On Mon, Nov 19, 2012 at 9:36 PM, Linda Li <[email protected]>wrote:
> Hah, I figured it out. > You are right, "undefined" does not mean "undeclared". So I think I found > a one wrong lib. > > I checked the Makefile, although a lot of strange words there, there are > LIBS = -llept -lpthread > So I include pthread in it. > Now the tesseractmain.cpp builds. (only it, yes, I put other .cpp files > containing main() to .txt files, wired, violent but worked : ) > > Thanks a lot for zdenop's help. > Hint: look at Makefile.am - it is simplier and Makefile(.in) is generated from it (autotools do it). > > On Monday, November 19, 2012 10:30:07 AM UTC-6, zdenop wrote: > >> 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 <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 >> > -- > You received this message because you are subscribed to the Google > Groups "tesseract-ocr" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/tesseract-ocr?hl=en > -- Zdenko -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/tesseract-ocr?hl=en
