wlroots: Undefined: __typeof__ and others

[joscha-alisch]

I'm trying to generate bindings for wlroots, but encountered lots of issues parsing headers.

Trying to break it down into manageable chunks and I'm currently trying to just parse wayland-server-core.h which is the main dependency of wlroots.

c-for-go fails with the following message:

/usr/include/wayland-server-core.h:458:2: undefined: __typeof__
/usr/include/wayland-server-core.h:458:2: undefined: __typeof__
/usr/include/wayland-server-core.h:458:2: undefined: __builtin_offsetof
/usr/include/wayland-server-core.h:458:2: called object is not a function or function pointer (have '<undefined>')
/usr/include/wayland-server-core.h:458:46: undefined: link
/usr/include/wayland-server-core.h:458:2: called object is not a function or function pointer (have '<undefined>')
/usr/include/wayland-server-core.h:458:2: called object is not a function or function pointer (have '<undefined>')
/usr/include/wayland-server-core.h:458:2: called object is not a function or function pointer (have '<undefined>')
/usr/include/wayland-server-core.h:458:2: assignment from incompatible type ('struct wl_listener*' = '<undefined>')
/usr/include/wayland-server-core.h:458:2: undefined: __typeof__
too many errors

When I use "--ccdefs", I get the following

[ERR] /usr/include/bits/byteswap.h:37:10: called object is not a function or function pointer (have '<undefined>') (and 6 more errors)

Not sure if with that flag it fails at an earlier or later point in parsing. Anyways, in an attempt to just push through, I also included a stub file with the functions missing in byteswap.h:

static inline unsigned short __builtin_bswap16(unsigned short a)
{
    return (a<<8)|(a>>8);
}

static inline unsigned short __builtin_bswap32(unsigned short a)
{
    return (a<<16)|(a>>16);
}

static inline unsigned short __builtin_bswap64(unsigned short a)
{
    return (a<<32)|(a>>32);
}

after which I get the following:

[ERR] /usr/include/bits/mathcalls.h:53:1: unexpected identifier acosf32, expected one of ['(', ')', ',', ':', ';', '=', '[', '{', _Bool, _Complex, _Noreturn, _Static_assert, asm, auto, char, const, double, enum, extern, float, inline, int, long, register, restrict, short, signed, static, struct, typedef, typedefname, typeof, union, unsigned, void, volatile]

So something seems very messed up here. Anything obvious I'm doing wrong? Is wlroots possibly too complex for c-for-go?