From: Junio C Hamano <gitster@pobox.com>
Date: Thu, 2 Apr 2009 19:02:25 +0000 (-0700)
Subject: Merge branch 'js/maint-1.6.0-exec-path-env' into maint
X-Git-Tag: v1.6.2.2~3
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/1e7ef0253c91bf2f25f9d8e44795b642737e664e?ds=inline;hp=-c

Merge branch 'js/maint-1.6.0-exec-path-env' into maint

* js/maint-1.6.0-exec-path-env:
Propagate --exec-path setting to external commands via GIT_EXEC_PATH
---

1e7ef0253c91bf2f25f9d8e44795b642737e664e
diff --combined exec_cmd.c
index 217c12577f,589059f026..408e4e55e1
--- a/exec_cmd.c
+++ b/exec_cmd.c
@@@ -9,58 -9,26 +9,62 @@@ static const char *argv0_path
  
  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 &&
 +	    !(prefix = strip_path_suffix(argv0_path, GIT_EXEC_PATH)) &&
 +	    !(prefix = strip_path_suffix(argv0_path, BINDIR)) &&
 +	    !(prefix = strip_path_suffix(argv0_path, "git"))) {
 +		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)
  {
  	argv_exec_path = exec_path;
+ 	/*
+ 	 * Propagate this setting to external programs.
+ 	 */
+ 	setenv(EXEC_PATH_ENVIRONMENT, exec_path, 1);
  }
  
  
@@@ -95,9 -63,13 +99,9 @@@ static void add_path(struct strbuf *out
  void setup_path(void)
  {
  	const char *old_path = getenv("PATH");
 -	struct strbuf new_path;
 -
 -	strbuf_init(&new_path, 0);
 +	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)