--- Makefile.old
+++ Makefile
@@ -1,6 +1,7 @@
 CC=gcc
-CFLAGS=-O3 -Wall -Wextra -Wno-unknown-pragmas -Wcast-qual
-LDFLAGS=
+CFLAGS=-march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -flto -fuse-linker-plugin -fno-exceptions
+LDFLAGS=-Wl,-O1
+
 # CFLAGS=-O3 -Wall -Wextra -Wno-unknown-pragmas -Wcast-qual -g -fsanitize=thread
 # LDFLAGS=-g -fsanitize=thread
 # CFLAGS=-O3 -Wall -Wextra -Wno-unknown-pragmas -Wcast-qual -g -fsanitize=address
@@ -105,7 +106,7 @@
 pigz.pdf: pigz.1
 	groff -mandoc -f H -T ps pigz.1 | ps2pdf - pigz.pdf
 
-all: pigz pigzj pigzt pigzn docs
+all: pigz pigzj pigzt pigzn
 
 clean:
 	@rm -f *.o pigz unpigz pigzj pigzn pigzt pigz.c.gz pigz.c.zz pigz.c.zip