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1 | If you read this file _as_is_, just ignore the funny characters you see. |
2 | It is written in the POD format (see pod/perlpod.pod) which is specially |
3 | designed to be readable as is. |
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4 | |
5 | =head1 NAME |
6 | |
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7 | README.hpux - Perl version 5 on Hewlett-Packard Unix (HP-UX) systems |
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8 | |
9 | =head1 DESCRIPTION |
10 | |
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11 | This document describes various features of HP's Unix operating system |
12 | (HP-UX) that will affect how Perl version 5 (hereafter just Perl) is |
13 | compiled and/or runs. |
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14 | |
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15 | =head2 Using perl as shipped with HP-UX |
16 | |
17 | As of application release September 2001, HP-UX 11.00 is shipped with |
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18 | perl-5.6.1 in /opt/perl. The first occurrence is on CD 5012-7954 and |
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19 | can be installed using |
20 | |
21 | swinstall -s /cdrom perl |
22 | |
23 | assuming you have mounted that CD on /cdrom. In this version the |
24 | following modules are installed: |
25 | |
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 |
34 | |
35 | The build is a portable hppa-1.1 multithread build that supports large |
36 | files compiled with gcc-2.9-hppa-991112 |
37 | |
38 | If you perform a new installation, then Perl will be installed |
39 | automatically. |
40 | |
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41 | =head2 Using perl from HP's porting centre |
42 | |
43 | HP porting centre tries very hard to keep up with customer demand and |
44 | release updates from the Open Source community. Having precompiled |
45 | Perl binaries available is obvious. |
46 | |
47 | The HP porting centres are limited in what systems they are allowed |
48 | to port to and they usually choose the two most recent OS versions |
49 | available. This means that at the moment of writing, there are only |
50 | HPUX-11.00 and 11-20/22 (IA64) ports available on the porting centres. |
51 | |
52 | HP has asked the porting centre to move Open Source binaries |
53 | from /opt to /usr/local, so binaries produced since the start |
54 | of July 2002 are located in /usr/local. |
55 | |
56 | One of HP porting centres URL's is http://hpux.connect.org.uk/ |
57 | The 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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61 | When compiling Perl, you must use an ANSI C compiler. The C compiler |
62 | that ships with all HP-UX systems is a K&R compiler that should only be |
63 | used to build new kernels. |
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64 | |
65 | Perl can be compiled with either HP's ANSI C compiler or with gcc. The |
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66 | former is recommended, as not only can it compile Perl with no |
67 | difficulty, but also can take advantage of features listed later that |
68 | require the use of HP compiler-specific command-line flags. |
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69 | |
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70 | If you decide to use gcc, make sure your installation is recent and |
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71 | complete, and be sure to read the Perl INSTALL file for more gcc-specific |
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72 | details. |
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73 | |
74 | =head2 PA-RISC |
75 | |
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76 | HP'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 |
78 | chips, but any machine with this chip in it is quite obsolete and this |
79 | document will not attempt to address issues for compiling Perl on the |
80 | Motorola chipset. |
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81 | |
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82 | The most recent version of PA-RISC at the time of this document's last |
83 | update is 2.0. |
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84 | |
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85 | A 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 |
87 | part of the output of the "model" command. The second column is the |
88 | PA-RISC version and the third column is the exact chip type used. |
89 | (Start browsing at the bottom to prevent confusion ;-) |
