mirror of
git://git.sv.gnu.org/autoconf
synced 2025-02-17 14:01:27 +08:00
0eebfff3e0
As reported by Paul Keir on the cygwin lists, http://cygwin.com/ml/cygwin/2012-07/msg00263.html, some people like to stick / in their $PATH, and if we then try to probe $as_dir/progname for existence, we can end up causing cygwin to have a several-second timeout per //name probe. It is better to avoid inserting the extra slash when $as_dir is the root directory, and simpler to code by always having a trailing slash present than it is to strip a trailing slash. Thankfully, _AS_PATH_WALK is an undocumented interface, and even if someone was using it in spite of the warnings, their use of $as_dir/foo will typically only lead to odd-looking /dir//foo probes, with only the case of / in $PATH causing slowdowns, and only when // is special. There was also a minor bug where the if-not-found code of _AS_PATH_WALK could be executed with $IFS still in the wrong state. * lib/m4sugar/m4sh.m4 (_AS_PATH_WALK): Always end as_dir in /. Avoid wrong IFS during if-not-found. Minor optimization to avoid regex. (_AS_DETECT_BETTER_SHELL, _AS_SHELL_SANITIZE): Update clients. * lib/autotest/general.m4 (_AT_FINISH): Likewise. * lib/autoconf/programs.m4 (_AC_CHECK_PROG, _AC_PATH_PROG) (_AC_PATH_PROGS_FEATURE_CHECK, _AC_PATH_PROG_FLAVOR_GNU): Likewise. |
||
|---|---|---|
| .. | ||
| autotest.m4 | ||
| general.m4 | ||
| Makefile.am | ||
| specific.m4 | ||