gdb: 'show config' shows --with[out]-amd-dbgapi

Ensure that the "show configuration" command and the "--configuration"
command line switch shows if GDB was built with the AMDGPU support or
not.

This will be used in a later patch in this series.

Approved-By: Simon Marchi <simon.marchi@efficios.com>

gdb/config.in

@@ -84,6 +84,9 @@
    */
 #undef HAVE_ALLOCA_H
 
+/* Define if amd-dbgapi is being linked in. */
+#undef HAVE_AMD_DBGAPI
+
 /* Define to 1 if you have the `btowc' function. */
 #undef HAVE_BTOWC
 

gdb/configure

@@ -18252,6 +18252,9 @@ $as_echo "yes" >&6; }
 fi
 
   if test "$has_amd_dbgapi" = "yes"; then
+
+$as_echo "#define HAVE_AMD_DBGAPI 1" >>confdefs.h
+
     TARGET_OBS="$TARGET_OBS amd-dbgapi-target.o"
 
     # If --enable-targets=all was provided, use the list of all files depending

gdb/configure.ac

@@ -275,6 +275,7 @@ if test "$gdb_require_amd_dbgapi" = true \
 		    [has_amd_dbgapi=yes], [has_amd_dbgapi=no])
 
   if test "$has_amd_dbgapi" = "yes"; then
+    AC_DEFINE(HAVE_AMD_DBGAPI, 1, [Define if amd-dbgapi is being linked in.])
     TARGET_OBS="$TARGET_OBS amd-dbgapi-target.o"
 
     # If --enable-targets=all was provided, use the list of all files depending

gdb/top.c

@@ -1629,6 +1629,16 @@ This GDB was configured as follows:\n\
 "));
 #endif
 
+#if HAVE_AMD_DBGAPI
+  gdb_printf (stream, _("\
+	     --with-amd-dbgapi\n\
+"));
+#else
+  gdb_printf (stream, _("\
+	     --without-amd-dbgapi\n\
+"));
+#endif
+
 #if HAVE_SOURCE_HIGHLIGHT
   gdb_printf (stream, _("\
 	     --enable-source-highlight\n\