AC_CHECK_HEADERS(cthreads.h pthread.h kernel/scheduler.h kernel/OS.h)
fi # end "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"
-dnl Default X headers and libraries
-if test "${x_includes}" = "NONE"; then
- x_includes="/usr/X11R6/include"
-fi
-if test "${x_libraries}" = "NONE"; then
- x_libraries="/usr/X11R6/lib"
+dnl Find where are the X headers and libraries
+AC_PATH_X()
+
+dnl The rest of configure doesn't work if x_includes is null.
+dnl Cleaner way to do it welcomes
+if test -z ${x_includes} ;then
+ x_includes="/usr/includes"
fi
dnl it seems that autoconf do the pkg-config detection only for the first PKG_CHECK_MODULES in the configure.ac ( which is logical) but in our case it is nested in a if so it was not working if you're not on linux or have disable hal.