Add fallback to tmpfile for use in cases where user's relying on
[p5sagit/p5-mst-13.2.git] / hints / linux.sh
CommitLineData
1aef975c 1# hints/linux.sh
a0d0e21e 2# Original version by rsanders
1fc4cb55 3# Additional support by Kenneth Albanowski <kjahds@kjahds.com>
1aef975c 4#
232e078e 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#
232e078e 9# Consolidated by Andy Dougherty <doughera@lafcol.lafayette.edu>
1fc4cb55 10#
9bed9d38 11# Updated Thu Feb 8 11:56:10 EST 1996
ef0c9946 12
13# Updated Thu May 30 10:50:22 EDT 1996 by <doughera@lafcol.lafayette.edu>
14
15# Updated Fri Jun 21 11:07:54 EDT 1996
16# NDBM support for ELF renabled by <kjahds@kjahds.com>
232e078e 17
f3db1d4d 18# No version of Linux supports setuid scripts.
19d_suidsafe='undef'
f3db1d4d 20
1cfa4ec7 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.
40ignore_versioned_solibs='y'
41
232e078e 42# perl goes into the /usr tree. See the Filesystem Standard
43# available via anonymous FTP at tsx-11.mit.edu in
44# /pub/linux/docs/linux-standards/fsstnd.
16d20bd9 45# Allow a command line override, e.g. Configure -Dprefix=/foo/bar
6d3b1ec5 46#
47# Addendum for 5.005_57 and beyond:
48#
49# However, most Linux users probably already have a /usr/bin/perl.
50# We can't know whether the current user is intending to *replace*
51# that /usr/bin/perl or whether the user is intending to install
52# a *different* installation.
53#
54# Here is what we used to do:
55# Allow a command line override, e.g. Configure -Dprefix=/foo/bar
56# case "$prefix" in
57# '') prefix='/usr' ;;
58# esac
59#
60# For now, let's assume that most Linux users get their /usr/bin/perl
61# from some packaging system, so that those compiling from source are
62# probably the more experimental folks and hence probably aren't
63# intending to replace /usr/bin/perl (at least just yet).
64# This change makes linux consistent with most other unix platforms
65# in having a default of prefix=/usr/local.
ee8c7f54 66# These notes can probably safely be removed in 5.005_50 and beyond.
6d3b1ec5 67#
68# 9 April 1999 Andy Dougherty <doughera@lafayette.edu>
69#
1fc4cb55 70
4bf4dbb3 71# BSD compatability library no longer needed
693762b4 72# 'kaffe' has a /usr/lib/libnet.so which is not at all relevent for perl.
73set `echo X "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /'`
4bf4dbb3 74shift
75libswanted="$*"
1fc4cb55 76
a4ea3e34 77# If you have glibc, then report the version for ./myconfig bug reporting.
78# (Configure doesn't need to know the specific version since it just uses
79# gcc to load the library for all tests.)
80# Is this sufficiently robust for libc5 systems as well as
81# glibc-2.1.x systems?
82# We don't use __GLIBC__ and __GLIBC_MINOR__ because they
83# are insufficiently precise to distinguish things like
84# libc-2.0.6 and libc-2.0.7.
85if test -L /lib/libc.so.6; then
86 libc=`ls -l /lib/libc.so.6 | awk '{print $NF}'`
87 libc=/lib/$libc
88fi
89
232e078e 90# Configure may fail to find lstat() since it's a static/inline
91# function in <sys/stat.h>.
92d_lstat=define
1aef975c 93
16d20bd9 94# Explanation?
c07a80fd 95case "$usemymalloc" in
96'') usemymalloc='n' ;;
97esac
1aef975c 98
99case "$optimize" in
100'') optimize='-O2' ;;
101esac
102
232e078e 103# Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com>
104# for this test.
105cat >try.c <<'EOM'
106/* Test for whether ELF binaries are produced */
107#include <fcntl.h>
108#include <stdlib.h>
109main() {
110 char buffer[4];
111 int i=open("a.out",O_RDONLY);
112 if(i==-1)
113 exit(1); /* fail */
114 if(read(i,&buffer[0],4)<4)
115 exit(1); /* fail */
116 if(buffer[0] != 127 || buffer[1] != 'E' ||
117 buffer[2] != 'L' || buffer[3] != 'F')
118 exit(1); /* fail */
119 exit(0); /* succeed (yes, it's ELF) */
120}
121EOM
f0b7e567 122if ${cc:-gcc} try.c >/dev/null 2>&1 && ./a.out; then
ef0c9946 123 cat <<'EOM' >&4
232e078e 124
125You appear to have ELF support. I'll try to use it for dynamic loading.
ef0c9946 126If dynamic loading doesn't work, read hints/linux.sh for further information.
232e078e 127EOM
ef0c9946 128
129#For RedHat Linux 3.0.3, you may need to fetch
130# ftp://ftp.redhat.com/pub/redhat-3.0.3/i386/updates/RPMS/ld.so-1.7.14-3.i386.rpm
131#
132
232e078e 133else
ef0c9946 134 cat <<'EOM' >&4
16d20bd9 135
136You don't have an ELF gcc. I will use dld if possible. If you are
137using a version of DLD earlier than 3.2.6, or don't have it at all, you
138should probably upgrade. If you are forced to use 3.2.4, you should
c2960299 139uncomment a couple of lines in hints/linux.sh and restart Configure so
140that shared libraries will be disallowed.
16d20bd9 141
142EOM
232e078e 143 lddlflags="-r $lddlflags"
5d94fbed 144 # These empty values are so that Configure doesn't put in the
145 # Linux ELF values.
