diff options
Diffstat (limited to 'devel/bmake/files/mk/target-flags.mk')
| -rw-r--r-- | devel/bmake/files/mk/target-flags.mk | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/devel/bmake/files/mk/target-flags.mk b/devel/bmake/files/mk/target-flags.mk new file mode 100644 index 00000000000..8d1d26a0cb3 --- /dev/null +++ b/devel/bmake/files/mk/target-flags.mk @@ -0,0 +1,62 @@ +# NAME: +# target-flags.mk - target specific flags +# +# DESCRIPTION: +# Include this macro file after all others in a makefile and +# follow it with any target specific flag settings. +# For each such variable v in TARGET_FLAG_VARS we set: +#.nf +# +# _$v := ${$v} +# $v = ${${v}_${.TARGET:T}:U${_$v}} +#.fi +# +# This allows one to do things like: +#.nf +# +# TARGET_FLAG_VARS= CFLAGS +# .include <target-flags.mk> +# CFLAGS_fu.o = ${_CFLAGS:N-Wall} +#.fi +# +# To turn off -Wall for just the target fu.o +# Actually CFLAGS is the default value for TARGET_FLAG_VARS. +# +# BUGS: +# One must be careful to avoid creating circular references in +# variables. The original version of this macro file did +# elaborate things with CFLAGS. The current, simpler +# implementation is ultimately more flexible. +# +# It is important that target-flags.mk is included after other +# macro files and that target specific flags that may reference +# _$v are set after that. +# +# Only works with a make(1) that does nested evaluation correctly. + + + +# RCSid: +# $Id: target-flags.mk,v 1.1.1.1 2020/05/24 05:35:53 nia Exp $ +# +# @(#) Copyright (c) 1998-2002, Simon J. Gerraty +# +# This file is provided in the hope that it will +# be of use. There is absolutely NO WARRANTY. +# Permission to copy, redistribute or otherwise +# use this file is hereby granted provided that +# the above copyright notice and this notice are +# left intact. +# +# Please send copies of changes and bug-fixes to: +# sjg@crufty.net +# + +TARGET_FLAG_VARS?= CFLAGS +.for v in ${TARGET_FLAG_VARS} +.ifndef _$v +_$v := ${$v} +$v = ${${v}_${.TARGET:T}:U${_$v}} +.endif +.endfor + |