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 | ||
a68015de JH |
61 | cc=${cc:-cc} |
62 | ||
b691c02f JH |
63 | # do NOT, I repeat, *NOT* take away the leading tabs |
64 | # Configure Black Magic (TM) | |
b971f6e4 | 65 | # reset |
e60a08f8 | 66 | _DEC_cc_style= |
8d5a0f9f | 67 | case "`$cc -v 2>&1 | grep cc`" in |
f931c1d2 | 68 | *gcc*) _gcc_version=`$cc --version 2>&1 | tr . ' '` |
2cae8c0d | 69 | set $_gcc_version |
3f8b8817 | 70 | if test "$1" -lt 2 -o \( "$1" -eq 2 -a \( "$2" -lt 95 -o \( "$2" -eq 95 -a "$3" -lt 2 \) \) \); then |
2cae8c0d JH |
71 | cat >&4 <<EOF |
72 | ||
61f70568 JB |
73 | *** Your cc seems to be gcc and its version ($_gcc_version) seems to be |
74 | *** less than 2.95.2. This is not a good idea since old versions of gcc | |
75 | *** are known to produce buggy code when compiling Perl (and no doubt for | |
76 | *** other programs, too). | |
3f8b8817 | 77 | *** |
61f70568 JB |
78 | *** Therefore, I strongly suggest upgrading your gcc. (Why don't you use |
79 | *** the vendor cc is also a good question. It comes with the operating | |
3f8b8817 | 80 | *** system and produces good code.) |
2cae8c0d JH |
81 | |
82 | Cannot continue, aborting. | |
83 | ||
84 | EOF | |
85 | exit 1 | |
86 | fi | |
3f8b8817 JH |
87 | if test "$1" -eq 2 -a "$2" -eq 95 -a "$3" -le 2; then |
88 | cat >&4 <<EOF | |
89 | ||
90 | *** Note that as of gcc 2.95.2 (19991024) and Perl 5.6.0 (March 2000) | |
91 | *** if the said Perl is compiled with the said gcc the lib/sdbm test | |
61f70568 JB |
92 | *** may dump core (meaning that the SDBM_File extension is unusable). |
93 | *** As this core dump never happens with the vendor cc, this is most | |
94 | *** probably a lingering bug in gcc. Therefore unless you have a better | |
95 | *** gcc installation you are still better off using the vendor cc. | |
3f8b8817 JH |
96 | |
97 | Since you explicitly chose gcc, I assume that you know what are doing. | |
98 | ||
99 | EOF | |
100 | fi | |
2cae8c0d | 101 | ;; |
e60a08f8 | 102 | *) # compile something small: taint.c is fine for this. |
598c950e | 103 | ccversion=`cc -V | awk '/(Compaq|DEC) C/ {print $3}'` |
e60a08f8 | 104 | # the main point is the '-v' flag of 'cc'. |
52c7d5b6 | 105 | case "`cc -v -I. -c taint.c -o taint$$.o 2>&1`" in |
e60a08f8 | 106 | */gemc_cc*) # we have the new DEC GEM CC |
dfa3a3d3 | 107 | _DEC_cc_style=new |
8a019ce7 | 108 | ;; |
e60a08f8 | 109 | *) # we have the old MIPS CC |
dfa3a3d3 | 110 | _DEC_cc_style=old |
8a019ce7 | 111 | ;; |
e60a08f8 JH |
112 | esac |
113 | # cleanup | |
52c7d5b6 | 114 | rm -f taint$$.o |
e60a08f8 JH |
115 | ;; |
116 | esac | |
117 | ||
b971f6e4 | 118 | # be nauseatingly ANSI |
8d5a0f9f | 119 | case "`$cc -v 2>&1 | grep gcc`" in |
9607fc9c | 120 | *gcc*) ccflags="$ccflags -ansi" |
b971f6e4 | 121 | ;; |
122 | *) ccflags="$ccflags -std" | |
123 | ;; | |
124 | esac | |
125 | ||
126 | # for gcc the Configure knows about the -fpic: | |
127 | # position-independent code for dynamic loading | |
128 | ||
e60a08f8 JH |
129 | # we want optimisation |
130 | ||
131 | case "$optimize" in | |
8d5a0f9f | 132 | '') case "`$cc -v 2>&1 | grep gcc`" in |
e60a08f8 JH |
133 | *gcc*) |
134 | optimize='-O3' ;; | |
135 | *) case "$_DEC_cc_style" in | |
313489a2 SB |
136 | new) optimize='-O4' |
137 | ccflags="$ccflags -fprm d -ieee" | |
138 | ;; | |
e60a08f8 JH |
139 | old) optimize='-O2 -Olimit 3200' ;; |
140 | esac | |
b971f6e4 | 141 | ccflags="$ccflags -D_INTRINSICS" |
e60a08f8 | 142 | ;; |
8e964347 AB |
143 | esac |
144 | ;; | |
