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Fix problem reported by Donn Cave: if VPATH is an absolute path, it 

would always be a hit.   Prevent this by only using VPATH if we know
we are in the build directory.
This commit is contained in:
Guido van Rossum 1997-05-12 20:49:39 +00:00
parent 4a807f5939
commit 573a24a4f7
1 changed files with 25 additions and 18 deletions
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43
Modules/getpath.c
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@ -209,25 +209,30 @@ search_for_prefix(argv0_path, home)
int i, n;
char *vpath;
/* Check VPATH to see if argv0_path is in the build directory.
* Complication: the VPATH passed in is relative to the
* Modules build directory and points to the Modules source
* directory; we need it relative to the build tree and
* pointing to the source tree. Solution: chop off a leading
* ".." (but only if it's there -- it could be an absolute
* path) and chop off the final component (assuming it's
* "Modules").
*/
vpath = VPATH;
if (vpath[0] == '.' && vpath[1] == '.' && vpath[2] == '/')
vpath += 3;
/* Check to see if argv[0] is in the build directory */
strcpy(prefix, argv0_path);
join(prefix, vpath);
reduce(prefix);
join(prefix, "Lib");
join(prefix, LANDMARK);
if (exists(prefix))
return -1;
join(prefix, "Modules/Setup");
if (exists(prefix)) {
/* Check VPATH to see if argv0_path is in the build directory.
* Complication: the VPATH passed in is relative to the
* Modules build directory and points to the Modules source
* directory; we need it relative to the build tree and
* pointing to the source tree. Solution: chop off a leading
* ".." (but only if it's there -- it could be an absolute
* path) and chop off the final component (assuming it's
* "Modules").
*/
vpath = VPATH;
if (vpath[0] == '.' && vpath[1] == '.' && vpath[2] == '/')
vpath += 3;
strcpy(prefix, argv0_path);
join(prefix, vpath);
reduce(prefix);
join(prefix, "Lib");
join(prefix, LANDMARK);
if (exists(prefix))
return -1;
}
if (home) {
/* Check $PYTHONHOME */
@ -474,6 +479,8 @@ calculate_path()
strcpy(buf, rtpypath);
strcat(buf, delimiter);
}
else
buf[0] = '\0';
/* Next goes merge of compile-time $PYTHONPATH with
* dynamically located prefix.