Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | # hints/dec_osf.sh |
8e964347 | 2 | |
b971f6e4 | 3 | # * If you want to debug perl or want to send a |
8e964347 AB |
4 | # stack trace for inclusion into an bug report, call |
5 | # Configure with the additional argument -Doptimize=-g2 | |
6 | # or uncomment this assignment to "optimize": | |
7 | # | |
8 | #optimize=-g2 | |
9 | # | |
8a019ce7 JH |
10 | # If you want both to optimise and debug with the DEC cc |
11 | # you must have -g3, e.g. "-O4 -g3", and (re)run Configure. | |
12 | # | |
b971f6e4 | 13 | # * gcc can always have both -g and optimisation on. |
8a019ce7 | 14 | # |
b971f6e4 | 15 | # * debugging optimised code, no matter what compiler |
8a019ce7 JH |
16 | # one is using, can be surprising and confusing because of |
17 | # the optimisation tricks like code motion, code removal, | |
18 | # loop unrolling, and inlining. The source code and the | |
19 | # executable code simply do not agree any more while in | |
20 | # mid-execution, the optimiser only cares about the results. | |
21 | # | |
b971f6e4 | 22 | # * Configure will automatically add the often quoted |
f2c69087 JH |
23 | # -DDEBUGGING for you if the -g is specified. |
24 | # | |
b971f6e4 | 25 | # * There is even more optimisation available in the new |
f2c69087 JH |
26 | # (GEM) DEC cc: -O5 and -fast. "man cc" will tell more about them. |
27 | # The jury is still out whether either or neither help for Perl | |
28 | # and how much. Based on very quick testing, -fast boosts | |
29 | # raw data copy by about 5-15% (-fast brings in, among other | |
30 | # things, inlined, ahem, fast memcpy()), while on the other | |
31 | # hand searching things (index, m//, s///), seems to get slower. | |
32 | # Your mileage will vary. | |
8e964347 | 33 | # |
b971f6e4 | 34 | # * The -std is needed because the following compiled |
e60a08f8 JH |
35 | # without the -std and linked with -lm |
36 | # | |
37 | # #include <math.h> | |
38 | # #include <stdio.h> | |
39 | # int main(){short x=10,y=sqrt(x);printf("%d\n",y);} | |
40 | # | |
41 | # will in Digital UNIX 3.* and 4.0b print 0 -- and in Digital | |
42 | # UNIX 4.0{,a} dump core: Floating point exception in the printf(), | |
43 | # the y has become a signaling NaN. | |
44 | # | |
b971f6e4 | 45 | # * Compilation warnings like: |
46 | # | |
47 | # "Undefined the ANSI standard macro ..." | |
48 | # | |
49 | # can be ignored, at least while compiling the POSIX extension | |
50 | # and especially if using the sfio (the latter is not a standard | |
51 | # part of Perl, never mind if it says little to you). | |
52 | # | |
8e964347 | 53 | |
e60a08f8 JH |
54 | # If using the DEC compiler we must find out the DEC compiler style: |
55 | # the style changed between Digital UNIX (aka DEC OSF/1) 3 and | |
56 | # Digital UNIX 4. The old compiler was originally from Ultrix and | |
57 | # the MIPS company, the new compiler is originally from the VAX world | |
58 | # and it is called GEM. Many of the options we are going to use depend | |
59 | # on the compiler style. | |
60 | ||
b691c02f JH |
61 | # do NOT, I repeat, *NOT* take away the leading tabs |
62 | # Configure Black Magic (TM) | |
b971f6e4 | 63 | # reset |
e60a08f8 | 64 | _DEC_cc_style= |
e60a08f8 JH |
65 | case "$cc" in |
66 | *gcc*) ;; # pass | |
67 | *) # compile something small: taint.c is fine for this. | |
68 | # the main point is the '-v' flag of 'cc'. | |
69 | case "`cc -v -I. -c taint.c -o /tmp/taint$$.o 2>&1`" in | |
70 | */gemc_cc*) # we have the new DEC GEM CC | |
