diff --git a/cmake/prebuild.cmake b/cmake/prebuild.cmake
index a33acbb..451422d 100644
--- a/cmake/prebuild.cmake
+++ b/cmake/prebuild.cmake
@@ -39,6 +39,9 @@
 
 # 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")
@@ -1399,8 +1402,8 @@ 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}")
 
@@ -1426,8 +1429,8 @@ execute_process(COMMAND "${PROJECT_BINARY_DIR}/${GETARCH_BIN}" 1 OUTPUT_VARIABLE
   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}" ${GETARCH2_CONF_OUT})
diff --git a/cmake/system.cmake b/cmake/system.cmake
index 631e7fe..83220ce 100644
--- a/cmake/system.cmake
+++ b/cmake/system.cmake
@@ -13,6 +13,9 @@ if(CMAKE_CROSSCOMPILING AND NOT DEFINED TARGET)
     set(TARGET "ARMV8")
   elseif(ARM)
     set(TARGET "ARMV7") # TODO: Ask compiler which arch this is
+  elseif(${HOST_OS} STREQUAL "WINDOWSSTORE")
+    set(CMAKE_CROSSCOMPILING 0)
+    add_definitions(-D_CRT_SECURE_NO_WARNINGS=1)
   else()
     message(FATAL_ERROR "When cross compiling, a TARGET is required.")
   endif()