Export ZSTD_LEGACY_SUPPORT in tests/Makefile (facebook#3955)

embg · hswong3i · commit 611e4a077a07 · 2024-03-27T21:44:57.000+08:00
This doesn't affect most of the targets, but will help me sleep better at night knowing that future refactors won't break the legacy support. Should have been included in facebook#3943 but I noticed after that merged, so putting up a separate PR.
diff --git a/tests/Makefile b/tests/Makefile
@@ -21,6 +21,7 @@
 # ##########################################################################
 
 ZSTD_LEGACY_SUPPORT ?= 5
+export ZSTD_LEGACY_SUPPORT
 
 DEBUGLEVEL ?= 2
 export DEBUGLEVEL  # transmit value to sub-makefiles
