CVS commit: src/usr.bin/make

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

Module Name:    src
Committed By:   rillig
Date:           Sun Apr 11 18:44:58 UTC 2021

Modified Files:
        src/usr.bin/make: str.h var.c

Log Message:
make: migrate ModifyWord functions to use Substring

This benefits the modifiers ':T' and ':H' since these scan the word from
the end.  The SysV modifier '.c=.o' does not benefit yet, this will be
done in a follow-up commit.

Currently ModifyWords calls strlen for each single word, which degrades
performance.  This will be cleaned up in a follow-up commit as well.

No functional change.


To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/usr.bin/make/str.h
cvs rdiff -u -r1.918 -r1.919 src/usr.bin/make/var.c

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