Use RunProgram.cmake not GeneratePYX.cmake.

CMake/GeneratePYX.cmake

@@ -1,8 +0,0 @@
-# GeneratePYX.cmake: a CMake script that actually runs the given program to
-# generate a .pyx file.
-#
-# This script depends on the following arguments:
-#
-#   GENERATE_PYX_PROGRAM: the program to run to generate the .pyx file.
-#   PYX_OUTPUT_FILE: the file to store the output in.
-execute_process(COMMAND ${GENERATE_PYX_PROGRAM} OUTPUT_FILE ${PYX_OUTPUT_FILE})

src/mlpack/bindings/python/CMakeLists.txt

@@ -203,9 +203,9 @@ if (BUILD_PYTHON_BINDINGS)
       -DBINDING_TYPE=BINDING_TYPE_PYX)
   add_custom_command(TARGET generate_pyx_${name} POST_BUILD
       COMMAND ${CMAKE_COMMAND}
-          -DGENERATE_PYX_PROGRAM=${CMAKE_BINARY_DIR}/bin/generate_pyx_${name}
-          -DPYX_OUTPUT_FILE=${CMAKE_BINARY_DIR}/src/mlpack/bindings/python/mlpack/${name}.pyx
-          -P ${CMAKE_SOURCE_DIR}/CMake/GeneratePYX.cmake)
+          -DPROGRAM=${CMAKE_BINARY_DIR}/bin/generate_pyx_${name}
+          -DOUTPUT_FILE=${CMAKE_BINARY_DIR}/src/mlpack/bindings/python/mlpack/${name}.pyx
+          -P ${CMAKE_SOURCE_DIR}/CMake/RunProgram.cmake)
 
   # Build the pyx.  Since distutils doesn't support a parallel build, we'll
   # enforce it here.  Although this will always be rebuilt, that's okay because