Commit | Line | Data |
---|---|---|
1aef975c | 1 | # hints/linux.sh |
a0d0e21e | 2 | # Original version by rsanders |
1fc4cb55 | 3 | # Additional support by Kenneth Albanowski <kjahds@kjahds.com> |
1aef975c | 4 | # |
232e078e AD |
5 | # ELF support by H.J. Lu <hjl@nynexst.com> |
6 | # Additional info from Nigel Head <nhead@ESOC.bitnet> | |
7 | # and Kenneth Albanowski <kjahds@kjahds.com> | |
1aef975c | 8 | # |
c3404dc3 | 9 | # Consolidated by Andy Dougherty <doughera@lafayette.edu> |
1fc4cb55 | 10 | # |
9bed9d38 | 11 | # Updated Thu Feb 8 11:56:10 EST 1996 |
ef0c9946 | 12 | |
c3404dc3 | 13 | # Updated Thu May 30 10:50:22 EDT 1996 by <doughera@lafayette.edu> |
ef0c9946 | 14 | |
15 | # Updated Fri Jun 21 11:07:54 EDT 1996 | |
16 | # NDBM support for ELF renabled by <kjahds@kjahds.com> | |
232e078e | 17 | |
f3db1d4d CS |
18 | # No version of Linux supports setuid scripts. |
19 | d_suidsafe='undef' | |
f3db1d4d | 20 | |
1cfa4ec7 GS |
21 | # Debian and Red Hat, and perhaps other vendors, provide both runtime and |
22 | # development packages for some libraries. The runtime packages contain shared | |
23 | # libraries with version information in their names (e.g., libgdbm.so.1.7.3); | |
24 | # the development packages supplement this with versionless shared libraries | |
25 | # (e.g., libgdbm.so). | |
26 | # | |
27 | # If you want to link against such a library, you must install the development | |
28 | # version of the package. | |
29 | # | |
30 | # These packages use a -dev naming convention in both Debian and Red Hat: | |
31 | # libgdbmg1 (non-development version of GNU libc 2-linked GDBM library) | |
32 | # libgdbmg1-dev (development version of GNU libc 2-linked GDBM library) | |
33 | # So make sure that for any libraries you wish to link Perl with under | |
34 | # Debian or Red Hat you have the -dev packages installed. | |
35 | # | |
36 | # Some operating systems (e.g., Solaris 2.6) will link to a versioned shared | |
37 | # library implicitly. For example, on Solaris, `ld foo.o -lgdbm' will find an | |
38 | # appropriate version of libgdbm, if one is available; Linux, however, doesn't | |
39 | # do the implicit mapping. | |
40 | ignore_versioned_solibs='y' | |
41 | ||
2d1d6bf6 SP |
42 | # BSD compatibility library no longer needed |
43 | # 'kaffe' has a /usr/lib/libnet.so which is not at all relevant for perl. | |
44 | # bind causes issues with several reentrant functions | |
45 | set `echo X "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /' -e 's/ bind / /'` | |
4bf4dbb3 | 46 | shift |
47 | libswanted="$*" | |
1fc4cb55 | 48 | |
a4ea3e34 AD |
49 | # If you have glibc, then report the version for ./myconfig bug reporting. |
50 | # (Configure doesn't need to know the specific version since it just uses | |
51 | # gcc to load the library for all tests.) | |
f443a56e | 52 | # We don't use __GLIBC__ and __GLIBC_MINOR__ because they |
a4ea3e34 AD |
53 | # are insufficiently precise to distinguish things like |
54 | # libc-2.0.6 and libc-2.0.7. | |
55 | if test -L /lib/libc.so.6; then | |
56 | libc=`ls -l /lib/libc.so.6 | awk '{print $NF}'` | |
57 | libc=/lib/$libc | |
58 | fi | |
59 | ||
232e078e AD |
60 | # Configure may fail to find lstat() since it's a static/inline |
61 | # function in <sys/stat.h>. | |
62 | d_lstat=define | |
1aef975c | 63 | |
da0b61dd NC |
64 | # malloc wrap works |
65 | case "$usemallocwrap" in | |
66 | '') usemallocwrap='define' ;; | |
67 | esac | |
68 | ||
f443a56e | 69 | # The system malloc() is about as fast and as frugal as perl's. |