1fc4cb55 | 145 | esac |
28757baa | 146 | |
313489a2 SB |
147 | # Make glibpth agree with the compiler suite. Note that /shlib |
148 | # is not here. That's on purpose. Even though that's where libc | |
149 | # really lives from V4.0 on, the linker (and /sbin/loader) won't | |
150 | # look there by default. The sharable /sbin utilities were all | |
151 | # built with "-Wl,-rpath,/shlib" to get around that. This makes | |
152 | # no attempt to figure out the additional location(s) searched by | |
153 | # gcc, since not all versions of gcc are easily coerced into | |
154 | # revealing that information. | |
b0362887 SB |
155 | glibpth="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc" |
156 | glibpth="$glibpth /usr/lib /usr/local/lib /var/shlib" | |
313489a2 | 157 | |
8e964347 AB |
158 | # dlopen() is in libc |
159 | libswanted="`echo $libswanted | sed -e 's/ dl / /'`" | |
160 | ||
b971f6e4 | 161 | # libPW contains nothing useful for perl |
8a019ce7 JH |
162 | libswanted="`echo $libswanted | sed -e 's/ PW / /'`" |
163 | ||
723e14d4 SB |
164 | # libnet contains nothing useful for perl here, and doesn't work |
165 | libswanted="`echo $libswanted | sed -e 's/ net / /'`" | |
166 | ||
b971f6e4 | 167 | # libbsd contains nothing used by perl that is not already in libc |
8a019ce7 JH |
168 | libswanted="`echo $libswanted | sed -e 's/ bsd / /'`" |
169 | ||
b971f6e4 | 170 | # libc need not be separately listed |
8a019ce7 JH |
171 | libswanted="`echo $libswanted | sed -e 's/ c / /'`" |
172 | ||
b971f6e4 | 173 | # ndbm is already in libc |
174 | libswanted="`echo $libswanted | sed -e 's/ ndbm / /'`" | |
8a019ce7 JH |
175 | |
176 | # the basic lddlflags used always | |
177 | lddlflags='-shared -expect_unresolved "*"' | |
178 | ||
b971f6e4 | 179 | # Fancy compiler suites use optimising linker as well as compiler. |
180 | # <spider@Orb.Nashua.NH.US> | |
b8f0c030 | 181 | case "`uname -r`" in |
b971f6e4 | 182 | *[123].*) # old loader |
183 | lddlflags="$lddlflags -O3" | |
184 | ;; | |
a07564da KS |
185 | *) if $test "X$optimize" = "X$undef"; then |
186 | lddlflags="$lddlflags -msym" | |
187 | else | |
baa8820a | 188 | case "`/usr/sbin/sizer -v`" in |
e3159d07 JH |
189 | *4.0D*) |
190 | # QAR 56761: -O4 + .so may produce broken code, | |
191 | # fixed in 4.0E or better. | |
192 | ;; | |
193 | *) | |
194 | lddlflags="$lddlflags $optimize" | |
195 | ;; | |
196 | esac | |
197 | # -msym: If using a sufficiently recent /sbin/loader, | |
198 | # keep the module symbols with the modules. | |
baa8820a | 199 | lddlflags="$lddlflags -msym -std" |
a07564da | 200 | fi |
b971f6e4 | 201 | ;; |
202 | esac | |
203 | # Yes, the above loses if gcc does not use the system linker. | |
204 | # If that happens, let me know about it. <jhi@iki.fi> | |
205 | ||
8a019ce7 | 206 | |
b971f6e4 | 207 | # If debugging or (old systems and doing shared) |
208 | # then do not strip the lib, otherwise, strip. | |
209 | # As noted above the -DDEBUGGING is added automagically by Configure if -g. | |
8a019ce7 JH |
210 | case "$optimize" in |
211 | *-g*) ;; # left intentionally blank | |
b8f0c030 | 212 | *) case "`uname -r`" in |
b971f6e4 | 213 | *[123].*) |
214 | case "$useshrplib" in | |
215 | false|undef|'') lddlflags="$lddlflags -s" ;; | |
216 | esac | |
217 | ;; | |
8a019ce7 | 218 | *) lddlflags="$lddlflags -s" |
b971f6e4 | 219 | ;; |
220 | esac | |
221 | ;; | |
8a019ce7 | 222 | esac |
8e964347 AB |
223 | |
224 | # | |
313489a2 SB |
225 | # Make embedding in things like INN and Apache more memory friendly. |
