diff options
Diffstat (limited to 'toolchain/toolchain-external/ext-toolchain-wrapper.c')
-rw-r--r-- | toolchain/toolchain-external/ext-toolchain-wrapper.c | 64 |
1 files changed, 47 insertions, 17 deletions
diff --git a/toolchain/toolchain-external/ext-toolchain-wrapper.c b/toolchain/toolchain-external/ext-toolchain-wrapper.c index 82595eaa7..a92badac0 100644 --- a/toolchain/toolchain-external/ext-toolchain-wrapper.c +++ b/toolchain/toolchain-external/ext-toolchain-wrapper.c @@ -2,9 +2,12 @@ * 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. + * The hardcoded path arguments are defined relative to the actual location + * of the binary. * * (C) 2011 Peter Korsgaard <jacmet@sunsite.dk> * (C) 2011 Daniel Nyström <daniel.nystrom@timeterminal.se> + * (C) 2012 Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> * * 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 @@ -17,11 +20,12 @@ #include <unistd.h> #include <stdlib.h> -static char path[PATH_MAX] = BR_CROSS_PATH; +static char path[PATH_MAX]; +static char sysroot[PATH_MAX]; static char *predef_args[] = { path, - "--sysroot", BR_SYSROOT, + "--sysroot", sysroot, #ifdef BR_ARCH "-march=" BR_ARCH, #endif /* BR_ARCH */ @@ -48,22 +52,50 @@ static char *predef_args[] = { #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; + char *relbasedir, *absbasedir; + char *progpath = argv[0]; + char *basename; + int ret; + + /* Calculate the relative paths */ + basename = strrchr(progpath, '/'); + if (basename) { + *basename = '\0'; + basename++; + relbasedir = malloc(strlen(progpath) + 7); + if (relbasedir == NULL) { + perror(__FILE__ ": malloc"); + return 2; + } + sprintf(relbasedir, "%s/../..", argv[0]); + absbasedir = realpath(relbasedir, NULL); + } else { + basename = progpath; + absbasedir = realpath("../..", NULL); + } + if (absbasedir == NULL) { + perror(__FILE__ ": realpath"); + return 2; + } + + /* Fill in the relative paths */ +#ifdef BR_CROSS_PATH_REL + ret = snprintf(path, sizeof(path), "%s/" BR_CROSS_PATH_REL "/%s", absbasedir, basename); +#else /* BR_CROSS_PATH_ABS */ + ret = snprintf(path, sizeof(path), BR_CROSS_PATH_ABS "/%s", basename); +#endif + if (ret >= sizeof(path)) { + perror(__FILE__ ": overflow"); + return 3; + } + ret = snprintf(sysroot, sizeof(sysroot), "%s/" BR_SYSROOT, absbasedir); + if (ret >= sizeof(sysroot)) { + perror(__FILE__ ": overflow"); + return 3; + } cur = args = malloc(sizeof(predef_args) + (sizeof(char *) * argc)); if (args == NULL) { @@ -82,8 +114,6 @@ int main(int argc, char **argv) /* finish with NULL termination */ *cur = NULL; - strcat(path, get_basename(argv[0])); - if (execv(path, args)) perror(path); |