dfa3a3d3 | 71 | _DEC_cc_style=new |
8a019ce7 | 72 | ;; |
e60a08f8 | 73 | *) # we have the old MIPS CC |
dfa3a3d3 | 74 | _DEC_cc_style=old |
8a019ce7 | 75 | ;; |
e60a08f8 JH |
76 | esac |
77 | # cleanup | |
78 | rm -f /tmp/taint$$.o | |
79 | ;; | |
80 | esac | |
81 | ||
b971f6e4 | 82 | # be nauseatingly ANSI |
83 | case "$cc" in | |
9607fc9c | 84 | *gcc*) ccflags="$ccflags -ansi" |
b971f6e4 | 85 | ;; |
86 | *) ccflags="$ccflags -std" | |
87 | ;; | |
88 | esac | |
89 | ||
90 | # for gcc the Configure knows about the -fpic: | |
91 | # position-independent code for dynamic loading | |
92 | ||
e60a08f8 JH |
93 | # we want optimisation |
94 | ||
95 | case "$optimize" in | |
96 | '') case "$cc" in | |
97 | *gcc*) | |
98 | optimize='-O3' ;; | |
99 | *) case "$_DEC_cc_style" in | |
313489a2 SB |
100 | new) optimize='-O4' |
101 | ccflags="$ccflags -fprm d -ieee" | |
102 | ;; | |
e60a08f8 JH |
103 | old) optimize='-O2 -Olimit 3200' ;; |
104 | esac | |
b971f6e4 | 105 | ccflags="$ccflags -D_INTRINSICS" |
e60a08f8 | 106 | ;; |
8e964347 AB |
107 | esac |
108 | ;; | |
1fc4cb55 | 109 | esac |
28757baa | 110 | |
313489a2 SB |
111 | # Make glibpth agree with the compiler suite. Note that /shlib |
112 | # is not here. That's on purpose. Even though that's where libc | |
113 | # really lives from V4.0 on, the linker (and /sbin/loader) won't | |
114 | # look there by default. The sharable /sbin utilities were all | |
115 | # built with "-Wl,-rpath,/shlib" to get around that. This makes | |
116 | # no attempt to figure out the additional location(s) searched by | |
117 | # gcc, since not all versions of gcc are easily coerced into | |
118 | # revealing that information. | |
b0362887 SB |
119 | glibpth="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc" |
120 | glibpth="$glibpth /usr/lib /usr/local/lib /var/shlib" | |
313489a2 | 121 | |
8e964347 AB |
122 | # dlopen() is in libc |
123 | libswanted="`echo $libswanted | sed -e 's/ dl / /'`" | |
124 | ||
b971f6e4 | 125 | # libPW contains nothing useful for perl |
8a019ce7 JH |
126 | libswanted="`echo $libswanted | sed -e 's/ PW / /'`" |
127 | ||
723e14d4 SB |
128 | # libnet contains nothing useful for perl here, and doesn't work |
129 | libswanted="`echo $libswanted | sed -e 's/ net / /'`" | |
130 | ||
b971f6e4 | 131 | # libbsd contains nothing used by perl that is not already in libc |
8a019ce7 JH |
132 | libswanted="`echo $libswanted | sed -e 's/ bsd / /'`" |
133 | ||
b971f6e4 | 134 | # libc need not be separately listed |
8a019ce7 JH |
135 | libswanted="`echo $libswanted | sed -e 's/ c / /'`" |
136 | ||
b971f6e4 | 137 | # ndbm is already in libc |
138 | libswanted="`echo $libswanted | sed -e 's/ ndbm / /'`" | |
8a019ce7 JH |
139 | |
140 | # the basic lddlflags used always | |
141 | lddlflags='-shared -expect_unresolved "*"' | |
142 | ||
b971f6e4 | 143 | # Fancy compiler suites use optimising linker as well as compiler. |
144 | # <spider@Orb.Nashua.NH.US> | |
b8f0c030 | 145 | case "`uname -r`" in |
b971f6e4 | 146 | *[123].*) # old loader |
147 | lddlflags="$lddlflags -O3" | |
148 | ;; | |
a07564da KS |
149 | *) if $test "X$optimize" = "X$undef"; then |
150 | lddlflags="$lddlflags -msym" | |
151 | else | |
e3159d07 JH |
152 | case "`sizer -v`" in |
153 | *4.0D*) | |
154 | # QAR 56761: -O4 + .so may produce broken code, | |
155 | # fixed in 4.0E or better. | |
156 | ;; | |
157 | *) | |
158 | lddlflags="$lddlflags $optimize" | |
159 | ;; | |
160 | esac | |
161 | # -msym: If using a sufficiently recent /sbin/loader, | |
162 | # keep the module symbols with the modules. | |
