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-rwxr-xr-xcmake/Modules/detectCacheSize.cmake21
1 files changed, 21 insertions, 0 deletions
diff --git a/cmake/Modules/detectCacheSize.cmake b/cmake/Modules/detectCacheSize.cmake
new file mode 100755
index 000000000..a8209bb27
--- /dev/null
+++ b/cmake/Modules/detectCacheSize.cmake
@@ -0,0 +1,21 @@
+# Detect the cache size
+#
+# XXX: TODO: This is a bug when cross compiling. We are detecting the local
+# Cache Line size and not the target cache line size. We should provide some
+# way to define this
+
+set(LEVEL1_DCACHE_LINESIZE 32)
+
+if( APPLE )
+ execute_process(COMMAND sysctl -n hw.cachelinesize
+ OUTPUT_VARIABLE LEVEL1_DCACHE_LINESIZE
+ OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif( APPLE )
+
+if( ${CMAKE_SYSTEM_NAME} STREQUAL "Linux" )
+ execute_process(COMMAND getconf LEVEL1_DCACHE_LINESIZE
+ OUTPUT_VARIABLE LEVEL1_DCACHE_LINESIZE
+ OUTPUT_STRIP_TRAILING_WHITESPACE)
+endif()
+
+message(STATUS "Cache line size: ${LEVEL1_DCACHE_LINESIZE}")