+ AC_MSG_CHECKING([for struct ast_party_caller in asterisk/channel.h])
+ apc_test_result=no
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM(
+ [[#include <asterisk.h>],
+ [#include <asterisk/channel.h>]],
+ [[struct ast_party_caller * caller = NULL; (void) caller->id;]])],
+ [apc_test_result=yes])
+ AC_MSG_RESULT([$apc_test_result])
+
+ if test "x$apc_test_result" = "xyes"; then
+ ast_1_8_or_higher="-DAST_1_8_OR_HIGHER"
+ fi
+
+ AST_CFLAGS="-Dtone_zone_sound=$ast_tone_zone_sound $ast_1_8_or_higher"
+