perl 5.003: hints/linux.sh

Allow Configure to determine malloctype
Don't mess with $nm_so_opt
Make sure messages get to the right places
Disable NDBM, since some systems have problems with the libraries
Don't use gcvt() to print floats; it's buggy in some versions of libc

diff --git a/hints/linux.sh b/hints/linux.sh
index 4e13fd3..b76ee89 100644 (file)
--- a/hints/linux.sh
+++ b/hints/linux.sh
@@ -9,7 +9,11 @@
 # Consolidated by Andy Dougherty <doughera@lafcol.lafayette.edu>
 #
 # Updated Thu Feb  8 11:56:10 EST 1996
-# Add ability to use command-line overrides for optinal settings.
+
+# Updated Thu May 30 10:50:22 EDT 1996 by <doughera@lafcol.lafayette.edu>
+
+# Updated Fri Jun 21 11:07:54 EDT 1996
+# NDBM support for ELF renabled by <kjahds@kjahds.com>
 
 # perl goes into the /usr tree.  See the Filesystem Standard
 # available via anonymous FTP at tsx-11.mit.edu in
@@ -19,7 +23,6 @@ case "$prefix" in
 '') prefix='/usr' ;;
 esac
 
-# This may not be needed in 5.002 since sigaction is used.
 # gcc-2.6.3 defines _G_HAVE_BOOL to 1, but doesn't actually supply bool.
 ccflags="-Dbool=char -DHAS_BOOL $ccflags"
 
@@ -32,9 +35,6 @@ libswanted="$*"
 # function in <sys/stat.h>.
 d_lstat=define
 
-# I think Configure gets this right now, but I'd appreciate reports.
-malloctype='void *'
-
 # Explanation?
 case "$usemymalloc" in
 '') usemymalloc='n' ;;
@@ -64,13 +64,18 @@ main() {
 }
 EOM
 if ${cc:-gcc} try.c >/dev/null 2>&1 && ./a.out; then
-    cat <<'EOM'
+    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
-    nm_so_opt='-dynamic'
+
+#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'
+    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
@@ -92,45 +97,67 @@ EOM
     ## uncomment the next two lines:
     #ldflags="-static"
     #so='none'
+
+       # 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
+
+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'
-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.
+  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
 
-# 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.  Currently we disable NDBM for all 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>
+# Avoid some troublesome gcvt() functions.  With some libc versions, 
+# perl -e '$x=1e5; print "$x\n";' prints 1e+5.  We'd like it
+# to print 100000 instead, consistent with the integer value given
+# on other platforms.  This isn't a bug in gcvt, really; more in our
+# expectations for it.  We'd like it to behave exactly as
+# sprintf %.16g, but it isn't documented to do that.
 #
-# 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.
+# We'll use sprintf() instead, since we can control the output more
+# precisely.
 # 
-# 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 message:
-# Hmm...You had some extra variables I don't know about...I'll try to keep 'em.
-#      Propagating recommended variable d_dbm_open
-case "$d_dbm_open" in
-'') d_dbm_open=undef ;;
-esac
+# The next version of Configure will check for this automatically.
+d_Gconvert='sprintf((b),"%.*g",(n),(x))'