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1 | # hints/linux.sh |
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2 | # Original version by rsanders |
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3 | # Additional support by Kenneth Albanowski <kjahds@kjahds.com> |
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4 | # |
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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> |
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8 | # |
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9 | # Consolidated by Andy Dougherty <doughera@lafayette.edu> |
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10 | # |
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11 | # Updated Thu Feb 8 11:56:10 EST 1996 |
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12 | |
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13 | # Updated Thu May 30 10:50:22 EDT 1996 by <doughera@lafayette.edu> |
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14 | |
15 | # Updated Fri Jun 21 11:07:54 EDT 1996 |
16 | # NDBM support for ELF renabled by <kjahds@kjahds.com> |
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17 | |
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18 | # No version of Linux supports setuid scripts. |
19 | d_suidsafe='undef' |
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20 | |
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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 |
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 "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /' -e 's/ bind / /'` |
4bf4dbb3 |
46 | shift |
47 | libswanted="$*" |
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48 | |
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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 |
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 | |
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60 | # Configure may fail to find lstat() since it's a static/inline |
61 | # function in <sys/stat.h>. |
62 | d_lstat=define |
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63 | |
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64 | # malloc wrap works |
65 | case "$usemallocwrap" in |
66 | '') usemallocwrap='define' ;; |
67 | esac |
68 | |
f443a56e |
69 | # The system malloc() is about as fast and as frugal as perl's. |
c3404dc3 |
70 | # Since the system malloc() has been the default since at least |
71 | # 5.001, we might as well leave it that way. --AD 10 Jan 2002 |
c07a80fd |
72 | case "$usemymalloc" in |
73 | '') usemymalloc='n' ;; |
74 | esac |
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75 | |
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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 $ccflags" |
06d57135 |
83 | # If we're using ICC, we usually want the best performance |
84 | case "$optimize" in |
85 | '') optimize='-O3' ;; |
86 | esac |
87 | ;; |
6452e86c |
88 | *"Sun C"*) |
89 | optimize='-xO2' |
90 | cccdlflags='-KPIC' |
91 | lddlflags='-G -Bdynamic' |
2f7602ba |
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 |
102 | esac |
103 | |
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104 | case "$optimize" in |
051e4fe1 |
105 | # use -O2 by default ; -O3 doesn't seem to bring significant benefits with gcc |
be92ff21 |
106 | '') |
107 | optimize='-O2' |
108 | case "`uname -m`" in |
109 | ppc*) |
110 | # on ppc, it seems that gcc (at least gcc 3.3.2) isn't happy |
f88ad257 |
111 | # with -O2 ; so downgrade to -O1. |
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112 | optimize='-O1' |
113 | ;; |
f88ad257 |
114 | ia64*) |
115 | # This architecture has had various problems with gcc's |
116 | # in the 3.2, 3.3, and 3.4 releases when optimized to -O2. See |
117 | # RT #37156 for a discussion of the problem. |
118 | case "`${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 |
124 | esac |
125 | ;; |
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126 | esac |
127 | |
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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> |
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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 |
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148 | if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then |
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149 | cat <<'EOM' >&4 |
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150 | |
151 | You appear to have ELF support. I'll try to use it for dynamic loading. |
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152 | If dynamic loading doesn't work, read hints/linux.sh for further information. |
232e078e |
153 | EOM |
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154 | |
232e078e |
155 | else |
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156 | cat <<'EOM' >&4 |
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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 |
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161 | uncomment a couple of lines in hints/linux.sh and restart Configure so |
162 | that shared libraries will be disallowed. |
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163 | |
164 | EOM |
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165 | lddlflags="-r $lddlflags" |
5d94fbed |
166 | # These empty values are so that Configure doesn't put in the |
167 | # Linux ELF values. |
168 | ccdlflags=' ' |
169 | cccdlflags=' ' |
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170 | ccflags="-DOVR_DBL_DIG=14 $ccflags" |
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171 | so='sa' |
172 | dlext='o' |
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173 | nm_so_opt=' ' |
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174 | ## If you are using DLD 3.2.4 which does not support shared libs, |
175 | ## uncomment the next two lines: |
176 | #ldflags="-static" |
177 | #so='none' |
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178 | |
179 | # In addition, on some systems there is a problem with perl and NDBM |
