Allow undefined LZ4_MAX_INPUT_SIZE

Summary:
Because the version of lz4 that ships by default with Ubuntu 13.10 doesn't
define it (but has lz4_decompress_safe, so it's usable)

Test Plan: built on Ubuntu 13.10

Reviewed By: meyering@fb.com

Subscribers: jhj, lesha, kma

FB internal diff: D1433864

@override-unit-failures

diff --git a/folly/io/Compression.cpp b/folly/io/Compression.cpp
index f4e12e6297175f1725c5bf32a4a67834e42c4308..cbfaf68c8eb39b5014a05ed49cc87e8362d5ed47 100644 (file)
--- a/folly/io/Compression.cpp
+++ b/folly/io/Compression.cpp
@@ -217,6 +217,13 @@ bool LZ4Codec::doNeedsUncompressedLength() const {
   return !encodeSize();
 }
 
+// The value comes from lz4.h in lz4-r117, but older versions of lz4 don't
+// define LZ4_MAX_INPUT_SIZE (even though the max size is the same), so do it
+// here.
+#ifndef LZ4_MAX_INPUT_SIZE
+# define LZ4_MAX_INPUT_SIZE 0x7E000000
+#endif
+
 uint64_t LZ4Codec::doMaxUncompressedLength() const {
   return LZ4_MAX_INPUT_SIZE;
 }