+2010-04-08 Manuel López-Ibáñez <manu@gcc.gnu.org>
+
+ PR 42485
+ * doc/invoke.texi (-b,-V): Delete.
+ * doc/tm.texi: Do not mention -b.
+ * gcc.c (display_help): Delete -b and -V.
+ (process_command): Delete -b and -V.
+ * gcc.h (DEFAULT_SWITCH_TAKES_ARG): Delete -b and -V.
+
2010-04-08 Christian Borntraeger <borntraeger@de.ibm.com>
Wolfgang Gellerich <gellerich@de.ibm.com>
@gccoptlist{-B@var{prefix} -I@var{dir} -iquote@var{dir} -L@var{dir}
-specs=@var{file} -I- --sysroot=@var{dir}}
-@item Target Options
-@c I wrote this xref this way to avoid overfull hbox. -- rms
-@xref{Target Options}.
-@gccoptlist{-V @var{version} -b @var{machine}}
-
@item Machine Dependent Options
@xref{Submodel Options,,Hardware Models and Configurations}.
@c This list is ordered alphanumerically by subsection name.
The usual way to run GCC is to run the executable called @file{gcc}, or
@file{<machine>-gcc} when cross-compiling, or
@file{<machine>-gcc-<version>} to run a version other than the one that
-was installed last. Sometimes this is inconvenient, so GCC provides
-options that will switch to another cross-compiler or version.
-
-@table @gcctabopt
-@item -b @var{machine}
-@opindex b
-The argument @var{machine} specifies the target machine for compilation.
-
-The value to use for @var{machine} is the same as was specified as the
-machine type when configuring GCC as a cross-compiler. For
-example, if a cross-compiler was configured with @samp{configure
-arm-elf}, meaning to compile for an arm processor with elf binaries,
-then you would specify @option{-b arm-elf} to run that cross compiler.
-Because there are other options beginning with @option{-b}, the
-configuration must contain a hyphen, or @option{-b} alone should be one
-argument followed by the configuration in the next argument.
-
-@item -V @var{version}
-@opindex V
-The argument @var{version} specifies which version of GCC to run.
-This is useful when multiple versions are installed. For example,
-@var{version} might be @samp{4.0}, meaning to run GCC version 4.0.
-@end table
-
-The @option{-V} and @option{-b} options work by running the
-@file{<machine>-gcc-<version>} executable, so there's no real reason to
-use them if you can just run that directly.
+was installed last.
@node Submodel Options
@section Hardware Models and Configurations
@cindex hardware models and configurations, specifying
@cindex machine dependent options
-Earlier we discussed the standard option @option{-b} which chooses among
-different installed compilers for completely different target
-machines, such as VAX vs.@: 68000 vs.@: 80386.
-
-In addition, each of these target machine types can have its own
+Each target machine types can have its own
special options, starting with @samp{-m}, to choose among various
hardware models or configurations---for example, 68010 vs 68020,
floating coprocessor or none. A single installed version of the
@defmac MD_EXEC_PREFIX
If defined, this macro is an additional prefix to try after
@code{STANDARD_EXEC_PREFIX}. @code{MD_EXEC_PREFIX} is not searched
-when the @option{-b} option is used, or the compiler is built as a cross
+when the compiler is built as a cross
compiler. If you define @code{MD_EXEC_PREFIX}, then be sure to add it
to the list of directories used to find the assembler in @file{configure.in}.
@end defmac
@defmac MD_STARTFILE_PREFIX
If defined, this macro supplies an additional prefix to try after the
standard prefixes. @code{MD_EXEC_PREFIX} is not searched when the
-@option{-b} option is used, or when the compiler is built as a cross
-compiler.
+compiler is built as a cross compiler.
@end defmac
@defmac MD_STARTFILE_PREFIX_1
If defined, this macro supplies yet another prefix to try after the
-standard prefixes. It is not searched when the @option{-b} option is
-used, or when the compiler is built as a cross compiler.
