--- a/cmake/prebuild.cmake	2019-01-28 03:05:58.422245700 -0600
+++ b/cmake/prebuild.cmake	2019-01-28 03:07:02.885495800 -0600
@@ -37,6 +37,9 @@
 
 # CPUIDEMU = ../../cpuid/table.o
 
+if (NOT DEFINED BLASHELPER_BINARY_DIR)
+  set(BLASHELPER_BINARY_DIR "${PROJECT_BINARY_DIR}")
+endif ()
 
 if (DEFINED CPUIDEMU)
   set(EXFLAGS "-DCPUIDEMU -DVENDOR=99")
@@ -310,8 +313,8 @@ else(NOT CMAKE_CROSSCOMPILING)
   message(STATUS "Running getarch")
 
   # use the cmake binary w/ the -E param to run a shell command in a cross-platform way
-execute_process(COMMAND "${PROJECT_BINARY_DIR}/${GETARCH_BIN}" 0 OUTPUT_VARIABLE GETARCH_MAKE_OUT)
-execute_process(COMMAND "${PROJECT_BINARY_DIR}/${GETARCH_BIN}" 1 OUTPUT_VARIABLE GETARCH_CONF_OUT)
+execute_process(COMMAND "${BLASHELPER_BINARY_DIR}/${GETARCH_BIN}" 0 OUTPUT_VARIABLE GETARCH_MAKE_OUT)
+execute_process(COMMAND "${BLASHELPER_BINARY_DIR}/${GETARCH_BIN}" 1 OUTPUT_VARIABLE GETARCH_CONF_OUT)
 
   message(STATUS "GETARCH results:\n${GETARCH_MAKE_OUT}")
 
@@ -337,8 +340,8 @@ execute_process(COMMAND "${PROJECT_BINAR
   endif ()
 
   # use the cmake binary w/ the -E param to run a shell command in a cross-platform way
-execute_process(COMMAND "${PROJECT_BINARY_DIR}/${GETARCH2_BIN}" 0 OUTPUT_VARIABLE GETARCH2_MAKE_OUT)
-execute_process(COMMAND "${PROJECT_BINARY_DIR}/${GETARCH2_BIN}" 1 OUTPUT_VARIABLE GETARCH2_CONF_OUT)
+execute_process(COMMAND "${BLASHELPER_BINARY_DIR}/${GETARCH2_BIN}" 0 OUTPUT_VARIABLE GETARCH2_MAKE_OUT)
+execute_process(COMMAND "${BLASHELPER_BINARY_DIR}/${GETARCH2_BIN}" 1 OUTPUT_VARIABLE GETARCH2_CONF_OUT)
 
   # append config data from getarch_2nd to the TARGET file and read in CMake vars
   file(APPEND ${TARGET_CONF_TEMP} ${GETARCH2_CONF_OUT})