X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=hints%2Flinux.sh;h=86b0241c999289d6107a4c8a44da1d4734b496f6;hb=699e6cd4da8c333ef83554732e73ab6734463b5d;hp=97be1d76cdf62a357b39487e9797532bf256209f;hpb=1fc4cb5503ed4e568f4cafd2aff20f315226e3bd;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/hints/linux.sh b/hints/linux.sh
index 97be1d7..86b0241 100644
--- a/hints/linux.sh
+++ b/hints/linux.sh
@@ -2,50 +2,154 @@
 # 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>
 
+# No version of Linux supports setuid scripts.
+d_suidsafe='undef'
 d_dosuid='define'
 
-malloctype='void *'
-usemymalloc='n'
+# 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
+case "$prefix" in
+'') prefix='/usr' ;;
+esac
+
+# gcc-2.6.3 defines _G_HAVE_BOOL to 1, but doesn't actually supply bool.
+ccflags="-Dbool=char -DHAS_BOOL $ccflags"
+
+# BSD compatability library no longer needed
+set `echo X "$libswanted "| sed -e 's/ bsd / /'`
+shift
+libswanted="$*"
+
+# Configure may fail to find lstat() since it's a static/inline
+# function in <sys/stat.h>.
+d_lstat=define
+
+# Explanation?
+case "$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
+
+