--- /dev/null
+diff -Nur lz4-1.9.2.orig/lib/Makefile lz4-1.9.2/lib/Makefile
+--- lz4-1.9.2.orig/lib/Makefile 2019-10-29 08:14:03.167415441 +0000
++++ lz4-1.9.2/lib/Makefile 2019-10-29 08:14:43.243864994 +0000
+@@ -144,7 +144,7 @@
+ # directory variables : GNU conventions prefer lowercase
+ # see https://www.gnu.org/prep/standards/html_node/Makefile-Conventions.html
+ # support both lower and uppercase (BSD), use lower in script
+-PREFIX ?= /usr/local
++PREFIX ?= /usr
+ prefix ?= $(PREFIX)
+ EXEC_PREFIX ?= $(prefix)
+ exec_prefix ?= $(EXEC_PREFIX)
+diff -Nur lz4-1.9.2.orig/programs/Makefile lz4-1.9.2/programs/Makefile
+--- lz4-1.9.2.orig/programs/Makefile 2019-10-29 08:14:03.177415386 +0000
++++ lz4-1.9.2/programs/Makefile 2019-10-29 08:14:30.267268628 +0000
+@@ -132,7 +132,7 @@
+ # directory variables : GNU conventions prefer lowercase
+ # see https://www.gnu.org/prep/standards/html_node/Makefile-Conventions.html
+ # support both lower and uppercase (BSD), use lowercase in script
+-PREFIX ?= /usr/local
++PREFIX ?= /usr
+ prefix ?= $(PREFIX)
+ EXEC_PREFIX ?= $(prefix)
+ exec_prefix ?= $(EXEC_PREFIX)