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97 lines
2.7 KiB
Makefile
97 lines
2.7 KiB
Makefile
#
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# $FreeBSD$
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#
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# Generic mechanism to deal with WITH and WITHOUT options and turn
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# them into MK_ options.
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#
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# For each option FOO in __DEFAULT_YES_OPTIONS, MK_FOO is set to
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# "yes", unless WITHOUT_FOO is defined, in which case it is set to
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# "no".
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#
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# For each option FOO in __DEFAULT_NO_OPTIONS, MK_FOO is set to "no",
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# unless WITH_FOO is defined, in which case it is set to "yes".
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#
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# For each entry FOO/BAR in __DEFAULT_DEPENDENT_OPTIONS,
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# MK_FOO is set to "no" if WITHOUT_FOO is defined,
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# "yes" if WITH_FOO is defined, otherwise the value of MK_BAR.
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#
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# If both WITH_FOO and WITHOUT_FOO are defined, WITHOUT_FOO wins and
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# MK_FOO is set to "no" regardless of which list it was in.
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#
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# All of __DEFAULT_YES_OPTIONS, __DEFAULT_NO_OPTIONS and
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# __DEFAULT_DEPENDENT_OPTIONS are undef'd after all this processing,
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# allowing this file to be included multiple times with different lists.
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#
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# Other parts of the build system will set BROKEN_OPTIONS to a list
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# of options that are broken on this platform. This will not be unset
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# before returning. Clients are expected to always += this variable.
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#
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# Users should generally define WITH_FOO or WITHOUT_FOO, but the build
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# system should use MK_FOO={yes,no} when it needs to override the
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# user's desires or default behavior.
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#
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#
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# MK_* options which default to "yes".
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#
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.for var in ${__DEFAULT_YES_OPTIONS}
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.if !defined(MK_${var})
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.if defined(WITH_${var}) && ${WITH_${var}} == "no"
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.warning "Use WITHOUT_${var}=1 instead of WITH_${var}=no"
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.endif
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.if defined(WITHOUT_${var}) # WITHOUT always wins
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MK_${var}:= no
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.else
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MK_${var}:= yes
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.endif
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.else
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.if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
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.error "Illegal value for MK_${var}: ${MK_${var}}"
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.endif
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.endif # !defined(MK_${var})
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.endfor
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.undef __DEFAULT_YES_OPTIONS
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#
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# MK_* options which default to "no".
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#
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.for var in ${__DEFAULT_NO_OPTIONS}
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.if !defined(MK_${var})
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.if defined(WITH_${var}) && ${WITH_${var}} == "no"
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.warning "Use WITHOUT_${var}=1 instead of WITH_${var}=no"
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.endif
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.if defined(WITH_${var}) && !defined(WITHOUT_${var}) # WITHOUT always wins
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MK_${var}:= yes
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.else
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MK_${var}:= no
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.endif
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.else
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.if ${MK_${var}} != "yes" && ${MK_${var}} != "no"
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.error "Illegal value for MK_${var}: ${MK_${var}}"
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.endif
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.endif # !defined(MK_${var})
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.endfor
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.undef __DEFAULT_NO_OPTIONS
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#
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# MK_* options which are always no, usually because they are
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# unsupported/badly broken on this architecture.
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#
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.for var in ${BROKEN_OPTIONS}
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MK_${var}:= no
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.endfor
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.for vv in ${__DEFAULT_DEPENDENT_OPTIONS}
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.if defined(WITH_${vv:H}) && defined(WITHOUT_${vv:H})
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MK_${vv:H}?= no
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.elif defined(WITH_${vv:H})
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MK_${vv:H}?= yes
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.elif defined(WITHOUT_${vv:H})
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MK_${vv:H}?= no
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.else
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MK_${vv:H}?= ${MK_${vv:T}}
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.endif
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MK_${vv:H}:= ${MK_${vv:H}}
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.endfor
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.undef __DEFAULT_DEPENDENT_OPTIONS
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