2 # Original version by rsanders
3 # Additional support by Kenneth Albanowski <kjahds@kjahds.com>
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>
9 # Consolidated by Andy Dougherty <doughera@lafayette.edu>
11 # Updated Thu Feb 8 11:56:10 EST 1996
13 # Updated Thu May 30 10:50:22 EDT 1996 by <doughera@lafayette.edu>
15 # Updated Fri Jun 21 11:07:54 EDT 1996
16 # NDBM support for ELF renabled by <kjahds@kjahds.com>
18 # No version of Linux supports setuid scripts.
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
27 # If you want to link against such a library, you must install the development
28 # version of the package.
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.
36 # SuSE Linux can be used as cross-compilation host for Cray XT4 Catamount/Qk.
39 case "`cc -V 2>&1`" in
40 *catamount*) . hints/catamount.sh; return ;;
44 # Some operating systems (e.g., Solaris 2.6) will link to a versioned shared
45 # library implicitly. For example, on Solaris, `ld foo.o -lgdbm' will find an
46 # appropriate version of libgdbm, if one is available; Linux, however, doesn't
47 # do the implicit mapping.
48 ignore_versioned_solibs='y'
50 # BSD compatibility library no longer needed
51 # 'kaffe' has a /usr/lib/libnet.so which is not at all relevant for perl.
52 # bind causes issues with several reentrant functions
53 set `echo X "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /' -e 's/ bind / /'`
57 # Debian 4.0 puts ndbm in the -lgdbm_compat library.
58 libswanted="$libswanted gdbm_compat"
60 # If you have glibc, then report the version for ./myconfig bug reporting.
61 # (Configure doesn't need to know the specific version since it just uses
62 # gcc to load the library for all tests.)
63 # We don't use __GLIBC__ and __GLIBC_MINOR__ because they
64 # are insufficiently precise to distinguish things like
65 # libc-2.0.6 and libc-2.0.7.
66 if test -L /lib/libc.so.6; then
67 libc=`ls -l /lib/libc.so.6 | awk '{print $NF}'`
71 # Configure may fail to find lstat() since it's a static/inline
72 # function in <sys/stat.h>.
76 case "$usemallocwrap" in
77 '') usemallocwrap='define' ;;
80 # The system malloc() is about as fast and as frugal as perl's.
81 # Since the system malloc() has been the default since at least
82 # 5.001, we might as well leave it that way. --AD 10 Jan 2002
83 case "$usemymalloc" in
84 '') usemymalloc='n' ;;
87 # Check if we're about to use Intel's ICC compiler
88 case "`${cc:-cc} -V 2>&1`" in
89 *"Intel(R) C++ Compiler"*|*"Intel(R) C Compiler"*)
90 # This is needed for Configure's prototype checks to work correctly
91 # The -mp flag is needed to pass various floating point related tests
92 # The -no-gcc flag is needed otherwise, icc pretends (poorly) to be gcc
93 ccflags="-we147 -mp -no-gcc $ccflags"
94 # Prevent relocation errors on 64bits arch
100 # If we're using ICC, we usually want the best performance
102 '') optimize='-O3' ;;
106 test "$optimize" || optimize='-xO2'
108 lddlflags='-G -Bdynamic'
109 # Sun C doesn't support gcc attributes, but, in many cases, doesn't
110 # complain either. Not all cases, though.
111 d_attribute_format='undef'
112 d_attribute_malloc='undef'
113 d_attribute_nonnull='undef'
114 d_attribute_noreturn='undef'
115 d_attribute_pure='undef'
116 d_attribute_unused='undef'
117 d_attribute_warn_unused_result='undef'
122 # use -O2 by default ; -O3 doesn't seem to bring significant benefits with gcc
127 # on ppc, it seems that gcc (at least gcc 3.3.2) isn't happy
128 # with -O2 ; so downgrade to -O1.
132 # This architecture has had various problems with gcc's
133 # in the 3.2, 3.3, and 3.4 releases when optimized to -O2. See
134 # RT #37156 for a discussion of the problem.
