cmdline.mk revision 1.4
1# $NetBSD: cmdline.mk,v 1.4 2022/06/10 18:58:07 rillig Exp $ 2# 3# Tests for command line parsing and related special variables. 4 5TMPBASE?= ${TMPDIR:U/tmp/uid${.MAKE.UID}} 6SUB1= a7b41170-53f8-4cc2-bc5c-e4c3dd93ec45 # just a random UUID 7SUB2= 6a8899d2-d227-4b55-9b6b-f3c8eeb83fd5 # just a random UUID 8MAKE_CMD= env TMPBASE=${TMPBASE}/${SUB1} ${.MAKE} -f ${MAKEFILE} -r 9DIR2= ${TMPBASE}/${SUB2} 10DIR12= ${TMPBASE}/${SUB1}/${SUB2} 11 12all: prepare-dirs 13all: makeobjdir-direct makeobjdir-indirect 14all: space-and-comment 15 16prepare-dirs: 17 @rm -rf ${DIR2} ${DIR12} 18 @mkdir -p ${DIR2} ${DIR12} 19 20# The .OBJDIR can be set via the MAKEOBJDIR command line variable. 21# It must be a command line variable; an environment variable would not work. 22makeobjdir-direct: 23 @echo $@: 24 @${MAKE_CMD} MAKEOBJDIR=${DIR2} show-objdir 25 26# The .OBJDIR can be set via the MAKEOBJDIR command line variable, 27# and that variable could even contain the usual modifiers. 28# Since the .OBJDIR=MAKEOBJDIR assignment happens very early, 29# the SUB2 variable in the modifier is not defined yet and is therefore empty. 30# The SUB1 in the resulting path comes from the environment variable TMPBASE, 31# see MAKE_CMD. 32makeobjdir-indirect: 33 @echo $@: 34 @${MAKE_CMD} MAKEOBJDIR='$${TMPBASE}/$${SUB2}' show-objdir 35 36show-objdir: 37 @echo $@: ${.OBJDIR:Q} 38 39 40# Variable assignments in the command line are handled differently from 41# variable assignments in makefiles. In the command line, trailing whitespace 42# is preserved, and the '#' does not start a comment. This is because the 43# low-level parsing from ParseRawLine does not take place. 44# 45# Preserving '#' and trailing whitespace has the benefit that when passing 46# such values to sub-makes via MAKEFLAGS, no special encoding is needed. 47# Leading whitespace in the variable value is discarded though, which makes 48# the behavior inconsistent. 49space-and-comment: .PHONY 50 @echo $@: 51 52 @env -i \ 53 ${MAKE} -r -f /dev/null ' VAR= value # no comment ' -v VAR \ 54 | sed 's,$$,$$,' 55 56 @env -i MAKEFLAGS="' VAR= value # no comment '" \ 57 ${MAKE} -r -f /dev/null -v VAR \ 58 | sed 's,$$,$$,' 59