+standard prefixes. It is not searched when the compiler is built as a
+cross compiler.
@end defmac
@defmac INIT_ENVIRONMENT
static const char *compiler_version;
-/* The target version specified with -V */
+/* The target version. */
static const char *const spec_version = DEFAULT_TARGET_VERSION;
-/* The target machine specified with -b. */
+/* The target machine. */
static const char *spec_machine = DEFAULT_TARGET_MACHINE;
--sysroot=<directory> Use <directory> as the root directory for headers\n\
and libraries\n"), stdout);
fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
- fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout);
- fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout);
fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
}
}
- /* If there is a -V or -b option (or both), process it now, before
- trying to interpret the rest of the command line.
- Use heuristic that all configuration names must have at least
- one dash '-'. This allows us to pass options starting with -b. */
- if (argc > 1 && argv[1][0] == '-'
- && (argv[1][1] == 'V'
- || (argv[1][1] == 'b'
- && (argv[1][2] == '\0'
- || NULL != strchr (argv[1] + 2, '-')))))
- {
- const char *new_version = DEFAULT_TARGET_VERSION;
- const char *new_machine = DEFAULT_TARGET_MACHINE;
- const char *progname = argv[0];
- char **new_argv;
- char *new_argv0;
- int baselen;
- int status = 0;
- int err = 0;
- const char *errmsg;
-
- while (argc > 1 && argv[1][0] == '-'
- && (argv[1][1] == 'V'
- || (argv[1][1] == 'b'
- && (argv[1][2] == '\0'
- || NULL != strchr (argv[1] + 2, '-')))))
- {
- char opt = argv[1][1];
- const char *arg;
- if (argv[1][2] != '\0')
- {
- arg = argv[1] + 2;
- argc -= 1;
- argv += 1;
- }
- else if (argc > 2)
- {
- arg = argv[2];
- argc -= 2;
- argv += 2;
- }
- else
- fatal ("'-%c' option must have argument", opt);
- if (opt == 'V')
- new_version = arg;
- else
- new_machine = arg;
- }
-
- for (baselen = strlen (progname); baselen > 0; baselen--)
- if (IS_DIR_SEPARATOR (progname[baselen-1]))
- break;
- new_argv0 = XDUPVAR (char, progname, baselen,
- baselen + concat_length (new_version, new_machine,
- "-gcc-", NULL) + 1);
- strcpy (new_argv0 + baselen, new_machine);
- strcat (new_argv0, "-gcc-");
- strcat (new_argv0, new_version);
-
- new_argv = XDUPVEC (char *, argv, argc + 1);
- new_argv[0] = new_argv0;
-
- errmsg = pex_one (PEX_SEARCH, new_argv0, new_argv, progname, NULL,
- NULL, &status, &err);
-
- if (errmsg)
- {
- if (err == 0)
- fatal ("couldn't run '%s': %s", new_argv0, errmsg);
- else
- fatal ("couldn't run '%s': %s: %s", new_argv0, errmsg,
- xstrerror (err));
- }
- exit (status);
- }
-
/* Convert new-style -- options to old-style. */
translate_options (&argc,
CONST_CAST2 (const char *const **, const char ***,
switch (c)
{
- case 'b':
- if (p[1] && NULL == strchr (argv[i] + 2, '-'))
- goto normal_switch;
-
- /* Fall through. */
- case 'V':
- fatal ("'-%c' must come at the start of the command line", c);
- break;
-
case 'B':
{
const char *value;
|| (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
|| (CHAR) == 'I' || (CHAR) == 'J' || (CHAR) == 'm' \
|| (CHAR) == 'x' || (CHAR) == 'L' || (CHAR) == 'A' \
- || (CHAR) == 'V' || (CHAR) == 'B' || (CHAR) == 'b')
+ || (CHAR) == 'B' )
/* This defines which multi-letter switches take arguments. */
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