90 | |
91 | # model |
92 | 9000/800/L1000-44 |
93 | # grep L1000-44 /usr/sam/lib/mo/sched.models |
94 | L1000-44 2.0 PA8500 |
95 | |
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96 | =head2 PA-RISC 1.0 |
97 | |
98 | The original version of PA-RISC, HP no longer sells any system with this chip. |
99 | |
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100 | The following systems contained PA-RISC 1.0 chips: |
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101 | |
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102 | 600, 635, 645, 808, 815, 822, 825, 832, 834, 835, 840, 842, 845, 850, |
103 | 852, 855, 860, 865, 870, 890 |
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104 | |
105 | =head2 PA-RISC 1.1 |
106 | |
107 | An upgrade to the PA-RISC design, it shipped for many years in many different |
108 | system. |
109 | |
110 | The following systems contain with PA-RISC 1.1 chips: |
111 | |
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112 | 705, 710, 712, 715, 720, 722, 725, 728, 730, 735, 742, 743, 744, 745, |
113 | 747, 750, 755, 770, 777, 778, 779, 800, 801, 803, 806, 807, 809, 811, |
114 | 813, 816, 817, 819, 821, 826, 827, 829, 831, 837, 839, 841, 847, 849, |
115 | 851, 856, 857, 859, 867, 869, 877, 887, 891, 892, 897, A180, A180C, |
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116 | B115, B120, B132L, B132L+, B160L, B180L, C100, C110, C115, C120, |
117 | C160L, D200, D210, D220, D230, D250, D260, D310, D320, D330, D350, |
118 | D360, D410, DX0, DX5, DXO, E25, E35, E45, E55, F10, F20, F30, G30, |
119 | G40, G50, G60, G70, H20, H30, H40, H50, H60, H70, I30, I40, I50, I60, |
120 | I70, J200, J210, J210XC, K100, K200, K210, K220, K230, K400, K410, |
121 | K420, S700i, S715, S744, S760, T500, T520 |
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122 | |
123 | =head2 PA-RISC 2.0 |
124 | |
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125 | The most recent upgrade to the PA-RISC design, it added support for |
126 | 64-bit integer data. |
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127 | |
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128 | As of the date of this document's last update, the following systems |
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129 | contain PA-RISC 2.0 chips: |
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130 | |
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131 | 700, 780, 781, 782, 783, 785, 802, 804, 810, 820, 861, 871, 879, 889, |
132 | 893, 895, 896, 898, 899, A400, A500, B1000, B2000, C130, C140, C160, |
133 | C180, C180+, C180-XP, C200+, C400+, C3000, C360, C3600, CB260, D270, |
134 | D280, D370, D380, D390, D650, J220, J2240, J280, J282, J400, J410, |
135 | J5000, J5500XM, J5600, J7000, J7600, K250, K260, K260-EG, K270, K360, |
136 | K370, K380, K450, K460, K460-EG, K460-XP, K470, K570, K580, L1000, |
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137 | L2000, L3000, N4000, R380, R390, SD16000, SD32000, SD64000, T540, |
138 | T600, V2000, V2200, V2250, V2500, V2600 |
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139 | |
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140 | Just before HP took over Compaq, some systems were renamed. the link |
141 | that contained the explanation is dead, so here's a short summary: |
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142 | |
143 | HP 9000 A-Class servers, now renamed HP Server rp2400 series. |
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144 | HP 9000 L-Class servers, now renamed HP Server rp5400 series. |
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145 | HP 9000 N-Class servers, now renamed HP Server rp7400. |
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146 | |
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147 | rp2400, rp2405, rp2430, rp2450, rp2470, rp3410, rp3440, rp5400, |
148 | rp5405, rp5430, rp5450, rp5470, rp7400, rp7405, rp7410, rp7420, |
149 | rp8400, rp8420, Superdome |
150 | |
151 | The current naming convention is: |
152 | |
153 | aadddd |
154 | ||||`+- 00 - 99 relative capacity & newness (upgrades, etc.) |
155 | |||`--- unique number for each architecture to ensure different |
156 | ||| systems do not have the same numbering across |
157 | ||| architectures |
158 | ||`---- 1 - 9 identifies family and/or relative positioning |
159 | || |
160 | |`----- c = ia32 (cisc) |
161 | | p = pa-risc |
162 | | x = ia-64 (Itanium & Itanium 2) |
163 | | h = housing |
164 | `------ t = tower |
165 | r = rack optimized |
166 | s = super scalable |
167 | b = blade |
168 | sa = appliance |
169 | |
170 | =head2 Itanium & Itanium 2 |
