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296Note that it is okay to create a library which contains a dependent
297library that is already linked into perl.
f2a260d6 298
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299Some extensions, like DB_File and Compress::Zlib use/require prebuilt
300libraries for the perl extensions/modules to work. If these libraries
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301are built using the default configuration, it might happen that you
302run into an error like "invalid loader fixup" during load phase.
303HP is aware of this problem. Search the HP-UX cxx-dev forums for
304discussions about the subject. The short answer is that B<everything>
305(all libraries, everything) must be compiled with C<+z> or C<+Z> to be
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306PIC (position independent code). (For gcc, that would be
307C<-fpic> or C<-fPIC>). In HP-UX 11.00 or newer the linker
3853ea39 308error message should tell the name of the offending object file.
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309
310A more general approach is to intervene manually, as with an example for
311the DB_File module, which requires SleepyCat's libdb.sl:
312
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313 # cd .../db-3.2.9/build_unix
314 # vi Makefile
315 ... add +Z to all cflags to create shared objects
316 CFLAGS= -c $(CPPFLAGS) +Z -Ae +O2 +Onolimit \
c8fb9d34 317 -I/usr/local/include -I/usr/include/X11R6
af8e01f2 318 CXXFLAGS= -c $(CPPFLAGS) +Z -Ae +O2 +Onolimit \
c8fb9d34 319 -I/usr/local/include -I/usr/include/X11R6
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320
321 # make clean
322 # make
323 # mkdir tmp
324 # cd tmp
325 # ar x ../libdb.a
326 # ld -b -o libdb-3.2.sl *.o
327 # mv libdb-3.2.sl /usr/local/lib
328 # rm *.o
329 # cd /usr/local/lib
330 # rm -f libdb.sl
331 # ln -s libdb-3.2.sl libdb.sl
332
333 # cd .../DB_File-1.76
334 # make distclean
335 # perl Makefile.PL
336 # make
337 # make test
338 # make install
339
340As of db-4.2.x it is no longer needed to do this by hand. Sleepycat
341has changed the configuration process to add +z on HP-UX automatically.
342
343 # cd .../db-4.2.25/build_unix
6a555251 344 # env CFLAGS=+DD64 LDFLAGS=+DD64 ../dist/configure
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345
346should work to generate 64bit shared libraries for HP-UX 11.00 and 11i.
42be3f00 347
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348It is no longer possible to link PA-RISC 1.0 shared libraries (even
349though the command-line flags are still present).
350
351PA-RISC and Itanium object files are not interchangeable. Although
352you may be able to use ar to create an archive library of PA-RISC
353object files on an Itanium system, you cannot link against it using
354an Itanium link editor.
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355
356=head2 The HP ANSI C Compiler
357
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358When using this compiler to build Perl, you should make sure that the
359flag -Aa is added to the cpprun and cppstdin variables in the config.sh
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360file (though see the section on 64-bit perl below). If you are using a
361recent version of the Perl distribution, these flags are set automatically.
f2a260d6 362
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363Even though HP-UX 10.20 and 11.00 are not actively maintained by HP
364anymore, updates for the HP ANSI C compiler are still available from
365time to time, and it might be advisable to see if updates are applicable.
366At the moment of writing, the latests available patches for 11.00 that
367should be applied are PHSS_35098, PHSS_35175, PHSS_35100, PHSS_33036,
368and PHSS_33902). If you have a SUM account, you can use it to search
369for updates/patches. Enter "ANSI" as keyword.
370
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371=head2 The GNU C Compiler
372
373When you are going to use the GNU C compiler (gcc), and you don't have
374gcc yet, you can either build it yourself from the sources (available
375from e.g. http://www.gnu.ai.mit.edu/software/gcc/releases.html) or fetch
376a prebuilt binary from the HP porting center. There are two places where
3a1825b5 377gcc prebuilds can be fetched; the first and best (for HP-UX 11 only) is
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378http://h21007.www2.hp.com/dspp/tech/tech_TechSoftwareDetailPage_IDX/1,1703,547,00.html
379the second is http://hpux.cs.utah.edu/hppd/hpux/Gnu/ where you can also
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380find the GNU binutils package. (Browse through the list, because there
381are often multiple versions of the same package available).
