45 lines
1.4 KiB
Text
45 lines
1.4 KiB
Text
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Adding new libraries
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--------------------
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When adding a new sub-library to OpenSSL, assign it a library number
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ERR_LIB_XXX, define a macro XXXerr() (both in err.h), add its
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name to ERR_str_libraries[] (in crypto/err/err.c), and add
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ERR_load_XXX_strings() to the ERR_load_crypto_strings() function
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(in crypto/err/err_all.c). Finally, add an entry:
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L XXX xxx.h xxx_err.c
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to crypto/err/openssl.ec, and add xxx_err.c to the Makefile.
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Running make errors will then generate a file xxx_err.c, and
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add all error codes used in the library to xxx.h.
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Additionally the library include file must have a certain form.
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Typically it will initially look like this:
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#ifndef HEADER_XXX_H
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#define HEADER_XXX_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Include files */
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#include <openssl/bio.h>
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#include <openssl/x509.h>
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/* Macros, structures and function prototypes */
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/* BEGIN ERROR CODES */
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The BEGIN ERROR CODES sequence is used by the error code
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generation script as the point to place new error codes, any text
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after this point will be overwritten when make errors is run.
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The closing #endif etc will be automatically added by the script.
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The generated C error code file xxx_err.c will load the header
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files stdio.h, openssl/err.h and openssl/xxx.h so the
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header file must load any additional header files containing any
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definitions it uses.
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