X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=hints%2Flinux.sh;h=9837ee8031318c57d21cad07a1ebae7446c0a6b0;hb=0fa156b9cc6e57c94350bf8b3486af3d1c7dd41d;hp=82b8703232f34203f01f502c59e95a77e6626619;hpb=c1d22f6b609261e5abd7381bd017773c7ae58346;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/hints/linux.sh b/hints/linux.sh
index 82b8703..9837ee8 100644
--- a/hints/linux.sh
+++ b/hints/linux.sh
@@ -63,7 +63,7 @@ ignore_versioned_solibs='y'
 # 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 5.006_50 and beyond.
+# These notes can probably safely be removed in 5.005_50 and beyond.
 #
 #	9 April 1999  Andy Dougherty  <doughera@lafayette.edu>
 #
@@ -97,7 +97,19 @@ case "$usemymalloc" in
 esac
 
 case "$optimize" in
-'') optimize='-O2' ;;
+'') # If we have modern enough gcc and well-supported enough CPU,
+    # crank up the optimization level.
+    case "`${cc:-gcc} -v 2>&1`" in
+    *gcc-2.95*|*gcc-3.*)
+        case "`arch 2>&1`" in
+        i?86|ppc) optimize='-O3' ;;
+        esac
+        ;;
+    esac
+    case "$optimize" in
+    '') optimize='-O2' ;;
+    esac
+    ;;
 esac
 
 # Are we using ELF?  Thanks to Kenneth Albanowski <kjahds@kjahds.com>
@@ -119,7 +131,7 @@ main() {
 	exit(0); /* succeed (yes, it's ELF) */
 }
 EOM
-if ${cc:-gcc} try.c >/dev/null 2>&1 && ./a.out; then
+if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then
     cat <<'EOM' >&4
 
 You appear to have ELF support.  I'll try to use it for dynamic loading.
@@ -189,7 +201,7 @@ fi
 
 rm -f try.c a.out
 
-if /bin/bash -c exit; then
+if /bin/sh -c exit; then
   echo ''
   echo 'You appear to have a working bash.  Good.'
 else
@@ -219,21 +231,22 @@ fi
 # 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)
+# November 2001:  That warning's pretty old now and probably not so
+# relevant, especially since perl now uses File::Glob for globbing.
+# We'll still look for tcsh, but tone down the warnings.
+# Andy Dougherty, Nov. 6, 2001
+if $csh -c 'echo $version' >/dev/null 2>&1; then
+    echo 'Your csh is really tcsh.  Good.'
+else
     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."
+    elif [ -f "$csh" ]; then
+	echo "Couldn't find tcsh.  Csh-based globbing might be broken."
     fi
-else
-    echo 'Your csh is really tcsh.  Good.'
 fi
 
 # Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu>
@@ -276,3 +289,16 @@ $define|true|[yY]*)
 	;;
 esac
 EOCBU
+
+cat > UU/uselargefiles.cbu <<'EOCBU'
+# This script UU/uselargefiles.cbu will get 'called-back' by Configure 
+# after it has prompted the user for whether to use large files.
+case "$uselargefiles" in
+''|$define|true|[yY]*)
+# Keep this in the left margin.
+ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
+
+	ccflags="$ccflags $ccflags_uselargefiles"
+	;;
+esac
+EOCBU