gcc 3 defensiveness from H. Merijn B and Rafael.

p4raw-id: //depot/perl@16831

diff --git a/Configure b/Configure
index a1522f8..429e429 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -20,7 +20,7 @@
 
 # $Id: Head.U,v 3.0.1.9 1997/02/28 15:02:09 ram Exp $
 #
-# Generated on Sat May 25 22:51:20 EET DST 2002 [metaconfig 3.0 PL70]
+# Generated on Tue May 28 16:40:58 EET DST 2002 [metaconfig 3.0 PL70]
 # (with additional metaconfig patches by perlbug@perl.org)
 
 cat >c1$$ <<EOF
@@ -3766,6 +3766,17 @@ case "$ccname" in
 '') ccname="$cc" ;;
 esac
 
+# gcc 3.1 complains about adding -Idirectories that it already knows about,
+# so we will take those off from locincpth.
+case "$gccversion" in
+3*)
+    echo "main(){}">try.c
+    for incdir in `$cc -v -c try.c 2>&1 | \
+       sed '1,/^#include <\.\.\.>/d;/^End of search list/,$d;s/^ //'` ; do
+       locincpth=`echo $locincpth | sed s!$incdir!!`
+    done
+    $rm -f try try.*
+esac
 
 : decide how portable to be.  Allow command line overrides.
 case "$d_portable" in