Re: [Boost-build] question about boost includes on, cygwin/win32

From: Vladimir Prus (ghost_at_[hidden])
Date: 2007-08-09 11:23:53

Ray Lambert wrote:

> Ray Lambert wrote:
>> Thanks, that worked very well.  It still has to be manually updated but
>> at least now it only needs to be updated in one place (and committed).
>>
>> I had to change the command though to <target-os>windows and to use a
>> full
>> windows path.  I guess I'm using a somewhat mixed environment; I'm
>> building with <target-os>windows but using cygwin's gcc (which is the
>> only
>> gcc I have installed).  This is the final command that I used (in
>> Jamroot):
>>
>>   project
>>       : requirements
>>           <target-os>windows:<include>d:/cygwin/usr/include/boost-1_33_1
>>           <target-os>linux:<library>rt
>>       ;
>>   
>> (The last requirement is for my linux builds, of course.)
>>   
> 
> Hmmm... replying to myself here...
> 
> I *thought* I had tested that last part ("<target-os>linux:<library>rt")
> but it turns out that it doesn't work.  I get an error saying it can't
> find "rt" (but "[ lib rt ]" on the "exe" line works fine).  I had to use
> this instead (which did work):
> 
>     project
>         : requirements
>             <target-os>windows:<include>d:/cygwin/usr/include/boost-1_33_1
>             <target-os>linux:<linkflags>-lrt
>         ;
> 
> *Should* "<library>rt" have worked?

No. <library> is a dependency feature and the value of it should
be a name of a target. If you don't declare target named 'rt' in your
Jamfile, then

        <library>rt

won't work. You can use:

        <target-os>linux:<find-library>rt

though.

- Volodya