# Original version by rsanders
# Additional support by Kenneth Albanowski <kjahds@kjahds.com>
#
-# First pass at ELF support by Andy Dougherty <doughera@lafcol.lafayette.edu>
-# Fri Feb 3 14:05:00 EST 1995
-# Use sh Configure -Dcc=gcc-elf to try using gcc-elf. It might work.
+# ELF support by H.J. Lu <hjl@nynexst.com>
+# Additional info from Nigel Head <nhead@ESOC.bitnet>
+# and Kenneth Albanowski <kjahds@kjahds.com>
#
-# Last updated Mon Mar 6 10:18:10 EST 1995
+# Consolidated by Andy Dougherty <doughera@lafcol.lafayette.edu>
#
+# Updated Thu Feb 8 11:56:10 EST 1996
-# Why is this needed?
-bin='/usr/bin'
+# Updated Thu May 30 10:50:22 EDT 1996 by <doughera@lafcol.lafayette.edu>
-# Apparently some versions of gcc 2.6.2 are picking up _G_HAVE_BOOL
-# from somewhere (_G_config.h maybe?) but not actually defining bool.
-# Anyone really know what's going on?
-ccflags='-Dbool=char -DHAS_BOOL'
+# Updated Fri Jun 21 11:07:54 EDT 1996
+# NDBM support for ELF renabled by <kjahds@kjahds.com>
-d_dosuid='define'
+# No version of Linux supports setuid scripts.
+d_suidsafe='undef'
-malloctype='void *'
-usemymalloc='n'
+# Debian and Red Hat, and perhaps other vendors, provide both runtime and
+# development packages for some libraries. The runtime packages contain shared
+# libraries with version information in their names (e.g., libgdbm.so.1.7.3);
+# the development packages supplement this with versionless shared libraries
+# (e.g., libgdbm.so).
+#
+# If you want to link against such a library, you must install the development
+# version of the package.
+#
+# These packages use a -dev naming convention in both Debian and Red Hat:
+# libgdbmg1 (non-development version of GNU libc 2-linked GDBM library)
+# libgdbmg1-dev (development version of GNU libc 2-linked GDBM library)
+# So make sure that for any libraries you wish to link Perl with under
+# Debian or Red Hat you have the -dev packages installed.
+#
+# Some operating systems (e.g., Solaris 2.6) will link to a versioned shared
+# library implicitly. For example, on Solaris, `ld foo.o -lgdbm' will find an
+# appropriate version of libgdbm, if one is available; Linux, however, doesn't
+# do the implicit mapping.
+ignore_versioned_solibs='y'
+
+# perl goes into the /usr tree. See the Filesystem Standard
+# available via anonymous FTP at tsx-11.mit.edu in
+# /pub/linux/docs/linux-standards/fsstnd.
+# Allow a command line override, e.g. Configure -Dprefix=/foo/bar
+#
+# Addendum for 5.005_57 and beyond:
+#
+# However, most Linux users probably already have a /usr/bin/perl.
+# We can't know whether the current user is intending to *replace*
+# that /usr/bin/perl or whether the user is intending to install
+# a *different* installation.
+#
+# Here is what we used to do:
+# Allow a command line override, e.g. Configure -Dprefix=/foo/bar
+# case "$prefix" in
+# '') prefix='/usr' ;;
+# esac
+#
+# For now, let's assume that most Linux users get their /usr/bin/perl
+# from some packaging system, so that those compiling from source are
+# probably the more experimental folks and hence probably aren't
+# intending to replace /usr/bin/perl (at least just yet).
+# This change makes linux consistent with most other unix platforms
+# in having a default of prefix=/usr/local.
+# These notes can probably safely be removed in 5.005_50 and beyond.
+#
+# 9 April 1999 Andy Dougherty <doughera@lafayette.edu>
+#
+
+# BSD compatability library no longer needed
+# 'kaffe' has a /usr/lib/libnet.so which is not at all relevent for perl.
+set `echo X "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /'`
+shift
+libswanted="$*"
+
+# If you have glibc, then report the version for ./myconfig bug reporting.
