binutils testsuite: canonicalize subtest names in libctf

Previous code included the full $srcdir pathnames in the individual
subtest PASS/FAIL names, which makes it difficult to compute
comparisons or regressions between test runs on different machines.
This version switches to the basename only, which are common.

Signed-off-by: Frank Ch. Eigler <fche@redhat.com>

libctf/testsuite/lib/ctf-lib.exp

diff --git a/libctf/testsuite/lib/ctf-lib.exp b/libctf/testsuite/lib/ctf-lib.exp
index cfd36be..966c5a9 100644
--- a/libctf/testsuite/lib/ctf-lib.exp
+++ b/libctf/testsuite/lib/ctf-lib.exp
@@ -136,11 +136,13 @@
     } else {
 	set file "$srcdir/$subdir/$name"
     }
+    # strip off the srcdir, which contains build host specific pathnames
+    set file4log [string map [list $srcdir/ ""] $file]
 
     set opt_array [slurp_options "${file}.lk"]
     if { $opt_array == -1 } {
 	perror "error reading options from $file.lk"
-	unresolved $subdir/$name
+	unresolved $file4log
 	return
     }
     set run_ld 0
@@ -166,7 +168,7 @@
 	}
 	if ![info exists opts($opt_name)] {
 	    perror "unknown option $opt_name in file $file.lk"
-	    unresolved $subdir/$name
+	    unresolved $file4log
 	    return
 	}
 
@@ -175,12 +177,12 @@
 
     if { [llength $opts(no_cross)] != 0
 	 && "$TEST_CROSS" eq "yes" } {
-	untested "$subdir/$name not tested when cross-compiling"
+	untested "$file4log not tested when cross-compiling"
 	return
     }
 
     if { [llength $opts(host)] != 0 && ![ishost $opts(host)] } {
-	untested "$subdir/$name only runs on $opts(host)"
+	untested "$file4log only runs on $opts(host)"
 	return
     }
 
@@ -203,10 +205,7 @@
 	set shared ""
     }
 
-    set testname $opts(name)
-    if { $opts(name) == "" } {
-	set testname "$subdir/$name"
-    }
+    set testname $file4log
 
     # Compile and link the lookup program.
     set comp_output [prune_warnings [compile_link_one_host_cc $opts(lookup) "tmpdir/lookup" "libctf.la $opts(lookup_link)"]]