+AC_MSG_CHECKING(for CoreAudio (MacOs))
+AC_TRY_LINK([
+ #include <CoreAudio/CoreAudio.h>
+],[
+ AudioDeviceID id;
+],[have_core_audio=yes],[have_core_audio=no])
+AC_MSG_RESULT($have_core_audio)
+if test ${have_core_audio} = yes; then
+ f1="-framework CoreAudio"
+ f2="-framework AudioToolbox"
+ f3="-framework AudioUnit"
+ f4="-framework CoreServices"
+ f="$f1 $f2 $f3 $f4"
+
+ all_errlist_objs="$all_errlist_objs osx_write"
+ audiod_errlist_objs="$audiod_errlist_objs osx_write"
+ audiod_cmdline_objs="$audiod_cmdline_objs osx_write.cmdline"
+ audiod_ldflags="$audiod_ldflags $f"
+
+ write_errlist_objs="$write_errlist_objs osx_write"
+ write_cmdline_objs="$write_cmdline_objs osx_write.cmdline"
+ write_ldflags="$write_ldflags $f"
+ writers="$writers osx"
+ default_writer="OSX_WRITE"
+ AC_DEFINE(HAVE_CORE_AUDIO, 1, define to 1 on Mac Os X)
+fi
+########################################################################### gtk2
+build_para_krell="yes"
+OLD_CPPFLAGS="$CPPFLAGS"
+OLD_LD_FLAGS="$LDFLAGS"
+OLD_LIBS="$LIBS"
+pkg_modules="gtk+-2.0 >= 2.0.0"
+PKG_CHECK_MODULES(GLIB, [glib-2.0 >= 2.0.4], [], [build_para_krell="no"])
+PKG_CHECK_MODULES(GTK, [$pkg_modules], [], [build_para_krell="no"])
+CPPFLAGS="$GTK_CFLAGS $GLIB_CFLAGS"
+LDFLAGS="$LDFLAGS $GTK_LIBS"
+AC_CHECK_HEADER(gkrellm2/gkrellm.h, [], [build_para_krell="no"])
+if test "$build_para_krell" = "yes"; then
+ AC_SUBST(GTK_CFLAGS)
+ AC_SUBST(GTK_LIBS)
+ extras="$extras para_krell.so"
+else
+ AC_MSG_WARN([can not build para_krell])
+fi
+CPPFLAGS="$OLD_CPPFLAGS"
+LDFLAGS="$OLD_LDFLAGS"
+LIBS="$OLD_LIBS"