Hello, I want to give an update of my problem in case other people face it in the future. I solved it only partially. Here is what I did, after installing on Virtualbox a clean Ubuntu Gnome 13.10 64bits system, and downloading the openbabel source (I tried with 2.3.1 and 2.3.2 the same procedure):
tar zxf openbabel-2.3.2.tar.gz sudo apt-get install g++ cmake wx-common wx2.8-headers libwxbase2.8-dev libxml2-dev zlib1g-dev libeigen2-dev libcairo2-dev python-dev libperl-dev mkdir Programs mkdir Programs/Openbabel_2.3.2 cd openbabel-2.3.2/ cmake -DCMAKE_INSTALL_PREFIX=/home/nicolas/Programs/Openbabel_2.3.2 -DBUILD_GUI=OFF make make install make test The "make test" output was: "100% tests passed, 0 tests failed out of 58". I tried "obabel Aspirin.smi -O Aspirin.png --gen2D" (where Aspirin.smi is a file with only "O=C(Oc1ccccc1C(=O)O)C Aspirin") and I get the good png scheme. So the installation of openbabel was successfull and is not the problem. I copied the Quickstart example found here http://openbabel.org/docs/current/UseTheLibrary/CppExamples.html in an example.cpp file. 1) I then created a "Makefile" file with : ************ CC = g++ CFLAGS = -c -I /home/nicolas/Programs/Openbabel_2.3.1/include/openbabel-2.0 LDFLAGS = -lopenbabel -L /home/nicolas/Programs/Openbabel_2.3.1/lib all: example example: example.o $(CC) $(LDFLAGS) example.o -o example example.o: example.cpp $(CC) $(CFLAGS) $(LDFLAGS) example.cpp clean: rm -rf example.o example ************ After typing "make", the compilation fails with the error previously reported : /tmp/cc2kfqde.o: In function `main': example.cpp:(.text+0x120): undefined reference to `OpenBabel::OBConversion::OBConversion(std::istream*, std::ostream*)' example.cpp:(.text+0x139): undefined reference to `OpenBabel::OBConversion::SetInAndOutFormats(char const*, char const*)' example.cpp:(.text+0x165): undefined reference to `OpenBabel::OBConversion::Convert()' example.cpp:(.text+0x19e): undefined reference to `OpenBabel::OBConversion::~OBConversion()' example.cpp:(.text+0x1e1): undefined reference to `OpenBabel::OBConversion::~OBConversion()' collect2: error: ld returned 1 exit status 2) I created a "CMakeLists.txt" file with: ************ cmake_minimum_required(VERSION 2.6) add_executable(example example.cpp) target_link_libraries(example /home/nicolas/Programs/Openbabel_2.3.1/lib/libopenbabel.so) include_directories(/home/nicolas/Programs/Openbabel_2.3.1/include/openbabel-2.0) ************ After typing "cmake" then "make", the file compiles. So I can compile and use the openbabel library for my project. However, I don't understant why it doesn't work directly with Makefile (and I would prefer use Makefile instead of cmake). Does anyone have an idea of why, and how to modify the Makefile to make it work? Thank you Nicolas -- View this message in context: http://forums.openbabel.org/Problem-for-compiling-the-example-files-tp4656837p4656869.html Sent from the General discussion mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Shape the Mobile Experience: Free Subscription Software experts and developers: Be at the forefront of tech innovation. Intel(R) Software Adrenaline delivers strategic insight and game-changing conversations that shape the rapidly evolving mobile landscape. Sign up now. http://pubads.g.doubleclick.net/gampad/clk?id=63431311&iu=/4140/ostg.clktrk _______________________________________________ OpenBabel-discuss mailing list OpenBabel-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openbabel-discuss
