bin/make/unit-tests/varmisc.mk

   1 # $Id: varmisc.mk,v 1.9 2017/02/01 18:44:54 sjg Exp $
   2 #
   3 # Miscellaneous variable tests.
   4
   5 all: unmatched_var_paren D_true U_true D_false U_false Q_lhs Q_rhs NQ_none \
   6         strftime cmpv
   7
   8 unmatched_var_paren:
   9         @echo ${foo::=foo-text}
  10
  11 True = ${echo true >&2:L:sh}TRUE
  12 False= ${echo false >&2:L:sh}FALSE
  13
  14 VSET= is set
  15 .undef UNDEF
  16
  17 U_false:
  18         @echo :U skipped when var set
  19         @echo ${VSET:U${False}}
  20
  21 D_false:
  22         @echo :D skipped if var undef
  23         @echo ${UNDEF:D${False}}
  24
  25 U_true:
  26         @echo :U expanded when var undef
  27         @echo ${UNDEF:U${True}}
  28
  29 D_true:
  30         @echo :D expanded when var set
  31         @echo ${VSET:D${True}}
  32
  33 Q_lhs:
  34         @echo :? only lhs when value true
  35         @echo ${1:L:?${True}:${False}}
  36
  37 Q_rhs:
  38         @echo :? only rhs when value false
  39         @echo ${0:L:?${True}:${False}}
  40
  41 NQ_none:
  42         @echo do not evaluate or expand :? if discarding
  43         @echo ${VSET:U${1:L:?${True}:${False}}}
  44
  45 April1= 1459494000
  46
  47 # slightly contorted syntax to use utc via variable
  48 strftime:
  49         @echo ${year=%Y month=%m day=%d:L:gmtime=1459494000}
  50         @echo date=${%Y%m%d:L:${gmtime=${April1}:L}}
  51
  52 # big jumps to handle 3 digits per step
  53 M_cmpv.units = 1 1000 1000000
  54 M_cmpv = S,., ,g:_:range:@i@+ $${_:[-$$i]} \* $${M_cmpv.units:[$$i]}@:S,^,expr 0 ,1:sh
  55
  56 Version = 123.456.789
  57 cmpv.only = target specific vars
  58
  59 cmpv:
  60         @echo Version=${Version} == ${Version:${M_cmpv}}
  61         @echo Literal=3.4.5 == ${3.4.5:L:${M_cmpv}}
  62         @echo We have ${${.TARGET:T}.only}