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 compatability library no longer needed
43 # 'kaffe' has a /usr/lib/libnet.so which is not at all relevent for perl.
44 set `echo X "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /'`
48 # If you have glibc, then report the version for ./myconfig bug reporting.
49 # (Configure doesn't need to know the specific version since it just uses
50 # gcc to load the library for all tests.)
51 # We don't use __GLIBC__ and __GLIBC_MINOR__ because they
52 # are insufficiently precise to distinguish things like
53 # libc-2.0.6 and libc-2.0.7.
54 if test -L /lib/libc.so.6; then
55 libc=`ls -l /lib/libc.so.6 | awk '{print $NF}'`
59 # Configure may fail to find lstat() since it's a static/inline
60 # function in <sys/stat.h>.
63 # The system malloc() is about as fast and as frugal as perl's.
64 # Since the system malloc() has been the default since at least
65 # 5.001, we might as well leave it that way. --AD 10 Jan 2002
66 case "$usemymalloc" in
67 '') usemymalloc='n' ;;
71 '') # If we have modern enough gcc and well-supported enough CPU,
72 # crank up the optimization level.
73 case "`${cc:-gcc} -v 2>&1`" in
74 *"gcc version 2.95"*|*"gcc version 3."*)
76 i?86|ppc) optimize='-O3' ;;
86 # Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com>
89 /* Test for whether ELF binaries are produced */
94 int i=open("a.out",O_RDONLY);
97 if(read(i,&buffer[0],4)<4)
99 if(buffer[0] != 127 || buffer[1] != 'E' ||
100 buffer[2] != 'L' || buffer[3] != 'F')
102 exit(0); /* succeed (yes, it's ELF) */
105 if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then
108 You appear to have ELF support. I'll try to use it for dynamic loading.
109 If dynamic loading doesn't work, read hints/linux.sh for further information.
115 You don't have an ELF gcc. I will use dld if possible. If you are
116 using a version of DLD earlier than 3.2.6, or don't have it at all, you
117 should probably upgrade. If you are forced to use 3.2.4, you should
118 uncomment a couple of lines in hints/linux.sh and restart Configure so
119 that shared libraries will be disallowed.
122 lddlflags="-r $lddlflags"
123 # These empty values are so that Configure doesn't put in the
127 ccflags="-DOVR_DBL_DIG=14 $ccflags"
131 ## If you are using DLD 3.2.4 which does not support shared libs,
132 ## uncomment the next two lines:
136 # In addition, on some systems there is a problem with perl and NDBM
137 # which causes AnyDBM and NDBM_File to lock up. This is evidenced
138 # in the tests as AnyDBM just freezing. Apparently, this only
139 # happens on a.out systems, so we disable NDBM for all a.out linux
140 # systems. If someone can suggest a more robust test
141 # that would be appreciated.
144 # Date: Wed, 7 Feb 1996 03:21:04 +0900
145 # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp>
147 # I tried compiling with DBM support and sure enough things locked up
148 # just as advertised. Checking into it, I found that the lockup was
149 # during the call to dbm_open. Not *in* dbm_open -- but between the call
150 # to and the jump into.
152 # To make a long story short, making sure that the *.a and *.sa pairs of
153 # /usr/lib/lib{m,db,gdbm}.{a,sa}
154 # were perfectly in sync took care of it.
156 # This will generate a harmless Whoa There! message
157 case "$d_dbm_open" in
160 Disabling ndbm. This will generate a Whoa There message in Configure.
161 Read hints/linux.sh for further information.
163 # You can override this with Configure -Dd_dbm_open
171 if /bin/sh -c exit; then
173 echo 'You appear to have a working bash. Good.'
177 *********************** Warning! *********************
178 It would appear you have a defective bash shell installed. This is likely to
179 give you a failure of op/exec test #5 during the test phase of the build,
180 Upgrading to a recent version (1.14.4 or later) should fix the problem.
181 ******************************************************
187 # The following csh consistently coredumped in the test directory
188 # "/home/mikedlr/perl5.003_94/t", though not most other directories.
190 #Name : csh Distribution: Red Hat Linux (Rembrandt)
191 #Version : 5.2.6 Vendor: Red Hat Software
192 #Release : 3 Build Date: Fri May 24 19:42:14 1996
193 #Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com
194 #Group : Shells Source RPM: csh-5.2.6-3.src.rpm
196 #Description : BSD c-shell
198 # For this reason I suggest using the much bug-fixed tcsh for globbing
201 # November 2001: That warning's pretty old now and probably not so
202 # relevant, especially since perl now uses File::Glob for globbing.
203 # We'll still look for tcsh, but tone down the warnings.
204 # Andy Dougherty, Nov. 6, 2001
205 if $csh -c 'echo $version' >/dev/null 2>&1; then
206 echo 'Your csh is really tcsh. Good.'
208 if xxx=`./UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then
209 echo "Found tcsh. I'll use it for globbing."
210 # We can't change Configure's setting of $csh, due to the way
211 # Configure handles $d_portable and commands found in $loclist.
212 # We can set the value for CSH in config.h by setting full_csh.
214 elif [ -f "$csh" ]; then
215 echo "Couldn't find tcsh. Csh-based globbing might be broken."
219 # Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu>
220 # Message-Id: <33EF1634.B36B6500@pobox.com>
222 # The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need
223 # special flags passed in order for dynamic loading to work.
224 # instead of the recommended:
226 # ccdlflags='-rdynamic'
231 # So if your DR2 (DR3 came out summer 1998, consider upgrading)
232 # has problems with dynamic loading, uncomment the
233 # following three lines, make distclean, and re-Configure:
234 #case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in
235 #'osfmach3ppc') ccdlflags='-Wl,-E' ;;
240 case "$cccdlflags" in
241 *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;;
242 *) cccdlflags="$cccdlflags -fPIC" ;;
247 # This script UU/usethreads.cbu will get 'called-back' by Configure
248 # after it has prompted the user for whether to use threads.
249 cat > UU/usethreads.cbu <<'EOCBU'
250 case "$usethreads" in
252 ccflags="-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS $ccflags"
253 set `echo X "$libswanted "| sed -e 's/ c / pthread c /'`
257 # Somehow at least in Debian 2.2 these manage to escape
258 # the #define forest of <features.h> and <time.h> so that
259 # the hasproto macro of Configure doesn't see these protos,
260 # even with the -D_GNU_SOURCE.
262 d_asctime_r_proto="$define"
263 d_crypt_r_proto="$define"
264 d_ctime_r_proto="$define"
265 d_gmtime_r_proto="$define"
266 d_localtime_r_proto="$define"
267 d_random_r_proto="$define"
273 cat > UU/uselargefiles.cbu <<'EOCBU'
274 # This script UU/uselargefiles.cbu will get 'called-back' by Configure
275 # after it has prompted the user for whether to use large files.
276 case "$uselargefiles" in
277 ''|$define|true|[yY]*)
278 # Keep this in the left margin.
279 ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
281 ccflags="$ccflags $ccflags_uselargefiles"