[Reproducible-builds] Bug#778563: differing header files

[Reiner Herrmann]

Source: witty
Version: 3.3.3+dfsg-4.1
User: reproducible-builds at lists.alioth.debian.org

Hi!

While working on Debian's “reproducible builds” effort [1], we have
noticed that witty doesn't build reproducibly [2].

There is a difference in the header file /usr/include/Wt/WConfig.h.
Depending on the build, some macros are defined or not:

On one build it had the following content:

#define WT_STATIC
#define WTDBO_STATIC
#define WTDBOPOSTGRES_STATIC
#define WTDBOSQLITE3_STATIC
#define WTDBOFIREBIRD_STATIC
#define WTDBOMYSQL_STATIC
#define WTHTTP_STATIC
#define WT_EXT_STATIC
#define WT_EXT_STATIC

While on another build it contained the following lines:

/* #undef WT_STATIC */
/* #undef WTDBO_STATIC */
/* #undef WTDBOPOSTGRES_STATIC */
/* #undef WTDBOSQLITE3_STATIC */
/* #undef WTDBOFIREBIRD_STATIC */
/* #undef WTDBOMYSQL_STATIC */
/* #undef WTHTTP_STATIC */
/* #undef WT_EXT_STATIC */
/* #undef WT_EXT_STATIC */

The build environments differed in user/group, hostname, time,
locale, but the toolchain was the same.  The generated header
should always be identical with the same toolchain.

Regards,
 Reiner


[1]: https://wiki.debian.org/ReproducibleBuilds
[2]: https://reproducible.debian.net/witty


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