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我在關注the instructions，它告訴我要下載msgpack 0.5.4 for C & C++。爲C和C++安裝MessagePack實現時的鏈接器錯誤
On Windows, download source package from here and extract it. Open msgpack_vc8.vcproj or msgpack_vc2008 file and build it using batch build. It builds libraries in lib/ folder and header files in include/ folder.
You can build using command line as follows:
vcbuild msgpack_vc2008.vcproj
dir lib % DLL files are here
dir include % header files are here
vcbuild msgpack_vc2008.vcproj已取代的MSBuild msgpack_vc8.vcxproj。我使用Visual Studio 2012來轉換項目以使其具有正確的.vcxproj。在Visual Studio中批量構建並運行MSBuild會得到相同的結果，因此我將從這一點爲他們講述兩者。
項目轉換後，我注意到項目設置爲輸出到.lib而不是.dll，所以我改變了該設置以符合我的需求。編譯時有一個小錯誤：
...\microsoft visual studio 11.0\vc\include\stdint.h(8): error C2371: 'int8_t' : redefinition; different basic types
...msgpack-0.5.4\src\msgpack\sysdep.h(23) : see declaration of 'int8_t'
所以我改了行
typedef __int8 int8_t;
到
typedef signed __int8 int8_t;
這解決了小問題。但是，我們到達現在的位置。這個連接錯誤：
objectc.obj : error LNK2019: unresolved external symbol [email protected] referenced in function _msgpack_pack_array
unpack.obj : error LNK2001: unresolved external symbol [email protected]
objectc.obj : error LNK2019: unresolved external symbol [email protected] referenced in function _msgpack_pack_array
unpack.obj : error LNK2001: unresolved external symbol [email protected]
...\msgpack-0.5.4\Debug\MessagePack.dll : fatal error LNK1120: 2 unresolved externals
我搜索了這個錯誤的部分：
sysdep.h中：
#define _msgpack_be16(x) ntohs(x)
#define _msgpack_be32(x) ntohl(x)
在object.c：
case MSGPACK_OBJECT_ARRAY:
{
int ret = msgpack_pack_array(pk, d.via.array.size);
if(ret < 0) { return ret; }
msgpack_object* o = d.via.array.ptr;
msgpack_object* const oend = d.via.array.ptr + d.via.array.size;
for(; o != oend; ++o) {
ret = msgpack_pack_object(pk, *o);
if(ret < 0) { return ret; }
}
在unpack.c：
static inline int template_callback_array(unpack_user* u, unsigned int n, msgpack_object* o)
{
o->type = MSGPACK_OBJECT_ARRAY;
o->via.array.size = 0;
o->via.array.ptr = (msgpack_object*)msgpack_zone_malloc(u->z, n*sizeof(msgpack_object));
if(o->via.array.ptr == NULL) { return -1; }
return 0;
}
這就是我所知道的。如果還有另一種如何獲取.dll的方法，那也是有幫助的。先謝謝你。 :)