c3404dc3 AD |
70 | # Since the system malloc() has been the default since at least |
71 | # 5.001, we might as well leave it that way. --AD 10 Jan 2002 | |
c07a80fd | 72 | case "$usemymalloc" in |
73 | '') usemymalloc='n' ;; | |
74 | esac | |
1aef975c | 75 | |
06d57135 MHM |
76 | # Check if we're about to use Intel's ICC compiler |
77 | case "`${cc:-cc} -V 2>&1`" in | |
87d05bbe | 78 | *"Intel(R) C++ Compiler"*|*"Intel(R) C Compiler"*) |
06d57135 | 79 | # This is needed for Configure's prototype checks to work correctly |
383f9357 | 80 | # The -mp flag is needed to pass various floating point related tests |
6ae709ad | 81 | # The -no-gcc flag is needed otherwise, icc pretends (poorly) to be gcc |
383f9357 | 82 | ccflags="-we147 -mp -no-gcc $ccflags" |
06d57135 MHM |
83 | # If we're using ICC, we usually want the best performance |
84 | case "$optimize" in | |
85 | '') optimize='-O3' ;; | |
86 | esac | |
87 | ;; | |
6452e86c SP |
88 | *"Sun C"*) |
89 | optimize='-xO2' | |
90 | cccdlflags='-KPIC' | |
91 | lddlflags='-G -Bdynamic' | |
2f7602ba SP |
92 | # Sun C doesn't support gcc attributes, but, in many cases, doesn't |
93 | # complain either. Not all cases, though. | |
94 | d_attribute_format='undef' | |
95 | d_attribute_malloc='undef' | |
96 | d_attribute_nonnull='undef' | |
97 | d_attribute_noreturn='undef' | |
98 | d_attribute_pure='undef' | |
99 | d_attribute_unused='undef' | |
100 | d_attribute_warn_unused_result='undef' | |
6452e86c | 101 | ;; |
06d57135 MHM |
102 | esac |
103 | ||
1aef975c | 104 | case "$optimize" in |
051e4fe1 | 105 | # use -O2 by default ; -O3 doesn't seem to bring significant benefits with gcc |
be92ff21 RGS |
106 | '') |
107 | optimize='-O2' | |
108 | case "`uname -m`" in | |
109 | ppc*) | |
110 | # on ppc, it seems that gcc (at least gcc 3.3.2) isn't happy | |
f88ad257 | 111 | # with -O2 ; so downgrade to -O1. |
be92ff21 RGS |
112 | optimize='-O1' |
113 | ;; | |
f88ad257 SP |
114 | ia64*) |
115 | # This architecture has had various problems with gcc's | |
116 | # in the 3.2, 3.3, and 3.4 releases when optimized to -O2. See | |
117 | # RT #37156 for a discussion of the problem. | |
118 | case "`${cc:-gcc} -v 2>&1`" in | |
119 | *"version 3.2"*|*"version 3.3"*|*"version 3.4"*) | |
120 | ccflags="-fno-delete-null-pointer-checks $ccflags" | |
121 | ;; | |
122 | esac | |
123 | ;; | |
be92ff21 RGS |
124 | esac |
125 | ;; | |
1aef975c AD |
126 | esac |
127 | ||
232e078e AD |
128 | # Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com> |
129 | # for this test. | |
130 | cat >try.c <<'EOM' | |
131 | /* Test for whether ELF binaries are produced */ | |
132 | #include <fcntl.h> | |
133 | #include <stdlib.h> | |
b1e55cab | 134 | #include <unistd.h> |
232e078e AD |
135 | main() { |
136 | char buffer[4]; | |
137 | int i=open("a.out",O_RDONLY); | |
138 | if(i==-1) | |
139 | exit(1); /* fail */ | |
140 | if(read(i,&buffer[0],4)<4) | |
141 | exit(1); /* fail */ | |
142 | if(buffer[0] != 127 || buffer[1] != 'E' || | |
143 | buffer[2] != 'L' || buffer[3] != 'F') | |
144 | exit(1); /* fail */ | |
145 | exit(0); /* succeed (yes, it's ELF) */ | |
146 | } | |
147 | EOM | |
5440bc8e | 148 | if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then |
ef0c9946 | 149 | cat <<'EOM' >&4 |
232e078e AD |
150 | |
151 | You appear to have ELF support. I'll try to use it for dynamic loading. | |
ef0c9946 | 152 | If dynamic loading doesn't work, read hints/linux.sh for further information. |
232e078e | 153 | EOM |
ef0c9946 | 154 | |
232e078e | 155 | else |
ef0c9946 | 156 | cat <<'EOM' >&4 |
16d20bd9 AD |
157 | |
158 | You don't have an ELF gcc. I will use dld if possible. If you are | |
159 | using a version of DLD earlier than 3.2.6, or don't have it at all, you | |
160 | should probably upgrade. If you are forced to use 3.2.4, you should | |
c2960299 AD |
161 | uncomment a couple of lines in hints/linux.sh and restart Configure so |
162 | that shared libraries will be disallowed. | |
16d20bd9 AD |
163 | |
164 | EOM | |
232e078e | 165 | lddlflags="-r $lddlflags" |
5d94fbed AD |
166 | # These empty values are so that Configure doesn't put in the |
167 | # Linux ELF values. | |
168 | ccdlflags=' ' | |
169 | cccdlflags=' ' | |
c07a80fd | 170 | ccflags="-DOVR_DBL_DIG=14 $ccflags" |
1aef975c AD |
171 | so='sa' |
172 | dlext='o' | |
a5f75d66 | 173 | nm_so_opt=' ' |
1aef975c AD |
174 | ## If you are using DLD 3.2.4 which does not support shared libs, |
175 | ## uncomment the next two lines: | |
176 | #ldflags="-static" | |
177 | #so='none' | |
ef0c9946 | 178 | |
179 | # In addition, on some systems there is a problem with perl and NDBM | |
f443a56e JH |
180 | # which causes AnyDBM and NDBM_File to lock up. This is evidenced |
181 | # in the tests as AnyDBM just freezing. Apparently, this only | |
ef0c9946 | 182 | # happens on a.out systems, so we disable NDBM for all a.out linux |
183 | # systems. If someone can suggest a more robust test | |
184 | # that would be appreciated. | |
185 | # | |
186 | # More info: | |
187 | # Date: Wed, 7 Feb 1996 03:21:04 +0900 | |
188 | # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp> | |
189 | # | |
190 | # I tried compiling with DBM support and sure enough things locked up | |
191 | # just as advertised. Checking into it, I found that the lockup was | |
192 | # during the call to dbm_open. Not *in* dbm_open -- but between the call | |
193 | # to and the jump into. | |
f443a56e | 194 | # |
ef0c9946 | 195 | # To make a long story short, making sure that the *.a and *.sa pairs of |
196 | # /usr/lib/lib{m,db,gdbm}.{a,sa} | |
197 | # were perfectly in sync took care of it. | |
198 | # | |
199 | # This will generate a harmless Whoa There! message | |
200 | case "$d_dbm_open" in | |
201 | '') cat <<'EOM' >&4 | |
202 | ||
203 | Disabling ndbm. This will generate a Whoa There message in Configure. | |
204 | Read hints/linux.sh for further information. | |
205 | EOM | |
206 | # You can override this with Configure -Dd_dbm_open | |
207 | d_dbm_open=undef | |
208 | ;; | |
209 | esac | |
232e078e | 210 | fi |
a0d0e21e | 211 | |
c2960299 | 212 | rm -f try.c a.out |
16d20bd9 | 213 | |
e218ce4d | 214 | if /bin/sh -c exit; then |
284c50cc MDLR |
215 | echo '' |
216 | echo 'You appear to have a working bash. Good.' | |
c2960299 | 217 | else |
ef0c9946 | 218 | cat << 'EOM' >&4 |
a0d0e21e | 219 | |
ef0c9946 | 220 | *********************** Warning! ********************* |
221 | It would appear you have a defective bash shell installed. This is likely to | |
222 | give you a failure of op/exec test #5 during the test phase of the build, | |
223 | Upgrading to a recent version (1.14.4 or later) should fix the problem. | |
224 | ****************************************************** | |
a0d0e21e | 225 | EOM |
c2960299 AD |
226 | |
227 | fi | |
16d20bd9 | 228 | |
284c50cc MDLR |
229 | # On SPARClinux, |
230 | # The following csh consistently coredumped in the test directory | |
231 | # "/home/mikedlr/perl5.003_94/t", though not most other directories. | |
232 | ||
233 | #Name : csh Distribution: Red Hat Linux (Rembrandt) | |
234 | #Version : 5.2.6 Vendor: Red Hat Software | |
235 | #Release : 3 Build Date: Fri May 24 19:42:14 1996 | |
236 | #Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com | |
237 | #Group : Shells Source RPM: csh-5.2.6-3.src.rpm | |
238 | #Size : 184417 | |
239 | #Description : BSD c-shell | |
240 | ||
241 | # For this reason I suggest using the much bug-fixed tcsh for globbing | |
242 | # where available. | |
243 | ||
3d413b55 JH |
244 | # November 2001: That warning's pretty old now and probably not so |
245 | # relevant, especially since perl now uses File::Glob for globbing. | |
246 | # We'll still look for tcsh, but tone down the warnings. | |
247 | # Andy Dougherty, Nov. 6, 2001 | |
248 | if $csh -c 'echo $version' >/dev/null 2>&1; then | |
249 | echo 'Your csh is really tcsh. Good.' | |
250 | else | |
99cae59c | 251 | if xxx=`./UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then |
46fc3d4c | 252 | echo "Found tcsh. I'll use it for globbing." |
253 | # We can't change Configure's setting of $csh, due to the way | |
254 | # Configure handles $d_portable and commands found in $loclist. | |
255 | # We can set the value for CSH in config.h by setting full_csh. | |
256 | full_csh=$xxx | |
3d413b55 JH |
257 | elif [ -f "$csh" ]; then |
258 | echo "Couldn't find tcsh. Csh-based globbing might be broken." | |
46fc3d4c | 259 | fi |
284c50cc | 260 | fi |
dc66995c | 261 | |
92526645 CN |
262 | # Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu> |
263 | # Message-Id: <33EF1634.B36B6500@pobox.com> | |
f443a56e | 264 | # |
17ff8a05 JH |
265 | # The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need |
266 | # special flags passed in order for dynamic loading to work. | |
92526645 | 267 | # instead of the recommended: |
17ff8a05 | 268 | # |
92526645 | 269 | # ccdlflags='-rdynamic' |
f443a56e | 270 | # |
92526645 CN |
271 | # it should be: |
272 | # ccdlflags='-Wl,-E' | |
17ff8a05 JH |
273 | # |
274 | # So if your DR2 (DR3 came out summer 1998, consider upgrading) | |
275 | # has problems with dynamic loading, uncomment the | |
276 | # following three lines, make distclean, and re-Configure: | |
277 | #case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in | |
278 | #'osfmach3ppc') ccdlflags='-Wl,-E' ;; | |
279 | #esac | |
92526645 | 280 | |
f6527d0e AD |
281 | case "`uname -m`" in |
282 | sparc*) | |
7cd1f58a BJ |
283 | case "$cccdlflags" in |
284 | *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;; | |
4cd66402 | 285 | *-fPIC*) ;; |
7cd1f58a BJ |
286 | *) cccdlflags="$cccdlflags -fPIC" ;; |
287 | esac | |
288 | ;; | |
289 | esac | |
290 | ||
f443a56e JH |
291 | # SuSE8.2 has /usr/lib/libndbm* which are ld scripts rather than |
292 | # true libraries. The scripts cause binding against static | |
293 | # version of -lgdbm which is a bad idea. So if we have 'nm' | |
294 | # make sure it can read the file | |
295 | # NI-S 2003/08/07 | |
296 | if [ -r /usr/lib/libndbm.so -a -x /usr/bin/nm ] ; then | |
297 | if /usr/bin/nm /usr/lib/libndbm.so >/dev/null 2>&1 ; then | |
298 | echo 'Your shared -lndbm seems to be a real library.' | |
299 | else | |
300 | echo 'Your shared -lndbm is not a real library.' | |
301 | set `echo X "$libswanted "| sed -e 's/ ndbm / /'` | |
302 | shift | |
303 | libswanted="$*" | |
304 | fi | |
305 | fi | |
306 | ||
307 | ||
308 | # This script UU/usethreads.cbu will get 'called-back' by Configure | |
104d25b7 JH |
309 | # after it has prompted the user for whether to use threads. |
310 | cat > UU/usethreads.cbu <<'EOCBU' | |
