c++ - 依赖于 VS2010 的静态编译库时的 undefined symbol

Question

我在 Visual Stuio 2012 Express 中有一个项目，我想包含一个静态库，使用 MinGW 的 gcc 编译。我将库包含在项目的项目选项中。

不工作。接下来我尝试使用模型最小库。

测试.c

int foo(){return 5;}

指令:

gcc -c test.c
ar rcs libtest.a test.o

对象转储:

C:\ARM_Workpsace - Legacy\HardwareEmulation\build>objdump -t test.o

test.o:     file format pe-i386

SYMBOL TABLE:
[  0](sec -2)(fl 0x00)(ty   0)(scl 103) (nx 1) 0x00000000 test.c
File
[  2](sec  1)(fl 0x00)(ty  20)(scl   2) (nx 1) 0x00000000 _testfun2
AUX tagndx 0 ttlsiz 0x0 lnnos 0 next 0
[  4](sec  1)(fl 0x00)(ty   0)(scl   3) (nx 1) 0x00000000 .text
AUX scnlen 0xa nreloc 0 nlnno 0
[  6](sec  2)(fl 0x00)(ty   0)(scl   3) (nx 1) 0x00000000 .data
AUX scnlen 0x0 nreloc 0 nlnno 0
[  8](sec  3)(fl 0x00)(ty   0)(scl   3) (nx 1) 0x00000000 .bss
AUX scnlen 0x0 nreloc 0 nlnno 0
[ 10](sec  4)(fl 0x00)(ty   0)(scl   3) (nx 1) 0x00000000 .rdata$zzz
AUX scnlen 0x11 nreloc 0 nlnno 0
[ 12](sec  5)(fl 0x00)(ty   0)(scl   3) (nx 1) 0x00000000 .eh_frame
AUX scnlen 0x38 nreloc 1 nlnno 0

但是VS2010还是报同样的错误:

1>------ Rebuild All started: Project: ReverbTwo, Configuration: Debug Win32 ------
1>  ReverbTwo.cpp
1>  RackAFXDLL.cpp
1>  pluginobjects.cpp
1>  plugin.cpp
1>  Generating Code...
1>plugin.obj : warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/INCREMENTAL:NO' specification
1>     Creating library C:\Users\user\AppData\Roaming\RackAFX\PlugIns\ReverbTwo.lib and object C:\Users\user\AppData\Roaming\RackAFX\PlugIns\ReverbTwo.exp
1>ReverbTwo.obj : error LNK2019: unresolved external symbol "int __cdecl testfun2(void)" (?testfun2@@YAHXZ) referenced in function "public: __thiscall CReverbTwo::CReverbTwo(void)" (??0CReverbTwo@@QAE@XZ)
1>C:\Users\user\AppData\Roaming\RackAFX\PlugIns\ReverbTwo.dll : fatal error LNK1120: 1 unresolved externals
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========

Answer 1

MinGW 有关于在 visual studio 项目中使用 MinGW 库的说明:

http://www.mingw.org/wiki/MSVC_and_MinGW_DLLs

不同编译器提供的库不一定兼容的原因，参见:

http://www.mingw.org/wiki/Interoperability_of_Libraries_Created_by_Different_Compiler_Brands