opt-env.mk revision 1.3
11.3Srillig# $NetBSD: opt-env.mk,v 1.3 2022/01/23 16:09:38 rillig Exp $ 21.1Srillig# 31.2Srillig# Tests for the -e command line option. 41.1Srillig 51.3Srillig# The variable FROM_ENV is defined in ./Makefile. 61.1Srillig 71.3Srillig.MAKEFLAGS: -e 81.3Srillig 91.3Srillig.if ${FROM_ENV} != value-from-env 101.3Srillig. error ${FROM_ENV} 111.3Srillig.endif 121.3Srillig 131.3Srillig# Try to override the variable; this does not have any effect. 141.3SrilligFROM_ENV= value-from-mk 151.3Srillig.if ${FROM_ENV} != value-from-env 161.3Srillig. error ${FROM_ENV} 171.3Srillig.endif 181.3Srillig 191.3Srillig# Try to append to the variable; this also doesn't have any effect. 201.3SrilligFROM_ENV+= appended 211.3Srillig.if ${FROM_ENV} != value-from-env 221.3Srillig. error ${FROM_ENV} 231.3Srillig.endif 241.3Srillig 251.3Srillig# The default assignment also cannot change the variable. 261.3SrilligFROM_ENV?= default 271.3Srillig.if ${FROM_ENV} != value-from-env 281.3Srillig. error ${FROM_ENV} 291.3Srillig.endif 301.3Srillig 311.3Srillig# Neither can the assignment modifiers. 321.3Srillig.if ${FROM_ENV::=from-condition} 331.3Srillig.endif 341.3Srillig.if ${FROM_ENV} != value-from-env 351.3Srillig. error ${FROM_ENV} 361.3Srillig.endif 371.3Srillig 381.3Srillig# Even .undef doesn't work since it only affects the global scope, 391.3Srillig# which is independent from the environment variables. 401.3Srillig.undef FROM_ENV 411.3Srillig.if ${FROM_ENV} != value-from-env 421.3Srillig. error ${FROM_ENV} 431.3Srillig.endif 441.3Srillig 451.3Srilligall: .PHONY 46