Member Avatar for guest7

Hi,

I have a c++ program which uses the api's of a utlitiy. As per the document I have to include the path of binaries for the utility in my code. I am not sure why that is required and how to inlcude that. Any help is appreciated
Thanks

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The vendor wording "include the path to binaries" is vague but not meaningless. was right to question it; was right to ask which compiler. In the g++ world this phrase can mean two different things: (A) tell the compiler/linker where to find headers and libraries at build time, or (B) tell the dynamic loader where to find shared libraries at run time. Fixes differ depending on which stage is failing.

Common checks and fixes

  • Build-time problems (missing headers or undefined references): ensure the header directory is on the compiler include path and the library directory is on the link path, then link the vendor library by its name (the vendor library file is usually named lib<name>.so or lib<name>.a and is referenced as -l<name>). For C APIs used from C++ code, the header needs extern "C" linkage to avoid name-mangling:
extern "C" {
#include "vendor_api.h"
}
  • Run-time problems (executable starts but reports "libXYZ.so: cannot open shared object file"): the dynamic loader must find the .so files. Typical solutions are setting the LD_LIBRARY_PATH for testing, embedding an rpath into the binary at link time, or installing the libs under a system library directory and running ldconfig. Each has tradeoffs for portability and security.

Diagnostics to include when troubleshooting

  • Exact compiler/linker error text (header not found vs undefined reference vs runtime missing .so).
  • Output of tools that show dependencies and formats (for example, whether the .so is 32-bit vs 64-bit).
  • Whether the vendor API is a library or an external executable (calling an external program requires its path or adding it to PATH).

Checklist: confirm which error stage occurs, verify header names and include paths, link with the correct library name and ordering, check C vs C++ linkage, and confirm architecture compatibility.

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Member Avatar for ArkM

I have a c++ program which uses the api's of a utlitiy. As per the document I have to include the path of binaries for the utility in my code. I am not sure why that is required and how to inlcude that. Any help is appreciated
Thanks

Are you sure that you have to include the path of binaries for the utility in your code? Sorry, but it sounds like abracadabra...

Member Avatar for vmanes

Perhaps you mean you have to include the path to the binaries/libs/includes for your compiler?

We'll need to know what compiler/IDE you're using to give you good instruction.

Member Avatar for guest7

Perhaps you mean you have to include the path to the binaries/libs/includes for your compiler?

We'll need to know what compiler/IDE you're using to give you good instruction.

Hi,

I have a simple c++ program. I am using the API's of the utility in my C++ program. For that i am compiling the program with the option:

g++ prog1.cpp -I../include -L../lib

However i am getting lots of error during compilation. The instruction for the utility says to include the path to binaries while compiling but does not tell how to do so.

Thanks

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