226 | # Keep it overridable on the Configure command line, though, so that | |
227 | # "-Uuseshrplib" prevents this default. | |
228 | # | |
229 | ||
2bf2710f GS |
230 | case "$_DEC_cc_style.$useshrplib" in |
231 | new.) useshrplib="$define" ;; | |
232 | esac | |
313489a2 | 233 | |
85ab1d1d JH |
234 | # The EFF_ONLY_OK from <sys/access.h> is present but dysfunctional for |
235 | # [RWX]_OK as of Digital UNIX 4.0[A-D]?. If and when this gets fixed, | |
236 | # please adjust this appropriately. See also pp_sys.c just before the | |
237 | # emulate_eaccess(). | |
5ff3f7a4 | 238 | |
baa8820a JH |
239 | # Fixed in V5.0A. |
240 | case "`/usr/sbin/sizer -v`" in | |
f60a5d46 | 241 | *5.0[A-Z]*|*5.[1-9]*|*[6-9].[0-9]*) |
baa8820a JH |
242 | : ok |
243 | ;; | |
244 | *) | |
245 | # V5.0 or previous | |
5ff3f7a4 | 246 | pp_sys_cflags='ccflags="$ccflags -DNO_EFF_ONLY_OK"' |
baa8820a JH |
247 | ;; |
248 | esac | |
5ff3f7a4 | 249 | |
6b8eaf93 JH |
250 | # The off_t is already 8 bytes, so we do have largefileness. |
251 | ||
f60a5d46 | 252 | cat > UU/usethreads.cbu <<'EOCBU' |
104d25b7 JH |
253 | # This script UU/usethreads.cbu will get 'called-back' by Configure |
254 | # after it has prompted the user for whether to use threads. | |
104d25b7 JH |
255 | case "$usethreads" in |
256 | $define|true|[yY]*) | |
75d72f2c | 257 | # Threads interfaces changed with V4.0. |
8d5a0f9f | 258 | case "`$cc -v 2>&1 | grep gcc`" in |
75d72f2c JH |
259 | *gcc*)ccflags="-D_REENTRANT $ccflags" ;; |
260 | *) case "`uname -r`" in | |
261 | *[123].*) ccflags="-threads $ccflags" ;; | |
262 | *) ccflags="-pthread $ccflags" ;; | |
263 | esac | |
104d25b7 | 264 | ;; |
75d72f2c JH |
265 | esac |
266 | case "`uname -r`" in | |
267 | *[123].*) libswanted="$libswanted pthreads mach exc c_r" ;; | |
268 | *) libswanted="$libswanted pthread exc" ;; | |
269 | esac | |
e883c329 | 270 | |
baa8820a JH |
271 | case "$usemymalloc" in |
272 | '') | |
273 | usemymalloc='n' | |
274 | ;; | |
275 | esac | |
104d25b7 JH |
276 | ;; |
277 | esac | |
278 | EOCBU | |
279 | ||
f60a5d46 JH |
280 | cat > UU/uselongdouble.cbu <<'EOCBU' |
281 | # This script UU/uselongdouble.cbu will get 'called-back' by Configure | |
282 | # after it has prompted the user for whether to use long doubles. | |
283 | case "$uselongdouble" in | |
284 | $define|true|[yY]*) d_Gconvert='sprintf((b),"%.*Lg",(n),(x))' ;; | |
285 | esac | |
286 | EOCBU | |
287 | ||
313489a2 | 288 | # |
e60a08f8 JH |
289 | # Unset temporary variables no more needed. |
290 | # | |
291 | ||
292 | unset _DEC_cc_style | |
293 | ||
294 | # | |
8e964347 AB |
295 | # History: |
296 | # | |
85ab1d1d JH |
297 | # perl5.005_51: |
298 | # | |
299 | # September-1998 Jarkko Hietaniemi <jhi@iki.fi> | |
300 | # | |
301 | # * Added the -DNO_EFF_ONLY_OK flag ('use filetest;' support). | |
302 | # | |
313489a2 SB |
303 | # perl5.004_57: |
304 | # | |
305 | # 19-Dec-1997 Spider Boardman <spider@Orb.Nashua.NH.US> | |
306 | # | |
85ab1d1d | 307 | # * Newer Digital UNIX compilers enforce signaling for NaN without |
313489a2 SB |
308 | # -ieee. Added -fprm d at the same time since it's friendlier for |
309 | # embedding. | |
310 | # | |
311 | # * Fixed the library search path to match cc, ld, and /sbin/loader. | |
312 | # | |
313 | # * Default to building -Duseshrplib on newer systems. -Uuseshrplib | |
314 | # still overrides. | |
315 | # | |
316 | # * Fix -pthread additions for useshrplib. ld has no -pthread option. | |
317 | # | |
318 | # | |
723e14d4 SB |
319 | # perl5.004_04: |
320 | # | |
