Making hardcode.test more robust [patch against HEAD]

[libtool]

The fgrep of .libs in the executable to detect if .libs was hardcoded
is very weak. Methinks a much better approach is to dump the .dynamic
section of the executable and look at RPATH (or equivalent). Patch
below to override the fgrep test for IRIX 6.x, Solaris 2.x, and Tru64
UNIX 4.x, 5.x.

-- 
albert chin (address@hidden)

-- snip snip
Index: tests/hardcode.test
===================================================================
RCS file: /home/cvs/libtool/tests/hardcode.test,v
retrieving revision 1.4
diff -u -3 -p -r1.4 hardcode.test
--- tests/hardcode.test 2000/09/06 17:31:09     1.4
+++ tests/hardcode.test 2001/04/22 06:37:54
@@ -50,6 +50,9 @@ hardcode_libdir_flag_spec=NONE
 # Suck in all the hardcode_* variable settings.
 eval `egrep -e '^hardcode_' ./libtool 2>/dev/null`
 
+# Suck host host type
+eval `egrep -e '^host=' ./libtool 2>/dev/null`
+
 if test "$hardcode_direct" = NONE; then
   echo "hardcode_direct not set in ../demo/libtool" 1>&2
   status=1
@@ -108,6 +111,33 @@ for file in hc-*; do
     hardcoded=yes
   elif (sed -e '1!d' $file | egrep 'unsupported') >/dev/null 2>&1; then
     hardcoded=unsupported
+  fi
+
+  # Look at .dynamic section where possible
+  if test "x$hardcoded" = "xyes"; then
+    case "$host" in
+    alpha-dec-osf[45]*)
+      hardcoded=no
+      if odump -D $file 2>/dev/null | fgrep RPATH | \
+      fgrep "$objdir" >/dev/null 2>&1; then
+        hardcoded=yes
+      fi
+      ;;
+    mips-sgi-irix6*)
+      hardcoded=no
+      if elfdump -L $file 2>/dev/null | grep RPATH | \
+      fgrep "$objdir" >/dev/null 2>&1; then
+        hardcoded=yes
+      fi
+      ;;
+    *-solaris2*)
+      hardcoded=no
+      if elfdump -d $file 2>/dev/null | grep RPATH | \
+      fgrep "$objdir" >/dev/null 2>&1; then
+        hardcoded=yes
+      fi
+      ;;
+    esac
   fi
 
   # Check the result.