Getting errors while building Linux

[Anonymous]

I followed the steps of installing with cmake. Here is what I did steps by steps

tar xfpz GeographicLib-1.51.tar.gz
cd GeographicLib-1.51
mkdir BUILD
 cd BUILD
 cmake ..
 make
 make test
 make install

The library is installed at usr/local/include, lib and bin

The issue arrises when I try to build the example

g++ -o example-Geodesic example-Geodesic.cpp

The error message I get

/tmp/cc6F2Etx.o: In function `main':
example-Geodesic.cpp:(.text+0x40): undefined reference to `GeographicLib::Geodesic::Geodesic(double, double)'
/tmp/cc6F2Etx.o: In function `GeographicLib::Geodesic::Direct(double, double, double, double, double&, double&) const':
example-Geodesic.cpp:(.text._ZNK13GeographicLib8Geodesic6DirectEddddRdS1_[_ZNK13GeographicLib8Geodesic6DirectEddddRdS1_]+0xa3): undefined reference to `GeographicLib::Geodesic::GenDirect(double, double, double, bool, double, unsigned int, double&, double&, double&, double&, double&, double&, double&, double&) const'
/tmp/cc6F2Etx.o: In function `GeographicLib::Geodesic::Inverse(double, double, double, double, double&) const':
example-Geodesic.cpp:(.text._ZNK13GeographicLib8Geodesic7InverseEddddRd[_ZNK13GeographicLib8Geodesic7InverseEddddRd]+0x8b): undefined reference to `GeographicLib::Geodesic::GenInverse(double, double, double, double, unsigned int, double&, double&, double&, double&, double&, double&, double&) const'
collect2: error: ld returned 1 exit status

Specifying linker did not solve the problem

g++ -o example-Geodesic -l Geographic example-Geodesic.cppclear

There wasn't any issues with make and all the test passed.

Please let me know what step I am missing.

Thanks

[Charles Karney]

The documentation page https://geographiclib.sourceforge.io/html/start.html says that if you build GeographicLib as a shared library (which you did), then you have to specify the location of shared libraries at runtime with, for example,

g++ -o prog prog.cpp -lGeographic -Wl,-rpath=/usr/local/lib

(You can also build these programs using make exampleprograms in the cmake build directory.)

[Anonymous]

Thank you.