mk/dlopen.builtin.mk

   1 # $NetBSD: dlopen.builtin.mk,v 1.23 2010/07/04 16:25:13 obache 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                                 /boot/develop/headers/posix/dlfcn.h
  10
  11 .include "../../mk/buildlink3/bsd.builtin.mk"
  12
  13 ###
  14 ### Determine if there is a built-in implementation of the package and
  15 ### set IS_BUILTIN.<pkg> appropriately ("yes" or "no").
  16 ###
  17 .if !defined(IS_BUILTIN.dl)
  18 IS_BUILTIN.dl=  no
  19 .  if empty(H_DL:M${LOCALBASE}/*) && exists(${H_DL})
  20 IS_BUILTIN.dl=  yes
  21 .  endif
  22 .endif
  23 MAKEVARS+=      IS_BUILTIN.dl
  24
  25 ###
  26 ### Determine whether we should use the built-in implementation if it
  27 ### exists, and set USE_BUILTIN.<pkg> appropriate ("yes" or "no").
  28 ###
  29 #
  30 # We ignore the value of PREFER_PKGSRC and PREFER_NATIVE because for
  31 # every platform except for Darwin-[56].*, we can only use the built-in
  32 # dynamic linker functions, so USE_BUILTIN.dl must match IS_BUILTIN.dl.
  33 #
  34 .if !defined(USE_BUILTIN.dl)
  35 USE_BUILTIN.dl=         ${IS_BUILTIN.dl}
  36 .  if !empty(MACHINE_PLATFORM:MDarwin-[56].*)
  37 USE_BUILTIN.dl=         no      # Darwin-[56].* uses devel/dlcompat
  38 .  endif
  39 .endif
  40 MAKEVARS+=      USE_BUILTIN.dl
  41
  42 # The following platforms require pthreads to be linked into the
  43 # application if it uses dlopen() or else the applications will core
  44 # dump when they dlopen a shared module that _is_ linked with pthread
  45 # support.
  46 # It is not required for NetBSD>=5 if just linked with pthread or using
  47 # pthread_mutex_*(), but need if using pthread_create() / pthread_join().
  48 #
  49 _BLNK_DLOPEN_REQUIRE_PTHREAD_PLATFORMS=                                 \
  50         NetBSD-2.[0-9]_*-*                                              \
  51         NetBSD-2.[0-9]-* NetBSD-2.[0-9].[0-9]*-*                        \
  52         NetBSD-2.[0-8][0-9]*-* NetBSD-2.9[0-8]*-*                       \
  53         NetBSD-2.99.[0-9]-* NetBSD-2.99.10-*                            \
  54         NetBSD-[3-9]*-*                                                 \
  55         NetBSD-[1-9][0-9]*-*                                            \
  56         OpenBSD-*-*
  57
  58 .if !defined(_BLNK_DLOPEN_REQUIRE_PTHREADS)
  59 _BLNK_DLOPEN_REQUIRE_PTHREADS?= no
  60 .  for _pattern_ in ${_BLNK_DLOPEN_REQUIRE_PTHREAD_PLATFORMS}
  61 .    if !empty(MACHINE_PLATFORM:M${_pattern_})
  62 .      if !empty(PREFER_NATIVE_PTHREADS:M[yY][eE][sS])
  63 _BLNK_DLOPEN_REQUIRE_PTHREADS=  yes
  64 .      endif
  65 .    endif
  66 .  endfor
  67 .endif
  68 MAKEVARS+=      _BLNK_DLOPEN_REQUIRE_PTHREADS
  69 #
  70 # DLOPEN_REQUIRE_PTHREADS is a user- and package-settable yes/no variable
  71 #       whose value decides whether pthread.buildlink3.mk is automatically
  72 #       included or not.  Its default value depends on whether native
  73 #       pthreads exist.
  74 #
  75 .if defined(DLOPEN_REQUIRE_PTHREADS)
  76 _BLNK_DLOPEN_REQUIRE_PTHREADS:= ${DLOPEN_REQUIRE_PTHREADS}
  77 .else
  78 DLOPEN_REQUIRE_PTHREADS=        ${_BLNK_DLOPEN_REQUIRE_PTHREADS}
  79 .endif
  80
  81 ###
  82 ### The section below only applies if we are not including this file
  83 ### solely to determine whether a built-in implementation exists.
  84 ###
  85 CHECK_BUILTIN.dl?=      no
  86 .if !empty(CHECK_BUILTIN.dl:M[nN][oO])
  87
  88 .  if !empty(USE_BUILTIN.dl:M[yY][eE][sS])
  89 .    if empty(H_DL:M__nonexistent__) && !empty(H_DL:M/usr/*)
  90 BUILDLINK_PREFIX.dl=    /usr
  91 .    endif
  92 .    if !empty(BUILTIN_LIB_FOUND.dl:M[yY][eE][sS])
  93 #
  94 # No need to add this to BUILDLINK_LIBS.dl since most GNU configure
  95 # scripts already check for -ldl themselves.
  96 #
  97 BUILDLINK_LDADD.dl=     -ldl
  98 .    endif
  99 .    if !empty(_BLNK_DLOPEN_REQUIRE_PTHREADS:M[yY][eE][sS])
 100 .      include "../../mk/pthread.buildlink3.mk"
 101 .      include "../../mk/pthread.builtin.mk"
 102 BUILDLINK_CFLAGS.dl+=   ${PTHREAD_CFLAGS}
 103 BUILDLINK_LDFLAGS.dl+=  ${PTHREAD_LDFLAGS}
 104 BUILDLINK_LIBS.dl+=     ${PTHREAD_LIBS}
 105 .    endif
 106 .  endif
 107
 108 .endif  # CHECK_BUILTIN.dl