const char *system_path(const char *path)
{
- if (!is_absolute_path(path) && argv0_path) {
- struct strbuf d = STRBUF_INIT;
- strbuf_addf(&d, "%s/%s", argv0_path, path);
- path = strbuf_detach(&d, NULL);
+#ifdef RUNTIME_PREFIX
+ static const char *prefix;
+#else
+ static const char *prefix = PREFIX;
+#endif
+ struct strbuf d = STRBUF_INIT;
+
+ if (is_absolute_path(path))
+ return path;
+
+#ifdef RUNTIME_PREFIX
+ assert(argv0_path);
+ assert(is_absolute_path(argv0_path));
+
+ if (!prefix) {
+ const char *strip[] = {
+ GIT_EXEC_PATH,
+ BINDIR,
+ 0
+ };
+ const char **s;
+
+ for (s = strip; *s; s++) {
+ const char *sargv = argv0_path + strlen(argv0_path);
+ const char *ss = *s + strlen(*s);
+ while (argv0_path < sargv && *s < ss
+ && (*sargv == *ss ||
+ (is_dir_sep(*sargv) && is_dir_sep(*ss)))) {
+ sargv--;
+ ss--;
+ }
+ if (*s == ss) {
+ struct strbuf d = STRBUF_INIT;
+ /* We also skip the trailing directory separator. */
+ assert(sargv - argv0_path - 1 >= 0);
+ strbuf_add(&d, argv0_path, sargv - argv0_path - 1);
+ prefix = strbuf_detach(&d, NULL);
+ break;
+ }
+ }
}
+
+ if (!prefix) {
+ prefix = PREFIX;
+ fprintf(stderr, "RUNTIME_PREFIX requested, "
+ "but prefix computation failed. "
+ "Using static fallback '%s'.\n", prefix);
+ }
+#endif
+
+ strbuf_addf(&d, "%s/%s", prefix, path);
+ path = strbuf_detach(&d, NULL);
return path;
}
-void git_set_argv0_path(const char *path)
+const char *git_extract_argv0_path(const char *argv0)
{
- argv0_path = path;
+ const char *slash;
+
+ if (!argv0 || !*argv0)
+ return NULL;
+ slash = argv0 + strlen(argv0);
+
+ while (argv0 <= slash && !is_dir_sep(*slash))
+ slash--;
+
+ if (slash >= argv0) {
+ argv0_path = xstrndup(argv0, slash - argv0);
+ return slash + 1;
+ }
+
+ return argv0;
}
void git_set_argv_exec_path(const char *exec_path)
const char *old_path = getenv("PATH");
struct strbuf new_path = STRBUF_INIT;
- add_path(&new_path, argv_exec_path);
- add_path(&new_path, getenv(EXEC_PATH_ENVIRONMENT));
- add_path(&new_path, system_path(GIT_EXEC_PATH));
+ add_path(&new_path, git_exec_path());
add_path(&new_path, argv0_path);
if (old_path)