2be3a552 382
8df8c42b 383Above mentioned distributions are depots. H.Merijn Brand has made prebuilt
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384gcc binaries available on http://mirrors.develooper.com/hpux/ and/or
385http://www.cmve.net/~merijn/ for HP-UX 10.20, HP-UX 11.00, and HP-UX 11.11
386(HP-UX 11i) in both 32- and 64-bit versions. These are bzipped tar archives
387that also include recent GNU binutils and GNU gdb. Read the instructions
388on that page to rebuild gcc using itself.
389
390On PA-RISC you need a different compiler for 32-bit applications and for
39164-bit applications. On PA-RISC, 32-bit objects and 64-bit objects do
fb1ee0ec 392not mix. Period. There is no different behaviour for HP C-ANSI-C or GNU
b20ef1a8 393gcc. So if you require your perl binary to use 64-bit libraries, like
1d69df2b 394Oracle-64bit, you MUST build a 64-bit perl.
b20ef1a8 395
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396Building a 64-bit capable gcc on PA-RISC from source is possible only when
397you have the HP C-ANSI C compiler or an already working 64-bit binary of
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398gcc available. Best performance for perl is achieved with HP's native
399compiler.
2be3a552 400
a83b6f46 401=head2 Using Large Files with Perl on HP-UX
f2a260d6 402
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403Beginning with HP-UX version 10.20, files larger than 2GB (2^31 bytes)
404may be created and manipulated. Three separate methods of doing this
405are available. Of these methods, the best method for Perl is to compile
406using the -Duselargefiles flag to Configure. This causes Perl to be
407compiled using structures and functions in which these are 64 bits wide,
408rather than 32 bits wide. (Note that this will only work with HP's ANSI
409C compiler. If you want to compile Perl using gcc, you will have to get
aca48073 410a version of the compiler that supports 64-bit operations. See above for
f3e4a94e 411where to find it.)
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412
413There are some drawbacks to this approach. One is that any extension
414which calls any file-manipulating C function will need to be recompiled
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415(just follow the usual "perl Makefile.PL; make; make test; make install"
416procedure).
60ed1d8c 417
d66be8f9 418The list of functions that will need to recompiled is:
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419 creat, fgetpos, fopen,
420 freopen, fsetpos, fstat,
421 fstatvfs, fstatvfsdev, ftruncate,
422 ftw, lockf, lseek,
423 lstat, mmap, nftw,
424 open, prealloc, stat,
425 statvfs, statvfsdev, tmpfile,
426 truncate, getrlimit, setrlimit
f2a260d6 427
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428Another drawback is only valid for Perl versions before 5.6.0. This
429drawback is that the seek and tell functions (both the builtin version
430and POSIX module version) will not perform correctly.
431
432It is strongly recommended that you use this flag when you run
433Configure. If you do not do this, but later answer the question about
434large files when Configure asks you, you may get a configuration that
435cannot be compiled, or that does not function as expected.
436
a83b6f46 437=head2 Threaded Perl on HP-UX
f2a260d6 438
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439It is possible to compile a version of threaded Perl on any version of
440HP-UX before 10.30, but it is strongly suggested that you be running on
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441HP-UX 11.00 at least.
442
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443To compile Perl with threads, add -Dusethreads to the arguments of
444Configure. Verify that the -D_POSIX_C_SOURCE=199506L compiler flag is
445automatically added to the list of flags. Also make sure that -lpthread
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446is listed before -lc in the list of libraries to link Perl with. The
447hints provided for HP-UX during Configure will try very hard to get
448this right for you.
f2a260d6 449
210b36aa 450HP-UX versions before 10.30 require a separate installation of a POSIX
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451threads library package. Two examples are the HP DCE package, available
452on "HP-UX Hardware Extensions 3.0, Install and Core OS, Release 10.20,
453April 1999 (B3920-13941)" or the Freely available PTH package, available
2d99a181 454on H.Merijn's site (http://mirrors.develooper.com/hpux/).
