--- ./a/zzip/_config.h	2018-10-11 12:28:07.994739469 +0200

+++ ./b/zzip/_config.h	2018-10-11 10:30:48.000000000 +0200

@@ -133,9 +133,11 @@

 /* whether the system defaults to 32bit off_t but can do 64bit when requested

    */

+#if __WORDSIZE == 32

 #ifndef ZZIP_LARGEFILE_SENSITIVE 

 #define ZZIP_LARGEFILE_SENSITIVE  1 

 #endif

+#endif

 /* Define to the sub-directory in which libtool stores uninstalled libraries.

    */

@@ -185,7 +187,11 @@

 /* The number of bytes in type long */

 #ifndef ZZIP_SIZEOF_LONG 

-#define ZZIP_SIZEOF_LONG  4 

+#if __WORDSIZE == 32

+#define ZZIP_SIZEOF_LONG  4

+#elif __WORDSIZE == 64

+#define ZZIP_SIZEOF_LONG  8 

+#endif

 #endif

 /* The number of bytes in type short */

@@ -221,9 +227,11 @@

 #endif

 /* Number of bits in a file offset, on hosts where this is settable. */

+#if __WORDSIZE == 32

 #ifndef ZZIP__FILE_OFFSET_BITS 

 #define ZZIP__FILE_OFFSET_BITS  64 

 #endif

+#endif

 /* Define for large files, on AIX-style hosts. */

 /* #undef _LARGE_FILES */