Re: [lwip-users] Compile errors with lwip 0.7.0 and contrib-20040122

[Peter Graf]

Nick Plant wrote:

> I am trying to build the unixsim program under Windows 95 using Cygwin. I 
> am doing this to get familiar with lwIP before porting it to our ARM7 
> boards. I am surprised to find that when I build unixsim I get many 
> compiler warnings and an error. I wonder if something is mis-configured on 
> my system, or is there a problem compiling contrib-20040122 under Cygwin?
>
> Some of the warnings are caused by the redefinition of the types u_long, 
> u_int, u_short and u_char. They are defined in lwip/src/netif/ppp/ppp.h 
> and also in /usr/include/sys/types.h  The definition in ppp.h is like this:

[snip]

On my non-Unix/non-GCC target the mess due to the u_xxx definitions was 
even bigger. Question to the maintainers: Wouldn't it be better to use the 
generic lwip type definitions (u8_t, s8_t, ...) in the ppp files also?

Another thing that has puzzled me a bit, is that sys_msleep() is now forced 
to use the overhead of allocating and deallocating a semaphore on every 
call. Wouldn't it be better to allow sys_msleep() to be implemented in 
sys_arch.c?

All the best
Peter