163 | lddlflags="$lddlflags -msym" | |
a07564da | 164 | fi |
b971f6e4 | 165 | ;; |
166 | esac | |
167 | # Yes, the above loses if gcc does not use the system linker. | |
168 | # If that happens, let me know about it. <jhi@iki.fi> | |
169 | ||
8a019ce7 | 170 | |
b971f6e4 | 171 | # If debugging or (old systems and doing shared) |
172 | # then do not strip the lib, otherwise, strip. | |
173 | # As noted above the -DDEBUGGING is added automagically by Configure if -g. | |
8a019ce7 JH |
174 | case "$optimize" in |
175 | *-g*) ;; # left intentionally blank | |
b8f0c030 | 176 | *) case "`uname -r`" in |
b971f6e4 | 177 | *[123].*) |
178 | case "$useshrplib" in | |
179 | false|undef|'') lddlflags="$lddlflags -s" ;; | |
180 | esac | |
181 | ;; | |
8a019ce7 | 182 | *) lddlflags="$lddlflags -s" |
b971f6e4 | 183 | ;; |
184 | esac | |
185 | ;; | |
8a019ce7 | 186 | esac |
8e964347 AB |
187 | |
188 | # | |
313489a2 SB |
189 | # Make embedding in things like INN and Apache more memory friendly. |
190 | # Keep it overridable on the Configure command line, though, so that | |
191 | # "-Uuseshrplib" prevents this default. | |
192 | # | |
193 | ||
2bf2710f GS |
194 | case "$_DEC_cc_style.$useshrplib" in |
195 | new.) useshrplib="$define" ;; | |
196 | esac | |
313489a2 | 197 | |
85ab1d1d JH |
198 | # The EFF_ONLY_OK from <sys/access.h> is present but dysfunctional for |
199 | # [RWX]_OK as of Digital UNIX 4.0[A-D]?. If and when this gets fixed, | |
200 | # please adjust this appropriately. See also pp_sys.c just before the | |
201 | # emulate_eaccess(). | |
5ff3f7a4 GS |
202 | |
203 | pp_sys_cflags='ccflags="$ccflags -DNO_EFF_ONLY_OK"' | |
204 | ||
104d25b7 JH |
205 | # This script UU/usethreads.cbu will get 'called-back' by Configure |
206 | # after it has prompted the user for whether to use threads. | |
207 | cat > UU/usethreads.cbu <<'EOCBU' | |
208 | case "$usethreads" in | |
209 | $define|true|[yY]*) | |
e883c329 | 210 | # Threads interfaces changed with V4.0. |
104d25b7 JH |
211 | case "`uname -r`" in |
212 | *[123].*) | |
213 | libswanted="$libswanted pthreads mach exc c_r" | |
214 | ccflags="-threads $ccflags" | |
215 | ;; | |
216 | *) | |
217 | libswanted="$libswanted pthread exc" | |
218 | ccflags="-pthread $ccflags" | |
219 | ;; | |
220 | esac | |
e883c329 | 221 | |
104d25b7 JH |
222 | usemymalloc='n' |
223 | ;; | |
224 | esac | |
225 | EOCBU | |
226 | ||
313489a2 | 227 | # |
e60a08f8 JH |
228 | # Unset temporary variables no more needed. |
229 | # | |
230 | ||
231 | unset _DEC_cc_style | |
232 | ||
233 | # | |
8e964347 AB |
234 | # History: |
235 | # | |
85ab1d1d JH |
236 | # perl5.005_51: |
237 | # | |
238 | # September-1998 Jarkko Hietaniemi <jhi@iki.fi> | |
239 | # | |
240 | # * Added the -DNO_EFF_ONLY_OK flag ('use filetest;' support). | |
241 | # | |
313489a2 SB |
242 | # perl5.004_57: |
243 | # | |
244 | # 19-Dec-1997 Spider Boardman <spider@Orb.Nashua.NH.US> | |
245 | # | |
85ab1d1d | 246 | # * Newer Digital UNIX compilers enforce signaling for NaN without |
313489a2 SB |
247 | # -ieee. Added -fprm d at the same time since it's friendlier for |
248 | # embedding. | |
249 | # | |
250 | # * Fixed the library search path to match cc, ld, and /sbin/loader. | |
251 | # | |
252 | # * Default to building -Duseshrplib on newer systems. -Uuseshrplib | |
253 | # still overrides. | |
254 | # | |
255 | # * Fix -pthread additions for useshrplib. ld has no -pthread option. | |
256 | # | |
257 | # | |
723e14d4 SB |
258 | # perl5.004_04: |
259 | # | |
