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/* Subroutines for the gcc driver.
Copyright (C) 2009-2017 Free Software Foundation, Inc.
Contributed by Georg-Johann Lay <avr@gjlay.de>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "diagnostic.h"
#include "tm.h"
// Remove -nodevicelib from the command line if not needed
#define X_NODEVLIB "%<nodevicelib"
static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
/* Implement spec function `device-specs-file´.
Validate mcu name given with -mmcu option. Compose
-specs=<specs-file-name>%s. If everything went well then argv[0] is the
inflated (absolute) first device-specs directory and argv[1] is a device
or core name as supplied by -mmcu=*. When building GCC the path might be
relative. */
const char*
avr_devicespecs_file (int argc, const char **argv)
{
const char *mmcu = NULL;
#ifdef DEBUG_SPECS
if (verbose_flag)
fnotice (stderr, "Running spec function '%s' with %d args\n\n",
__FUNCTION__, argc);
#endif
switch (argc)
{
case 0:
fatal_error (input_location,
"bad usage of spec function %qs", "device-specs-file");
return X_NODEVLIB;
case 1:
if (0 == strcmp ("device-specs", argv[0]))
{
/* FIXME: This means "device-specs%s" from avr.h:DRIVER_SELF_SPECS
has not been resolved to a path. That case can occur when the
c++ testsuite is run from the build directory. DejaGNU's
libgloss.exp:get_multilibs runs $compiler without -B, i.e.runs
xgcc without specifying a prefix. Without any prefix, there is
no means to find out where the specs files might be located.
get_multilibs runs xgcc --print-multi-lib, hence we don't actually
need information form a specs file and may skip it here. */
return X_NODEVLIB;
}
mmcu = AVR_MMCU_DEFAULT;
break;
default:
mmcu = argv[1];
// Allow specifying the same MCU more than once.
for (int i = 2; i < argc; i++)
if (0 != strcmp (mmcu, argv[i]))
{
error ("specified option %qs more than once", "-mmcu");
return X_NODEVLIB;
}
break;
}
// Filter out silly -mmcu= arguments like "foo bar".
for (const char *s = mmcu; *s; s++)
if (!ISALNUM (*s)
&& '-' != *s
&& '_' != *s)
{
error ("strange device name %qs after %qs: bad character %qc",
mmcu, "-mmcu=", *s);
return X_NODEVLIB;
}
return concat ("-specs=device-specs", dir_separator_str, "specs-",
mmcu, "%s"
#if defined (WITH_AVRLIBC)
" %{mmcu=avr*:" X_NODEVLIB "} %{!mmcu=*:" X_NODEVLIB "}",
#else
" " X_NODEVLIB,
#endif
NULL);
}
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