--- CPP/7zip/Compress/LZMA_Alone/makefile.gcc
+++ CPP/7zip/Compress/LZMA_Alone/makefile.gcc
@@ -3,7 +3,7 @@
 CXX_C = gcc -O2 -Wall
 LIB = -lm
 RM = rm -f
-CFLAGS = -c -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
+CFLAGS = -c -Wno-unused-but-set-variable -Wno-unused-parameter -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
 
 ifdef SystemDrive
 IS_MINGW = 1