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__declspec(dllexport) 导出符号解决链接失败问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
__declspec(dllexport) 导出符号解决链接失败问题特别注意：dllexport、dllimport导出、导入的方式仅针对dll动态库，而lib静态库无需任何申明，宏全部替换成空即可。error LNK2019: 无法解析的外部符号 "public: __thiscall CBtt::CBtt(void)" (??0CBtt@@Q...
Exporting functions from a DLL with dllexport
...our DLL project:
#ifdef LIBRARY_EXPORTS
# define LIBRARY_API __declspec(dllexport)
#else
# define LIBRARY_API __declspec(dllimport)
#endif
Then on a function that you want to be exported you use LIBRARY_API:
LIBRARY_API int GetCoolInteger();
In your library build project create a define LIBR...
What is __declspec and when do I need to use it?
...declspec(uuid), for exporting functions sans a DEF file you use __declspec(dllexport), etc. The full list is quite long.
– Seva Alekseyev
Feb 17 '10 at 21:49
...
How to solve the error LNK2019: unresolved external symbol - function?
...d that class itself as import/export.
#ifdef MYDLL_EXPORTS
#define DLLEXPORT __declspec(dllexport)
#else
#define DLLEXPORT __declspec(dllimport)
#endif
class DLLEXPORT Book // <--- this class must also be declared as export/import
{
public:
Book();
~Book();
int Wor...
Calling C/C++ from Python?
...
On Windows I've had to specify __declspec(dllexport) in my function signatures for Python to be able to see them. From the above example this would correspond to: extern "C" { __declspec(dllexport) Foo* Foo_new(){ return new Foo(); } __declspec(dllexport) v...
为什么编译好的libcurl静态lib用不了？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...2__)
# if defined(BUILDING_LIBCURL)
# define CURL_EXTERN __declspec(dllexport)
# else
# define CURL_EXTERN __declspec(dllimport)
# endif
#elif defined(BUILDING_LIBCURL) && defined(CURL_HIDDEN_SYMBOLS)
# define CURL_EXTERN CURL_EXTERN_SYMBOL
#else
# define CURL_EXTERN
#endif
...
What happens to global and static variables in a shared library when it is dynamically linked?
....e.:
#ifdef COMPILING_THE_DLL
#define MY_DLL_EXPORT extern "C" __declspec(dllexport)
#else
#define MY_DLL_EXPORT extern "C" __declspec(dllimport)
#endif
MY_DLL_EXPORT int my_global;
When you do that, the global variable is added to the list of exported symbols and can be linked like all the othe...
Difference between shared objects (.so), static libraries (.a), and DLL's (.so)?
...YI: g++ has __attribute__ syntax for selectively 'export' symbols: #define DLLEXPORT __attribute__ ((visibility("default"))) #define DLLLOCAL __attribute__ ((visibility("hidden")))
– Brian Cannard
Jul 10 '14 at 14:49
...
When do I use the PHP constant “PHP_EOL”?
...include "win95nt.h"
# ifdef PHP_EXPORTS
# define PHPAPI __declspec(dllexport)
# else
# define PHPAPI __declspec(dllimport)
# endif
# define PHP_DIR_SEPARATOR '\\'
# define PHP_EOL "\r\n"
#else
# if defined(__GNUC__) && __GNUC__ >= 4
# define PHPAPI __attribut...
What is the best way to create constants in Objective-C
...FOUNDATION)
#define FOUNDATION_EXPORT FOUNDATION_EXTERN __declspec(dllexport)
#else
#define FOUNDATION_EXPORT FOUNDATION_EXTERN __declspec(dllimport)
#endif
#define FOUNDATION_IMPORT FOUNDATION_EXTERN __declspec(dllimport)
#else
#define FOUNDATION_EXPORT FOUNDATION...