PATCH: fix gcc.misc-tests/options.exp on testglue targets

[Ben Elliston <bje at au1 dot ibm dot com>]

My original attempt at writing options.exp didn't work for Hans-Peter Nilsson, as his
target uses testglue.  Using -xc was causing problems when reading testglue.o as a C
program :-)  Here is a patch that creates a real C program and links it into a real
executable, deleting both afterwards.  Okay for mainline?

2005-03-15  Ben Elliston  <bje@au.ibm.com>

        * gcc.misc-tests/options.exp (check_for_options): Create a real C
        program, compile it into a real executable and then delete the .c
        and .x files afterwards, to avoid problems on testglue targets.

Index: options.exp
===================================================================
RCS file: /home/bje/gcc-cvs/gcc/gcc/testsuite/gcc.misc-tests/options.exp,v
retrieving revision 1.1
diff -u -p -r1.1 options.exp
--- options.exp 4 Mar 2005 05:15:52 -0000       1.1
+++ options.exp 15 Mar 2005 05:03:34 -0000
@@ -20,15 +20,20 @@
 # respectively.

 proc check_for_options {language gcc_options compiler_pattern as_pattern ld_pat
tern} {
+    set fd [open test.c w]
+    puts $fd "int main() \{ return 0; \}"
+    close $fd
+    remote_download host test.c
+
     set test "compiler driver $gcc_options option(s)"
     set gcc_options "\{additional_flags=$gcc_options -v\}"
-    set src "-x$language /dev/null"

     switch "$language" {
        "c" { set compiler cc1 }
        default { error "unknown language" }
     }
-    set gcc_output [gcc_target_compile $src /dev/null executable $gcc_options]
+    set gcc_output [gcc_target_compile test.c test.x executable $gcc_options]
+    remote_file build delete test.c test.x

     if {![regexp -- "/$compiler -quiet.*$compiler_pattern" $gcc_output]} {
        fail "$test (compiler options)"

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