lib-export-api.h

//
//  lib-export-api.h
//  SoftMeter library
//
//  Copyright © 2020 StarMessage software. All rights reserved.
//	https://www.starmessagesoftware.com/softmeter
//


/*
#define USE_STDCALL_CONVENTION
#if defined( USE_STDCALL_CONVENTION)  && defined( _WIN32 )
	#define DLL_CALLING_CONVENTION  __stdcall
#else
	// this remanins as a blank define, needed for the MAC
	#define DLL_CALLING_CONVENTION  
#endif
*/


#ifdef __cplusplus
	// extern "C" means that the function behind the descriptor 
	// should be compiled with the C standard naming mangling.
	#define C_EXPORT extern "C" 
	// #define C_EXPORT
#else
	#define C_EXPORT 
#endif


#ifdef _WIN32

	// info about _WINDLL
	// https://stackoverflow.com/questions/14052944/compile-check-if-compiling-as-static-library
	#ifndef _WINDLL	// do not export the functions if this compilation is not for a DLL

		#define EXPORT_API	
		#define CALL_CONV   

	#else
		// __declspec(dllexport) adds the export directive to the object file so you do not need to use a .def file. 
		// When exporting functions with either method, make sure to use the __stdcall calling convention. 
		// To export functions, the __declspec(dllexport) keyword must appear to the left of the calling-convention keyword, 
		// if a keyword is specified. For example:
		//   __declspec(dllexport) void __cdecl Function1(void);  
		//   or
		//   __declspec(dllexport) void __stdcall Function1(void);  
		// __declspec(dllexport) cannot be applied to a function with the __clrcall calling convention.

		#define EXPORT_API		C_EXPORT __declspec(dllexport)
		#define CALL_CONV   __stdcall
	#endif

#else
    #define CALL_CONV
	#define EXPORT_API		C_EXPORT __attribute__((visibility("default")))

#endif