Subject: Add way to change linker settings
From: Erwin Rol <erwin@erwinrol.com>

When cross compiling the linker can not find libz, this patch
adds a LIBS variable that makes it possible to pass the right
linker flags.

Signed-off-by: Erwin Rol <erwin@erwinrol.com>

--- squashfs3.4/squashfs-tools/Makefile.orig	2010-02-27 00:01:56.000000000 +0100
+++ squashfs3.4/squashfs-tools/Makefile	2010-02-27 00:02:46.000000000 +0100
@@ -4,10 +4,12 @@
 
 CFLAGS := -I$(INCLUDEDIR) -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_GNU_SOURCE -O2
 
+LIBS := -lz -lpthread -lm 
+
 all: mksquashfs unsquashfs
 
 mksquashfs: mksquashfs.o read_fs.o sort.o
-	$(CC) mksquashfs.o read_fs.o sort.o -lz -lpthread -lm -o $@
+	$(CC) mksquashfs.o read_fs.o sort.o $(LIBS) $(LDFLAGS) -o $@
 
 mksquashfs.o: mksquashfs.c squashfs_fs.h mksquashfs.h global.h sort.h
 
@@ -16,7 +18,7 @@
 sort.o: sort.c squashfs_fs.h global.h sort.h
 
 unsquashfs: unsquashfs.o
-	$(CC) unsquashfs.o -lz -lpthread -lm -o $@
+	$(CC) unsquashfs.o $(LIBS) $(LDFLAGS) -o $@
 
 unsquashfs.o: unsquashfs.c squashfs_fs.h read_fs.h global.h