c7d9b096 455
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456If you are going to use the HP DCE package, the library used for threading
457is /usr/lib/libcma.sl, but there have been multiple updates of that
458library over time. Perl will build with the first version, but it
459will not pass the test suite. Older Oracle versions might be a compelling
8e4bcd96 460reason not to update that library, otherwise please find a newer version
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461in one of the following patches: PHSS_19739, PHSS_20608, or PHSS_23672
462
463reformatted output:
464
465 d3:/usr/lib 106 > what libcma-*.1
466 libcma-00000.1:
467 HP DCE/9000 1.5 Module: libcma.sl (Export)
468 Date: Apr 29 1996 22:11:24
469 libcma-19739.1:
470 HP DCE/9000 1.5 PHSS_19739-40 Module: libcma.sl (Export)
471 Date: Sep 4 1999 01:59:07
472 libcma-20608.1:
473 HP DCE/9000 1.5 PHSS_20608 Module: libcma.1 (Export)
474 Date: Dec 8 1999 18:41:23
475 libcma-23672.1:
476 HP DCE/9000 1.5 PHSS_23672 Module: libcma.1 (Export)
477 Date: Apr 9 2001 10:01:06
478 d3:/usr/lib 107 >
479
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480If you choose for the PTH package, use swinstall to install pth in
481the default location (/opt/pth), and then make symbolic links to the
482libraries from /usr/lib
483
484 # cd /usr/lib
485 # ln -s /opt/pth/lib/libpth* .
486
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487For building perl to support Oracle, it needs to be linked with libcl
488and libpthread. So even if your perl is an unthreaded build, these
489libraries might be required. See "Oracle on HP-UX" below.
fa01be49 490
a83b6f46 491=head2 64-bit Perl on HP-UX
f2a260d6 492
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493Beginning with HP-UX 11.00, programs compiled under HP-UX can take
494advantage of the LP64 programming environment (LP64 means Longs and
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495Pointers are 64 bits wide), in which scalar variables will be able
496to hold numbers larger than 2^32 with complete precision. Perl has
497proven to be consistent and reliable in 64bit mode since 5.8.1 on
498all HP-UX 11.xx.
f2a260d6 499
70dff5ba 500As of the date of this document, Perl is fully 64-bit compliant on
b20ef1a8 501HP-UX 11.00 and up for both cc- and gcc builds. If you are about to
1d69df2b 502build a 64-bit perl with GNU gcc, please read the gcc section carefully.
f2a260d6 503
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504Should a user have the need for compiling Perl in the LP64 environment,
505use the -Duse64bitall flag to Configure. This will force Perl to be
506compiled in a pure LP64 environment (with the +DD64 flag for HP C-ANSI-C,
507with no additional options for GNU gcc 64-bit on PA-RISC, and with
508-mlp64 for GNU gcc on Itanium).
b20ef1a8 509If you want to compile Perl using gcc, you will have to get a version of
aca48073 510the compiler that supports 64-bit operations.)
f74a9bd3 511
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512You can also use the -Duse64bitint flag to Configure. Although there
513are some minor differences between compiling Perl with this flag versus
514the -Duse64bitall flag, they should not be noticeable from a Perl user's
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515perspective. When configuring -Duse64bitint using a 64bit gcc on a
516pa-risc architecture, -Duse64bitint is silently promoted to -Duse64bitall.
f74a9bd3 517
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518In both cases, it is strongly recommended that you use these flags when
519you run Configure. If you do not use do this, but later answer the
520questions about 64-bit numbers when Configure asks you, you may get a
521configuration that cannot be compiled, or that does not function as
522expected.
f74a9bd3 523
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524=head2 Oracle on HP-UX
525
526Using perl to connect to Oracle databases through DBI and DBD::Oracle
527has caused a lot of people many headaches. Read README.hpux in the
528DBD::Oracle for much more information. The reason to mention it here
529is that Oracle requires a perl built with libcl and libpthread, the
530latter even when perl is build without threads. Building perl using
531all defaults, but still enabling to build DBD::Oracle later on can be
532achieved using
533
534 Configure -A prepend:libswanted='cl pthread ' ...
535
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536Do not forget the space before the trailing quote.
537
538Also note that this does not (yet) work with all configurations,
1d69df2b 539it is known to fail with 64-bit versions of GCC.
