Module Name:	pkgsrc
Committed By:	jlam
Date:		Sun Apr 24 03:07:37 UTC 2005

Modified Files:
	pkgsrc/mk/tools: replace.mk

Log Message:
Rewrite code for using system-supplied tools so that we can replace
tools that are defined as a command plus arguments, e.g. for gunzip,

	GUNZIP=	/usr/bin/gzip -d

In this case, we generate a wrapper script that invokes the real
command plus arguments.  If there are no arguments, then just symlink
the command for simplicity.

Also, restructure the tool-specific blocks so that we always define
TOOLS_CMD.<tool> to the correct name (important for yacc/bison), and
check that the real command actually exists before assigning it to
the "TOOL" name.


To generate a diff of this commit:
cvs rdiff -r1.6 -r1.7 pkgsrc/mk/tools/replace.mk

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