Install issue on Ubuntu

[baseliners]

Hi - I get the following error while trying to install on Ubuntu. I installed libpoppler-cpp-dev prior to installing pdftools. Error:

* installing to library ‘/home/dev/R/x86_64-pc-linux-gnu-library/3.2’
* installing *source* package ‘pdftools’ ...
** package ‘pdftools’ successfully unpacked and MD5 sums checked
Found pkg-config cflags and libs!
Using PKG_CFLAGS=-I/usr/local/include/poppler/cpp -I/usr/local/include/poppler
Using PKG_LIBS=-L/usr/local/lib -lpoppler-cpp
** libs
g++ -I/usr/share/R/include -DNDEBUG -I/usr/local/include/poppler/cpp -I/usr/local/include/poppler    -I"/usr/local/lib/R/site-library/Rcpp/include"   -fpic  -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -g  -c RcppExports.cpp -o RcppExports.o
g++ -I/usr/share/R/include -DNDEBUG -I/usr/local/include/poppler/cpp -I/usr/local/include/poppler    -I"/usr/local/lib/R/site-library/Rcpp/include"   -fpic  -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -g  -c bindings.cpp -o bindings.o
g++ -I/usr/share/R/include -DNDEBUG -I/usr/local/include/poppler/cpp -I/usr/local/include/poppler    -I"/usr/local/lib/R/site-library/Rcpp/include"   -fpic  -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -g  -c init.cpp -o init.o
g++ -shared -L/usr/lib/R/lib -Wl,-Bsymbolic-functions -Wl,-z,relro -o pdftools.so RcppExports.o bindings.o init.o -L/usr/local/lib -lpoppler-cpp -L/usr/lib/R/lib -lR
installing to /home/dev/R/x86_64-pc-linux-gnu-library/3.2/pdftools/libs
** R
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
Error in dyn.load(file, DLLpath = DLLpath, ...) :
  unable to load shared object '/home/dev/R/x86_64-pc-linux-gnu-library/3.2/pdftools/libs/pdftools.so':
  /home/dev/R/x86_64-pc-linux-gnu-library/3.2/pdftools/libs/pdftools.so: undefined symbol: _ZN7poppler24set_debug_error_functionEPFvRKSsPvES2_
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/home/dev/R/x86_64-pc-linux-gnu-library/3.2/pdftools’

[jeroen]

You have a version conflict between libpoppler-dev and another version of libpoppler which you manually compiled in /usr/local. Try removing the latter.

[baseliners]

Thanks. I removed all the libpoppler* files in /usr/local/lib and re-tried but still get the same error. I then removed the libpoppler-cpp-dev package and re-installed via apt-get but still get the same error.

[jeroen]

Mmm you should have better run make uninstall from the source directory that you used to build poppler. Anyway from your output it looks like you need to remove at least /usr/local/include/poppler.

[baseliners]

make uninstall did the trick, thanks! One unrelated qn (I can open another thread if needed) - is there an easy way to get a line of text on a given page? Something like cat(txt[1][2])? I do see the newline characters so I can parse it but would be nice if this were built-in. Thoughts?

[alexstorer]

I'm running into the same problem on Mac. I tried to install poppler using hombrew in the following variations:

• brew install --build-from-source -cc=g++ poppler
• brew install --build-from-source poppler
• brew install poppler

I also tried changing my compiler settings in ~/.R/Makevars from g++ to clang. All yielded the same error in R.

Error: package or namespace load failed for ‘pdftools’ in dyn.load(file, DLLpath = DLLpath, ...): unable to load shared object '/usr/local/lib/R/site-library/pdftools/libs/pdftools.so': dlopen(/usr/local/lib/R/site-library/pdftools/libs/pdftools.so, 6): Symbol not found: __ZN7poppler24set_debug_error_functionEPFvRKSsPvES2_ Referenced from: /usr/local/lib/R/site-library/pdftools/libs/pdftools.so Expected in: flat namespace in /usr/local/lib/R/site-library/pdftools/libs/pdftools.so

[jeroen]

Can you post your sessionInfo () and install output please?