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171 | |
172 | HP also ships servers with the 128-bit Itanium processor(s). As of the |
173 | date of this document's last update, the following systems contain |
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174 | Itanium or Itanium 2 chips (this is very likely to be out of date): |
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175 | |
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176 | rx1600, rx2600, rx2600hptc, rx4610, rx4640, rx5670, rx7620, rx8620, |
177 | rx9610 |
178 | |
179 | To see all about your machine, type |
180 | |
181 | # model |
182 | ia64 hp server rx2600 |
183 | # /usr/contrib/bin/machinfo |
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184 | |
185 | =head2 Portability Between PA-RISC Versions |
186 | |
187 | An executable compiled on a PA-RISC 2.0 platform will not execute on a |
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188 | PA-RISC 1.1 platform, even if they are running the same version of |
189 | HP-UX. If you are building Perl on a PA-RISC 2.0 platform and want that |
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190 | Perl to also run on a PA-RISC 1.1, the compiler flags +DAportable and |
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191 | +DS32 should be used. |
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192 | |
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193 | It is no longer possible to compile PA-RISC 1.0 executables on either |
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194 | the PA-RISC 1.1 or 2.0 platforms. The command-line flags are accepted, |
195 | but the resulting executable will not run when transferred to a PA-RISC |
196 | 1.0 system. |
197 | |
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198 | =head2 Itanium Processor Family and HP-UX |
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199 | |
200 | HP-UX also runs on the new Itanium processor. This requires the use |
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201 | of a different version of HP-UX (currently 11.23 or 11i v1.6), and with |
202 | the exception of a few differences detailed below and in later sections, |
203 | Perl should compile with no problems. |
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204 | |
205 | Although PA-RISC binaries can run on Itanium systems, you should not |
206 | attempt to use a PA-RISC version of Perl on an Itanium system. This is |
207 | because shared libraries created on an Itanium system cannot be loaded |
208 | while running a PA-RISC executable. |
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209 | |
210 | =head2 Building Dynamic Extensions on HP-UX |
211 | |
212 | HP-UX supports dynamically loadable libraries (shared libraries). |
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213 | Shared libraries end with the suffix .sl. On Itanium systems, |
214 | they end with the suffix .so. |
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215 | |
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216 | Shared libraries created on a platform using a particular PA-RISC |
217 | version are not usable on platforms using an earlier PA-RISC version by |
218 | default. However, this backwards compatibility may be enabled using the |
219 | same +DAportable compiler flag (with the same PA-RISC 1.0 caveat |
220 | mentioned above). |
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221 | |
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222 | Shared libraries created on an Itanium platform cannot be loaded on |
223 | a PA-RISC platform. Shared libraries created on a PA-RISC platform |
224 | can only be loaded on an Itanium platform if it is a PA-RISC executable |
225 | that is attempting to load the PA-RISC library. A PA-RISC shared |
226 | library cannot be loaded into an Itanium executable nor vice-versa. |
227 | |
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228 | To create a shared library, the following steps must be performed: |
229 | |
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. |
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233 | (For gcc, the appropriate flag is -fpic or -fPIC.) |
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234 | |
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. |
238 | |
239 | (Note that these steps are usually handled automatically by the extension's |
240 | Makefile). |
241 | |
242 | If these dependent libraries are not listed at shared library creation |
243 | time, you will get fatal "Unresolved symbol" errors at run time when the |
244 | library is loaded. |
245 | |
