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 # 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'
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 / /'`
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.)
52 # We don't use __GLIBC__ and __GLIBC_MINOR__ because they
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 $NF}'`
60 # Configure may fail to find lstat() since it's a static/inline
61 # function in <sys/stat.h>.
65 case "$usemallocwrap" in
66 '') usemallocwrap='define' ;;
69 # The system malloc() is about as fast and as frugal as perl's.
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
72 case "$usemymalloc" in
73 '') usemymalloc='n' ;;
76 # Check if we're about to use Intel's ICC compiler
77 case "`${cc:-cc} -V 2>&1`" in
78 *"Intel(R) C++ Compiler"*|*"Intel(R) C Compiler"*)
79 # This is needed for Configure's prototype checks to work correctly
80 # The -mp1 flag is needed to pass cmp related tests
81 ccflags="-we147 -mp1 $ccflags"
82 # If we're using ICC, we usually want the best performance
90 lddlflags='-G -Bdynamic'
95 # use -O2 by default ; -O3 doesn't seem to bring significant benefits with gcc
100 # on ppc, it seems that gcc (at least gcc 3.3.2) isn't happy
101 # with -O2 ; so downgrade to -O1.
105 # This architecture has had various problems with gcc's
106 # in the 3.2, 3.3, and 3.4 releases when optimized to -O2. See
107 # RT #37156 for a discussion of the problem.
108 case "`${cc:-gcc} -v 2>&1`" in
109 *"version 3.2"*|*"version 3.3"*|*"version 3.4"*)
110 ccflags="-fno-delete-null-pointer-checks $ccflags"
118 # Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com>
121 /* Test for whether ELF binaries are produced */
126 int i=open("a.out",O_RDONLY);
129 if(read(i,&buffer[0],4)<4)
131 if(buffer[0] != 127 || buffer[1] != 'E' ||
132 buffer[2] != 'L' || buffer[3] != 'F')
134 exit(0); /* succeed (yes, it's ELF) */
137 if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then
140 You appear to have ELF support. I'll try to use it for dynamic loading.
141 If dynamic loading doesn't work, read hints/linux.sh for further information.
147 You don't have an ELF gcc. I will use dld if possible. If you are
148 using a version of DLD earlier than 3.2.6, or don't have it at all, you
149 should probably upgrade. If you are forced to use 3.2.4, you should
150 uncomment a couple of lines in hints/linux.sh and restart Configure so
151 that shared libraries will be disallowed.
154 lddlflags="-r $lddlflags"
155 # These empty values are so that Configure doesn't put in the
159 ccflags="-DOVR_DBL_DIG=14 $ccflags"
163 ## If you are using DLD 3.2.4 which does not support shared libs,
164 ## uncomment the next two lines:
168 # In addition, on some systems there is a problem with perl and NDBM
169 # which causes AnyDBM and NDBM_File to lock up. This is evidenced
170 # in the tests as AnyDBM just freezing. Apparently, this only
171 # happens on a.out systems, so we disable NDBM for all a.out linux
172 # systems. If someone can suggest a more robust test
173 # that would be appreciated.
176 # Date: Wed, 7 Feb 1996 03:21:04 +0900
177 # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp>
179 # I tried compiling with DBM support and sure enough things locked up
180 # just as advertised. Checking into it, I found that the lockup was
181 # during the call to dbm_open. Not *in* dbm_open -- but between the call
182 # to and the jump into.
184 # To make a long story short, making sure that the *.a and *.sa pairs of
185 # /usr/lib/lib{m,db,gdbm}.{a,sa}
186 # were perfectly in sync took care of it.
188 # This will generate a harmless Whoa There! message
189 case "$d_dbm_open" in
192 Disabling ndbm. This will generate a Whoa There message in Configure.
193 Read hints/linux.sh for further information.
195 # You can override this with Configure -Dd_dbm_open
203 if /bin/sh -c exit; then
205 echo 'You appear to have a working bash. Good.'