+# (Configure doesn't need to know the specific version since it just uses
+# gcc to load the library for all tests.)
+# Is this sufficiently robust for libc5 systems as well as
+# glibc-2.1.x systems?
+# We don't use __GLIBC__ and __GLIBC_MINOR__ because they
+# are insufficiently precise to distinguish things like
+# libc-2.0.6 and libc-2.0.7.
+if test -L /lib/libc.so.6; then
+ libc=`ls -l /lib/libc.so.6 | awk '{print $NF}'`
+ libc=/lib/$libc
+fi
+
+# Configure may fail to find lstat() since it's a static/inline
+# function in <sys/stat.h>.
+d_lstat=define
+
+# Explanation?
+case "$usemymalloc" in
+'') usemymalloc='n' ;;
+esac
case "$optimize" in
'') optimize='-O2' ;;
esac
-case "$cc" in
-*cc-elf*)
- so='so'
- dlext='so'
- # Configure might not understand nm output for ELF.
- usenm=false
- ;;
-*)
- lddlflags='-r'
+# Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com>
+# for this test.
+cat >try.c <<'EOM'
+/* Test for whether ELF binaries are produced */
+#include <fcntl.h>
+#include <stdlib.h>
+main() {
+ char buffer[4];
+ int i=open("a.out",O_RDONLY);
+ if(i==-1)
+ exit(1); /* fail */
+ if(read(i,&buffer[0],4)<4)
+ exit(1); /* fail */
+ if(buffer[0] != 127 || buffer[1] != 'E' ||
+ buffer[2] != 'L' || buffer[3] != 'F')
+ exit(1); /* fail */
+ exit(0); /* succeed (yes, it's ELF) */
+}
+EOM
+if ${cc:-gcc} try.c >/dev/null 2>&1 && ./a.out; then
+ cat <<'EOM' >&4
+
+You appear to have ELF support. I'll try to use it for dynamic loading.
+If dynamic loading doesn't work, read hints/linux.sh for further information.
+EOM
+
+#For RedHat Linux 3.0.3, you may need to fetch
+# ftp://ftp.redhat.com/pub/redhat-3.0.3/i386/updates/RPMS/ld.so-1.7.14-3.i386.rpm
+#
+
+else
+ cat <<'EOM' >&4
+
+You don't have an ELF gcc. I will use dld if possible. If you are
+using a version of DLD earlier than 3.2.6, or don't have it at all, you
+should probably upgrade. If you are forced to use 3.2.4, you should
+uncomment a couple of lines in hints/linux.sh and restart Configure so
+that shared libraries will be disallowed.
+
+EOM
+ lddlflags="-r $lddlflags"
+ # These empty values are so that Configure doesn't put in the
+ # Linux ELF values.
+ ccdlflags=' '
+ cccdlflags=' '
+ ccflags="-DOVR_DBL_DIG=14 $ccflags"
so='sa'
dlext='o'
+ nm_so_opt=' '
## If you are using DLD 3.2.4 which does not support shared libs,
## uncomment the next two lines:
#ldflags="-static"
#so='none'
- ;;
-esac
-cat <<EOM
+ # In addition, on some systems there is a problem with perl and NDBM
+ # which causes AnyDBM and NDBM_File to lock up. This is evidenced
+ # in the tests as AnyDBM just freezing. Apparently, this only
+ # happens on a.out systems, so we disable NDBM for all a.out linux
+ # systems. If someone can suggest a more robust test
+ # that would be appreciated.
+ #
+ # More info:
+ # Date: Wed, 7 Feb 1996 03:21:04 +0900
+ # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp>
+ #
+ # I tried compiling with DBM support and sure enough things locked up
+ # just as advertised. Checking into it, I found that the lockup was
+ # during the call to dbm_open. Not *in* dbm_open -- but between the call
+ # to and the jump into.
+ #
+ # To make a long story short, making sure that the *.a and *.sa pairs of
+ # /usr/lib/lib{m,db,gdbm}.{a,sa}
+ # were perfectly in sync took care of it.
