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# $NetBSD: dlopen.builtin.mk,v 1.11 2005/06/01 18:03:06 jlam Exp $

BUILTIN_PKG:=	dl

BUILTIN_FIND_LIBS:=		dl
BUILTIN_FIND_FILES_VAR:=	H_DL
BUILTIN_FIND_FILES.H_DL=	/usr/include/dlfcn.h			\
				/opt/gcc.3.3/include/dlfcn.h

.include "../../mk/buildlink3/bsd.builtin.mk"

###
### Determine if there is a built-in implementation of the package and
### set IS_BUILTIN.<pkg> appropriately ("yes" or "no").
###
.if !defined(IS_BUILTIN.dl)
IS_BUILTIN.dl=	no
.  if empty(H_DL:M${LOCALBASE}/*) && exists(${H_DL})
IS_BUILTIN.dl=	yes
.  endif
.endif
MAKEVARS+=	IS_BUILTIN.dl

###
### Determine whether we should use the built-in implementation if it
### exists, and set USE_BUILTIN.<pkg> appropriate ("yes" or "no").
###
.if !defined(USE_BUILTIN.dl)
.  if ${PREFER.dl} == "pkgsrc"
USE_BUILTIN.dl=	no
.  else
USE_BUILTIN.dl=	${IS_BUILTIN.dl}
.    if defined(BUILTIN_PKG.dl) && \
        !empty(IS_BUILTIN.dl:M[yY][eE][sS])
USE_BUILTIN.dl=	yes
.      for _dep_ in ${BUILDLINK_DEPENDS.dl}
.        if !empty(USE_BUILTIN.dl:M[yY][eE][sS])
USE_BUILTIN.dl!=							\
	if ${PKG_ADMIN} pmatch ${_dep_:Q} ${BUILTIN_PKG.dl:Q}; then	\
		${ECHO} yes;						\
	else								\
		${ECHO} no;						\
	fi
.        endif
.      endfor
.    endif
.    if ${OPSYS} == "Darwin"
USE_BUILTIN.dl=		no	# Darwin uses devel/dlcompat
.    endif
.  endif  # PREFER.dl
.endif
MAKEVARS+=	USE_BUILTIN.dl

# The following platforms require pthreads to be linked into the
# application if it uses dlopen() or else the applications will core
# dump when they dlopen a shared module that _is_ linked with pthread
# support.
#
_BLNK_DLOPEN_REQUIRE_PTHREAD_PLATFORMS=					\
	NetBSD-2.[0-9]_*-*						\
	NetBSD-2.[0-9]-* NetBSD-2.[0-9].[0-9]*-*			\
	NetBSD-2.[0-8][0-9]*-* NetBSD-2.9[0-8]*-*			\
	NetBSD-2.99.[0-9]-* NetBSD-2.99.10-*

.if !defined(_BLNK_DLOPEN_REQUIRE_PTHREADS)
_BLNK_DLOPEN_REQUIRE_PTHREADS?=	no
.  for _pattern_ in ${_BLNK_DLOPEN_REQUIRE_PTHREAD_PLATFORMS}
.    if !empty(MACHINE_PLATFORM:M${_pattern_})
.      if !empty(PREFER_NATIVE_PTHREADS:M[yY][eE][sS])
_BLNK_DLOPEN_REQUIRE_PTHREADS=	yes
.      endif
.    endif
.  endfor
.endif
MAKEVARS+=	_BLNK_DLOPEN_REQUIRE_PTHREADS
#
# DLOPEN_REQUIRE_PTHREADS is a user- and package-settable yes/no variable
#	whose value decides whether pthread.buildlink3.mk is automatically
#	included or not.  Its default value depends on whether native
#	pthreads exist.
#
.if defined(DLOPEN_REQUIRE_PTHREADS)
_BLNK_DLOPEN_REQUIRE_PTHREADS:=	${DLOPEN_REQUIRE_PTHREADS}
.else
DLOPEN_REQUIRE_PTHREADS=        ${_BLNK_DLOPEN_REQUIRE_PTHREADS}
.endif

###
### The section below only applies if we are not including this file
### solely to determine whether a built-in implementation exists.
###
CHECK_BUILTIN.dl?=	no
.if !empty(CHECK_BUILTIN.dl:M[nN][oO])

.  if !empty(USE_BUILTIN.dl:M[yY][eE][sS])
BUILDLINK_PREFIX.dl=	/usr
.    if !empty(BUILTIN_LIB_FOUND.dl:M[yY][eE][sS])
#
# No need to add this to BUILDLINK_LIBS.dl since most GNU configure
# scripts already check for -ldl themselves.
#
BUILDLINK_LDADD.dl=	-ldl
.    endif
.    if !empty(_BLNK_DLOPEN_REQUIRE_PTHREADS:M[yY][eE][sS])
BUILDLINK_DEPTH:=	${BUILDLINK_DEPTH}+
.      include "../../mk/pthread.buildlink3.mk"
BUILDLINK_DEPTH:=	${BUILDLINK_DEPTH:S/+$//}
.      include "../../mk/pthread.builtin.mk"
BUILDLINK_CFLAGS.dl+=	${PTHREAD_CFLAGS}
BUILDLINK_LDFLAGS.dl+=	${PTHREAD_LDFLAGS}
BUILDLINK_LIBS.dl+=	${PTHREAD_LIBS}
.    endif
.  endif

.endif	# CHECK_BUILTIN.dl