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246 | You may create a shared library that refers to another library, which |
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247 | may be either an archive library or a shared library. If this second |
248 | library is a shared library, this is called a "dependent library". The |
249 | dependent library's name is recorded in the main shared library, but it |
250 | is not linked into the shared library. Instead, it is loaded when the |
251 | main shared library is loaded. This can cause problems if you build an |
252 | extension on one system and move it to another system where the |
253 | libraries may not be located in the same place as on the first system. |
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254 | |
255 | If the referred library is an archive library, then it is treated as a |
256 | simple collection of .o modules (all of which must contain PIC). These |
257 | modules are then linked into the shared library. |
258 | |
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259 | Note that it is okay to create a library which contains a dependent |
260 | library that is already linked into perl. |
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261 | |
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262 | Some extensions, like DB_File and Compress::Zlib use/require prebuilt |
263 | libraries for the perl extensions/modules to work. If these libraries |
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264 | are built using the default configuration, it might happen that you |
265 | run into an error like "invalid loader fixup" during load phase. |
266 | HP is aware of this problem. Search the HP-UX cxx-dev forums for |
267 | discussions 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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269 | PIC (position independent code). (For gcc, that would be |
270 | C<-fpic> or C<-fPIC>). In HP-UX 11.00 or newer the linker |
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271 | error message should tell the name of the offending object file. |
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272 | |
273 | A more general approach is to intervene manually, as with an example for |
274 | the DB_File module, which requires SleepyCat's libdb.sl: |
275 | |
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 | |
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303 | It is no longer possible to link PA-RISC 1.0 shared libraries (even |
304 | though the command-line flags are still present). |
305 | |
306 | PA-RISC and Itanium object files are not interchangeable. Although |
307 | you may be able to use ar to create an archive library of PA-RISC |
308 | object files on an Itanium system, you cannot link against it using |
309 | an Itanium link editor. |
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310 | |
311 | =head2 The HP ANSI C Compiler |
312 | |
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313 | When using this compiler to build Perl, you should make sure that the |
314 | flag -Aa is added to the cpprun and cppstdin variables in the config.sh |
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315 | file (though see the section on 64-bit perl below). If you are using a |
316 | recent version of the Perl distribution, these flags are set automatically. |
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317 | |
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318 | =head2 The GNU C Compiler |
319 | |
320 | When you are going to use the GNU C compiler (gcc), and you don't have |
321 | gcc yet, you can either build it yourself from the sources (available |
322 | from e.g. http://www.gnu.ai.mit.edu/software/gcc/releases.html) or fetch |
323 | a prebuilt binary from the HP porting center. There are two places where |
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324 | gcc prebuilds can be fetched; the first and best (for HP-UX 11 only) is |
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325 | http://h21007.www2.hp.com/dspp/tech/tech_TechSoftwareDetailPage_IDX/1,1703,547,00.html |
326 | the second is http://hpux.cs.utah.edu/hppd/hpux/Gnu/ where you can also |
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327 | find the GNU binutils package. (Browse through the list, because there |
328 | are often multiple versions of the same package available). |
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329 | |
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330 | Above mentioned distributions are depots. H.Merijn Brand has made prebuilt |
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331 | gcc binaries available on http://mirrors.develooper.com/hpux/ and/or |
