---- a/Makefile 2019-05-22 19:54:23.980451289 +0800
-+++ b/Makefile 2019-05-09 14:20:36.269505910 +0800
-@@ -1,4 +1,3 @@
+--- a/Makefile
++++ b/Makefile
+@@ -1,11 +1,11 @@
-CC=gcc
- CFLAGS=-O3 -Wall -Wextra -Wno-unknown-pragmas
- LDFLAGS=
- LIBS=-lm -lpthread -lz
-@@ -102,3 +101,6 @@ all: pigz pigzj pigzt pigzn docs
+-CFLAGS=-O3 -Wall -Wextra -Wno-unknown-pragmas -Wcast-qual
+-LDFLAGS=
++CC?=gcc
++CFLAGS?=-O3 -Wall -Wextra -Wno-unknown-pragmas -Wcast-qual
++LDFLAGS?=
+ # 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
+ # LDFLAGS=-g -fsanitize=address
+-LIBS=-lm -lpthread -lz
++LIBS?=-lm -lpthread -lz
+ ZOPFLI=zopfli/src/zopfli/
+ ZOP=deflate.o blocksplitter.o tree.o lz77.o cache.o hash.o util.o squeeze.o katajainen.o symbols.o
- clean:
- @rm -f *.o pigz unpigz pigzj pigzn pigzt pigz.c.gz pigz.c.zz pigz.c.zip
-+
-+install:
-+ true