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/**
* Buildroot wrapper for external toolchains. This simply executes the real
* toolchain with a number of arguments (sysroot/arch/..) hardcoded,
* to ensure the external toolchain uses the correct configuration.
*
* (C) 2011 Peter Korsgaard <jacmet@sunsite.dk>
* (C) 2011 Daniel Nyström <daniel.nystrom@timeterminal.se>
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <unistd.h>
#include <stdlib.h>
static char path[PATH_MAX] = BR_CROSS_PATH;
static char *predef_args[] = {
path,
"--sysroot", BR_SYSROOT,
#ifdef BR_ARCH
"-march=" BR_ARCH,
#endif /* BR_ARCH */
#ifdef BR_TUNE
"-mtune=" BR_TUNE,
#endif /* BR_TUNE */
#ifdef BR_CPU
"-mcpu=" BR_CPU,
#endif
#ifdef BR_ABI
"-mabi=" BR_ABI,
#endif
#ifdef BR_SOFTFLOAT
"-msoft-float",
#endif /* BR_SOFTFLOAT */
#ifdef BR_VFPFLOAT
"-mfpu=vfp",
#endif /* BR_VFPFLOAT */
#ifdef BR_64
"-m64",
#endif
#ifdef BR_ADDITIONAL_CFLAGS
BR_ADDITIONAL_CFLAGS
#endif
};
static const char *get_basename(const char *name)
{
const char *base;
base = strrchr(name, '/');
if (base)
base++;
else
base = name;
return base;
}
int main(int argc, char **argv)
{
char **args, **cur;
cur = args = malloc(sizeof(predef_args) + (sizeof(char *) * argc));
if (args == NULL) {
perror(__FILE__ ": malloc");
return 2;
}
/* start with predefined args */
memcpy(cur, predef_args, sizeof(predef_args));
cur += sizeof(predef_args) / sizeof(predef_args[0]);
/* append forward args */
memcpy(cur, &argv[1], sizeof(char *) * (argc - 1));
cur += argc - 1;
/* finish with NULL termination */
*cur = NULL;
strcat(path, get_basename(argv[0]));
if (execv(path, args))
perror(path);
free(args);
return 2;
}
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