332 | http://www.cmve.net/~merijn/ for HP-UX 10.20, HP-UX 11.00, and HP-UX 11.11 |
333 | (HP-UX 11i) in both 32- and 64-bit versions. These are bzipped tar archives |
334 | that also include recent GNU binutils and GNU gdb. Read the instructions |
335 | on that page to rebuild gcc using itself. |
336 | |
337 | On PA-RISC you need a different compiler for 32-bit applications and for |
338 | 64-bit applications. On PA-RISC, 32-bit objects and 64-bit objects do |
339 | not mix. period. There is no different behaviour for HP C-ANSI-C or GNU |
340 | gcc. So if you require your perl binary to use 64-bit libraries, like |
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341 | Oracle-64bit, you MUST build a 64-bit perl. |
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342 | |
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343 | Building a 64-bit capable gcc on PA-RISC from source is possible only when |
344 | you have the HP C-ANSI C compiler or an already working 64-bit binary of |
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345 | gcc available. Best performance for perl is achieved with HP's native |
346 | compiler. |
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347 | |
a83b6f46 |
348 | =head2 Using Large Files with Perl on HP-UX |
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349 | |
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350 | Beginning with HP-UX version 10.20, files larger than 2GB (2^31 bytes) |
351 | may be created and manipulated. Three separate methods of doing this |
352 | are available. Of these methods, the best method for Perl is to compile |
353 | using the -Duselargefiles flag to Configure. This causes Perl to be |
354 | compiled using structures and functions in which these are 64 bits wide, |
355 | rather than 32 bits wide. (Note that this will only work with HP's ANSI |
356 | C compiler. If you want to compile Perl using gcc, you will have to get |
aca48073 |
357 | a version of the compiler that supports 64-bit operations. See above for |
f3e4a94e |
358 | where to find it.) |
60ed1d8c |
359 | |
360 | There are some drawbacks to this approach. One is that any extension |
361 | which calls any file-manipulating C function will need to be recompiled |
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362 | (just follow the usual "perl Makefile.PL; make; make test; make install" |
363 | procedure). |
60ed1d8c |
364 | |
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365 | The list of functions that will need to recompiled is: |
366 | creat, fgetpos, fopen, |
367 | freopen, fsetpos, fstat, |
368 | fstatvfs, fstatvfsdev, ftruncate, |
369 | ftw, lockf, lseek, |
370 | lstat, mmap, nftw, |
371 | open, prealloc, stat, |
372 | statvfs, statvfsdev, tmpfile, |
373 | truncate, getrlimit, setrlimit |
f2a260d6 |
374 | |
60ed1d8c |
375 | Another drawback is only valid for Perl versions before 5.6.0. This |
376 | drawback is that the seek and tell functions (both the builtin version |
377 | and POSIX module version) will not perform correctly. |
378 | |
379 | It is strongly recommended that you use this flag when you run |
380 | Configure. If you do not do this, but later answer the question about |
381 | large files when Configure asks you, you may get a configuration that |
382 | cannot be compiled, or that does not function as expected. |
383 | |
a83b6f46 |
384 | =head2 Threaded Perl on HP-UX |
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385 | |
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386 | It is possible to compile a version of threaded Perl on any version of |
387 | HP-UX before 10.30, but it is strongly suggested that you be running on |
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388 | HP-UX 11.00 at least. |
389 | |
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390 | To compile Perl with threads, add -Dusethreads to the arguments of |
391 | Configure. Verify that the -D_POSIX_C_SOURCE=199506L compiler flag is |
392 | automatically added to the list of flags. Also make sure that -lpthread |
42be3f00 |
393 | is listed before -lc in the list of libraries to link Perl with. The |
394 | hints provided for HP-UX during Configure will try very hard to get |
395 | this right for you. |
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396 | |
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397 | HP-UX versions before 10.30 require a separate installation of a POSIX |
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398 | threads library package. Two examples are the HP DCE package, available |
