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# $NetBSD: pthread.buildlink3.mk,v 1.21 2005/11/04 14:36:23 rillig Exp $
#
# The pthreads strategy for pkgsrc is to "bless" a particular pthread
# package as the Official Pthread Replacement (OPR). The following
# variables may be set before including this file:
#
# PTHREAD_OPTS?= # empty
# A list of options to configure the search for a suitable pthreads
# implementation.
#
# "native" means that only a native pthreads implementation is
# acceptable.
#
# "optional" will override the effects of any instance of
# "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 is only www/mozilla, which uses its own
# threading library if native pthreads are unavailable,
# despite that it uses GTK+, which _does_ need pthreads.
#
# "require" means that the package is skipped silently when no
# implementation can be found.
#
# By default, the native pthreads implementation is used if it's
# available. Otherwise the OPR is used.
#
# PTHREAD_AUTO_VARS?= no
# This variable specifies whether the values of the variables
# PTHREAD_{CFLAGS,CPPFLAGS,LDFLAGS,LIBS} should be automatically
# added to their respective variables.
#
# After inclusion of this file, the following variables may be examined:
#
# PTHREAD_TYPE
# The type of pthreads implementation that has been found.
#
# "native" means that the native pthreads implementation is used.
#
# "none" means that no suitable pthreads implementation could be
# found.
#
# Any other value is the name of the package that is used as the
# pthread implementation.
#
# Note that it's only safe to check and use the value of PTHREAD_TYPE
# after all other buildlink3.mk files have been included.
#
# The case where a package must use either the native pthread library or
# some pthread package aside from the OPR (e.g. "ptl2") can be solved as
# follows:
#
# 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"
PTHREAD_BUILDLINK3_MK:= ${PTHREAD_BUILDLINK3_MK}+
# The fall-back package pthread implementation
_PKG_PTHREAD?= pth
_PKG_PTHREAD_DEPENDS?= pth>=2.0.0
_PKG_PTHREAD_PKGSRCDIR?= ../../devel/${_PKG_PTHREAD}
_PKG_PTHREAD_BUILDLINK3_MK?= ${_PKG_PTHREAD_PKGSRCDIR}/buildlink3.mk
# _PKG_PTHREAD_COMPAT_PATTERNS matches the ONLY_FOR_PLATFORMS from the
# Makefile for ${_PKG_PTHREAD}. It is used to see if ${_PKG_PTHREADS}
# can actually be used to replace a native pthreads.
_PKG_PTHREAD_COMPAT_PATTERNS= *-*-*
.include "../../mk/bsd.prefs.mk"
PTHREAD_OPTS?= # empty
#
# We check for a native pthreads implementation by checking for the presence
# of /usr/include/pthread.h (we might want to make this check stricter).
#
.undef PTHREAD_TYPE
.if exists(/usr/include/pthread.h) && \
!empty(PREFER_NATIVE_PTHREADS:M[yY][eE][sS])
PTHREAD_TYPE= native
.else
. if !empty(PTHREAD_OPTS:Mnative)
PTHREAD_TYPE= none
. if !empty(PTHREAD_OPTS:Mrequire) && empty(PTHREAD_OPTS:Moptional)
PKG_SKIP_REASON= "${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
PTHREAD_AUTO_VARS?= no
.if ${PTHREAD_TYPE} == "native"
BUILDLINK_PACKAGES:= ${BUILDLINK_PACKAGES:Npthread}
BUILDLINK_PACKAGES+= pthread
BUILDLINK_BUILTIN_MK.pthread= ../../mk/pthread.builtin.mk
BUILDLINK_AUTO_VARS.pthread?= ${PTHREAD_AUTO_VARS}
.elif ${PTHREAD_TYPE} == "${_PKG_PTHREAD}"
. if exists(${_PKG_PTHREAD_BUILDLINK3_MK})
. if !empty(_PKG_PTHREAD_DEPENDS)
BUILDLINK_DEPENDS.${_PKG_PTHREAD}+= ${_PKG_PTHREAD_DEPENDS}
. endif
. include "${_PKG_PTHREAD_BUILDLINK3_MK}"
BUILDLINK_PREFIX.pthread= ${BUILDLINK_PREFIX.${_PKG_PTHREAD}}
BUILDLINK_CFLAGS.pthread= ${BUILDLINK_CFLAGS.${_PKG_PTHREAD}}
BUILDLINK_CPPFLAGS.${_PKG_PTHREAD}?= -D_REENTRANT
BUILDLINK_CPPFLAGS.pthread= ${BUILDLINK_CPPFLAGS.${_PKG_PTHREAD}}
BUILDLINK_LDFLAGS.pthread= ${BUILDLINK_LDFLAGS.${_PKG_PTHREAD}}
BUILDLINK_LIBS.${_PKG_PTHREAD}?= -lpthread
BUILDLINK_LIBS.pthread= ${BUILDLINK_LIBS.${_PKG_PTHREAD}}
BUILDLINK_AUTO_VARS.${_PKG_PTHREAD}?= ${PTHREAD_AUTO_VARS}
BUILDLINK_AUTO_VARS.pthread= ${BUILDLINK_AUTO_VARS.${_PKG_PTHREAD}}
. else
PKG_SKIP_REASON= ${PKGNAME:Q}" needs pthreads, but "${_PKG_PTHREAD_BUILDLINK3_MK:Q}" is missing."
. endif
.endif
.if !empty(PTHREAD_BUILDLINK3_MK:M+)
#
# Define user-visible PTHREAD_{CFLAGS,LDFLAGS,LIBS} as compiler options
# used to compile/link pthreaded code.
#
PTHREAD_CFLAGS= ${BUILDLINK_CFLAGS.pthread}
PTHREAD_CFLAGS+= ${BUILDLINK_CPPFLAGS.pthread}
PTHREAD_LDFLAGS= ${BUILDLINK_LDFLAGS.pthread}
PTHREAD_LIBS= ${BUILDLINK_LIBS.pthread}
CONFIGURE_ENV+= PTHREAD_CFLAGS=${PTHREAD_CFLAGS:Q}
CONFIGURE_ENV+= PTHREAD_LDFLAGS=${PTHREAD_LDFLAGS:Q}
CONFIGURE_ENV+= PTHREAD_LIBS=${PTHREAD_LIBS:Q}
MAKE_ENV+= PTHREAD_CFLAGS=${PTHREAD_CFLAGS:Q}
MAKE_ENV+= PTHREAD_LDFLAGS=${PTHREAD_LDFLAGS:Q}
MAKE_ENV+= PTHREAD_LIBS=${PTHREAD_LIBS:Q}
PTHREADBASE= ${BUILDLINK_PREFIX.pthread}
CONFIGURE_ENV+= PTHREADBASE=${PTHREADBASE:Q}
MAKE_ENV+= PTHREADBASE=${PTHREADBASE:Q}
.endif # PTHREAD_BUILDLINK3_MK
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