+ #
+ # This will generate a harmless Whoa There! message
+ case "$d_dbm_open" in
+ '') cat <<'EOM' >&4
-You should take a look at hints/linux.sh. There are a some lines you
-may wish to change near the bottom.
+Disabling ndbm. This will generate a Whoa There message in Configure.
+Read hints/linux.sh for further information.
EOM
+ # You can override this with Configure -Dd_dbm_open
+ d_dbm_open=undef
+ ;;
+ esac
+fi
+
+rm -f try.c a.out
+
+if /bin/bash -c exit; then
+ echo ''
+ echo 'You appear to have a working bash. Good.'
+else
+ cat << 'EOM' >&4
+
+*********************** Warning! *********************
+It would appear you have a defective bash shell installed. This is likely to
+give you a failure of op/exec test #5 during the test phase of the build,
+Upgrading to a recent version (1.14.4 or later) should fix the problem.
+******************************************************
+EOM
+
+fi
+
+# On SPARClinux,
+# The following csh consistently coredumped in the test directory
+# "/home/mikedlr/perl5.003_94/t", though not most other directories.
+
+#Name : csh Distribution: Red Hat Linux (Rembrandt)
+#Version : 5.2.6 Vendor: Red Hat Software
+#Release : 3 Build Date: Fri May 24 19:42:14 1996
+#Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com
+#Group : Shells Source RPM: csh-5.2.6-3.src.rpm
+#Size : 184417
+#Description : BSD c-shell
+
+# For this reason I suggest using the much bug-fixed tcsh for globbing
+# where available.
+
+if [ ! "`csh -c 'echo $version' 2>/dev/null`" ]
+then
+ echo 'Real csh found (might break); looking for tcsh ...'
+ # Use ./UU/loc to find tcsh. (We no longer run in the hints/ directory)
+ if xxx=`./UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then
+ echo "Found tcsh. I'll use it for globbing."
+ # We can't change Configure's setting of $csh, due to the way
+ # Configure handles $d_portable and commands found in $loclist.
+ # We can set the value for CSH in config.h by setting full_csh.
+ full_csh=$xxx
+ else
+ echo "Couldn't find tcsh. BEWARE: GLOBBING MIGHT BE BROKEN."
+ fi
+else
+ echo 'Your csh is really tcsh. Good.'
+fi
+
+# Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu>
+# Message-Id: <33EF1634.B36B6500@pobox.com>
+#
+# The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need
+# special flags passed in order for dynamic loading to work.
+# instead of the recommended:
+#
+# ccdlflags='-rdynamic'
+#
+# it should be:
+# ccdlflags='-Wl,-E'
+#
+# So if your DR2 (DR3 came out summer 1998, consider upgrading)
+# has problems with dynamic loading, uncomment the
+# following three lines, make distclean, and re-Configure:
+#case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in
+#'osfmach3ppc') ccdlflags='-Wl,-E' ;;
+#esac
+
+case "`uname -r`" in
+sparc-linux)
+ case "$cccdlflags" in
+ *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;;
+ *) cccdlflags="$cccdlflags -fPIC" ;;
+ esac
+ ;;
+esac
+
+# This script UU/usethreads.cbu will get 'called-back' by Configure
+# after it has prompted the user for whether to use threads.
+cat > UU/usethreads.cbu <<'EOCBU'
+case "$usethreads" in
+$define|true|[yY]*)
+ ccflags="-D_REENTRANT $ccflags"
+ set `echo X "$libswanted "| sed -e 's/ c / pthread c /'`
+ shift
+ libswanted="$*"
+ ;;
+esac
+EOCBU
+
+cat > UU/uselargefiles.cbu <<'EOCBU'
+# This script UU/uselargefiles.cbu will get 'called-back' by Configure
+# after it has prompted the user for whether to use large files.
+case "$uselargefiles" in
+''|$define|true|[yY]*)
+ ccflags="$ccflags -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
+ ;;
+esac
+EOCBU
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