| 1 | # hints/dec_osf.sh |
| 2 | |
| 3 | # * If you want to debug perl or want to send a |
| 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 | # |
| 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 | # |
| 13 | # * gcc can always have both -g and optimisation on. |
| 14 | # |
| 15 | # * debugging optimised code, no matter what compiler |
| 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 | # |
| 22 | # * Configure will automatically add the often quoted |
| 23 | # -DDEBUGGING for you if the -g is specified. |
| 24 | # |
| 25 | # * There is even more optimisation available in the new |
| 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. |
| 33 | # |
| 34 | # * The -std is needed because the following compiled |
| 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 | # |
| 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 | # |
| 53 | |
| 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 | |
| 61 | cc=${cc:-cc} |
| 62 | |
| 63 | # Intentional leading tabs. |
| 64 | myosvers="`/usr/sbin/sizer -v 2>/dev/null || uname -r`" |
| 65 | unamer="`uname -r`" |
| 66 | |
| 67 | # Fancy compiler suites use optimising linker as well as compiler. |
| 68 | # <spider@Orb.Nashua.NH.US> |
| 69 | case "$unamer" in |
| 70 | *[123].*) # old loader |
| 71 | lddlflags="$lddlflags -O3" |
| 72 | ;; |
| 73 | *) if $test "X$optimize" = "X$undef"; then |
| 74 | lddlflags="$lddlflags -msym" |
| 75 | else |
| 76 | case "$myosvers" in |
| 77 | *4.0D*) |
| 78 | # QAR 56761: -O4 + .so may produce broken code, |
| 79 | # fixed in 4.0E or better. |
| 80 | ;; |
| 81 | *) |
| 82 | lddlflags="$lddlflags $optimize" |
| 83 | ;; |
| 84 | esac |
| 85 | # -msym: If using a sufficiently recent /sbin/loader, |
| 86 | # keep the module symbols with the modules. |
| 87 | lddlflags="$lddlflags -msym $_lddlflags_strict_ansi" |
| 88 | fi |
| 89 | ;; |
| 90 | esac |
| 91 | # Yes, the above loses if gcc does not use the system linker. |
| 92 | # If that happens, let me know about it. <jhi@iki.fi> |
| 93 | |
| 94 | # Because there is no other handy way to recognize 3.X. |
| 95 | case "$unamer" in |
| 96 | *3.*) ccflags="$ccflags -DDEC_OSF1_3_X" ;; |
| 97 | esac |
| 98 | |
| 99 | case "`$cc -v 2>&1 | grep cc`" in |
| 100 | *gcc*) isgcc=gcc ;; |
| 101 | esac |
| 102 | |
| 103 | # do NOT, I repeat, *NOT* take away the leading tabs |
| 104 | # Configure Black Magic (TM) |
| 105 | # reset |
| 106 | _DEC_cc_style= |
| 107 | case "$isgcc" in |
| 108 | gcc) if [ "X$gccversion" = "X" ]; then |
| 109 | # Done too late in Configure if hinted |
| 110 | gccversion=`$cc -dumpversion` |
| 111 | fi |
| 112 | set $gccversion |
| 113 | if test "$1" -lt 2 -o \( "$1" -eq 2 -a \( "$2" -lt 95 -o \( "$2" -eq 95 -a "$3" -lt 3 \) \) \); then |
| 114 | cat >&4 <<EOF |
| 115 | |
| 116 | *** Your cc seems to be gcc and its version ($gccversion) seems to be |
| 117 | *** less than 2.95.3. This is not a good idea since old versions of gcc |
| 118 | *** are known to produce buggy code when compiling Perl (and no doubt for |
| 119 | *** other programs, too). |
| 120 | *** |
| 121 | *** Therefore, I strongly suggest upgrading your gcc. (Why don't you use |
| 122 | *** the vendor cc is also a good question. It comes with the operating |
| 123 | *** system, produces good code, and is very ANSI C fastidious.) |
| 124 | |
