[cmake] disable legacy support by default

can still be explicitly enabled

diff --git a/build/cmake/CMakeModules/ZstdOptions.cmake b/build/cmake/CMakeModules/ZstdOptions.cmake
index 3fca543a78e38aa3d2911c16ee94beff198db584..dc7813444e27d0f95d7246ab17e2f8fd570cc5a6 100644 (file)
--- a/build/cmake/CMakeModules/ZstdOptions.cmake
+++ b/build/cmake/CMakeModules/ZstdOptions.cmake
@@ -2,8 +2,8 @@
 # ZSTD Build Options Configuration
 # ################################################################
 
-# Legacy support configuration
-option(ZSTD_LEGACY_SUPPORT "Enable legacy format support" ON)
+# Legacy support configuration (disabled by default)
+option(ZSTD_LEGACY_SUPPORT "Enable legacy format support" OFF)
 
 if(ZSTD_LEGACY_SUPPORT)
     message(STATUS "ZSTD_LEGACY_SUPPORT enabled")