260 | # 19-Sep-1997 Spider Boardman <spider@Orb.Nashua.NH.US> | |
261 | # | |
262 | # * libnet on Digital UNIX is for JAVA, not for sockets. | |
263 | # | |
264 | # | |
b971f6e4 | 265 | # perl5.003_28: |
266 | # | |
267 | # 22-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
268 | # | |
269 | # * Restructuring Spider's suggestions. | |
270 | # | |
271 | # * Older Digital UNIXes cannot handle -Olimit ... for $lddlflags. | |
272 | # | |
273 | # * ld -s cannot be used in older Digital UNIXes when doing shared. | |
274 | # | |
275 | # | |
276 | # 21-Feb-1997 Spider Boardman <spider@Orb.Nashua.NH.US> | |
277 | # | |
278 | # * -hidden removed. | |
279 | # | |
280 | # * -DSTANDARD_C removed. | |
281 | # | |
282 | # * -D_INTRINSICS added. (that -fast does not seem to buy much confirmed) | |
283 | # | |
284 | # * odbm not in libc, only ndbm. Therefore dbm back to $libswanted. | |
285 | # | |
286 | # * -msym for the newer runtime loaders. | |
287 | # | |
288 | # * $optimize also in $lddflags. | |
289 | # | |
290 | # | |
e60a08f8 JH |
291 | # perl5.003_27: |
292 | # | |
293 | # 18-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
294 | # | |
295 | # * unset _DEC_cc_style and more commentary on -std. | |
296 | # | |
297 | # | |
dfa3a3d3 CS |
298 | # perl5.003_26: |
299 | # | |
300 | # 15-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
301 | # | |
e60a08f8 | 302 | # * -std and -ansi. |
dfa3a3d3 CS |
303 | # |
304 | # | |
f2c69087 JH |
305 | # perl5.003_24: |
306 | # | |
307 | # 30-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
308 | # | |
309 | # * Fixing the note on -DDEBUGGING. | |
310 | # | |
311 | # * Note on -O5 -fast. | |
312 | # | |
313 | # | |
8a019ce7 JH |
314 | # perl5.003_23: |
315 | # | |
316 | # 26-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
317 | # | |
318 | # * Notes on how to do both optimisation and debugging. | |
319 | # | |
320 | # | |
321 | # 25-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
322 | # | |
323 | # * Remove unneeded libraries from $libswanted: PW, bsd, c, dbm | |
324 | # | |
325 | # * Restructure the $lddlflags build. | |
326 | # | |
327 | # * $optimize based on which compiler we have. | |
328 | # | |
329 | # | |
8e964347 AB |
330 | # perl5.003_22: |
331 | # | |
332 | # 23-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> | |
333 | # | |
334 | # * Added comments 'how to create a debugging version of perl' | |
335 | # | |
336 | # * Fixed logic of this script to prevent stripping of shared | |
337 | # objects by the loader (see ld man page for -s) is debugging | |
338 | # is set via the -g switch. | |
339 | # | |
340 | # | |
341 | # 21-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> | |
342 | # | |
343 | # * now 'dl' is always removed from libswanted. Not only if | |
344 | # optimize is an empty string. | |
345 | # | |
346 | # | |
347 | # 17-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> | |
348 | # | |
349 | # * Removed 'dl' from libswanted: When the FreePort binary | |
350 | # translator for Sun binaries is installed Configure concludes | |
351 | # that it should use libdl.x.yz.fpx.so :-( | |
352 | # Because the dlopen, dlclose,... calls are in the | |
353 | # C library it not necessary at all to check for the | |
354 | # dl library. Therefore dl is removed from libswanted. | |
355 | # | |
356 | # | |
357 | # 1-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> | |
358 | # | |
359 | # * Set -Olimit to 3200 because perl_yylex.c got too big | |
360 | # for the optimizer. | |
361 | # | |
104d25b7 JH |
362 | |
363 |