399 | on "HP-UX Hardware Extensions 3.0, Install and Core OS, Release 10.20, |
400 | April 1999 (B3920-13941)" or the Freely available PTH package, available |
401 | though worldwide HP-UX mirrors of precompiled packages |
37a78d01 |
402 | (e.g. http://hpux.tn.tudelft.nl/hppd/hpux/) |
c7d9b096 |
403 | |
fa01be49 |
404 | If you are going to use the HP DCE package, the library used for threading |
405 | is /usr/lib/libcma.sl, but there have been multiple updates of that |
406 | library over time. Perl will build with the first version, but it |
407 | will not pass the test suite. Older Oracle versions might be a compelling |
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408 | reason not to update that library, otherwise please find a newer version |
fa01be49 |
409 | in one of the following patches: PHSS_19739, PHSS_20608, or PHSS_23672 |
410 | |
411 | reformatted output: |
412 | |
413 | d3:/usr/lib 106 > what libcma-*.1 |
414 | libcma-00000.1: |
415 | HP DCE/9000 1.5 Module: libcma.sl (Export) |
416 | Date: Apr 29 1996 22:11:24 |
417 | libcma-19739.1: |
418 | HP DCE/9000 1.5 PHSS_19739-40 Module: libcma.sl (Export) |
419 | Date: Sep 4 1999 01:59:07 |
420 | libcma-20608.1: |
421 | HP DCE/9000 1.5 PHSS_20608 Module: libcma.1 (Export) |
422 | Date: Dec 8 1999 18:41:23 |
423 | libcma-23672.1: |
424 | HP DCE/9000 1.5 PHSS_23672 Module: libcma.1 (Export) |
425 | Date: Apr 9 2001 10:01:06 |
426 | d3:/usr/lib 107 > |
427 | |
428 | |
a83b6f46 |
429 | =head2 64-bit Perl on HP-UX |
f2a260d6 |
430 | |
60ed1d8c |
431 | Beginning with HP-UX 11.00, programs compiled under HP-UX can take |
432 | advantage of the LP64 programming environment (LP64 means Longs and |
433 | Pointers are 64 bits wide). |
f2a260d6 |
434 | |
60ed1d8c |
435 | Work is being performed on Perl to make it 64-bit compliant on all |
436 | versions of Unix. Once this is complete, scalar variables will be able |
437 | to hold numbers larger than 2^32 with complete precision. |
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438 | |
70dff5ba |
439 | As of the date of this document, Perl is fully 64-bit compliant on |
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440 | HP-UX 11.00 and up for both cc- and gcc builds. If you are about to |
1d69df2b |
441 | build a 64-bit perl with GNU gcc, please read the gcc section carefully. |
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442 | |
60ed1d8c |
443 | Should a user wish to experiment with compiling Perl in the LP64 |
444 | environment, use the -Duse64bitall flag to Configure. This will force |
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445 | Perl to be compiled in a pure LP64 environment (with the +DD64 flag for |
1d69df2b |
446 | HP C-ANSI-C, with no additional options for GNU gcc 64-bit on PA-RISC, |
b20ef1a8 |
447 | and with -mlp64 for GNU gcc on Itanium). |
448 | If you want to compile Perl using gcc, you will have to get a version of |
aca48073 |
449 | the compiler that supports 64-bit operations.) |
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450 | |
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451 | You can also use the -Duse64bitint flag to Configure. Although there |
452 | are some minor differences between compiling Perl with this flag versus |
453 | the -Duse64bitall flag, they should not be noticeable from a Perl user's |
454 | perspective. |
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455 | |
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456 | In both cases, it is strongly recommended that you use these flags when |
457 | you run Configure. If you do not use do this, but later answer the |
458 | questions about 64-bit numbers when Configure asks you, you may get a |
459 | configuration that cannot be compiled, or that does not function as |
460 | expected. |
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461 | |
5df8692c |
462 | =head2 Oracle on HP-UX |
463 | |
464 | Using perl to connect to Oracle databases through DBI and DBD::Oracle |
465 | has caused a lot of people many headaches. Read README.hpux in the |
466 | DBD::Oracle for much more information. The reason to mention it here |
467 | is that Oracle requires a perl built with libcl and libpthread, the |
468 | latter even when perl is build without threads. Building perl using |
469 | all defaults, but still enabling to build DBD::Oracle later on can be |
470 | achieved using |
471 | |
472 | Configure -A prepend:libswanted='cl pthread ' ... |
473 | |
191078c7 |
474 | Do not forget the space before the trailing quote. |
475 | |
476 | Also note that this does not (yet) work with all configurations, |
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477 | it is known to fail with 64-bit versions of GCC. |