209 *********************** Warning! *********************
210 It would appear you have a defective bash shell installed. This is likely to
211 give you a failure of op/exec test #5 during the test phase of the build,
212 Upgrading to a recent version (1.14.4 or later) should fix the problem.
213 ******************************************************
219 # The following csh consistently coredumped in the test directory
220 # "/home/mikedlr/perl5.003_94/t", though not most other directories.
222 #Name : csh Distribution: Red Hat Linux (Rembrandt)
223 #Version : 5.2.6 Vendor: Red Hat Software
224 #Release : 3 Build Date: Fri May 24 19:42:14 1996
225 #Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com
226 #Group : Shells Source RPM: csh-5.2.6-3.src.rpm
228 #Description : BSD c-shell
230 # For this reason I suggest using the much bug-fixed tcsh for globbing
233 # November 2001: That warning's pretty old now and probably not so
234 # relevant, especially since perl now uses File::Glob for globbing.
235 # We'll still look for tcsh, but tone down the warnings.
236 # Andy Dougherty, Nov. 6, 2001
237 if $csh -c 'echo $version' >/dev/null 2>&1; then
238 echo 'Your csh is really tcsh. Good.'
240 if xxx=`./UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then
241 echo "Found tcsh. I'll use it for globbing."
242 # We can't change Configure's setting of $csh, due to the way
243 # Configure handles $d_portable and commands found in $loclist.
244 # We can set the value for CSH in config.h by setting full_csh.
246 elif [ -f "$csh" ]; then
247 echo "Couldn't find tcsh. Csh-based globbing might be broken."
251 # Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu>
252 # Message-Id: <33EF1634.B36B6500@pobox.com>
254 # The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need
255 # special flags passed in order for dynamic loading to work.
256 # instead of the recommended:
258 # ccdlflags='-rdynamic'
263 # So if your DR2 (DR3 came out summer 1998, consider upgrading)
264 # has problems with dynamic loading, uncomment the
265 # following three lines, make distclean, and re-Configure:
266 #case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in
267 #'osfmach3ppc') ccdlflags='-Wl,-E' ;;
272 case "$cccdlflags" in
273 *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;;
275 *) cccdlflags="$cccdlflags -fPIC" ;;
280 # SuSE8.2 has /usr/lib/libndbm* which are ld scripts rather than
281 # true libraries. The scripts cause binding against static
282 # version of -lgdbm which is a bad idea. So if we have 'nm'
283 # make sure it can read the file
285 if [ -r /usr/lib/libndbm.so -a -x /usr/bin/nm ] ; then
286 if /usr/bin/nm /usr/lib/libndbm.so >/dev/null 2>&1 ; then
287 echo 'Your shared -lndbm seems to be a real library.'
289 echo 'Your shared -lndbm is not a real library.'
290 set `echo X "$libswanted "| sed -e 's/ ndbm / /'`
297 # This script UU/usethreads.cbu will get 'called-back' by Configure
298 # after it has prompted the user for whether to use threads.
299 cat > UU/usethreads.cbu <<'EOCBU'
300 case "$usethreads" in
302 ccflags="-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS $ccflags"
303 set `echo X "$libswanted "| sed -e 's/ c / pthread c /'`
307 # Somehow at least in Debian 2.2 these manage to escape
308 # the #define forest of <features.h> and <time.h> so that
309 # the hasproto macro of Configure doesn't see these protos,
310 # even with the -D_GNU_SOURCE.
312 d_asctime_r_proto="$define"
313 d_crypt_r_proto="$define"
314 d_ctime_r_proto="$define"
315 d_gmtime_r_proto="$define"
316 d_localtime_r_proto="$define"
317 d_random_r_proto="$define"
323 cat > UU/uselargefiles.cbu <<'EOCBU'
324 # This script UU/uselargefiles.cbu will get 'called-back' by Configure
325 # after it has prompted the user for whether to use large files.
326 case "$uselargefiles" in
327 ''|$define|true|[yY]*)
328 # Keep this in the left margin.
329 ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
331 ccflags="$ccflags $ccflags_uselargefiles"
336 # Purify fails to link Perl if a "-lc" is passed into its linker
337 # due to duplicate symbols.
340 set `echo X "$libswanted "| sed -e 's/ c / /'`