CVS commit: src/usr.bin/make

["Roland Illig" <rillig%netbsd.org@localhost>]

Module Name:    src
Committed By:   rillig
Date:           Sat Nov 14 23:03:09 UTC 2020

Modified Files:
        src/usr.bin/make: main.c
        src/usr.bin/make/unit-tests: varmod-to-abs.exp varmod-to-abs.mk

Log Message:
make(1): switch cache for realpath from GNode to HashTable

An unintended side effect from the GNode implementation was that the
variable modifier :tA and the other places where cached_realpath are
used could be affected by setting a variable in the global scope,
thereby "redirecting" absolute paths to completely unrelated but
existing paths.

Another unintended side effect was that filenames containing a dollar
sign would not be resolved correctly since the dollar sign would be
expanded as a variable expression by Var_Set.

While here, the debugging output for the realpath cache has been
adjusted to the standard behavior.  Previously, when a new entry was
added to the cache, this was logged for the module VAR, as a side effect
of calling Var_Set, but only if the preprocessor macro
DEBUG_REALPATH_CACHE was defined at compilation time.  When relative
paths were purged from the cache because the current directory changed
and logging for the DIR module was active, the log output went directly
to stderr instead of the usual opts.debug_file.  This deviation from the
standard behavior was probably not intended as well.

All logging concerning the realpath cache now goes into the standard
debug log file and is controlled by the -dd option, not -dv.


To generate a diff of this commit:
cvs rdiff -u -r1.468 -r1.469 src/usr.bin/make/main.c
cvs rdiff -u -r1.2 -r1.3 src/usr.bin/make/unit-tests/varmod-to-abs.exp
cvs rdiff -u -r1.3 -r1.4 src/usr.bin/make/unit-tests/varmod-to-abs.mk

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.