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Re: Unable to link with Apache lib

by Vladimir Prus :: Rate this Message:

On Saturday 27 June 2009 Anant Rao wrote:

> Hi,
>
> I'm unable to get this simple thing working. My requirement is to link with Apache lib. I tried 2, 3 cases, both don't work.
>
> 1.
> path-constant SRC2 : "../shared/processors/src" ;
> path-constant SRC3 : "../shared/processors/phrasecountfeature/src" ;
> path-constant SRC4 : "../../../../ThirdParty/Apache/2.2.11/httpd-2.2.11/srclib/apr/.libs" ;
>
> project phrasecountfeature
> : source-location $(SRC1) $(SRC2) $(SRC3)
>
> searched-lib apr : : <name>libapr-1.a <file>/home/arao/SLDS/Master_Repo/dev/ThirdParty/Apache/2.2.11/httpd-2.2.11/srclib/apr/.libs ;

I don't believe that

/home/arao/SLDS/Master_Repo/dev/ThirdParty/Apache/2.2.11/httpd-2.2.11/srclib/apr/.libs

is a file -- it's a directory. Therefore, you have to use:

searched-lib apr : : <name>libapr-1.a <search>/home/arao/SLDS/Master_Repo/dev/ThirdParty/Apache/2.2.11/httpd-2.2.11/srclib/apr/.libs ;

> 2.
> path-constant SRC2 : "../shared/processors/src" ;
> path-constant SRC3 : "../shared/processors/phrasecountfeature/src" ;
> path-constant SRC4 : "../../../../ThirdParty/Apache/2.2.11/httpd-2.2.11/srclib/apr/.libs" ;
>
> project phrasecountfeature
> : source-location $(SRC1) $(SRC2) $(SRC3)
> : requirements <library>../../../../ThirdParty/Apache/2.2.11/httpd-2.2.11/srclib/apr/.libs/libapr-1.a
> ;
>
> searched-lib apr : : <name>libapr-1.a <file>/home/arao/SLDS/Master_Repo/dev/ThirdParty/Apache/2.2.11/httpd-2.2.11/srclib/apr/.libs ;
>
> lib libphrasecountfeature
> :
> phrasecountfeaturedll.cpp
> PhraseCountFeatureExtractor.cpp
> processor_modules_common.cpp
> apr
> : <define>$(DEFINES) : <link>shared ;
>
> RESULT:
> error: Unable to find file or target named
> error: '/home/arao/SLDS/Master_Repo/dev/ThirdParty/Apache/2.2.11/httpd-2.2.11/srclib/apr/.libs'
> error: referred from project at
> error: '.'

This has the same problem as the first example.

> 3.
> path-constant SRC2 : "../shared/processors/src" ;
> path-constant SRC3 : "../shared/processors/phrasecountfeature/src" ;
> path-constant SRC4 : "../../../../ThirdParty/Apache/2.2.11/httpd-2.2.11/srclib/apr/.libs" ;
>
> project phrasecountfeature
> : source-location $(SRC1) $(SRC2) $(SRC3)
>
> lib libphrasecountfeature
> :
> phrasecountfeaturedll.cpp
> PhraseCountFeatureExtractor.cpp
> processor_modules_common.cpp
> /home/arao/SLDS/Master_Repo/dev/ThirdParty/Apache/2.2.11/httpd-2.2.11/srclib/apr/.libs/libapr-1.a
> : <define>$(DEFINES) : <link>shared ;

Did you actually mean to use <link>shared as the value for the 'default-build' parameter?

> RESULT:
> This builds ok, but it doesn't really link in the Apache lib.

I am unsure what is wrong here -- though one likely reason is that you're building
everything statically, and static library cannot use another static library as source.
Anyway, the suggested fix for (1) should work.

- Volodya
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