5df8692c 540
a83b6f46 541=head2 GDBM and Threads on HP-UX
d66be8f9 542
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543If you attempt to compile Perl with (POSIX) threads on an 11.X system
544and also link in the GDBM library, then Perl will immediately core dump
545when it starts up. The only workaround at this point is to relink the
546GDBM library under 11.X, then relink it into Perl.
547
548the error might show something like:
549
550Pthread internal error: message: __libc_reinit() failed, file: ../pthreads/pthread.c, line: 1096
551Return Pointer is 0xc082bf33
552sh: 5345 Quit(coredump)
553
554and Configure will give up.
d66be8f9 555
a83b6f46 556=head2 NFS filesystems and utime(2) on HP-UX
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557
558If you are compiling Perl on a remotely-mounted NFS filesystem, the test
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559io/fs.t may fail on test #18. This appears to be a bug in HP-UX and no
560fix is currently available.
d66be8f9 561
a83b6f46 562=head2 perl -P and // and HP-UX
183968aa 563
b20ef1a8 564If HP-UX Perl is compiled with flags that will cause problems if the
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565-P flag of Perl (preprocess Perl code with the C preprocessor before
566perl sees it) is used. The problem is that C<//>, being a C++-style
567until-end-of-line comment, will disappear along with the remainder
568of the line. This means that common Perl constructs like
569
af8e01f2 570 s/foo//;
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571
572will turn into illegal code
573
af8e01f2 574 s/foo
183968aa 575
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576The workaround is to use some other quoting separator than C<"/">,
577like for example C<"!">:
183968aa 578
af8e01f2 579 s!foo!!;
183968aa 580
a83b6f46 581=head2 HP-UX Kernel Parameters (maxdsiz) for Compiling Perl
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582
583By default, HP-UX comes configured with a maximum data segment size of
58464MB. This is too small to correctly compile Perl with the maximum
585optimization levels. You can increase the size of the maxdsiz kernel
586parameter through the use of SAM.
587
588When using the GUI version of SAM, click on the Kernel Configuration
589icon, then the Configurable Parameters icon. Scroll down and select
590the maxdsiz line. From the Actions menu, select the Modify Configurable
591Parameter item. Insert the new formula into the Formula/Value box.
592Then follow the instructions to rebuild your kernel and reboot your
593system.
594
595In general, a value of 256MB (or "256*1024*1024") is sufficient for
596Perl to compile at maximum optimization.
597
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598=head1 nss_delete core dump from op/pwent or op/grent
599
600You may get a bus error core dump from the op/pwent or op/grent
601tests. If compiled with -g you will see a stack trace much like
602the following:
603
604 #0 0xc004216c in () from /usr/lib/libc.2
605 #1 0xc00d7550 in __nss_src_state_destr () from /usr/lib/libc.2
606 #2 0xc00d7768 in __nss_src_state_destr () from /usr/lib/libc.2
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607 #3 0xc00d78a8 in nss_delete () from /usr/lib/libc.2
608 #4 0xc01126d8 in endpwent () from /usr/lib/libc.2
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609 #5 0xd1950 in Perl_pp_epwent () from ./perl
610 #6 0x94d3c in Perl_runops_standard () from ./perl
611 #7 0x23728 in S_run_body () from ./perl
612 #8 0x23428 in perl_run () from ./perl
613 #9 0x2005c in main () from ./perl
614
615The key here is the C<nss_delete> call. One workaround for this
616bug seems to be to create add to the file F</etc/nsswitch.conf>
617(at least) the following lines
618
48529397 619 group: files
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620 passwd: files
621
622Whether you are using NIS does not matter. Amazingly enough,
3a1825b5 623the same bug also affects Solaris.
1081c3b9 624
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625=head1 AUTHOR
626
627Jeff Okamoto <okamoto@corp.hp.com>
3bd76f0a 628H.Merijn Brand <h.m.brand@xs4all.nl>
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629
630With much assistance regarding shared libraries from Marc Sabatella.
631
632=head1 DATE
633
c8fb9d34 634Version 0.7.9: 2007-03-14
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635
636=cut