146 ccdlflags=' '
147 cccdlflags=' '
c07a80fd 148 ccflags="-DOVR_DBL_DIG=14 $ccflags"
1aef975c 149 so='sa'
150 dlext='o'
a5f75d66 151 nm_so_opt=' '
1aef975c 152 ## If you are using DLD 3.2.4 which does not support shared libs,
153 ## uncomment the next two lines:
154 #ldflags="-static"
155 #so='none'
ef0c9946 156
157 # In addition, on some systems there is a problem with perl and NDBM
158 # which causes AnyDBM and NDBM_File to lock up. This is evidenced
159 # in the tests as AnyDBM just freezing. Apparently, this only
160 # happens on a.out systems, so we disable NDBM for all a.out linux
161 # systems. If someone can suggest a more robust test
162 # that would be appreciated.
163 #
164 # More info:
165 # Date: Wed, 7 Feb 1996 03:21:04 +0900
166 # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp>
167 #
168 # I tried compiling with DBM support and sure enough things locked up
169 # just as advertised. Checking into it, I found that the lockup was
170 # during the call to dbm_open. Not *in* dbm_open -- but between the call
171 # to and the jump into.
172 #
173 # To make a long story short, making sure that the *.a and *.sa pairs of
174 # /usr/lib/lib{m,db,gdbm}.{a,sa}
175 # were perfectly in sync took care of it.
176 #
177 # This will generate a harmless Whoa There! message
178 case "$d_dbm_open" in
179 '') cat <<'EOM' >&4
180
181Disabling ndbm. This will generate a Whoa There message in Configure.
182Read hints/linux.sh for further information.
183EOM
184 # You can override this with Configure -Dd_dbm_open
185 d_dbm_open=undef
186 ;;
187 esac
232e078e 188fi
a0d0e21e 189
c2960299 190rm -f try.c a.out
16d20bd9 191
c2960299 192if /bin/bash -c exit; then
284c50cc 193 echo ''
194 echo 'You appear to have a working bash. Good.'
c2960299 195else
ef0c9946 196 cat << 'EOM' >&4
a0d0e21e 197
ef0c9946 198*********************** Warning! *********************
199It would appear you have a defective bash shell installed. This is likely to
200give you a failure of op/exec test #5 during the test phase of the build,
201Upgrading to a recent version (1.14.4 or later) should fix the problem.
202******************************************************
a0d0e21e 203EOM
c2960299 204
205fi
16d20bd9 206
284c50cc 207# On SPARClinux,
208# The following csh consistently coredumped in the test directory
209# "/home/mikedlr/perl5.003_94/t", though not most other directories.
210
211#Name : csh Distribution: Red Hat Linux (Rembrandt)
212#Version : 5.2.6 Vendor: Red Hat Software
213#Release : 3 Build Date: Fri May 24 19:42:14 1996
214#Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com
215#Group : Shells Source RPM: csh-5.2.6-3.src.rpm
216#Size : 184417
217#Description : BSD c-shell
218
219# For this reason I suggest using the much bug-fixed tcsh for globbing
220# where available.
221
222if [ ! "`csh -c 'echo $version' 2>/dev/null`" ]
223then
46fc3d4c 224 echo 'Real csh found (might break); looking for tcsh ...'
99cae59c 225 # Use ./UU/loc to find tcsh. (We no longer run in the hints/ directory)
226 if xxx=`./UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then
46fc3d4c 227 echo "Found tcsh. I'll use it for globbing."
228 # We can't change Configure's setting of $csh, due to the way
229 # Configure handles $d_portable and commands found in $loclist.
230 # We can set the value for CSH in config.h by setting full_csh.
231 full_csh=$xxx
232 else
233 echo "Couldn't find tcsh. BEWARE: GLOBBING MIGHT BE BROKEN."
234 fi
284c50cc 235else
46fc3d4c 236 echo 'Your csh is really tcsh. Good.'
284c50cc 237fi
dc66995c 238
92526645 239# Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu>
240# Message-Id: <33EF1634.B36B6500@pobox.com>
241#
17ff8a05 242# The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need
243# special flags passed in order for dynamic loading to work.
92526645 244# instead of the recommended:
17ff8a05 245#
92526645 246# ccdlflags='-rdynamic'
247#
248# it should be:
249# ccdlflags='-Wl,-E'
17ff8a05 250#
251# So if your DR2 (DR3 came out summer 1998, consider upgrading)
252# has problems with dynamic loading, uncomment the
253# following three lines, make distclean, and re-Configure:
254#case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in
255#'osfmach3ppc') ccdlflags='-Wl,-E' ;;
256#esac
92526645 257
7cd1f58a 258case "`uname -r`" in
259sparc-linux)
260 case "$cccdlflags" in
261 *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;;
262 *) cccdlflags="$cccdlflags -fPIC" ;;
263 esac
264 ;;
265esac
266
104d25b7 267# This script UU/usethreads.cbu will get 'called-back' by Configure
268# after it has prompted the user for whether to use threads.
269cat > UU/usethreads.cbu <<'EOCBU'
270case "$usethreads" in
271$define|true|[yY]*)
272 ccflags="-D_REENTRANT $ccflags"
273 set `echo X "$libswanted "| sed -e 's/ c / pthread c /'`
274 shift
275 libswanted="$*"
276 ;;
277esac
278EOCBU
7f2eea8e 279
280cat > UU/uselargefiles.cbu <<'EOCBU'
281# This script UU/uselargefiles.cbu will get 'called-back' by Configure
282# after it has prompted the user for whether to use large files.
283case "$uselargefiles" in
284''|$define|true|[yY]*)
285 ccflags="$ccflags -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
286 ;;
287esac
288EOCBU