| 125 | Cannot continue, aborting. |
| 126 | |
| 127 | EOF |
| 128 | exit 1 |
| 129 | fi |
| 130 | if test "$1" -eq 2 -a "$2" -eq 95 -a "$3" -le 2; then |
| 131 | cat >&4 <<EOF |
| 132 | |
| 133 | *** Note that as of gcc 2.95.2 (19991024) and Perl 5.6.0 (March 2000) |
| 134 | *** if the said Perl is compiled with the said gcc the lib/sdbm test |
| 135 | *** may dump core (meaning that the SDBM_File extension is unusable). |
| 136 | *** As this core dump never happens with the vendor cc, this is most |
| 137 | *** probably a lingering bug in gcc. Therefore unless you have a better |
| 138 | *** gcc installation you are still better off using the vendor cc. |
| 139 | |
| 140 | Since you explicitly chose gcc, I assume that you know what are doing. |
| 141 | |
| 142 | EOF |
| 143 | fi |
| 144 | # -ansi is fine for gcc in Tru64 (-ansi is not universally so). |
| 145 | _ccflags_strict_ansi="-ansi" |
| 146 | ;; |
| 147 | *) # compile something. |
| 148 | cat >try.c <<EOF |
| 149 | int main() { return 0; } |
| 150 | EOF |
| 151 | ccversion=`cc -V | awk '/(Compaq|DEC) C/ {print $3}' | grep '^V'` |
| 152 | # the main point is the '-v' flag of 'cc'. |
| 153 | case "`cc -v -c try.c 2>&1`" in |
| 154 | */gemc_cc*) # we have the new DEC GEM CC |
| 155 | _DEC_cc_style=new |
| 156 | ;; |
| 157 | *) # we have the old MIPS CC |
| 158 | _DEC_cc_style=old |
| 159 | ;; |
| 160 | esac |
| 161 | # We need to figure out whether -c99 is a valid flag to use. |
| 162 | # If it is, we can use it for being nauseatingly C99 ANSI -- |
| 163 | # but even then the lddlflags needs to stay -std1. |
| 164 | # If it is not, we must use -std1 for both flags. |
| 165 | # |
| 166 | case "`cc -c99 try.c 2>&1`" in |
| 167 | *"-c99: Unknown flag"*) |
| 168 | _ccflags_strict_ansi="-std1" |
| 169 | ;; |
| 170 | *) # However, use the -c99 only if compiling for |
| 171 | # -DPERL_MEM_LOG, where the C99 feature __func__ |
| 172 | # is useful to have. Otherwise use the good old |
| 173 | # -std1 so that we stay C89 strict, which the goal |
| 174 | # of the Perl C code base (no //, no code between |
| 175 | # declarations, etc). Moreover, the Tru64 cc is |
| 176 | # not fully C99, and most probably never will be. |
| 177 | # |
| 178 | # The -DPERL_MEM_LOG can be either in ccflags |
| 179 | # (if using an old config.sh) or in the command line |
| 180 | # (which has been stowed away in UU/cmdline.opt). |
| 181 | # |
| 182 | case "$ccflags `cat UU/cmdline.opt`" in |
| 183 | *-DPERL_MEM_LOG*) _ccflags_strict_ansi="-c99" ;; |
| 184 | *) _ccflags_strict_ansi="-std1" ;; |
| 185 | esac |
| 186 | ;; |
| 187 | esac |
| 188 | _lddlflags_strict_ansi="-std1" |
| 189 | # -no_ansi_alias because Perl code is not that strict |
| 190 | # (also gcc uses by default -fno-strict-aliasing). |
| 191 | case "$unamer" in |
| 192 | *[1234].*) ;; |
| 193 | *5.*) _ccflags_strict_ansi="$_ccflags_strict_ansi -no_ansi_alias" ;; |
| 194 | esac |
| 195 | # Cleanup. |
| 196 | rm -f try.c try.o |
| 197 | ;; |
| 198 | esac |
| 199 | |
| 200 | # Be nauseatingly ANSI |
| 201 | ccflags="$ccflags $_ccflags_strict_ansi" |
| 202 | |
| 203 | # g++ needs a lot of definitions to see the same set of |
| 204 | # prototypes from <unistd.h> et alia as cxx/cc see. |
| 205 | # Note that we cannot define _XOPEN_SOURCE_EXTENDED or |
| 206 | # its moral equivalent, _XOPEN_SOURCE=500 (which would |
