Question

我为Windows构建了taglib个静态库，如下所示。得到了mingw，而不是VS.

查看git clone https://github.com/taglib/taglib.git git_taglib
使用来自cmake.org的Win32安装程序安装cmake
配置cmake -G "MinGW Makefiles" -DCMAKE_INSTALL_PREFIX=/C/taglib_package -DCMAKE_C_COMPILER=/C/MinGW4.4/bin/gcc.exe -DCMAKE_CXX_COMPILER=/C/MinGW4.4/bin/g++.exe -DENABLE_STATIC=ON -DENABLE_STATIC_RUNTIME=ON -DHAVE_ZLIB=0
编译mingw32-make.exe
将mingw32-make.exe install安装到C:\taglib_package

在我的Qt项目中，我正在使用这个库

的.pro

INCLUDEPATH+="C:/taglib_package/include/taglib"
QMAKE_LIBDIR += "C:/taglib_package/lib"
LIBS+= -lz -ltag

的.cpp

#include "fileref.h"
#include "taglib.h"
...
TagLib::FileRef f("Z:/Documents/sample.mp3");
TagLib::String artist = f.tag()->artist();
std::cout<< "Artist is " << artist << std::endl;

这会导致以下链接错误

release/main.o:main.cpp:(.text+0x93): undefined reference to `_imp___ZN6TagLib8FileNameC1EPKc'
release/main.o:main.cpp:(.text+0xb3): undefined reference to `_imp___ZN6TagLib7FileRefC1ENS_8FileNameEbNS_15AudioProperties9ReadStyleE'
release/main.o:main.cpp:(.text+0xdf): undefined reference to `_imp___ZNK6TagLib7FileRef3tagEv'
release/main.o:main.cpp:(.text+0x101): undefined reference to `_imp___ZN6TagLib6StringD1Ev'
release/main.o:main.cpp:(.text+0x10a): undefined reference to `_imp___ZN6TagLib7FileRefD1Ev'
release/main.o:main.cpp:(.text+0x210): undefined reference to `_imp___ZN6TagLib7FileRefD1Ev'
release/main.o:main.cpp:(.text+0x2bd): undefined reference to `_imp___ZN6TagLib6StringD1Ev'
collect2: ld returned 1 exit status
mingw32-make[1]: *** [release\taglib_experiment.exe] Error 1
mingw32-make: *** [release] Error 2
19:56:21: The process "C:\MinGW4.4\bin\mingw32-make.exe" exited with code 2.
Error while building/deploying project taglib_experiment (kit: Desktop)
When executing step 'Make'

代码在Mac上正常运行。所以我认为罪魁祸首是lib。我应该如何编译库以解决上述链接错误？

Answer 1

在编译您的代码

时使用-DTAGLIB_STATIC开关

在Windows上将错误与taglib链接

1 个答案: