将库添加到Eclipse C ++项目（ROOT）

Question

I am trying to import library in eclipse but I cant do it. I know there many threads already talked about this issue but I couldn't solve my problem with those. So I appreciate if you can help. I have text code:

#include <iostream>
#include <TRandom1.h>
int main(void) {
  TRandom1* myrand = new TRandom1();
  for(int i=0;i<10;++i) {
    std::cout << myrand->Gaus(5,1) << std::endl;
  }
  return 0;
}

and I build and run it like:

g++ -c `root-config --cflags` test.cpp
g++ -o randoms `root-config --libs` test.o
./randoms

which works fine. The result if root-config --cflags is :

-pthread -m64 -I/usr/local/include/root

and result of root-config --libs

-L/usr/local/lib/root -lCore -lCint -lRIO -lNet -lHist -lGraf -lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix -lPhysics -lMathCore -lThread -pthread -lm -ldl -rdynamic

Now when in ecplise I change the C/C++ Build-> C++ compiler -> miscellanoeus to:

-c `root-config --cflags` -fmessage-length=0

and add root-config --libs to linker miscellanoeus. Now I can build the code . but when I am trying to run it I am getting:

/home/jd/C-workespace/CERN/Debug/CERN: error while loading shared libraries: libCore.so: cannot open shared object file: No such file or directory

What I am missing here?

Answer 1

您需要在“运行/调试”配置中设置LD_LIBRARY_PATH变量值。

Answer 2

This is a usual compilation error message telling you that it can't find ROOT libraries. Usually, ROOT comes with a setup.sh script in the ${ROOTSYS}/bin/ directory, which you need to source: it does the environment setup for you, and perhaps simply sourcing it will solve your problem.

I'm not familiar with Eclipse, but I think there must be a way in it to specify environment variables, eg $ROOTSYS.

After 1 minute of googling, I found a promising link:

Eclipse Environment variable setup