GDAL未链接

问题描述

我正在尝试让我的程序在Windows上运行.它取决于GDAL，这是一个用于加载GIS数据的库.它可以在Linux和macOS上正常编译和链接.我将CMake与MinGW结合使用，并且遇到了如下错误:

I'm trying to get my program running on Windows. It depends on GDAL, a library for loading GIS data. It compiles and links fine on both Linux and macOS. I'm using CMake with MinGW and I'm running into linking errors like this:

undefined reference to `GDALRasterBand::RasterIO(GDALRWFlag, int, int, int, int, void*, int, int, GDALDataType, long, long, GDALRasterIOExtraArg*)'
CMakeFiles\Routes.dir/objects.a(elevation.cpp.obj): In function `ZN13ElevationData9calcStatsEv':
C:/Users/Logan/Documents/Routes/src/elevation/elevation.cpp:138: undefined reference to `GDALDataset::GetRasterXSize()'
C:/Users/Logan/Documents/Routes/src/elevation/elevation.cpp:139: undefined reference to `GDALDataset::GetRasterYSize()'
CMakeFiles\Routes.dir/objects.a(elevation.cpp.obj): In function `ZN13ElevationData17createOpenCLImageEv':
C:/Users/Logan/Documents/Routes/src/elevation/elevation.cpp:206: undefined reference to `GDALRasterBand::RasterIO(GDALRWFlag, int, int, int, int, void*, int, int, GDALDataType, long, long, GDALRasterIOExtraArg*)'

我使用VS2017编译了GDAL，并且已验证它已安装在我在CMake文件中指定的位置.这是CMakeLists.txt的相关部分:

I compiled GDAL with VS2017 and I've verified that it is installed where I am specifying in my CMake File. Here is the relevant portions of the CMakeLists.txt:

IF (WIN32)

  message(STATUS "Compiling for Windows")
  set(GDAL_LIBRARY "C:/warmerda/bld/lib/gdal_i.lib")
  set(GDAL_INCLUDE_DIR "C:/warmerda/bld/include/")

  find_package(OpenCL REQUIRED)
  include_directories(${OpenCL_INCLUDE_DIRS})

ELSE()

...

message(STATUS ${GDAL_LIBRARY})
target_link_libraries(Routes ${GDAL_LIBRARY} ${OpenCL_LIBRARIES})

我几乎从来没有在Windows上进行过开发，所以有点卡住了.我已经尝试过针对dll进行链接，但无济于事.有什么想法吗?

I almost never do development on Windows so I'm kind of stuck. I've tried linking against the dll as well with no avail. Any ideas?

推荐答案

显然，您正在尝试将用VC ++编译的库与对象链接您正在使用GCC(MinGW)进行编译的文件.那不行GCC和VC ++具有不同且不兼容的 ABI ，尤其是不同的名称修改协议.因此，MinGW在目标代码中发出的错误函数名称将与您的VC ++编译库导出的任何内容都不匹配.您将需要用MinGW构建GDAL库.

Apparently you're attempting to link a library you compiled with VC++ with objectfiles that you're compiling with GCC (MinGW). That doesn't work.GCC and VC++ have different and incompatible ABIs,and in particular different name mangling protocols.Hence the mangled function names emitted by MinGW in your object code willnot match any exported by your VC++ compiled library. You will need tobuild the GDAL library with MinGW.

这篇关于GDAL未链接的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！