undefined reference to typeinfo - C++ error message There are some compiler and loader error messages that shout obviously as to their cause, but there are others that simply don't give the new user much of an indication as to what's really wrong. An…

编译成功了,链接的时候出现了这个报错 产生”undefined reference to `typeinfo for xxx’“最常见的原因就是基类的虚函数未实现了. 由于C++类的实现可以分布在多个源文件中,所以生成目标文件时,基类的虚函数没有定义是不会报错的. 但是链接成可执行文件时,需要将虚函数的信息放进typeinfo中,这个时候虚函数未实现就会引发这个错误. ．．．．．实在不行,改成纯虚函数就好了．…

main.cpp:(.text.startup+0x22): undefined reference to `QApplication::QApplication(int&, char**, int)' moc_CalculatorUI.o:(.data.rel.ro._ZTV12CalculatorUI[_ZTV12CalculatorUI]+0x1a0): undefined reference to `QWidget::inputMethodQuery(Qt::InputMethodQue…

原因:工程使用了系统库libstagefright.so,而该库是Android系统用no-rtti方式编译出来的,因此我们的工程也必须要用no-rtti方式编译. 解决方法:在Application.mk中,将 APP_CPPFLAGS := -frtti 改为 APP_CPPFLAGS := -fno-rtti(Android默认使用-frtti模式编译,必须强制改变)…

[转]undefined reference to vtable 原因与解决办法 最近在写一套基础类库用于SG解包blob字段统计,在写完了所有程序编译时遇到一个郁闷无比的错误: MailBox.o(.text+0x124): In function `CMailBox::CMailBox[not-in-charge](CMmogAnalyseStatManager*)': ../src/MailBox.cpp:27: undefined reference to `CSgAnalyseStat…

问题1:(.text+0x12): undefined reference to `rpl_fprintf'解决办法:在yacc前面添加%{#undef yyerrorvoid yyerror (char *s);%}在第三部分添加:void yyerror (char *s) { fprintf ("%s\n", s);}可以解决问题,但是不能错误提示啦!参看下面的说明之后就可以啦 5: Working around a bison bug Normally, we'd rely o…

今天在ubuntu系统下进行程序调试的时候出现以下错误信息: [ %] Linking CXX executable ../test_coco /usr/local/lib/libgsl.so: undefined reference to `cblas_ztrsv' /usr/local/lib/libgsl.so: undefined reference to `cblas_scasum' /usr/local/lib/libgsl.so: undefined reference to `c…

g++ -O0 -g3 -I. -Ithird/json -Ithird/core/include -Ithird/vite/include -Ithird/openfst-1.2.10/src/include -o a.out test/test.c test/build/testbuild.o test/train/test_lm2.o test/tool/load_two/load_two.o test/tool/multi_thread/test-multi.o test/tool/me…

[ 31%] Built target boost_numpy[ 36%] Building CXX object libs/numpy/example/CMakeFiles/dtype.dir/dtype.cpp.oLinking CXX executable ../../../bin/dtypeCMakeFiles/dtype.dir/dtype.cpp.o: In function `boost::python::converter::arg_to_python<int>::arg_to…

刚才编译一个pthread的单文件程序, 使用的命令行是: gcc -o thread1 -lpthread thread1.c 结果报错: $ gcc -o thread1 -lpthread thread1.c /tmp/ccNqs6Bh.o: In function `main': thread1.c:(.text+0x49): undefined reference to `pthread_create' thread1.c:(.text+0x5f): undefined referen…