| 207 | # define a lot of the required prototypes for us), because |
| 208 | # the gcc-processed version of <sys/wait.h> contains fatally |
| 209 | # conflicting prototypes for wait3(). The _SOCKADDR_LEN is |
| 210 | # needed to get struct sockaddr and struct sockaddr_in to align. |
| 211 | case "$cc" in |
| 212 | *g++*) ccflags="$ccflags -D_XOPEN_SOURCE -D_OSF_SOURCE -D_AES_SOURCE -D_BSD -D_POSIX_C_SOURCE=199309L -D_POSIX_PII_SOCKET -D_SOCKADDR_LEN" ;; |
| 213 | esac |
| 214 | |
| 215 | # for gcc the Configure knows about the -fpic: |
| 216 | # position-independent code for dynamic loading |
| 217 | |
| 218 | # we want optimisation |
| 219 | |
| 220 | case "$optimize" in |
| 221 | '') case "$isgcc" in |
| 222 | gcc) optimize='-O3' ;; |
| 223 | *) case "$_DEC_cc_style" in |
| 224 | new) optimize='-O4' ;; |
| 225 | old) optimize='-O2 -Olimit 3200' ;; |
| 226 | esac |
| 227 | ccflags="$ccflags -D_INTRINSICS" |
| 228 | ;; |
| 229 | esac |
| 230 | ;; |
| 231 | esac |
| 232 | |
| 233 | case "$isgcc" in |
| 234 | gcc) ;; |
| 235 | *) case "$optimize" in |
| 236 | *-O*) # With both -O and -g, the -g must be -g3. |
| 237 | optimize="`echo $optimize | sed 's/-g[1-4]*/-g3/'`" |
| 238 | ;; |
| 239 | esac |
| 240 | ;; |
| 241 | esac |
| 242 | |
| 243 | ## Optimization limits |
| 244 | case "$isgcc" in |
| 245 | gcc) # gcc 3.2.1 wants a lot of memory for -O3'ing toke.c |
| 246 | cat >try.c <<EOF |
| 247 | #include <stdio.h> |
| 248 | #include <sys/resource.h> |
| 249 | |
| 250 | int main () |
| 251 | { |
| 252 | struct rlimit rl; |
| 253 | int i = getrlimit (RLIMIT_DATA, &rl); |
| 254 | printf ("%d\n", rl.rlim_cur / (1024 * 1024)); |
| 255 | } /* main */ |
| 256 | EOF |
| 257 | $cc -o try $ccflags $ldflags try.c |
| 258 | maxdsiz=`./try` |
| 259 | rm -f try try.c core |
| 260 | if [ $maxdsiz -lt 256 ]; then |
| 261 | # less than 256 MB is probably not enough to optimize toke.c with gcc -O3 |
| 262 | cat <<EOM >&4 |
| 263 | |
| 264 | Your process datasize is limited to $maxdsiz MB, which is (sadly) not |
| 265 | always enough to fully optimize some source code files of Perl, |
| 266 | at least 256 MB seems to be necessary as of Perl 5.8.0. I'll try to |
| 267 | use a lower optimization level for those parts. You could either try |
| 268 | using your shell's ulimit/limit/limits command to raise your datasize |
| 269 | (assuming the system-wide hard resource limits allow you to go higher), |
| 270 | or if you can't go higher and if you are a sysadmin, and you *do* want |
| 271 | the full optimization, you can tune the 'max_per_proc_data_size' |
| 272 | kernel parameter: see man sysconfigtab, and man sys_attrs_proc. |
| 273 | |
| 274 | EOM |
| 275 | toke_cflags='optimize=-O2' |
| 276 | fi |
| 277 | ;; |
| 278 | esac |
| 279 | |
| 280 | # The patch 23787 |
| 281 | # http://public.activestate.com/cgi-bin/perlbrowse?patch=23787 |
| 282 | # broke things for gcc (at least gcc 3.3) so that many of the pack() |
| 283 | # checksum tests for formats L, j, J, especially when combined |
| 284 | # with the < and > specifiers, started to fail if compiled with plain -O3. |
| 285 | case "$isgcc" in |
| 286 | gcc) |
| 287 | pp_pack_cflags='optimize="-O3 -fno-cse-skip-blocks"' |
| 288 | ;; |
| 289 | esac |
| 290 | |
| 291 | # we want dynamic fp rounding mode, and we want ieee exception semantics |
| 292 | case "$isgcc" in |
| 293 | gcc) ccflags="$ccflags -mfp-rounding-mode=d -mieee" ;; |
| 294 | *) case "$_DEC_cc_style" in |
| 295 | new) ccflags="$ccflags -fprm d -ieee" ;; |
| 296 | esac |
| 297 | ;; |
| 298 | esac |
| 299 | |
| 300 | # Make glibpth agree with the compiler suite. Note that /shlib |
| 301 | # is not here. That's on purpose. Even though that's where libc |
| 302 | # really lives from V4.0 on, the linker (and /sbin/loader) won't |
| 303 | # look there by default. The sharable /sbin utilities were all |
| 304 | # built with "-Wl,-rpath,/shlib" to get around that. This makes |
| 305 | # no attempt to figure out the additional location(s) searched by |
| 306 | # gcc, since not all versions of gcc are easily coerced into |
| 307 | # revealing that information. |
| 308 | glibpth="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc" |
| 309 | glibpth="$glibpth /usr/lib /usr/local/lib /var/shlib" |
| 310 | |
| 311 | # dlopen() is in libc |
| 312 | libswanted="`echo $libswanted | sed -e 's/ dl / /'`" |
| 313 | |
| 314 | # libPW contains nothing useful for perl |
| 315 | libswanted="`echo $libswanted | sed -e 's/ PW / /'`" |
| 316 | |
| 317 | # libnet contains nothing useful for perl here, and doesn't work |
| 318 | libswanted="`echo $libswanted | sed -e 's/ net / /'`" |
| 319 | |
| 320 | # libbsd contains nothing used by perl that is not already in libc |
| 321 | libswanted="`echo $libswanted | sed -e 's/ bsd / /'`" |
| 322 | |
| 323 | # libc need not be separately listed |
| 324 | libswanted="`echo $libswanted | sed -e 's/ c / /'`" |
| 325 | |
| 326 | # ndbm is already in libc |
| 327 | libswanted="`echo $libswanted | sed -e 's/ ndbm / /'`" |
| 328 | |
| 329 | # the basic lddlflags used always |
| 330 | lddlflags='-shared -expect_unresolved "*"' |
| 331 | |
| 332 | # If debugging or (old systems and doing shared) |
| 333 | # then do not strip the lib, otherwise, strip. |
| 334 | # As noted above the -DDEBUGGING is added automagically by Configure if -g. |
| 335 | case "$optimize" in |
| 336 | *-g*) ;; # left intentionally blank |
| 337 | *) case "$unamer" in |
| 338 | *[123].*) |
| 339 | case "$useshrplib" in |
| 340 | false|undef|'') lddlflags="$lddlflags -s" ;; |
| 341 | esac |
| 342 | ;; |
| 343 | *) lddlflags="$lddlflags -s" |
| 344 | ;; |
| 345 | esac |
| 346 | ;; |
| 347 | esac |
| 348 | |
| 349 | # |
| 350 | # Make embedding in things like INN and Apache more memory friendly. |
| 351 | # Keep it overridable on the Configure command line, though, so that |
| 352 | # "-Uuseshrplib" prevents this default. |
| 353 | # |
| 354 | |
| 355 | case "$_DEC_cc_style.$useshrplib" in |
| 356 | new.) useshrplib="$define" ;; |
| 357 | esac |
| 358 | |
| 359 | # The EFF_ONLY_OK from <sys/access.h> is present but dysfunctional for |
| 360 | # [RWX]_OK as of Digital UNIX 4.0[A-D]?. If and when this gets fixed, |
| 361 | # please adjust this appropriately. See also pp_sys.c just before the |
| 362 | # emulate_eaccess(). |
| 363 | |
| 364 | # Fixed in V5.0A. |
| 365 | case "$myosvers" in |
| 366 | *5.0[A-Z]*|*5.[1-9]*|*[6-9].[0-9]*) |
| 367 | : ok |
| 368 | ;; |
| 369 | *) |
| 370 | # V5.0 or previous |
| 371 | pp_sys_cflags='ccflags="$ccflags -DNO_EFF_ONLY_OK"' |
| 372 | ;; |
| 373 | esac |
| 374 | |
| 375 | # The off_t is already 8 bytes, so we do have largefileness. |
