From 0d6c711ce586532632e1ae1b985d86085faa4580 Mon Sep 17 00:00:00 2001
From: jlam <jlam>
Date: Sat, 3 Jan 2004 23:06:43 +0000
Subject: Initial sprinkling of work-in-progress buildlink3.mk files for using
 the buildlink3 framework.

---
 mk/pthread.buildlink3.mk | 188 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 188 insertions(+)
 create mode 100644 mk/pthread.buildlink3.mk

(limited to 'mk/pthread.buildlink3.mk')

diff --git a/mk/pthread.buildlink3.mk b/mk/pthread.buildlink3.mk
new file mode 100644
index 00000000000..73324e81c0b
--- /dev/null
+++ b/mk/pthread.buildlink3.mk
@@ -0,0 +1,188 @@
+# $NetBSD: pthread.buildlink3.mk,v 1.1 2004/01/03 23:06:44 jlam Exp $
+#
+# The pthreads strategy for pkgsrc is to "bless" a particular pthread
+# package as the Official Pthread Replacement (OPR).  A package that uses
+# pthreads may do one of the following:
+#
+#   (1) Simply include pthread.buildlink3.mk.  This will make the package
+#	use the native pthread library if it's available, or else the OPR
+#	package.  The value of PTHREAD_TYPE may be checked to be either
+#	"native", or the name of the OPR package, or "none", e.g.
+#
+#	#
+#	# package Makefile stuff...
+#	#
+#	.include "../../mk/pthread.buildlink3.mk"
+#
+#	.if defined(PTHREAD_TYPE) && ${PTHREAD_TYPE} == "none"
+#	CONFIGURE_ARGS+=	--without-pthreads
+#	.endif
+#
+#	.include "../../mk/bsd.pkg.mk"
+#
+#	Note that it's only safe to check and use the value of PTHREAD_TYPE
+#	after all other buildlink3.mk files have been included.
+#
+#   (2) Add "native" to PTHREAD_OPTS prior to including
+#	pthread.buildlink3.mk.  This is like case (1), but we only check for
+#	the native pthread library, e.g.,
+#
+#	PTHREAD_OPTS+=	native
+#	#
+#	# package Makefile stuff...
+#	#
+#	.include "../../mk/pthread.buildlink3.mk"
+#
+#	.if defined(PTHREAD_TYPE) && ${PTHREAD_TYPE} == "none"
+#	CONFIGURE_ARGS+=	--without-pthreads
+#	.endif
+#
+#	.include "../../mk/bsd.pkg.mk"
+#
+#   (3)	Add "require" to PTHREAD_OPTS prior to including
+#	pthread.buildlink3.mk.  This will make the package use the native
+#	pthread library or else use the OPR package, and will otherwise set
+#	PKG_SKIP_REASON if neither can be used, e.g.,
+#
+#	PTHREAD_OPTS+=	require
+#	#
+#	# package Makefile stuff...
+#	#
+#	.include "../../mk/pthread.buildlink3.mk"
+#	.include "../../mk/bsd.pkg.mk"
+#
+#   (4) Add both "require" and "native" to PTHREAD_OPTS prior to including
+#	pthread.buildlink3.mk.  This is like case (3), but we only check for
+#	the native pthread library, e.g.,
+#
+#	PTHREAD_OPTS+=	require native
+#	#
+#	# more package Makefile stuff...
+#	#
+#	.include "../../mk/pthread.buildlink3.mk"
+#	.include "../../mk/bsd.pkg.mk"
+#
+# The case where a package must use either the native pthread library or
+# some pthread package aside from the OPR is a special case of (2), e.g.,
+# if the required pthread package is "ptl2", then:
+#
+#	PTHREAD_OPTS+=	native
+#	#
+#	# more package Makefile stuff...
+#	#
+#	.include "../../mk/pthread.buildlink3.mk"
+#
+#	.if defined(PTHREAD_TYPE) && ${PTHREAD_TYPE} == "none"
+#	.  include "../../devel/ptl2/buildlink3.mk"
+#	.endif
+#
+#	.include "../../mk/bsd.pkg.mk"
+#
+# A package Makefile may add the word "optional" to PTHREAD_OPTS, which
+# will override the effects of any instance of the word "require".  This
+# should _only_ be used by those packages that can be built with or
+# without pthreads _independently_ of whether any of its dependencies need
+# pthreads.  Currently, this only only www/mozilla, which uses its own
+# threading library if native pthreads is unavailable, despite that it
