50 lines
1.3 KiB
Makefile
50 lines
1.3 KiB
Makefile
# $NetBSD: find-prefix.mk,v 1.7 2008/02/10 10:30:58 rillig Exp $
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#
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# This is a "subroutine" that can be included to find the installation
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# prefix of an installed package.
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#
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# Parameters:
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#
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# FIND_PREFIX
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# A list of <VARNAME>=<pattern> pairs, where
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#
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# * <pattern> is a package wildcard pattern (see pkg_info(8)),
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# * <VARNAME> is the variable that will be set to the
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# installation prefix for the package.
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#
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# Returns:
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#
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# <VARNAME>
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# The prefix of the corresponding package, or ${LOCALBASE}
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# if the package is not installed.
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#
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# Example:
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#
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# FIND_PREFIX:= M4DIR=gm4
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# .include "../../mk/find-prefix.mk"
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# # ${M4DIR} now contains the installation prefix for the "gm4" package.
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#
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.for i in ${FIND_PREFIX}
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. for varname in ${i:C/=.*$//}
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. for pattern in ${i:C/^[^=]*=//}
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. if !defined(${varname})
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# XXX: Is this *_DEFAULT variable really necessary? The default value
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# can be easily embedded in the shell code. What if VARNAME is set to
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# PKG_APACHE, for example?
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#
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${varname}_DEFAULT?= ${LOCALBASE}
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_${varname}_cmd= \
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${PKG_INFO} -qp ${pattern:Q} 2>/dev/null | \
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{ read cmd arg; \
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case "$$arg" in \
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"") ${ECHO} ${${varname}_DEFAULT:Q} ;; \
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*) ${ECHO} "$$arg" ;; \
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esac; }
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${varname}= ${_${varname}_cmd:sh}
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. endif
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MAKEVARS+= ${varname}
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. endfor
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. endfor
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.endfor
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