311 | case "$usethreads" in | |
312 | $define|true|[yY]*) | |
4d76a344 | 313 | ccflags="-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS $ccflags" |
5d3df70f JS |
314 | if echo $libswanted | grep -v pthread >/dev/null |
315 | then | |
316 | set `echo X "$libswanted "| sed -e 's/ c / pthread c /'` | |
317 | shift | |
318 | libswanted="$*" | |
319 | fi | |
47b8d1e2 | 320 | |
a48ec845 JH |
321 | # Somehow at least in Debian 2.2 these manage to escape |
322 | # the #define forest of <features.h> and <time.h> so that | |
c95a4480 JH |
323 | # the hasproto macro of Configure doesn't see these protos, |
324 | # even with the -D_GNU_SOURCE. | |
47b8d1e2 | 325 | |
a48ec845 | 326 | d_asctime_r_proto="$define" |
47b8d1e2 | 327 | d_crypt_r_proto="$define" |
a48ec845 JH |
328 | d_ctime_r_proto="$define" |
329 | d_gmtime_r_proto="$define" | |
330 | d_localtime_r_proto="$define" | |
01b53dac | 331 | d_random_r_proto="$define" |
47b8d1e2 | 332 | |
104d25b7 JH |
333 | ;; |
334 | esac | |
335 | EOCBU | |
7f2eea8e GS |
336 | |
337 | cat > UU/uselargefiles.cbu <<'EOCBU' | |
f443a56e | 338 | # This script UU/uselargefiles.cbu will get 'called-back' by Configure |
7f2eea8e GS |
339 | # after it has prompted the user for whether to use large files. |
340 | case "$uselargefiles" in | |
341 | ''|$define|true|[yY]*) | |
9422c00b | 342 | # Keep this in the left margin. |
45c9e83b | 343 | ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" |
9422c00b | 344 | |
45c9e83b | 345 | ccflags="$ccflags $ccflags_uselargefiles" |
7f2eea8e GS |
346 | ;; |
347 | esac | |
348 | EOCBU | |
3fe280b7 SP |
349 | |
350 | # Purify fails to link Perl if a "-lc" is passed into its linker | |
351 | # due to duplicate symbols. | |
352 | case "$PURIFY" in | |
353 | $define|true|[yY]*) | |
354 | set `echo X "$libswanted "| sed -e 's/ c / /'` | |
355 | shift | |
356 | libswanted="$*" | |
357 | ;; | |
358 | esac | |
b1e55cab JH |
359 | |
360 | # If we are using g++ we must use nm and force ourselves to use | |
361 | # the /usr/lib/libc.a (resetting the libc below to an empty string | |
362 | # makes Configure to look for the right one) because the symbol | |
363 | # scanning tricks of Configure will crash and burn horribly. | |
364 | case "$cc" in | |
365 | *g++*) usenm=true | |
366 | libc='' | |
367 | ;; | |
368 | esac | |
369 | ||
c3faea48 JH |
370 | # If using g++, the Configure scan for dlopen() and (especially) |
371 | # dlerror() might fail, easier just to forcibly hint them in. | |
372 | case "$cc" in | |
373 | *g++*) | |
374 | d_dlopen='define' | |
375 | d_dlerror='define' | |
376 | ;; | |
377 | esac | |
5d3df70f JS |
378 | |
379 | # Under some circumstances libdb can get built in such a way as to | |
380 | # need pthread explicitly linked. | |
381 | ||
382 | libdb_needs_pthread="N" | |
383 | ||
384 | if echo " $libswanted " | grep -v " pthread " >/dev/null | |
385 | then | |
386 | if echo " $libswanted " | grep " db " >/dev/null | |
387 | then | |
388 | for DBDIR in $glibpth | |
389 | do | |
390 | DBLIB="$DBDIR/libdb.so" | |
391 | if [ -f $DBLIB ] | |
392 | then | |
393 | if nm -u $DBLIB | grep pthread >/dev/null | |
394 | then | |
395 | if ldd $DBLIB | grep pthread >/dev/null | |
396 | then | |
397 | libdb_needs_pthread="N" | |
398 | else | |
399 | libdb_needs_pthread="Y" | |
400 | fi | |
401 | fi | |
402 | fi | |
403 | done | |
404 | fi | |
405 | fi | |
406 | ||
407 | case "$libdb_needs_pthread" in | |
408 | "Y") | |
409 | libswanted="$libswanted pthread" | |
410 | ;; | |
411 | esac |