CVS commit: src/usr.bin/make

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

Module Name:    src
Committed By:   rillig
Date:           Sun Sep 13 07:42:20 UTC 2020

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

Log Message:
make(1): in lint mode, complain about erroneous $$

Since 2008-12-21, make has silently ignored strange variable names in
constructs like '$$', '$}', '$' followed by nothing.  Ignoring these
bugs in makefiles instead of reporting them is not a good idea.

To improve the situation, make complains about these errors now, but
only in lint mode (-dL).  This preserves existing behavior while still
allowing to validate existing makefiles that they don't depend on this
bug.

If the test phase goes well, these error messages may be enabled
unconditionally.

https://mail-index.netbsd.org/pkgsrc-users/2020/09/12/msg032229.html


To generate a diff of this commit:
cvs rdiff -u -r1.506 -r1.507 src/usr.bin/make/var.c
cvs rdiff -u -r1.1 -r1.2 src/usr.bin/make/unit-tests/varmod.exp
cvs rdiff -u -r1.2 -r1.3 src/usr.bin/make/unit-tests/varmod.mk

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