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Implement ld --print-output-format.

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This commit is contained in:
Roland McGrath
2011-07-16 07:58:40 +00:00
parent 436ce5e7e6
commit 30824704e9
6 changed files with 32 additions and 2 deletions
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11
ld/ChangeLog
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@@ -1,3 +1,14 @@
2011-07-16 Roland McGrath <roland@hack.frob.com>
* ld.h (args_type): New field print_output_format.
* lexsup.c (enum option_values, ld_options, parse_args):
Handle --print-output-format.
* ldmain.c (main): Implement --print-output-format.
* ld.texinfo (Options): Document it.
* ldlang.c (lang_get_output_target): Don't return current_target
when it's NULL.
2011-07-15 Alan Modra <amodra@gmail.com>
* Makefile.am (e*.c): Sort.

3
ld/ld.h
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@@ -200,6 +200,9 @@ typedef struct {
input files. */
bfd_boolean accept_unknown_input_arch;
/* If TRUE we'll just print the default output on stdout. */
bfd_boolean print_output_format;
/* Big or little endian as set on command line. */
enum endian_enum endian;

7
ld/ld.texinfo
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@@ -1401,6 +1401,13 @@ default behaviour (of not listing the sections that are removed) can
be restored by specifying @samp{--no-print-gc-sections} on the command
line.
@kindex --print-output-format
@cindex output format
@item --print-output-format
Print the name of the default output format (perhaps influenced by
other command-line options). This is the string that would appear
in an @code{OUTPUT_FORMAT} linker script command (@pxref{File Commands}).
@cindex help
@cindex usage
@kindex --help

2
ld/ldlang.c
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@@ -3052,7 +3052,7 @@ lang_get_output_target (void)
/* No - has the current target been set to something other than
the default? */
if (current_target != default_target)
if (current_target != default_target && current_target != NULL)
return current_target;
/* No - can we determine the format of the first input file? */

5
ld/ldmain.c
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@@ -427,11 +427,14 @@ main (int argc, char **argv)
info_msg ("\n==================================================\n");
}
if (command_line.print_output_format)
info_msg ("%s\n", lang_get_output_target ());
lang_final ();
if (!lang_has_input_file)
{
if (version_printed)
if (version_printed || command_line.print_output_format)
xexit (0);
einfo (_("%P%F: no input files\n"));
}

6
ld/lexsup.c
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@@ -175,6 +175,7 @@ enum option_values
OPTION_PLUGIN_OPT,
#endif /* ENABLE_PLUGINS */
OPTION_DEFAULT_SCRIPT,
OPTION_PRINT_OUTPUT_FORMAT,
};
/* The long options. This structure is used for both the option
@@ -491,6 +492,8 @@ static const struct ld_option ld_options[] =
{ {"oformat", required_argument, NULL, OPTION_OFORMAT},
'\0', N_("TARGET"), N_("Specify target of output file"),
EXACTLY_TWO_DASHES },
{ {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
'\0', NULL, N_("Print default output format"), TWO_DASHES },
{ {"qmagic", no_argument, NULL, OPTION_IGNORE},
'\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
{ {"reduce-memory-overheads", no_argument, NULL,
@@ -1059,6 +1062,9 @@ parse_args (unsigned argc, char **argv)
case OPTION_OFORMAT:
lang_add_output_format (optarg, NULL, NULL, 0);
break;
case OPTION_PRINT_OUTPUT_FORMAT:
command_line.print_output_format = TRUE;
break;
#ifdef ENABLE_PLUGINS
case OPTION_PLUGIN:
if (plugin_opt_plugin (optarg))