m4/apple-target.m4

   1 # Usage:
   2 # AC_MONO_APPLE_TARGET(target-name, action-if-found, action-if-not-found)
   3 #
   4 # Checks whether `target-name` is defined in "TargetConditionals.h"
   5 #
   6 AC_DEFUN([AC_MONO_APPLE_TARGET], [
   7         AC_MONO_APPLE_AVAILABLE([$1], [for $1], [$1 == 1], $2, $3)
   8 ])
   9
  10
  11 # Usage:
  12 # AC_MONO_APPLE_AVAILABLE(name, message, conditional, action-if-found, action-if-not-found)
  13 #
  14 # Checks for `conditional` using "TargetConditionals.h" and "AvailabilityMacros.h"
  15 #
  16 AC_DEFUN([AC_MONO_APPLE_AVAILABLE], [
  17         # cache the compilation check
  18         AC_CACHE_CHECK([$2], [ac_cv_apple_available_[]$1], [
  19                 AC_TRY_COMPILE([
  20                         #include "TargetConditionals.h"
  21                         #include "AvailabilityMacros.h"
  22                 ],[
  23                         #if !($3)
  24                         #error failed
  25                         #endif
  26                 ], [
  27                         ac_cv_apple_available_[]$1=yes
  28                 ], [
  29                         ac_cv_apple_available_[]$1=no
  30                 ])
  31         ])
  32         # keep the actions out of the cache check because they need to be always executed.
  33         if test x$ac_cv_apple_available_[]$1 = xyes; then
  34                 $1=yes
  35                 [$4]
  36         else
  37                 $1=no
  38                 [$5]
  39         fi
  40 ])