CGAL users discussion list

[runningterp <>]

I just started to learn CGAL. After downloading CGAL-4.9 into my Ubuntu14.04
on Virtualbox, I installed it following the
http://doc.cgal.org/latest/Manual/installation.html, then I wrote a.cpp with
nothing but only include <CGAL/convex_hull_2.h> . I then used the following
command to compile it:

g++ -frounding-math -lCGAL -lCGAL_Core a.cpp

but I got the following error message:

/tmp/ccbCdUjo.o: In function
`CGAL::Interval_nt<false>::Test_runtime_rounding_modes::Test_runtime_rounding_modes()':
a.cpp:(.text._ZN4CGAL11Interval_ntILb0EE27Test_runtime_rounding_modesC2Ev[_ZN4CGAL11Interval_ntILb0EE27Test_runtime_rounding_modesC5Ev]+0xb7):
undefined reference to `CGAL::assertion_fail(char const*, char const*, int,
char const*)'
a.cpp:(.text._ZN4CGAL11Interval_ntILb0EE27Test_runtime_rounding_modesC2Ev[_ZN4CGAL11Interval_ntILb0EE27Test_runtime_rounding_modesC5Ev]+0x161):
undefined reference to `CGAL::assertion_fail(char const*, char const*, int,
char const*)'
/tmp/ccbCdUjo.o: In function
`CGAL::Interval_nt<true>::Test_runtime_rounding_modes::Test_runtime_rounding_modes()':
a.cpp:(.text._ZN4CGAL11Interval_ntILb1EE27Test_runtime_rounding_modesC2Ev[_ZN4CGAL11Interval_ntILb1EE27Test_runtime_rounding_modesC5Ev]+0xb7):
undefined reference to `CGAL::assertion_fail(char const*, char const*, int,
char const*)'
a.cpp:(.text._ZN4CGAL11Interval_ntILb1EE27Test_runtime_rounding_modesC2Ev[_ZN4CGAL11Interval_ntILb1EE27Test_runtime_rounding_modesC5Ev]+0x161):
undefined reference to `CGAL::assertion_fail(char const*, char const*, int,
char const*)'
collect2: error: ld returned 1 exit status

It is weird since the error like CGAL::assertion_fail should result from
forgetting -lCGAL, but I did -lCGAL and I checked that my libCGAL.so is in
the directory /usr/local/lib/x86_64-linux-gnu . I also tried to specify the
path by using:

g++ -I /home/osboxes/CGAL-4.9/include -lCGAL -L /home/osboxes/CGAL-4.9/lib/
a.cpp

but this doesn't help neither. So I am totally lost, and I really hope
someone could help me to resolve this problem.
Thank you very much!



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