把庫檔案從msvc格式（.lib）轉化成MinGW格式（.a）的方法

 
把庫檔案從msvc格式（.lib）轉化成MinGW格式（.a）的方法。
收藏

使用MinGW附帶的工具reimp.exe，該工具一般在MinGW/bin目錄下，其readme文檔在MinGW/doc/reimp目錄下，

方法很簡單，比如：

C:/CodeBlocks/MinGW/lib/dx9>reimp d3d8.lib

就會產生一個“libd3d8.a”檔案，這個檔案就可以讓基於MinGW的編譯器連結使用了。

 

我用這個方法成功的把DirectX9c的.lib庫轉化成了.a庫，並在CodeBlocks下編譯成功了其產生的dx項目，

但是有三個.lib檔案無法通過這個方法轉換：DxErr.lib、DxErr8.lib、DxErr9.lib，估計其他方法，

但似乎沒有他們也不影響DX9c庫的使用，先這樣，需要的話再想辦法吧。

 

還有一個辦法，來源是：

http://topic.csdn.net/t/20040721/11/3195357.htm

不知道是否可行，可以試試。

    GCC和VC都使用COFF格式，所以VC中的.obj   .lib與gcc用的.o  
.a是一樣的（在WINDOWS下），只是副檔名不一樣，通常你只要改一下名稱就OK啦！不過有些庫不行，因為庫中的代碼可能會用到一些編譯器專有的特
性，用VC做的.lib可能在gcc下沒法通過編譯（缺少符號），反之亦然。

 

 

reimp的readme文檔內容如下：

 

README for reimp
================

* Overview

`reimp' is a tool to convert Microsoft's new-style (short) import
libraries to import libraries for win32 ports of GNU tools (mingw32,
cygwin).

`reimp' reads an MS import library and writes all imports to the
corresponding .DEF file(s) that it feeds to `dlltool' that creates the
import library.

* Invocation

Usage: reimp [options] IMPLIB

Options:
  -s, --dump-symbols      dump symbols to stdout
  -d, --only-def          only create .def files
  -c, --keep-case         keep case in lib*.a file names
  --dlltool <name>        use <name> for dlltool
  --as <name>             use <name> for assembler

The `--dump-symbols' option makes `reimp' use a quick method for
finding imported symbols and sending the names of found symbols to
stdout. If the input library contain non-imported symbols they will be
listed as well. The output symbols will have all decoration preserved
(i.e '_' will prefix most symbols), so if you feed it to dlltool you
should strip leading underscores. For example

        echo EXPORTS > imp.def
        reimp imp.lib | sed 's/_//' >> imp.def
        dlltool -k --def imp.def --output-lib libimp.a --dllname imp.dll

The `--only-def' option makes `reimp' stop after generating the .DEF
file(s).

By default `reimp' converts all output library names to lower-case. By
using the `keep-case' option `reimp' will use exactly the case of the
DLL imported from when creating an import library. KERNEL32.dll will
generate libKERNEL32.a and not libkernel32.a as it would be default.

* Notes on mixed libraries

If an input library contain regular objects (non-imports, i.e code and
data) `reimp' will write out those objects unless you specify one of
the `--only-def' and `--dump-symbols' options. You probably want to
include those objects as well in the generated library. `reimp'
doesn't do that automatically so you have to do it manually using
`ar', like this

        reimp imp.lib          # this generates several .o or .obj files.
        ar rcs libimp.a *.obj  # add them to library

* Contact information

URL: http://www.acc.umu.se/~anorland/gnu-win32/

Anders Norlander <anorland@hem2.passagen.se
>