| 376 | |
| 377 | cat > UU/usethreads.cbu <<'EOCBU' |
| 378 | # This script UU/usethreads.cbu will get 'called-back' by Configure |
| 379 | # after it has prompted the user for whether to use threads. |
| 380 | case "$usethreads" in |
| 381 | $define|true|[yY]*) |
| 382 | # In Tru64 V5 (at least V5.1A, V5.1B) gcc (at least 3.2.2) |
| 383 | # cannot be used to compile a threaded Perl. |
| 384 | cat > pthread.c <<EOF |
| 385 | #include <pthread.h> |
| 386 | extern int foo; |
| 387 | EOF |
| 388 | $cc -c pthread.c 2> pthread.err |
| 389 | if egrep -q "unrecognized compiler|syntax error" pthread.err; then |
| 390 | cat >&4 <<EOF |
| 391 | *** |
| 392 | *** I'm sorry but your C compiler ($cc) cannot be used to |
| 393 | *** compile Perl with threads. The system C compiler should work. |
| 394 | *** |
| 395 | |
| 396 | Cannot continue, aborting. |
| 397 | |
| 398 | EOF |
| 399 | rm -f pthread.* |
| 400 | exit 1 |
| 401 | fi |
| 402 | rm -f pthread.* |
| 403 | # Threads interfaces changed with V4.0. |
| 404 | case "$isgcc" in |
| 405 | gcc) |
| 406 | ccflags="-D_REENTRANT $ccflags" |
| 407 | ;; |
| 408 | *) case "$unamer" in |
| 409 | *[123].*) ccflags="-threads $ccflags" ;; |
| 410 | *) ccflags="-pthread $ccflags" ;; |
| 411 | esac |
| 412 | ;; |
| 413 | esac |
| 414 | case "$unamer" in |
| 415 | *[123].*) libswanted="$libswanted pthreads mach exc c_r" ;; |
| 416 | *) libswanted="$libswanted pthread exc" ;; |
| 417 | esac |
| 418 | |
| 419 | case "$usemymalloc" in |
| 420 | '') |
| 421 | usemymalloc='n' |
| 422 | ;; |
| 423 | esac |
| 424 | # These symbols are renamed in <time.h> so |
| 425 | # that the Configure hasproto doesn't see them. |
| 426 | d_asctime_r_proto="$define" |
| 427 | d_ctime_r_proto="$define" |
| 428 | d_gmtime_r_proto="$define" |
| 429 | d_localtime_r_proto="$define" |
| 430 | ;; |
| 431 | esac |
| 432 | EOCBU |
| 433 | |
| 434 | # malloc wrap works |
| 435 | case "$usemallocwrap" in |
| 436 | '') usemallocwrap='define' ;; |
| 437 | esac |
| 438 | |
| 439 | cat > UU/uselongdouble.cbu <<'EOCBU' |
| 440 | # This script UU/uselongdouble.cbu will get 'called-back' by Configure |
| 441 | # after it has prompted the user for whether to use long doubles. |
| 442 | case "$uselongdouble" in |
| 443 | $define|true|[yY]*) |
| 444 | case "$myosvers" in |
| 445 | *[1-4].0*) cat >&4 <<EOF |
| 446 | |
| 447 | *** |
| 448 | *** Sorry, you cannot use long doubles in pre-V5.0 releases of Tru64. |
| 449 | *** |
| 450 | |
| 451 | Cannot continue, aborting. |
| 452 | |
| 453 | EOF |
| 454 | exit 1 |
| 455 | ;; |
| 456 | *) |
| 457 | # Test whether libc's been fixed yet for long doubles. |
| 458 | cat >try.c <<\TRY |
| 459 | #include <stdio.h> |
| 460 | int main(int argc, char **argv) |
| 461 | { |
| 462 | unsigned long uvmax = ~0UL; |
| 463 | long double ld = uvmax + 0.0L; |
| 464 | char buf1[30], buf2[30]; |
| 465 | |
| 466 | (void) sprintf(buf1, "%lu", uvmax); |
| 467 | (void) sprintf(buf2, "%.0Lf", ld); |
| 468 | return strcmp(buf1, buf2) != 0; |
| 469 | } |
| 470 | TRY |
| 471 | # Don't bother trying to work with Configure's idea of |
| 472 | # cc and the various flags. This might not work as-is |
| 473 | # with gcc -- but we're testing libc, not the compiler. |
| 474 | if cc -o try $_ccflags_strict_ansi try.c && ./try |
| 475 | then |