321 | # 19-Sep-1997 Spider Boardman <spider@Orb.Nashua.NH.US> | |
322 | # | |
323 | # * libnet on Digital UNIX is for JAVA, not for sockets. | |
324 | # | |
325 | # | |
b971f6e4 | 326 | # perl5.003_28: |
327 | # | |
328 | # 22-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
329 | # | |
330 | # * Restructuring Spider's suggestions. | |
331 | # | |
332 | # * Older Digital UNIXes cannot handle -Olimit ... for $lddlflags. | |
333 | # | |
334 | # * ld -s cannot be used in older Digital UNIXes when doing shared. | |
335 | # | |
336 | # | |
337 | # 21-Feb-1997 Spider Boardman <spider@Orb.Nashua.NH.US> | |
338 | # | |
339 | # * -hidden removed. | |
340 | # | |
341 | # * -DSTANDARD_C removed. | |
342 | # | |
343 | # * -D_INTRINSICS added. (that -fast does not seem to buy much confirmed) | |
344 | # | |
345 | # * odbm not in libc, only ndbm. Therefore dbm back to $libswanted. | |
346 | # | |
347 | # * -msym for the newer runtime loaders. | |
348 | # | |
349 | # * $optimize also in $lddflags. | |
350 | # | |
351 | # | |
e60a08f8 JH |
352 | # perl5.003_27: |
353 | # | |
354 | # 18-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
355 | # | |
356 | # * unset _DEC_cc_style and more commentary on -std. | |
357 | # | |
358 | # | |
dfa3a3d3 CS |
359 | # perl5.003_26: |
360 | # | |
361 | # 15-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
362 | # | |
e60a08f8 | 363 | # * -std and -ansi. |
dfa3a3d3 CS |
364 | # |
365 | # | |
f2c69087 JH |
366 | # perl5.003_24: |
367 | # | |
368 | # 30-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
369 | # | |
370 | # * Fixing the note on -DDEBUGGING. | |
371 | # | |
372 | # * Note on -O5 -fast. | |
373 | # | |
374 | # | |
8a019ce7 JH |
375 | # perl5.003_23: |
376 | # | |
377 | # 26-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
378 | # | |
379 | # * Notes on how to do both optimisation and debugging. | |
380 | # | |
381 | # | |
382 | # 25-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> | |
383 | # | |
384 | # * Remove unneeded libraries from $libswanted: PW, bsd, c, dbm | |
385 | # | |
386 | # * Restructure the $lddlflags build. | |
387 | # | |
388 | # * $optimize based on which compiler we have. | |
389 | # | |
390 | # | |
8e964347 AB |
391 | # perl5.003_22: |
392 | # | |
393 | # 23-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> | |
394 | # | |
395 | # * Added comments 'how to create a debugging version of perl' | |
396 | # | |
397 | # * Fixed logic of this script to prevent stripping of shared | |
398 | # objects by the loader (see ld man page for -s) is debugging | |
399 | # is set via the -g switch. | |
400 | # | |
401 | # | |
402 | # 21-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> | |
403 | # | |
404 | # * now 'dl' is always removed from libswanted. Not only if | |
405 | # optimize is an empty string. | |
406 | # | |
407 | # | |
408 | # 17-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> | |
409 | # | |
410 | # * Removed 'dl' from libswanted: When the FreePort binary | |
411 | # translator for Sun binaries is installed Configure concludes | |
412 | # that it should use libdl.x.yz.fpx.so :-( | |
413 | # Because the dlopen, dlclose,... calls are in the | |
414 | # C library it not necessary at all to check for the | |
415 | # dl library. Therefore dl is removed from libswanted. | |
416 | # | |
417 | # | |
418 | # 1-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> | |
419 | # | |
420 | # * Set -Olimit to 3200 because perl_yylex.c got too big | |
421 | # for the optimizer. | |
422 | # |