135 case "`${cc:-gcc} -v 2>&1`" in
136 *"version 3.2"*|*"version 3.3"*|*"version 3.4"*)
137 ccflags="-fno-delete-null-pointer-checks $ccflags"
145 # Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com>
148 /* Test for whether ELF binaries are produced */
154 int i=open("a.out",O_RDONLY);
157 if(read(i,&buffer[0],4)<4)
159 if(buffer[0] != 127 || buffer[1] != 'E' ||
160 buffer[2] != 'L' || buffer[3] != 'F')
162 exit(0); /* succeed (yes, it's ELF) */
165 if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then
168 You appear to have ELF support. I'll try to use it for dynamic loading.
169 If dynamic loading doesn't work, read hints/linux.sh for further information.
175 You don't have an ELF gcc. I will use dld if possible. If you are
176 using a version of DLD earlier than 3.2.6, or don't have it at all, you
177 should probably upgrade. If you are forced to use 3.2.4, you should
178 uncomment a couple of lines in hints/linux.sh and restart Configure so
179 that shared libraries will be disallowed.
182 lddlflags="-r $lddlflags"
183 # These empty values are so that Configure doesn't put in the
187 ccflags="-DOVR_DBL_DIG=14 $ccflags"
191 ## If you are using DLD 3.2.4 which does not support shared libs,
192 ## uncomment the next two lines:
196 # In addition, on some systems there is a problem with perl and NDBM
197 # which causes AnyDBM and NDBM_File to lock up. This is evidenced
198 # in the tests as AnyDBM just freezing. Apparently, this only
199 # happens on a.out systems, so we disable NDBM for all a.out linux
200 # systems. If someone can suggest a more robust test
201 # that would be appreciated.
204 # Date: Wed, 7 Feb 1996 03:21:04 +0900
205 # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp>
207 # I tried compiling with DBM support and sure enough things locked up
208 # just as advertised. Checking into it, I found that the lockup was
209 # during the call to dbm_open. Not *in* dbm_open -- but between the call
210 # to and the jump into.
212 # To make a long story short, making sure that the *.a and *.sa pairs of
213 # /usr/lib/lib{m,db,gdbm}.{a,sa}
214 # were perfectly in sync took care of it.
216 # This will generate a harmless Whoa There! message
217 case "$d_dbm_open" in
220 Disabling ndbm. This will generate a Whoa There message in Configure.
221 Read hints/linux.sh for further information.
223 # You can override this with Configure -Dd_dbm_open
231 if /bin/sh -c exit; then
233 echo 'You appear to have a working bash. Good.'
237 *********************** Warning! *********************
238 It would appear you have a defective bash shell installed. This is likely to
239 give you a failure of op/exec test #5 during the test phase of the build,
240 Upgrading to a recent version (1.14.4 or later) should fix the problem.
241 ******************************************************
247 # The following csh consistently coredumped in the test directory
248 # "/home/mikedlr/perl5.003_94/t", though not most other directories.
250 #Name : csh Distribution: Red Hat Linux (Rembrandt)
251 #Version : 5.2.6 Vendor: Red Hat Software
252 #Release : 3 Build Date: Fri May 24 19:42:14 1996
253 #Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com
254 #Group : Shells Source RPM: csh-5.2.6-3.src.rpm
256 #Description : BSD c-shell
258 # For this reason I suggest using the much bug-fixed tcsh for globbing
261 # November 2001: That warning's pretty old now and probably not so
262 # relevant, especially since perl now uses File::Glob for globbing.
263 # We'll still look for tcsh, but tone down the warnings.
264 # Andy Dougherty, Nov. 6, 2001
265 if $csh -c 'echo $version' >/dev/null 2>&1; then
266 echo 'Your csh is really tcsh. Good.'
268 if xxx=`./UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then
269 echo "Found tcsh. I'll use it for globbing."
270 # We can't change Configure's setting of $csh, due to the way
271 # Configure handles $d_portable and commands found in $loclist.
272 # We can set the value for CSH in config.h by setting full_csh.
274 elif [ -f "$csh" ]; then
275 echo "Couldn't find tcsh. Csh-based globbing might be broken."