| 476 | : ok |
| 477 | else |
| 478 | cat <<\UGLY >&4 |
| 479 | ! |
| 480 | Warning! Your libc has not yet been patched so that its "%Lf" format for |
| 481 | printing long doubles shows all the significant digits. You will get errors |
| 482 | in the t/op/numconvert test because of this. (The data is still good |
| 483 | internally, and the "%e" format of printf() or sprintf() in perl will still |
| 484 | produce valid results.) See README.tru64 for additional details. |
| 485 | |
| 486 | Continuing anyway. |
| 487 | ! |
| 488 | UGLY |
| 489 | fi |
| 490 | $rm -f try try.c |
| 491 | esac |
| 492 | ;; |
| 493 | esac |
| 494 | EOCBU |
| 495 | |
| 496 | case "$myosvers" in |
| 497 | *[1-4].0*) d_modfl=undef ;; # must wait till 5.0 |
| 498 | esac |
| 499 | |
| 500 | # Keep that leading tab. |
| 501 | old_LD_LIBRARY_PATH=$LD_LIBRARY_PATH |
| 502 | for p in $loclibpth |
| 503 | do |
| 504 | if test -d $p; then |
| 505 | echo "Appending $p to LD_LIBRARY_PATH." >& 4 |
| 506 | case "$LD_LIBRARY_PATH" in |
| 507 | '') LD_LIBRARY_PATH=$p ;; |
| 508 | *) LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$p ;; |
| 509 | esac |
| 510 | fi |
| 511 | done |
| 512 | case "$LD_LIBRARY_PATH" in |
| 513 | "$old_LD_LIBRARY_PATH") ;; |
| 514 | *) echo "LD_LIBRARY_PATH is now $LD_LIBRARY_PATH." >& 4 ;; |
| 515 | esac |
| 516 | case "$LD_LIBRARY_PATH" in |
| 517 | '') ;; |
| 518 | * ) export LD_LIBRARY_PATH ;; |
| 519 | esac |
| 520 | |
| 521 | # Enforce strict data. |
| 522 | case "$isgcc" in |
| 523 | gcc) ;; |
| 524 | *) # -trapuv poisons uninitialized stack with |
| 525 | # 0xfff58005fff58005 which is as a pointer a segmentation fault and |
| 526 | # as a floating point a signaling NaN. As integers/longs that causes |
| 527 | # no traps but at least it is not zero. |
| 528 | # -readonly_strings moves string constants into read-only section |
| 529 | # which hopefully means that modifying them leads into segmentation |
| 530 | # faults. |
| 531 | # |
| 532 | for i in -trapuv -readonly_strings |
| 533 | do |
| 534 | case "$ccflags" in |
| 535 | *$i*) ;; |
| 536 | *) ccflags="$ccflags $i" ;; |
| 537 | esac |
| 538 | done |
| 539 | ;; |
| 540 | esac |
| 541 | |
| 542 | # |
| 543 | # Unset temporary variables no more needed. |
| 544 | # |
| 545 | |
| 546 | unset _DEC_cc_style |
| 547 | |
| 548 | # |
| 549 | # History: |
| 550 | # |
| 551 | # perl5.005_51: |
| 552 | # |
| 553 | # September-1998 Jarkko Hietaniemi <jhi@iki.fi> |
| 554 | # |
| 555 | # * Added the -DNO_EFF_ONLY_OK flag ('use filetest;' support). |
| 556 | # |
| 557 | # perl5.004_57: |
| 558 | # |
| 559 | # 19-Dec-1997 Spider Boardman <spider@Orb.Nashua.NH.US> |
| 560 | # |
| 561 | # * Newer Digital UNIX compilers enforce signaling for NaN without |
| 562 | # -ieee. Added -fprm d at the same time since it's friendlier for |
| 563 | # embedding. |
| 564 | # |
| 565 | # * Fixed the library search path to match cc, ld, and /sbin/loader. |
| 566 | # |
| 567 | # * Default to building -Duseshrplib on newer systems. -Uuseshrplib |
| 568 | # still overrides. |
| 569 | # |
| 570 | # * Fix -pthread additions for useshrplib. ld has no -pthread option. |
| 571 | # |
| 572 | # |
| 573 | # perl5.004_04: |
| 574 | # |
| 575 | # 19-Sep-1997 Spider Boardman <spider@Orb.Nashua.NH.US> |
| 576 | # |
| 577 | # * libnet on Digital UNIX is for JAVA, not for sockets. |
