mk/dlopen.builtin.mk

   1 # $NetBSD: dlopen.builtin.mk,v 1.22 2010/06/17 18:09:40 drochner Exp $
   2
   3 BUILTIN_PKG:=   dl
   4
   5 BUILTIN_FIND_LIBS:=             dl
   6 BUILTIN_FIND_FILES_VAR:=        H_DL
   7 BUILTIN_FIND_FILES.H_DL=        /usr/include/dlfcn.h                    \
   8                                 /opt/gcc.3.3/include/dlfcn.h
   9
  10 .include "../../mk/buildlink3/bsd.builtin.mk"
  11
  12 ###
  13 ### Determine if there is a built-in implementation of the package and
  14 ### set IS_BUILTIN.<pkg> appropriately ("yes" or "no").
  15 ###
  16 .if !defined(IS_BUILTIN.dl)
  17 IS_BUILTIN.dl=  no
  18 .  if empty(H_DL:M${LOCALBASE}/*) && exists(${H_DL})
  19 IS_BUILTIN.dl=  yes
  20 .  endif
  21 .endif
  22 MAKEVARS+=      IS_BUILTIN.dl
  23
  24 ###
  25 ### Determine whether we should use the built-in implementation if it
  26 ### exists, and set USE_BUILTIN.<pkg> appropriate ("yes" or "no").
  27 ###
  28 #
  29 # We ignore the value of PREFER_PKGSRC and PREFER_NATIVE because for
  30 # every platform except for Darwin-[56].*, we can only use the built-in
  31 # dynamic linker functions, so USE_BUILTIN.dl must match IS_BUILTIN.dl.
  32 #
  33 .if !defined(USE_BUILTIN.dl)
  34 USE_BUILTIN.dl=         ${IS_BUILTIN.dl}
  35 .  if !empty(MACHINE_PLATFORM:MDarwin-[56].*)
  36 USE_BUILTIN.dl=         no      # Darwin-[56].* uses devel/dlcompat
  37 .  endif
  38 .endif
  39 MAKEVARS+=      USE_BUILTIN.dl
  40
  41 # The following platforms require pthreads to be linked into the
  42 # application if it uses dlopen() or else the applications will core
  43 # dump when they dlopen a shared module that _is_ linked with pthread
  44 # support.
  45 # It is not required for NetBSD>=5 if just linked with pthread or using
  46 # pthread_mutex_*(), but need if using pthread_create() / pthread_join().
  47 #
  48 _BLNK_DLOPEN_REQUIRE_PTHREAD_PLATFORMS=                                 \
  49         NetBSD-2.[0-9]_*-*                                              \
  50         NetBSD-2.[0-9]-* NetBSD-2.[0-9].[0-9]*-*                        \
  51         NetBSD-2.[0-8][0-9]*-* NetBSD-2.9[0-8]*-*                       \
  52         NetBSD-2.99.[0-9]-* NetBSD-2.99.10-*                            \
  53         NetBSD-[3-9]*-*                                                 \
  54         NetBSD-[1-9][0-9]*-*
  55
  56 .if !defined(_BLNK_DLOPEN_REQUIRE_PTHREADS)
  57 _BLNK_DLOPEN_REQUIRE_PTHREADS?= no
  58 .  for _pattern_ in ${_BLNK_DLOPEN_REQUIRE_PTHREAD_PLATFORMS}
  59 .    if !empty(MACHINE_PLATFORM:M${_pattern_})
  60 .      if !empty(PREFER_NATIVE_PTHREADS:M[yY][eE][sS])
  61 _BLNK_DLOPEN_REQUIRE_PTHREADS=  yes
  62 .      endif
  63 .    endif
  64 .  endfor
  65 .endif
  66 MAKEVARS+=      _BLNK_DLOPEN_REQUIRE_PTHREADS
  67 #
  68 # DLOPEN_REQUIRE_PTHREADS is a user- and package-settable yes/no variable
  69 #       whose value decides whether pthread.buildlink3.mk is automatically
  70 #       included or not.  Its default value depends on whether native
  71 #       pthreads exist.
  72 #
  73 .if defined(DLOPEN_REQUIRE_PTHREADS)
  74 _BLNK_DLOPEN_REQUIRE_PTHREADS:= ${DLOPEN_REQUIRE_PTHREADS}
  75 .else
  76 DLOPEN_REQUIRE_PTHREADS=        ${_BLNK_DLOPEN_REQUIRE_PTHREADS}
  77 .endif
  78
  79 ###
  80 ### The section below only applies if we are not including this file
  81 ### solely to determine whether a built-in implementation exists.
  82 ###
  83 CHECK_BUILTIN.dl?=      no
  84 .if !empty(CHECK_BUILTIN.dl:M[nN][oO])
  85
  86 .  if !empty(USE_BUILTIN.dl:M[yY][eE][sS])
  87 BUILDLINK_PREFIX.dl=    /usr
  88 .    if !empty(BUILTIN_LIB_FOUND.dl:M[yY][eE][sS])
  89 #
  90 # No need to add this to BUILDLINK_LIBS.dl since most GNU configure
  91 # scripts already check for -ldl themselves.
  92 #
  93 BUILDLINK_LDADD.dl=     -ldl
  94 .    endif
  95 .    if !empty(_BLNK_DLOPEN_REQUIRE_PTHREADS:M[yY][eE][sS])
  96 .      include "../../mk/pthread.buildlink3.mk"
  97 .      include "../../mk/pthread.builtin.mk"
  98 BUILDLINK_CFLAGS.dl+=   ${PTHREAD_CFLAGS}
  99 BUILDLINK_LDFLAGS.dl+=  ${PTHREAD_LDFLAGS}
 100 BUILDLINK_LIBS.dl+=     ${PTHREAD_LIBS}
 101 .    endif
 102 .  endif
 103
 104 .endif  # CHECK_BUILTIN.dl