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478 | |
a83b6f46 |
479 | =head2 GDBM and Threads on HP-UX |
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480 | |
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481 | If you attempt to compile Perl with threads on an 11.X system and also |
482 | link in the GDBM library, then Perl will immediately core dump when it |
483 | starts up. The only workaround at this point is to relink the GDBM |
484 | library under 11.X, then relink it into Perl. |
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485 | |
a83b6f46 |
486 | =head2 NFS filesystems and utime(2) on HP-UX |
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487 | |
488 | If you are compiling Perl on a remotely-mounted NFS filesystem, the test |
60ed1d8c |
489 | io/fs.t may fail on test #18. This appears to be a bug in HP-UX and no |
490 | fix is currently available. |
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491 | |
a83b6f46 |
492 | =head2 perl -P and // and HP-UX |
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493 | |
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494 | If HP-UX Perl is compiled with flags that will cause problems if the |
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495 | -P flag of Perl (preprocess Perl code with the C preprocessor before |
496 | perl sees it) is used. The problem is that C<//>, being a C++-style |
497 | until-end-of-line comment, will disappear along with the remainder |
498 | of the line. This means that common Perl constructs like |
499 | |
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500 | s/foo//; |
183968aa |
501 | |
502 | will turn into illegal code |
503 | |
efdf3af0 |
504 | s/foo |
183968aa |
505 | |
efdf3af0 |
506 | The workaround is to use some other quoting separator than C<"/">, |
507 | like for example C<"!">: |
183968aa |
508 | |
efdf3af0 |
509 | s!foo!!; |
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510 | |
a83b6f46 |
511 | =head2 HP-UX Kernel Parameters (maxdsiz) for Compiling Perl |
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512 | |
513 | By default, HP-UX comes configured with a maximum data segment size of |
514 | 64MB. This is too small to correctly compile Perl with the maximum |
515 | optimization levels. You can increase the size of the maxdsiz kernel |
516 | parameter through the use of SAM. |
517 | |
518 | When using the GUI version of SAM, click on the Kernel Configuration |
519 | icon, then the Configurable Parameters icon. Scroll down and select |
520 | the maxdsiz line. From the Actions menu, select the Modify Configurable |
521 | Parameter item. Insert the new formula into the Formula/Value box. |
522 | Then follow the instructions to rebuild your kernel and reboot your |
523 | system. |
524 | |
525 | In general, a value of 256MB (or "256*1024*1024") is sufficient for |
526 | Perl to compile at maximum optimization. |
527 | |
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528 | =head1 nss_delete core dump from op/pwent or op/grent |
529 | |
530 | You may get a bus error core dump from the op/pwent or op/grent |
531 | tests. If compiled with -g you will see a stack trace much like |
532 | the following: |
533 | |
534 | #0 0xc004216c in () from /usr/lib/libc.2 |
535 | #1 0xc00d7550 in __nss_src_state_destr () from /usr/lib/libc.2 |
536 | #2 0xc00d7768 in __nss_src_state_destr () from /usr/lib/libc.2 |
48529397 |
537 | #3 0xc00d78a8 in nss_delete () from /usr/lib/libc.2 |
538 | #4 0xc01126d8 in endpwent () from /usr/lib/libc.2 |
1081c3b9 |
539 | #5 0xd1950 in Perl_pp_epwent () from ./perl |
540 | #6 0x94d3c in Perl_runops_standard () from ./perl |
541 | #7 0x23728 in S_run_body () from ./perl |
542 | #8 0x23428 in perl_run () from ./perl |
543 | #9 0x2005c in main () from ./perl |
544 | |
545 | The key here is the C<nss_delete> call. One workaround for this |
546 | bug seems to be to create add to the file F</etc/nsswitch.conf> |
547 | (at least) the following lines |
548 | |
48529397 |
549 | group: files |
1081c3b9 |
550 | passwd: files |
551 | |
552 | Whether you are using NIS does not matter. Amazingly enough, |
3a1825b5 |
553 | the same bug also affects Solaris. |
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554 | |
f2a260d6 |
555 | =head1 AUTHOR |
556 | |
557 | Jeff Okamoto <okamoto@corp.hp.com> |
fa01be49 |
558 | H.Merijn Brand <h.m.brand@hccnet.nl> |
f2a260d6 |
559 | |
560 | With much assistance regarding shared libraries from Marc Sabatella. |
561 | |
562 | =head1 DATE |
563 | |
b20ef1a8 |
564 | Version 0.7.0: 2004-06-09 |
f2a260d6 |
565 | |
566 | =cut |