framework.m4

   1 # AC_CHECK_FRAMEWORK(FRAMEWORK, PROLOGUE, BODY,
   2 #              [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
   3 #              [OTHER-LIBRARIES])
   4 # ------------------------------------------------------
   5 #
   6 # Use a cache variable name containing both the framework and function name,
   7 # because the test really is for framework $1 defining function $2, not
   8 # just for framework $1.  Separate tests with the same $1 and different $2s
   9 # may have different results.
  10 #
  11 # Note that using directly AS_VAR_PUSHDEF([ac_Framework], [ac_cv_framework_$1])
  12 # is asking for troubles, since AC_CHECK_FRAMEWORK($framework, fun) would give
  13 # ac_cv_framework_$framework_fun, which is definitely not what was meant.  Hence
  14 # the AS_LITERAL_IF indirection.
  15 #
  16 # FIXME: This macro is extremely suspicious.  It DEFINEs unconditionally,
  17 # whatever the FUNCTION, in addition to not being a *S macro.  Note
  18 # that the cache does depend upon the function we are looking for.
  19 #
  20 # It is on purpose we used `ac_check_framework_save_LIBS' and not just
  21 # `ac_save_LIBS': there are many macros which don't want to see `LIBS'
  22 # changed but still want to use AC_CHECK_FRAMEWORK, so they save `LIBS'.
  23 # And ``ac_save_LIBS' is too tempting a name, so let's leave them some
  24 # freedom.
  25 AC_DEFUN([AC_CHECK_FRAMEWORK], [
  26         m4_ifval([$4], , [AH_CHECK_FRAMEWORK([$1])])dnl
  27         AS_LITERAL_IF([$1], [AS_VAR_PUSHDEF([ac_Framework], [ac_cv_framework_$1])],
  28                 [AS_VAR_PUSHDEF([ac_Framework], [ac_cv_framework_$1''])]
  29         )dnl
  30         AC_CACHE_CHECK([for framework $1], ac_Framework, [
  31                 ac_check_framework_save_LIBS=$LIBS
  32                 LIBS="-framework $1 $6 $LIBS"
  33                 AC_LINK_IFELSE([AC_LANG_PROGRAM([$2], [$3])],[
  34                         AS_VAR_SET(ac_Framework, yes)
  35                 ], [AS_VAR_SET(ac_Framework, no)])
  36                 LIBS=$ac_check_framework_save_LIBS]
  37         )
  38         AS_IF([test AS_VAR_GET(ac_Framework) = yes], [
  39                 AC_LIB_APPENDTOVAR([LIBS], ["-framework $1 $LIBS"])
  40                 m4_default([$4], [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_FRAMEWORK_$1))])
  41         ], [$5])dnl
  42         AS_VAR_POPDEF([ac_Framework])dnl
  43 ])# AC_CHECK_FRAMEWORK
  44
  45 # AH_CHECK_FRAMEWORK(FRAMEWORK)
  46 # ---------------------
  47 m4_define([AH_CHECK_FRAMEWORK], [
  48         AH_TEMPLATE(AS_TR_CPP(HAVE_FRAMEWORK_$1),
  49         [Define to 1 if you have the `]$1[' framework (-framework ]$1[).]
  50 )])