LZ4_MEMORY_USAGE can be modified from compilation command line

2 files changed, 6 insertions, 2 deletions

diff --git a/NEWS b/NEWS
index 1d42954..8075947 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,6 @@
+v1.7.6
+build : LZ4_MEMORY_USAGE can be modified at compile time, through external define
+
 v1.7.5
 lz4hc : new high compression mode : levels 10-12 compress more and slower, by Przemyslaw Skibinski
 lz4cat : fix : works with relative path (#284) and stdin (#285) (reported by @beiDei8z)
diff --git a/lib/lz4.h b/lib/lz4.h
index 0aae19c..3dc115b 100644
--- a/lib/lz4.h
+++ b/lib/lz4.h
@@ -108,8 +108,9 @@ LZ4LIB_API const char* LZ4_versionString (void);
  * Reduced memory usage can improve speed, due to cache effect
  * Default value is 14, for 16KB, which nicely fits into Intel x86 L1 cache
  */
-#define LZ4_MEMORY_USAGE 14
-
+#ifndef LZ4_MEMORY_USAGE
+# define LZ4_MEMORY_USAGE 14
+#endif
 
 /*-************************************
 *  Simple Functions