Re: Build configuration via defines

[Marc Balmer <marc@...>]

Am 09.07.2018 um 15:13 schrieb Roberto Ierusalimschy <roberto@inf.puc-rio.br>:

>> On 9 July 2018 at 22:44, Roberto Ierusalimschy <roberto@inf.puc-rio.br> wrote:
>>>> I assume this doesn't occur today as luaconf.h is installed as a
>>>> header onto end user systems.
>>>> There are some ways around this:
>>>>  - some of the defines (such as LUA_ROOT) probably don't need to be
>>>> available for compiling modules
>>>>  - for values that do need to exist at runtime, they could be made
>>>> available through externs, or some new function
>>>> lua_compilation_flags();
>>> 
>>> I did not understand your points here.
>> 
>> Lets ignore my assumption then:
>> Is there a reason that lua isn't configurable by command line defines
>> instead of editing luaconf.h?
> 
> Several configurations affect the API. So, if you compile Lua with
> some options and then compile your code with other options, they will
> not match. Moreover, there are many configurations, and a .h file is
> more portable than a makefile. But I guess we can add '#if !defined'
> around several of them (like LUA_ROOT).
> 

I‘d very much appreciate that, esp. for Lua in NetBSD.


> -- Roberto
> 
- mb