Re: Porting lua to a embeded platform

[Chunlin Zhang <zhangchunlin@...>]

Ico Doornekamp wrote:
> * On 2008-05-20 Chunlin Zhang <zhangchunlin@gmail.com> wrote  :
>
> > Ico Doornekamp wrote:
> > > * On 2008-05-20 chunlin zhang <zhangchunlin@gmail.com> wrote  :
> > >
> > > > Many of the C runtime lib api could not be used in this platform
> > > > especially "stdio.h",i.e.: malloc/free/realloc printf/fprintf
> > > > fopen/fread/fwrite/fclose remove/rename/tmpfile(the platform have
> > > > its own file system api with UTF16 string parameter)
> > > > I spent 1 night to compile lua into the platform.  And spent 2 day
> > > > to run "hello world"(using luaL_dostring) in the PC  emulator.
> > > > Spent 3 day to run "hello world" in mobile phone,because found that
> > > > I  should get rid of the C runtime api not support in the platform.
> > > >
> > > > And now I want to run lua script from file(using luaL_dofile),and
> > > > found  that I should rewrite luaL_loadfile and so on with platform
> > > > utf16 string  file system api.I think I will spend more days...
> > > >
> > > > Have anyone else ever done this kind of porting?Or any advice to
> > > > me...
> > > I think there are generally two ways of porting Lua to a platform
> > > like yours: one is to just start compiling, find where the build
> > > breaks, and modify the Lua code to use your platform-specific API
> > > instead of the standard C library functions. This is a lot of work,
> > > and in the end leaves you with a severely modified Lua
> > > implementation, which will not make future updates any easier.
> > Any code using the C runtime lib api can be compile in this
> > platform. But i.e. the call of "malloc/free" make the mobile phone can
> > not boot normally, and I don't know why exactly.
>
> If I were you I'd focus on finding out why this is the case before
> making an difficult effort porting code which relies heavily on these
> functions. It would make your life a lot easier if these functions are
> just available and work as they should. Don't you have a platform or OS
> vendor who can support you on this issue ?
Currently this platform using ADS(ARM Developer Suite) to compile the 
source,and the C runtime lib is using ADS version.
And the platform vendor has his own memory management and file system 
implementation other than C runtime library.So they will not support to 
the C runtime library issue.