jffs2: make lzo optional at build time

The external lzo dep can be a pain to deal with when cross-compiling,
so make it optional for jffs2.  This is useful if people aren't even
using the functionality, or for quicker development.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/compr_lzo.c b/compr_lzo.c
index d0f0ed7..d2e2afc 100644
--- a/compr_lzo.c
+++ b/compr_lzo.c
@@ -24,6 +24,8 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
+
+#ifndef WITHOUT_LZO
 #include <asm/types.h>
 #include <linux/jffs2.h>
 #include <lzo/lzo1x.h>
@@ -118,3 +120,16 @@ void jffs2_lzo_exit(void)
 	free(lzo_compress_buf);
 	free(lzo_mem);
 }
+
+#else
+
+int jffs2_lzo_init(void)
+{
+	return 0;
+}
+
+void jffs2_lzo_exit(void)
+{
+}
+
+#endif