279 # Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu>
280 # Message-Id: <33EF1634.B36B6500@pobox.com>
282 # The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need
283 # special flags passed in order for dynamic loading to work.
284 # instead of the recommended:
286 # ccdlflags='-rdynamic'
291 # So if your DR2 (DR3 came out summer 1998, consider upgrading)
292 # has problems with dynamic loading, uncomment the
293 # following three lines, make distclean, and re-Configure:
294 #case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in
295 #'osfmach3ppc') ccdlflags='-Wl,-E' ;;
300 case "$cccdlflags" in
301 *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;;
303 *) cccdlflags="$cccdlflags -fPIC" ;;
308 # SuSE8.2 has /usr/lib/libndbm* which are ld scripts rather than
309 # true libraries. The scripts cause binding against static
310 # version of -lgdbm which is a bad idea. So if we have 'nm'
311 # make sure it can read the file
313 if [ -r /usr/lib/libndbm.so -a -x /usr/bin/nm ] ; then
314 if /usr/bin/nm /usr/lib/libndbm.so >/dev/null 2>&1 ; then
315 echo 'Your shared -lndbm seems to be a real library.'
317 echo 'Your shared -lndbm is not a real library.'
318 set `echo X "$libswanted "| sed -e 's/ ndbm / /'`
325 # This script UU/usethreads.cbu will get 'called-back' by Configure
326 # after it has prompted the user for whether to use threads.
327 cat > UU/usethreads.cbu <<'EOCBU'
328 if getconf GNU_LIBPTHREAD_VERSION | grep NPTL >/dev/null 2>/dev/null
332 threadshavepids="-DTHREADS_HAVE_PIDS"
334 case "$usethreads" in
336 ccflags="-D_REENTRANT -D_GNU_SOURCE $threadshavepids $ccflags"
337 if echo $libswanted | grep -v pthread >/dev/null
339 set `echo X "$libswanted "| sed -e 's/ c / pthread c /'`
344 # Somehow at least in Debian 2.2 these manage to escape
345 # the #define forest of <features.h> and <time.h> so that
346 # the hasproto macro of Configure doesn't see these protos,
347 # even with the -D_GNU_SOURCE.
349 d_asctime_r_proto="$define"
350 d_crypt_r_proto="$define"
351 d_ctime_r_proto="$define"
352 d_gmtime_r_proto="$define"
353 d_localtime_r_proto="$define"
354 d_random_r_proto="$define"
360 cat > UU/uselargefiles.cbu <<'EOCBU'
361 # This script UU/uselargefiles.cbu will get 'called-back' by Configure
362 # after it has prompted the user for whether to use large files.
363 case "$uselargefiles" in
364 ''|$define|true|[yY]*)
365 # Keep this in the left margin.
366 ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
368 ccflags="$ccflags $ccflags_uselargefiles"
373 # Purify fails to link Perl if a "-lc" is passed into its linker
374 # due to duplicate symbols.
377 set `echo X "$libswanted "| sed -e 's/ c / /'`
383 # If we are using g++ we must use nm and force ourselves to use
384 # the /usr/lib/libc.a (resetting the libc below to an empty string
385 # makes Configure to look for the right one) because the symbol
386 # scanning tricks of Configure will crash and burn horribly.
393 # If using g++, the Configure scan for dlopen() and (especially)
394 # dlerror() might fail, easier just to forcibly hint them in.
402 # Under some circumstances libdb can get built in such a way as to
403 # need pthread explicitly linked.
405 libdb_needs_pthread="N"
407 if echo " $libswanted " | grep -v " pthread " >/dev/null
409 if echo " $libswanted " | grep " db " >/dev/null
411 for DBDIR in $glibpth
413 DBLIB="$DBDIR/libdb.so"
416 if nm -u $DBLIB | grep pthread >/dev/null
418 if ldd $DBLIB | grep pthread >/dev/null
420 libdb_needs_pthread="N"
422 libdb_needs_pthread="Y"
430 case "$libdb_needs_pthread" in
432 libswanted="$libswanted pthread"