1*6a7405f5SSimon J. Gerraty# $NetBSD: cond-func-commands.mk,v 1.6 2025/01/10 23:00:38 rillig Exp $ 22c3632d1SSimon J. Gerraty# 32c3632d1SSimon J. Gerraty# Tests for the commands() function in .if conditions. 42c3632d1SSimon J. Gerraty 52c3632d1SSimon J. Gerraty.MAIN: all 62c3632d1SSimon J. Gerraty 7e2eeea75SSimon J. Gerraty# At this point, the target 'target' does not exist yet, therefore it cannot 8e2eeea75SSimon J. Gerraty# have commands. Sounds obvious, but good to know that it is really so. 92c3632d1SSimon J. Gerraty.if commands(target) 102c3632d1SSimon J. Gerraty. error 112c3632d1SSimon J. Gerraty.endif 122c3632d1SSimon J. Gerraty 132c3632d1SSimon J. Gerratytarget: 142c3632d1SSimon J. Gerraty 152c3632d1SSimon J. Gerraty# Now the target exists, but it still has no commands. 162c3632d1SSimon J. Gerraty.if commands(target) 172c3632d1SSimon J. Gerraty. error 182c3632d1SSimon J. Gerraty.endif 192c3632d1SSimon J. Gerraty 202c3632d1SSimon J. Gerratytarget: 212c3632d1SSimon J. Gerraty # not a command 222c3632d1SSimon J. Gerraty 232c3632d1SSimon J. Gerraty# Even after the comment, the target still has no commands. 242c3632d1SSimon J. Gerraty.if commands(target) 252c3632d1SSimon J. Gerraty. error 262c3632d1SSimon J. Gerraty.endif 272c3632d1SSimon J. Gerraty 282c3632d1SSimon J. Gerratytarget: 292c3632d1SSimon J. Gerraty @:; 302c3632d1SSimon J. Gerraty 312c3632d1SSimon J. Gerraty# Finally the target has commands. 322c3632d1SSimon J. Gerraty.if !commands(target) 332c3632d1SSimon J. Gerraty. error 342c3632d1SSimon J. Gerraty.endif 352c3632d1SSimon J. Gerraty 36*6a7405f5SSimon J. Gerraty# Expressions in the argument of a function call don't have to be defined. 37*6a7405f5SSimon J. Gerraty.if commands(${UNDEF}) 38*6a7405f5SSimon J. Gerraty. error 39*6a7405f5SSimon J. Gerraty.endif 40*6a7405f5SSimon J. Gerraty 412c3632d1SSimon J. Gerratyall: 422c3632d1SSimon J. Gerraty @:; 43