Bug#604603: gobject-introspection: FTBFS on m68k: size checks fail

[Richard Zidlicky]

On Tue, Nov 23, 2010 at 12:06:37AM +0000, Thorsten Glaser wrote:
> Source: gobject-introspection
> Version: 0.6.14-1
> Severity: important
> Justification: fails to build from source on debian-ports.org arch
> 
> Hi,
> 
> I today discovered that something named gobject-introspection exists ☺
> and is a build-dependency of udev ☹ and doesn’t want to build on m68k.
> 
> It never built:
> http://buildd.debian-ports.org/build.php?pkg=gobject-introspection&arch=m68k
> 
> We’re coming further, with TLS support, modern eglibc, and in cowbuilder,
> but not quite there yet. Please help.
> 
> Thanks in advance!

> .../tools/g-ir-compiler --includedir=. --includedir=../gir --includedir=. --includedir=../gir --includedir=. cairo-1.0.gir -o cairo-1.0.typelib
> sizeof(Header) is expected to be 112 but is 110.
> sizeof(ArgBlob) is expected to be 16 but is 14.
> sizeof(InterfaceBlob) is expected to be 40 but is 38.
> **
> ERROR:gitypelib.c:193:g_typelib_check_sanity: assertion failed: (size_check_ok)

without understanding anything of gobject my guess is that the "sanity check" is insane 
and makes illegal assumptions about packaging of structs. Look at ArgBlob, it is probably
a struct with some member only 8 or 16 bit size. On nearly any other architecture this 
gets padded to 32 bits, on m68k minimum padding of struct members is 16 bits.

If thats is the case its a bug in the sanity check.

Hth
Richard