Question

我正在努力让OGDF努力查看它是否适合我的项目，但我在使用示例程序时遇到了问题。

#include <ogdf/basic/Graph.h>
#include <ogdf/basic/graph_generators.h>
#include <ogdf/layered/DfsAcyclicSubgraph.h>

using namespace ogdf;

int main()
{
    Graph G;
    randomSimpleGraph(G, 10, 20);
    DfsAcyclicSubgraph DAS;
    DAS.callAndReverse(G);
    G.writeGML("test.gml");

    return 0;
}

使用此命令：

$g++ -pthread -I ./OGDF/ -L ./OGDF/_release/ -lOGDF test2.cpp

但是我收到以下错误

/tmp/ccbpkfdt.o: In function `main':
test2.cpp:(.text+0x12): undefined reference to `ogdf::Graph::Graph()'
test2.cpp:(.text+0x2e): undefined reference to `ogdf::randomSimpleGraph(ogdf::Graph&, int, int)'
test2.cpp:(.text+0x4e): undefined reference to `ogdf::AcyclicSubgraphModule::callAndReverse(ogdf::Graph&)'
test2.cpp:(.text+0x62): undefined reference to `ogdf::Graph::writeGML(char const*) const'
test2.cpp:(.text+0x7f): undefined reference to `ogdf::Graph::~Graph()'
test2.cpp:(.text+0xa1): undefined reference to `ogdf::Graph::~Graph()'
/tmp/ccbpkfdt.o: In function `__static_initialization_and_destruction_0(int, int)':
test2.cpp:(.text+0xfb): undefined reference to `ogdf::Initialization::Initialization()'
test2.cpp:(.text+0x112): undefined reference to `ogdf::Initialization::~Initialization()'
/tmp/ccbpkfdt.o: In function `ogdf::DfsAcyclicSubgraph::DfsAcyclicSubgraph()':
test2.cpp:(.text._ZN4ogdf18DfsAcyclicSubgraphC2Ev[_ZN4ogdf18DfsAcyclicSubgraphC5Ev]+0x16): undefined reference to `vtable for ogdf::DfsAcyclicSubgraph'
/tmp/ccbpkfdt.o: In function `ogdf::DfsAcyclicSubgraph::~DfsAcyclicSubgraph()':
test2.cpp:(.text._ZN4ogdf18DfsAcyclicSubgraphD2Ev[_ZN4ogdf18DfsAcyclicSubgraphD5Ev]+0xb): undefined reference to `vtable for ogdf::DfsAcyclicSubgraph'
collect2: error: ld returned 1 exit status

我尝试使用来自OGDF的包含来编译hello world，我仍然得到：

undefined reference to `ogdf::Initialization::Initialization()'

我认为我没有正确连接或什么？

Answer 1

您必须非常小心在链接库时键入内容的顺序。请尝试在test2.cpp之前添加-lOGDF，如下所示：

g++ -pthread -I ./OGDF/ -L ./OGDF/_release/ test2.cpp -lOGDF

Answer 2

使用OGDF作为共享库时，必须使用-DOGDF_DLL构建程序。

见这里：http://www.ogdf.net/doku.php/tech:defines

gcc Linker和OGDF“对`ogdf :: Initialization :: Initialization（）'的未定义引用”

2 个答案: