* Makefile.in (ALL_SUBDIRS): Add gdb.objc

* configure.in (AC_OUTPUT): Add gdb.objc/Makefile
* gdb.objc/Makefile.in, gdb.objc/basicclass.exp,
gdb.objc/basicclass.m: : New files

* lib/gdb.exp (gdb_compile_objc): New procedure.

gdb/testsuite/gdb.objc/basicclass.m

@@ -0,0 +1,81 @@
+#include <objc/Object.h>
+
+@interface BasicClass: Object
+{
+  id object;
+}
++ newWithArg: arg;
+- doIt;
+- takeArg: arg;
+- printHi;
+- (int) printNumber: (int)number;
+- (const char *) myDescription;
+@end
+
+@interface BasicClass (Private)
+- hiddenMethod;
+@end
+
+@implementation BasicClass
++ newWithArg: arg
+{
+  id obj = [self new];
+  [obj takeArg: arg];
+  return obj;
+}
+
+- doIt
+{
+  return self;
+}
+
+- takeArg: arg
+{
+  object = arg;
+  [self hiddenMethod];
+  return self;
+}
+
+- printHi
+{
+  printf("Hi\n");
+  return self;
+}
+
+- (int) printNumber: (int)number
+{
+  printf("%d\n", number);
+  return number+1;
+}
+
+- (const char *) myDescription
+{
+  return "BasicClass gdb test object";
+}
+
+@end
+
+@implementation BasicClass (Private)
+- hiddenMethod
+{
+  return self;
+}
+@end
+
+int main (int argc, const char *argv[])
+{
+  id obj;
+  obj = [BasicClass new];
+  [obj takeArg: obj];
+  return 0;
+}
+
+const char *_NSPrintForDebugger(id object)
+{
+  /* This is not really what _NSPrintForDebugger should do, but it
+     is a simple test if gdb can call this function */
+  if (object && [object respondsTo: @selector(myDescription)])
+    return [object myDescription];
+
+  return NULL;
+}