| 578 | # |
| 579 | # |
| 580 | # perl5.003_28: |
| 581 | # |
| 582 | # 22-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> |
| 583 | # |
| 584 | # * Restructuring Spider's suggestions. |
| 585 | # |
| 586 | # * Older Digital UNIXes cannot handle -Olimit ... for $lddlflags. |
| 587 | # |
| 588 | # * ld -s cannot be used in older Digital UNIXes when doing shared. |
| 589 | # |
| 590 | # |
| 591 | # 21-Feb-1997 Spider Boardman <spider@Orb.Nashua.NH.US> |
| 592 | # |
| 593 | # * -hidden removed. |
| 594 | # |
| 595 | # * -DSTANDARD_C removed. |
| 596 | # |
| 597 | # * -D_INTRINSICS added. (that -fast does not seem to buy much confirmed) |
| 598 | # |
| 599 | # * odbm not in libc, only ndbm. Therefore dbm back to $libswanted. |
| 600 | # |
| 601 | # * -msym for the newer runtime loaders. |
| 602 | # |
| 603 | # * $optimize also in $lddflags. |
| 604 | # |
| 605 | # |
| 606 | # perl5.003_27: |
| 607 | # |
| 608 | # 18-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> |
| 609 | # |
| 610 | # * unset _DEC_cc_style and more commentary on -std. |
| 611 | # |
| 612 | # |
| 613 | # perl5.003_26: |
| 614 | # |
| 615 | # 15-Feb-1997 Jarkko Hietaniemi <jhi@iki.fi> |
| 616 | # |
| 617 | # * -std and -ansi. |
| 618 | # |
| 619 | # |
| 620 | # perl5.003_24: |
| 621 | # |
| 622 | # 30-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> |
| 623 | # |
| 624 | # * Fixing the note on -DDEBUGGING. |
| 625 | # |
| 626 | # * Note on -O5 -fast. |
| 627 | # |
| 628 | # |
| 629 | # perl5.003_23: |
| 630 | # |
| 631 | # 26-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> |
| 632 | # |
| 633 | # * Notes on how to do both optimisation and debugging. |
| 634 | # |
| 635 | # |
| 636 | # 25-Jan-1997 Jarkko Hietaniemi <jhi@iki.fi> |
| 637 | # |
| 638 | # * Remove unneeded libraries from $libswanted: PW, bsd, c, dbm |
| 639 | # |
| 640 | # * Restructure the $lddlflags build. |
| 641 | # |
| 642 | # * $optimize based on which compiler we have. |
| 643 | # |
| 644 | # |
| 645 | # perl5.003_22: |
| 646 | # |
| 647 | # 23-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> |
| 648 | # |
| 649 | # * Added comments 'how to create a debugging version of perl' |
| 650 | # |
| 651 | # * Fixed logic of this script to prevent stripping of shared |
| 652 | # objects by the loader (see ld man page for -s) is debugging |
| 653 | # is set via the -g switch. |
| 654 | # |
| 655 | # |
| 656 | # 21-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> |
| 657 | # |
| 658 | # * now 'dl' is always removed from libswanted. Not only if |
| 659 | # optimize is an empty string. |
| 660 | # |
| 661 | # |
| 662 | # 17-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> |
| 663 | # |
| 664 | # * Removed 'dl' from libswanted: When the FreePort binary |
| 665 | # translator for Sun binaries is installed Configure concludes |
| 666 | # that it should use libdl.x.yz.fpx.so :-( |
| 667 | # Because the dlopen, dlclose,... calls are in the |
| 668 | # C library it not necessary at all to check for the |
| 669 | # dl library. Therefore dl is removed from libswanted. |
| 670 | # |
| 671 | # |
| 672 | # 1-Jan-1997 Achim Bohnet <ach@rosat.mpe-garching.mpg.de> |
| 673 | # |
| 674 | # * Set -Olimit to 3200 because perl_yylex.c got too big |
| 675 | # for the optimizer. |
| 676 | # |
| 677 | |