diff -up g2clib-1.6.0.p1234/enc_jpeg2000.c g2clib-1.6.0.p12345/enc_jpeg2000.c
--- g2clib-1.6.0.p1234/enc_jpeg2000.c	2017-08-13 10:52:12.990720854 +0200
+++ g2clib-1.6.0.p12345/enc_jpeg2000.c	2017-08-13 10:55:41.220584631 +0200
@@ -121,7 +121,9 @@ int enc_jpeg2000(unsigned char *cin,g2in
     image.clrspc_=JAS_CLRSPC_SGRAY;         /* grayscale Image */
     image.cmprof_=0; 
 #endif
+#if JAS_VERSION_MAJOR == 1
     image.inmem_=1;
+#endif
 
     cmpt.tlx_=0;
     cmpt.tly_=0;