2d1ba244e9
This changes the buildlink3.mk files to use an include guard for the recursive include. The use of BUILDLINK_DEPTH, BUILDLINK_DEPENDS, BUILDLINK_PACKAGES and BUILDLINK_ORDER is handled by a single new variable BUILDLINK_TREE. Each buildlink3.mk file adds a pair of enter/exit marker, which can be used to reconstruct the tree and to determine first level includes. Avoiding := for large variables (BUILDLINK_ORDER) speeds up parse time as += has linear complexity. The include guard reduces system time by avoiding reading files over and over again. For complex packages this reduces both %user and %sys time to half of the former time.
64 lines
1.8 KiB
Makefile
64 lines
1.8 KiB
Makefile
# $NetBSD: resolv.buildlink3.mk,v 1.3 2009/03/20 19:25:01 joerg Exp $
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#
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# This Makefile fragment is included by package Makefiles and
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# buildlink3.mk files for the packages that need a thread-safe
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# DNS resolver.
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#
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# It defines the variables RESOLV_LDFLAGS and RESOLV_LIBS,
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# which are also exported into the CONFIGURE_ENV and MAKE_ENV environments.
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#
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# Package-settable variables:
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#
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# RESOLV_AUTO_VARS
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# When set to "yes", the necessary flags are added automatically
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# to LDFLAGS and friends.
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#
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# Default: no
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#
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# Keywords: resolv
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#
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RESOLV_BUILDLINK3_MK:= ${RESOLV_BUILDLINK3_MK}+
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.include "../../mk/bsd.fast.prefs.mk"
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RESOLV_AUTO_VARS?= no
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CHECK_BUILTIN.resolv= no
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.if ${OPSYS} == "DragonFly" || ${OPSYS} == "FreeBSD"
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USE_BUILTIN.resolv?= yes
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BUILDLINK_LDFLAGS.resolv= # empty, in libc
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.elif (${OPSYS} == "NetBSD" && empty(OS_VERSION:M[012].*)) || \
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(${OPSYS} == "Darwin" && empty(OS_VERSION:M[0123467].*))
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USE_BUILTIN.resolv?= yes
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# BIND 9 resolver
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BUILDLINK_LDFLAGS.resolv= -lresolv
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.else
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USE_BUILTIN.resolv?= no
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.endif
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.if !empty(USE_BUILTIN.resolv:M[yY][eE][sS])
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BUILDLINK_TREE+= resolv -resolv
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BUILDLINK_AUTO_VARS.resolv= ${RESOLV_AUTO_VARS}
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.else
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. include "../../net/bind9/buildlink3.mk"
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BUILDLINK_AUTO_VARS.bind= ${RESOLV_AUTO_VARS}
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BUILDLINK_LDFLAGS.resolv= ${BUILDLINK_LDFLAGS.bind}
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BUILDLINK_LIBS.resolv= ${BUILDLINK_LIBS.bind}
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.endif
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.if !empty(RESOLV_BUILDLINK3_MK:M+)
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#
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# Define user-visible RESOLV_{LDFLAGS,LIBS} as compiler options used
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# to link code that needs a thread-safe DNS resolver.
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#
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RESOLV_LDFLAGS= ${BUILDLINK_LDFLAGS.resolv}
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RESOLV_LIBS= ${BUILDLINK_LIBS.resolv}
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CONFIGURE_ENV+= RESOLV_LDFLAGS=${RESOLV_LDFLAGS:Q}
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CONFIGURE_ENV+= RESOLV_LIBS=${RESOLV_LIBS:Q}
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MAKE_ENV+= RESOLV_LDFLAGS=${RESOLV_LDFLAGS:Q}
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MAKE_ENV+= RESOLV_LIBS=${RESOLV_LIBS:Q}
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.endif # RESOLV_BUILDLINK3_MK
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