Re: [Boost-build] cxxflags bug ?

Subject: Re: [Boost-build] cxxflags bug ?
From: Gevorg Voskanyan (v_gevorg_at_[hidden])
Date: 2011-04-08 09:51:43

Paulo Márcio Figueiredo Alves wrote:

> To: Boost.Build developer's and user's list <boost-build_at_[hidden]>
> Sent: Fri, April 8, 2011 6:33:28 PM
> Subject: Re: [Boost-build] cxxflags bug ?
> 
> It's missing some information. It just fails if I use conditional,  like:
> <toolset>msvc:<cxxflags>/Zc:wchar_t-
> 
> I'm sending a  sample now, the expected output is:
> 
> ...
> main.cc(2) : error C2065: 'wchar_t' : undeclared  identifier
> main.cc(2) : error C2146: syntax error : missing ';' before  identifier 'tmp'
> main.cc(2) : error C2065: 'tmp' : undeclared  identifier
> ...
> 
> but it does not occur.
> 
> # project-root.jam
> exe  cxxflags_bug : main.cc : <toolset>msvc:<cxxflags>/Zc:wchar_t-  ;
> 
> # main.cc
> void main() { wchar_t tmp = '\0'; }

A workaround is to embed the flags value in quotes and append a trailing space 
inside:

exe  cxxflags_workaround : main.cc : <toolset>msvc:<cxxflags>"/Zc:wchar_t- "  ;

Didn't investigate why the original doesn't work though -- I'd ask you to open a 
ticket at https://trac.lvk.cs.msu.su/boost.build/ so it isn't forgotten 
(svn.boost.org seems broken at this moment).

Thanks,
Gevorg