On Sun, Nov 18, 2012 at 11:49 PM, Linda Li <[email protected]>wrote:
> I build it to run tessearctmain.cpp.
>
> I do not intend to compile the whole
>
>
> Thanks to instruction from Zdenko, I add the symbols as follows:
>
> In Eclipse, Project Properties->C/C++ General->Paths and Symbols
>
> Symbol, Value.
>
> USE_STD_NAMESPACE
>
> VERSION=\"3.02.02\"
>
>
> Now building succeeds.
>
> Compile has errors, complaining there are several main() functions.
>
> I have little knowledge of makefile, which I guess can circumvent this
> problem, so I renamed all functions with main(), except tesseractmain.cpp,
> to .txt files.
>
Are you sure you know what are you doing?
> Now the compiling errors are:
>
> svutil.cpp:129: undefined reference to `sem_init'
>
> svutil.cpp:137: undefined reference to `sem_post'
>
> svutil.cpp:145: undefined reference to `sem_wait'
>
> svutil.cpp:188: undefined reference to `pthread_create'
>
>
> I search the word “sem_init”, which is in the configure file.
>
> I do not understand the configure file.
>
> Finding some commands containing “sem_init”
>
> { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing
> sem_init" >&5
>
> char sem_init ();
>
> int
>
> main ()
>
> {
>
> return sem_init ();
>
> ;
>
> return 0;
>
> }
>
>
> Google, found http://code.google.com/p/tesseract-ocr/issues/detail?id=757
>
> “The build fails as sem_init is in librt on Solaris. The attached patch
> adds searching for sem_init in librt. After that the build succeeds.”
>
>
> Search librt in the libraries:
>
> /usr/lib/x86_64-linux-gnu/
>
> librt.a
>
> librt.so
>
>
> So I include /usr/lib/x86_64-linux-gnu into the Library Paths
>
> Include rt into Libraries.
>
>
> Rebuild the project with hope....
>
>
> Again, the same compiling errors are:
>
> svutil.cpp:129: undefined reference to `sem_init'
>
> svutil.cpp:137: undefined reference to `sem_post'
>
> svutil.cpp:145: undefined reference to `sem_wait'
>
> svutil.cpp:188: undefined reference to `pthread_create'
>
> I guess I need to include some header files. But I failed to find one.
>
> Or do I have to learn autotool to achieve what I want?
> An easy way?
>
Hmm, why you are trying to use tesseract withing Ellipse (personally I
found to work with eclipse more difficult than other solutions, but it
could be my problem) if you have no clue about standard compiler errors
;-)?
That error means that linker is missing library that provide sem_init,
sem_post, sem_wait, pthread_create on YOUR system (copying from other
system does not always work).
--
Zdenko
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