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180 | # which causes AnyDBM and NDBM_File to lock up. This is evidenced |
181 | # in the tests as AnyDBM just freezing. Apparently, this only |
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182 | # happens on a.out systems, so we disable NDBM for all a.out linux |
183 | # systems. If someone can suggest a more robust test |
184 | # that would be appreciated. |
185 | # |
186 | # More info: |
187 | # Date: Wed, 7 Feb 1996 03:21:04 +0900 |
188 | # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp> |
189 | # |
190 | # I tried compiling with DBM support and sure enough things locked up |
191 | # just as advertised. Checking into it, I found that the lockup was |
192 | # during the call to dbm_open. Not *in* dbm_open -- but between the call |
193 | # to and the jump into. |
f443a56e |
194 | # |
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195 | # To make a long story short, making sure that the *.a and *.sa pairs of |
196 | # /usr/lib/lib{m,db,gdbm}.{a,sa} |
197 | # were perfectly in sync took care of it. |
198 | # |
199 | # This will generate a harmless Whoa There! message |
200 | case "$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 |
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211 | |
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212 | rm -f try.c a.out |
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213 | |
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214 | if /bin/sh -c exit; then |
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215 | echo '' |
216 | echo 'You appear to have a working bash. Good.' |
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217 | else |
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218 | cat << 'EOM' >&4 |
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219 | |
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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 | ****************************************************** |
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225 | EOM |
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226 | |
227 | fi |
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228 | |
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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 |
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 |
257 | elif [ -f "$csh" ]; then |
258 | echo "Couldn't find tcsh. Csh-based globbing might be broken." |
46fc3d4c |
259 | fi |
284c50cc |
260 | fi |
dc66995c |
261 | |
92526645 |
262 | # Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu> |
263 | # Message-Id: <33EF1634.B36B6500@pobox.com> |
f443a56e |
264 | # |
17ff8a05 |
265 | # The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need |
266 | # special flags passed in order for dynamic loading to work. |
92526645 |
267 | # instead of the recommended: |
17ff8a05 |
268 | # |
92526645 |
269 | # ccdlflags='-rdynamic' |
f443a56e |
270 | # |
92526645 |
271 | # it should be: |
272 | # ccdlflags='-Wl,-E' |
17ff8a05 |
273 | # |
274 | # So if your DR2 (DR3 came out summer 1998, consider upgrading) |
275 | # has problems with dynamic loading, uncomment the |
276 | # following three lines, make distclean, and re-Configure: |
277 | #case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in |
278 | #'osfmach3ppc') ccdlflags='-Wl,-E' ;; |
279 | #esac |
92526645 |
280 | |
f6527d0e |
281 | case "`uname -m`" in |
282 | sparc*) |
7cd1f58a |
283 | case "$cccdlflags" in |
284 | *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;; |
4cd66402 |
285 | *-fPIC*) ;; |
7cd1f58a |
286 | *) cccdlflags="$cccdlflags -fPIC" ;; |
287 | esac |
288 | ;; |
289 | esac |
290 | |
f443a56e |
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 |
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 $ccflags" |
104d25b7 |
314 | set `echo X "$libswanted "| sed -e 's/ c / pthread c /'` |
315 | shift |
316 | libswanted="$*" |
47b8d1e2 |
317 | |
a48ec845 |
318 | # Somehow at least in Debian 2.2 these manage to escape |
319 | # the #define forest of <features.h> and <time.h> so that |
c95a4480 |
320 | # the hasproto macro of Configure doesn't see these protos, |
321 | # even with the -D_GNU_SOURCE. |
47b8d1e2 |
322 | |
a48ec845 |
323 | d_asctime_r_proto="$define" |
47b8d1e2 |
324 | d_crypt_r_proto="$define" |
a48ec845 |
325 | d_ctime_r_proto="$define" |
326 | d_gmtime_r_proto="$define" |
327 | d_localtime_r_proto="$define" |
01b53dac |
328 | d_random_r_proto="$define" |
47b8d1e2 |
329 | |
104d25b7 |
330 | ;; |
331 | esac |
332 | EOCBU |
7f2eea8e |
333 | |
334 | cat > UU/uselargefiles.cbu <<'EOCBU' |
f443a56e |
335 | # This script UU/uselargefiles.cbu will get 'called-back' by Configure |
7f2eea8e |
336 | # after it has prompted the user for whether to use large files. |
337 | case "$uselargefiles" in |
338 | ''|$define|true|[yY]*) |
9422c00b |
339 | # Keep this in the left margin. |
45c9e83b |
340 | ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" |
9422c00b |
341 | |
45c9e83b |
342 | ccflags="$ccflags $ccflags_uselargefiles" |
7f2eea8e |
343 | ;; |
344 | esac |
345 | EOCBU |
3fe280b7 |
346 | |
347 | # Purify fails to link Perl if a "-lc" is passed into its linker |
348 | # due to duplicate symbols. |
349 | case "$PURIFY" in |
350 | $define|true|[yY]*) |
351 | set `echo X "$libswanted "| sed -e 's/ c / /'` |
352 | shift |
353 | libswanted="$*" |
354 | ;; |
355 | esac |
b1e55cab |
356 | |
357 | # If we are using g++ we must use nm and force ourselves to use |
358 | # the /usr/lib/libc.a (resetting the libc below to an empty string |
359 | # makes Configure to look for the right one) because the symbol |
360 | # scanning tricks of Configure will crash and burn horribly. |
361 | case "$cc" in |
362 | *g++*) usenm=true |
363 | libc='' |
364 | ;; |
365 | esac |
366 | |
c3faea48 |
367 | # If using g++, the Configure scan for dlopen() and (especially) |
368 | # dlerror() might fail, easier just to forcibly hint them in. |
369 | case "$cc" in |
370 | *g++*) |
371 | d_dlopen='define' |
372 | d_dlerror='define' |
373 | ;; |
374 | esac |