1# 2# $FreeBSD$ 3# 4# Generic mechanism to deal with WITH and WITHOUT options and turn 5# them into MK_ options. 6# 7# For each option FOO in __DEFAULT_YES_OPTIONS, MK_FOO is set to 8# "yes", unless WITHOUT_FOO is defined, in which case it is set to 9# "no". 10# 11# For each option FOO in __REQUIRED_OPTIONS, MK_FOO is set to "yes". 12# 13# For each option FOO in __DEFAULT_NO_OPTIONS, MK_FOO is set to "no", 14# unless WITH_FOO is defined, in which case it is set to "yes". 15# 16# For each entry FOO/BAR in __DEFAULT_DEPENDENT_OPTIONS, 17# MK_FOO is set to "no" if WITHOUT_FOO is defined, 18# "yes" if WITH_FOO is defined, otherwise the value of MK_BAR. 19# 20# If both WITH_FOO and WITHOUT_FOO are defined, WITHOUT_FOO wins and 21# MK_FOO is set to "no" regardless of which list it was in. 22# 23# All of __DEFAULT_YES_OPTIONS, __DEFAULT_NO_OPTIONS and 24# __DEFAULT_DEPENDENT_OPTIONS are undef'd after all this processing, 25# allowing this file to be included multiple times with different lists. 26# 27# Other parts of the build system will set BROKEN_OPTIONS to a list 28# of options that are broken on this platform. This will not be unset 29# before returning. Clients are expected to always += this variable. 30# 31# Users should generally define WITH_FOO or WITHOUT_FOO, but the build 32# system should use MK_FOO={yes,no} when it needs to override the 33# user's desires or default behavior. 34# 35 36# 37# MK_* options which default to "yes". 38# 39.for var in ${__DEFAULT_YES_OPTIONS} 40.if !defined(MK_${var}) 41.if defined(WITH_${var}) && ${WITH_${var}} == "no" 42.warning Use WITHOUT_${var}=1 instead of WITH_${var}=no 43.endif 44.if defined(WITHOUT_${var}) # WITHOUT always wins 45MK_${var}:= no 46.else 47MK_${var}:= yes 48.endif 49.else 50.if ${MK_${var}} != "yes" && ${MK_${var}} != "no" 51.error Illegal value for MK_${var}: ${MK_${var}} 52.endif 53.endif # !defined(MK_${var}) 54.endfor 55.undef __DEFAULT_YES_OPTIONS 56 57# 58# MK_* options which are always yes, typically as a transitional 59# step towards removing the options entirely. 60# 61.for var in ${__REQUIRED_OPTIONS} 62MK_${var}:= yes 63.endfor 64 65# 66# MK_* options which default to "no". 67# 68.for var in ${__DEFAULT_NO_OPTIONS} 69.if !defined(MK_${var}) 70.if defined(WITH_${var}) && ${WITH_${var}} == "no" 71.warning Use WITHOUT_${var}=1 instead of WITH_${var}=no 72.endif 73.if defined(WITH_${var}) && !defined(WITHOUT_${var}) # WITHOUT always wins 74MK_${var}:= yes 75.else 76MK_${var}:= no 77.endif 78.else 79.if ${MK_${var}} != "yes" && ${MK_${var}} != "no" 80.error Illegal value for MK_${var}: ${MK_${var}} 81.endif 82.endif # !defined(MK_${var}) 83.endfor 84.undef __DEFAULT_NO_OPTIONS 85 86# 87# MK_* options which are always no, usually because they are 88# unsupported/badly broken on this architecture. 89# 90.for var in ${BROKEN_OPTIONS} 91MK_${var}:= no 92.endfor 93 94.for vv in ${__DEFAULT_DEPENDENT_OPTIONS} 95.if defined(WITH_${vv:H}) && defined(WITHOUT_${vv:H}) 96MK_${vv:H}?= no 97.elif defined(WITH_${vv:H}) 98MK_${vv:H}?= yes 99.elif defined(WITHOUT_${vv:H}) 100MK_${vv:H}?= no 101.else 102MK_${vv:H}?= ${MK_${vv:T}} 103.endif 104MK_${vv:H}:= ${MK_${vv:H}} 105.endfor 106.undef __DEFAULT_DEPENDENT_OPTIONS 107