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58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/* e_os2.h */
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#ifndef HEADER_E_OS2_H
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#define HEADER_E_OS2_H
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#include <openssl/opensslconf.h> /* OPENSSL_UNISTD */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef MSDOS
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# define OPENSSL_UNISTD_IO <io.h>
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# define OPENSSL_DECLARE_EXIT extern void exit(int);
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#else
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# define OPENSSL_UNISTD_IO OPENSSL_UNISTD
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# define OPENSSL_DECLARE_EXIT /* declared in unistd.h */
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#endif
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/* Definitions of OPENSSL_GLOBAL and OPENSSL_EXTERN, to define and declare
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certain global symbols that, with some compilers under VMS, have to be
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defined and declared explicitely with globaldef and globalref.
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Definitions of OPENSSL_EXPORT and OPENSSL_IMPORT, to define and declare
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DLL exports and imports for compilers under Win32. These are a little
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more complicated to use. Basically, for any library that exports some
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global variables, the following code must be present in the header file
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that declares them, before OPENSSL_EXTERN is used:
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#ifdef SOME_BUILD_FLAG_MACRO
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# undef OPENSSL_EXTERN
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# define OPENSSL_EXTERN OPENSSL_EXPORT
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#endif
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The default is to have OPENSSL_EXPORT, OPENSSL_IMPORT and OPENSSL_GLOBAL
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have some generally sensible values, and for OPENSSL_EXTERN to have the
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value OPENSSL_IMPORT.
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*/
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#if defined(VMS) && !defined(__DECC)
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# define OPENSSL_EXPORT globalref
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# define OPENSSL_IMPORT globalref
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# define OPENSSL_GLOBAL globaldef
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#elif defined(WINDOWS)
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# define OPENSSL_EXPORT extern _declspec(dllexport)
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# define OPENSSL_IMPORT extern _declspec(dllimport)
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# define OPENSSL_GLOBAL
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#else
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# define OPENSSL_EXPORT extern
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# define OPENSSL_IMPORT extern
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# define OPENSSL_GLOBAL
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#endif
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#define OPENSSL_EXTERN OPENSSL_IMPORT
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#ifdef __cplusplus
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}
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#endif
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#endif
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