+########################################################################### curses
+have_ncurses="yes"
+OLD_CPPFLAGS="$CPPFLAGS"
+OLD_LD_FLAGS="$LDFLAGS"
+OLD_LIBS="$LIBS"
+AC_ARG_WITH(ncurses_headers, [AC_HELP_STRING(--with-ncurses-headers=dir,
+ [look for ncurses.h also in dir])])
+if test -n "$with_ncurses_headers"; then
+ ncurses_cppflags="-I$with_ncurses_headers"
+ CPPFLAGS="$CPPFLAGS $ncurses_cppflags"
+fi
+AC_ARG_WITH(ncurses_libs, [AC_HELP_STRING(--with-ncurses-libs=dir,
+ [look for libncurses also in dir])])
+if test -n "$with_ncurses_libs"; then
+ ncurses_libs="-L$with_ncurses_libs"
+ LDFLAGS="$LDFLAGS $ncurses_libs"
+fi
+AC_CHECK_HEADER(curses.h, [], [
+ have_ncurses="no"
+])
+AC_CHECK_LIB([ncurses], [initscr], [], [
+ have_ncurses="no"
+])
+if test "$have_ncurses" = "yes"; then
+ AC_SUBST(ncurses_cppflags)
+ AC_SUBST(ncurses_libs)
+ AC_DEFINE(HAVE_NCURSES, 1, [define to 1 to turn on ncurses support])
+ extras="$extras para_gui"
+ all_executables="$all_executables gui"
+else
+ AC_MSG_WARN([cannot build para_gui])
+fi
+CPPFLAGS="$OLD_CPPFLAGS"
+LDFLAGS="$OLD_LDFLAGS"
+LIBS="$OLD_LIBS"
+########################################################################### osx
+
+AC_MSG_CHECKING(for CoreAudio (MacOs))
+AC_TRY_LINK([
+ #include <CoreAudio/CoreAudio.h>
+],[
+ AudioDeviceID id;
+],[have_core_audio=yes],[have_core_audio=no])
+AC_MSG_RESULT($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