This is a multi-part message in MIME format.
--------------000601050503050508080502
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit

Hi all,

I tried to port pkgsrc to HP-UX some days ago. One thing I really didn't 
like about it was creating the file mk/platform/HP-UX.mk. So I wrote the 
attached file, which is meant to be included at the end of a mk/platform 
file. I could shorten the NetBSD.mk file by about 50 lines.

I already discussed the framework with wiz, and these are some results 
of it:

Pros:
* only the "non-standard" tools need to be mentioned
   in the ${OPSYS}.mk file.
* new tools (like diff(1), cvs(1)) can be added without
   touching {NUMBER_OF_PLATFORM} different files.
* There's a definite, single list for the list of platform tools
   (lines 26..46)
* Each tool has a ${TOOL_FLAGS} variable, which makes the tools
   consistent. To fully exploit this, the ${TOOL_FLAGS} must be used by
   the rest of the pkgsrc infrastructure, but it is already done
   partly.

Cons:
* heavier file system usage (about 120 x stat(2))

Notes:
* I could not measure any timing differences between the old and the
   new version, so perhaps the Con argument is bogus.

Roland

--------------000601050503050508080502
Content-Type: text/plain;
 name="platform.default.mk"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
 filename="platform.default.mk"

# $NetBSD$
#
# Default tool definitions for all operating systems.
#
# For each program _t_ in ${_PLATFORM_TOOLS}, a variable named ${_t_:tu}
# (the uppercase name) is defined to the first program that is found in
# ${_PLATFORM_EXECDIRS}, and a variable ${_t_:tu}_FLAGS is defined to the
# empty string.
#
# For some of the tool names, there already exist environment variables
# of the same name (for example GZIP). Therefore these tools are defined
# using the variable ${_t_:tu}_CMD.
#
# Examples:
#     After inclusion of this file, the variable MKDIR points to a
#     mkdir(1) tool, and MKDIR_FLAGS is empty, unless it had been
#     defined before. Similarly, GZIP_CMD points to a gzip(1) tool,
#     and GZIP_FLAGS is also empty, unless it had been defined before.
#

.if !defined(_MK_PLATFORM_DEFAULT_MK)
_MK_PLATFORM_DEFAULT_MK=	# defined

_PLATFORM_EXECDIRS?=	/bin /usr/bin /sbin /usr/sbin

_PLATFORM_TOOLS+=	awk
_PLATFORM_TOOLS+=	basename
_PLATFORM_TOOLS+=	cat chmod chown chgrp cmp cp cpp cut
_PLATFORM_TOOLS+=	date dirname
_PLATFORM_TOOLS+=	echo echo_n egrep env expr
_PLATFORM_TOOLS+=	false fgrep find
_PLATFORM_TOOLS+=	gmake grep groupadd gtar gzcat
_PLATFORM_TOOLS+=	head
_PLATFORM_TOOLS+=	id
_PLATFORM_TOOLS+=	ldconfig ln ls
_PLATFORM_TOOLS+=	m4 mkdir mtree mv
_PLATFORM_TOOLS+=	nice
_PLATFORM_TOOLS+=	patch pax perl5 ps
_PLATFORM_TOOLS+=	rm rmdir rsh
_PLATFORM_TOOLS+=	sed sh shlock sort su
_PLATFORM_TOOLS+=	tail tar tee test touch tr true tsort type
_PLATFORM_TOOLS+=	useradd
_PLATFORM_TOOLS+=	wc
_PLATFORM_TOOLS+=	xargs

_PLATFORM_CMD_TOOLS+=	file gunzip gzip hostname mail pwd

#
# Define TOOL and TOOL_FLAGS for most tools.
# If the tool cannot be found, fall back to the tool name without a path.
#
.for _t_ in ${_PLATFORM_TOOLS}
.  for _d_ in ${_PLATFORM_EXECDIRS}
.    if exists(${_d_}/${_t_})
${_t_:tu}?=		${_d_}/${_t_}
${_t_:tu}_FLAGS?=	# empty
.    endif
.  endfor
${_t_:tu}?=		${_t_}
.endfor

#
# Define TOOL_CMD and TOOL_FLAGS for some other tools.
# If the tool cannot be found, fall back to the tool name without a path.
#
.for _t_ in ${_PLATFORM_CMD_TOOLS}
.  for _d_ in ${_PLATFORM_EXECDIRS}
.    if exists(${_d_}/${_t_})
${_t_:tu}_CMD?=		${_d_}/${_t_}
${_t_:tu}_FLAGS?=	# empty
.    endif
.  endfor
${_t_:tu}_CMD?=		${_t_}
.endfor

.endif

--------------000601050503050508080502--