Do not build libctf for targets that do not use the ELF file format.

top	* configure.ac (noconfigdirs): Add libctf if the target does not use
	the ELF file format.
	* configure: Regenerate.

binutils* configure.ac (LIBCTF): Export.  Set to empty for non-ELF based
	targets.
	(HAVE_LIBCTF): Define if libctf support is available.
	* Makefile.am (LIBCTF): Set value to @LIBCTF@.
	* objdump.c: Make CTF code conditional upon HAVE_LIBCTF being
	defined.
	* readelf.c: Likewise.
	* configure: Regenerate.
	* Makefile.in: Regenerate.
	* config.in: Regenerate.

binutils/objdump.c

@@ -56,7 +56,9 @@
 #include "bucomm.h"
 #include "elfcomm.h"
 #include "dwarf.h"
+#ifdef HAVE_LIBCTF
 #include "ctf-api.h"
+#endif
 #include "getopt.h"
 #include "safe-ctype.h"
 #include "dis-asm.h"
@@ -99,9 +101,11 @@ static bfd_boolean with_source_code;	/* -S */
 static int show_raw_insn;		/* --show-raw-insn */
 static int dump_dwarf_section_info;	/* --dwarf */
 static int dump_stab_section_info;	/* --stabs */
+#ifdef HAVE_LIBCTF
 static int dump_ctf_section_info;       /* --ctf */
 static char *dump_ctf_section_name;
 static char *dump_ctf_parent_name;	/* --ctf-parent */
+#endif
 static int do_demangle;			/* -C, --demangle */
 static bfd_boolean disassemble;		/* -d */
 static bfd_boolean disassemble_all;	/* -D */
@@ -228,8 +232,12 @@ usage (FILE *stream, int status)
           =frames-interp,=str,=loc,=Ranges,=pubtypes,\n\
           =gdb_index,=trace_info,=trace_abbrev,=trace_aranges,\n\
           =addr,=cu_index,=links,=follow-links]\n\
-                           Display DWARF info in the file\n\
-  --ctf=SECTION            Display CTF info from SECTION\n\
+                           Display DWARF info in the file\n"));
+#ifdef HAVE_LIBCTF
+  fprintf (stream, _("\
+  --ctf=SECTION            Display CTF info from SECTION\n"));
+#endif
+  fprintf (stream, _("\
   -t, --syms               Display the contents of the symbol table(s)\n\
   -T, --dynamic-syms       Display the contents of the dynamic symbol table\n\
   -r, --reloc              Display the relocation entries in the file\n\
@@ -278,8 +286,11 @@ usage (FILE *stream, int status)
       --dwarf-start=N        Display DIEs starting with N, at the same depth\n\
                              or deeper\n\
       --dwarf-check          Make additional dwarf internal consistency checks.\
-      \n\
+      \n"));
+#ifdef HAVE_LIBCTF
+      fprintf (stream, _("\
       --ctf-parent=SECTION     Use SECTION as the CTF parent\n\n"));
+#endif
       list_supported_targets (program_name, stream);
       list_supported_architectures (program_name, stream);
 
@@ -314,9 +325,11 @@ enum option_values
     OPTION_DWARF_START,
     OPTION_RECURSE_LIMIT,
     OPTION_NO_RECURSE_LIMIT,
-    OPTION_INLINES,
+#ifdef HAVE_LIBCTF
     OPTION_CTF,
-    OPTION_CTF_PARENT
+    OPTION_CTF_PARENT,
+#endif
+    OPTION_INLINES
   };
 
 static struct option long_options[]=
@@ -359,8 +372,10 @@ static struct option long_options[]=
   {"special-syms", no_argument, &dump_special_syms, 1},
   {"include", required_argument, NULL, 'I'},
   {"dwarf", optional_argument, NULL, OPTION_DWARF},
+#ifdef HAVE_LIBCTF
   {"ctf", required_argument, NULL, OPTION_CTF},
   {"ctf-parent", required_argument, NULL, OPTION_CTF_PARENT},
+#endif
   {"stabs", no_argument, NULL, 'G'},
   {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
   {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
@@ -3199,6 +3214,7 @@ dump_bfd_header (bfd *abfd)
 }
 
 
+#ifdef HAVE_LIBCTF
 /* Formatting callback function passed to ctf_dump.  Returns either the pointer
    it is passed, or a pointer to newly-allocated storage, in which case
    dump_ctf() will free it when it no longer needs it.  */
@@ -3216,6 +3232,7 @@ dump_ctf_indent_lines (ctf_sect_names_t sect ATTRIBUTE_UNUSED,
 }
 
 /* Make a ctfsect suitable for ctf_bfdopen_ctfsect().  */
+
 static ctf_sect_t
 make_ctfsect (const char *name, bfd_byte *data,
 	      bfd_size_type size)
@@ -3331,8 +3348,8 @@ dump_ctf (bfd *abfd, const char *sect_name, const char *parent_name)
   free (parentdata);
   free (ctfdata);
 }
+#endif /* HAVE_LIBCTF */
 
-
 static void
 dump_bfd_private_header (bfd *abfd)
 {
@@ -4043,8 +4060,10 @@ dump_bfd (bfd *abfd, bfd_boolean is_mainfile)
     dump_symbols (abfd, TRUE);
   if (dump_dwarf_section_info)
     dump_dwarf (abfd);
+#ifdef HAVE_LIBCTF
   if (dump_ctf_section_info)
     dump_ctf (abfd, dump_ctf_section_name, dump_ctf_parent_name);
+#endif
   if (dump_stab_section_info)
     dump_stabs (abfd);
   if (dump_reloc_info && ! disassemble)
@@ -4484,6 +4503,7 @@ main (int argc, char **argv)
 	case OPTION_DWARF_CHECK:
 	  dwarf_check = TRUE;
 	  break;
+#ifdef HAVE_LIBCTF
         case OPTION_CTF:
           dump_ctf_section_info = TRUE;
           dump_ctf_section_name = xstrdup (optarg);
@@ -4492,6 +4512,7 @@ main (int argc, char **argv)
 	case OPTION_CTF_PARENT:
 	  dump_ctf_parent_name = xstrdup (optarg);
 	  break;
+#endif
 	case 'G':
 	  dump_stab_section_info = TRUE;
 	  seenflag = TRUE;
@@ -4551,9 +4572,10 @@ main (int argc, char **argv)
     }
 
   free_only_list ();
+#ifdef HAVE_LIBCTF
   free (dump_ctf_section_name);
   free (dump_ctf_parent_name);
-
+#endif
   END_PROGRESS (program_name);
 
   return exit_status;