+# uses GTK+, which _does_ need pthreads.
+#
+###########################################################################
+#
+# PTHREAD_OPTS represents whether this package requires pthreads, and also
+#	whether it needs to be native.  It may include the word "require"
+#	to denote that a pthreads implementation is required, and may also
+#	include the word "native" to denote that only native pthreads are
+#	acceptable.
+#
+# _PKG_PTHREAD is the fall-back package pthread implementation use by
+#	pthread.buildlink3.mk.
+#
+# _PKG_PTHREAD_COMPAT_PATTERNS matches the ONLY_FOR_PLATFORMS from the
+#	Makefile for ${_PKG_PTHREAD}.  It's used to see if ${_PKG_PTHREADS}
+#	can actually be used to replace a native pthreads.
+#
+_PKG_PTHREAD?=			pth
+_PKG_PTHREAD_DEPENDS?=		pth>=2.0.0
+_PKG_PTHREAD_PKGSRCDIR?=	../../devel/${_PKG_PTHREAD}
+_PKG_PTHREAD_BUILDLINK3_MK?=	${_PKG_PTHREAD_PKGSRCDIR}/buildlink3.mk
+_PKG_PTHREAD_COMPAT_PATTERNS=	*-*-*
+
+.include "../../mk/bsd.prefs.mk"
+
+PTHREAD_OPTS?=	# empty
+#
+# We check for a native pthreads implementation by checking for the presence
+# of /usr/include/pthread.h (we might want to make this check stricter).
+#
+.undef PTHREAD_TYPE
+PREFER_NATIVE_PTHREADS?=	YES
+.if exists(/usr/include/pthread.h) && ${PREFER_NATIVE_PTHREADS} == "YES"
+PTHREAD_TYPE=	native
+.else
+.  if !empty(PTHREAD_OPTS:Mnative)
+PTHREAD_TYPE=	none
+.    if !empty(PTHREAD_OPTS:Mrequire) && empty(PTHREAD_OPTS:Moptional)
+PKG_SKIP_REASON= "${PKGNAME} requires a native pthreads implementation."
+.    endif
+.  else
+PTHREAD_TYPE=	none
+.    for _pattern_ in ${_PKG_PTHREAD_COMPAT_PATTERNS}
+.      if !empty(MACHINE_PLATFORM:M${_pattern_})
+PTHREAD_TYPE=	${_PKG_PTHREAD}
+.      endif
+.    endfor
+.    if ${PTHREAD_TYPE} == "none" && \
+	!empty(PTHREAD_OPTS:Mrequire) && empty(PTHREAD_OPTS:Moptional)
+PKG_SKIP_REASON= "${PKGNAME} requires a working pthreads implementation."
+.    endif
+.  endif
+.endif
+
+.if !defined(PTHREAD_BUILDLINK3_MK)
+PTHREAD_BUILDLINK3_MK=	# defined
+
+.if ${PTHREAD_TYPE} == "native"
+#
+# Link the native pthread libraries and headers into ${BUILDLINK_DIR}.
+#
+BUILDLINK_PREFIX.pthread=	/usr
+BUILDLINK_CFLAGS.pthread=	-pthread
+BUILDLINK_LDFLAGS.pthread=	# empty
+#
+# Handle systems which have pthreads functions in libc_r such as
+# FreeBSD 5.x, or fall back to libc if we don't find libc_r.
+#
+.  if exists(/usr/lib/libpthread.so) || exists(/lib/libpthread.so)
+BUILDLINK_LDADD.pthread=	-lpthread
+.  elif exists(/usr/lib/libc_r.so)
+BUILDLINK_LDADD.pthread=	-lc_r
+.  else
+BUILDLINK_LDADD.pthread=	# empty
+.  endif
+
+.elif ${PTHREAD_TYPE} == "${_PKG_PTHREAD}"
+.  if exists(${_PKG_PTHREAD_BUILDLINK3_MK})
+.    if !empty(_PKG_PTHREAD_DEPENDS)
+BUILDLINK_DEPENDS.${_PKG_PTHREAD}=	${_PKG_PTHREAD_DEPENDS}
+.    endif
+BUILDLINK_PREFIX.pthread=	${BUILDLINK_PREFIX.${_PKG_PTHREAD}}
+BUILDLINK_CFLAGS.pthread=	${BUILDLINK_CFLAGS.${_PKG_PTHREAD}}
+BUILDLINK_LDFLAGS.pthread=	${BUILDLINK_LDFLAGS.${_PKG_PTHREAD}}
+BUILDLINK_LDADD.pthread=	-lpthread
+.    include "${_PKG_PTHREAD_BUILDLINK3_MK}"
+.  else
+PKG_SKIP_REASON= "${PKGNAME} needs pthreads, but ${_PKG_PTHREAD_BUILDLINK3_MK} is missing."
+.  endif
+.endif
+
+# Define user-visible PTHREAD_CFLAGS and PTHREAD_LDFLAGS as compiler
+# options used to compile/link pthreaded code.
+#
+PTHREAD_CFLAGS=		${BUILDLINK_CFLAGS.pthread}
+PTHREAD_LDFLAGS=	${BUILDLINK_LDFLAGS.pthread} ${BUILDLINK_LDADD.pthread}
+
+PTHREADBASE=		${BUILDLINK_PREFIX.pthread}
+CONFIGURE_ENV+=		PTHREADBASE=${PTHREADBASE}
+MAKE_ENV+=		PTHREADBASE=${PTHREADBASE}
+
+.endif	# PTHREAD_BUILDLINK3_MK
-- 
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