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Diffstat (limited to 'contrib/bmake/unit-tests/directive-ifmake.mk')
| -rw-r--r-- | contrib/bmake/unit-tests/directive-ifmake.mk | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/contrib/bmake/unit-tests/directive-ifmake.mk b/contrib/bmake/unit-tests/directive-ifmake.mk new file mode 100644 index 000000000000..4d49add72626 --- /dev/null +++ b/contrib/bmake/unit-tests/directive-ifmake.mk @@ -0,0 +1,82 @@ +# $NetBSD: directive-ifmake.mk,v 1.8 2020/11/15 20:20:58 rillig Exp $ +# +# Tests for the .ifmake directive, which provides a shortcut for asking +# whether a certain target is requested to be made from the command line. +# +# TODO: Describe why the shortcut may be useful (if it's useful at all), +# instead of sticking to the simple '.if' only. + +# The targets 'first' and 'second' are passed in on the command line. + +# This is the most basic form. +.ifmake first +. info ok: positive condition works +.else +. warning positive condition fails +.endif + +# The not operator works as expected. +# An alternative interpretation were that this condition is asking whether +# the target "!first" was requested. To distinguish this, see the next test. +.ifmake !first +. warning unexpected +.else +. info ok: negation works +.endif + +# See if the exclamation mark really means "not", or if it is just part of +# the target name. Since it means 'not', the two exclamation marks are +# effectively ignored, and 'first' is indeed a requested target. If the +# exclamation mark were part of the name instead, the name would be '!!first', +# and such a target was not requested to be made. +.ifmake !!first +. info ok: double negation works +.else +. warning double negation fails +.endif + +# Multiple targets can be combined using the && and || operators. +.ifmake first && second +. info ok: both mentioned +.else +. warning && does not work as expected +.endif + +# Negation also works in complex conditions. +.ifmake first && !unmentioned +. info ok: only those mentioned +.else +. warning && with ! does not work as expected +.endif + +# Using the .MAKEFLAGS special dependency target, arbitrary command +# line options can be added at parse time. This means that it is +# possible to extend the targets to be made. +.MAKEFLAGS: late-target +.ifmake late-target +. info Targets can even be added at parse time. +.else +. info No, targets cannot be added at parse time anymore. +.endif + +# Numbers are interpreted as numbers, no matter whether the directive is +# a plain .if or an .ifmake. +.ifmake 0 +. error +.endif +.ifmake 1 +.else +. error +.endif + +# A condition that consists of a variable expression only (without any +# comparison operator) can be used with .if and the other .ifxxx directives. +.ifmake ${:Ufirst} +. info ok +.else +. error +.endif + + +first second unmentioned late-target: + : $@ |