Moved version number macros higher in libisofs/libisofs.h
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@ -61,6 +61,88 @@
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#include <stdlib.h>
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#include <stdlib.h>
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/**
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* The following two functions and three macros are utilities to help ensuring
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* version match of application, compile time header, and runtime library.
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*/
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/**
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* These three release version numbers tell the revision of this header file
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* and of the API it describes. They are memorized by applications at
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* compile time.
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* They must show the same values as these symbols in ./configure.ac
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* LIBISOFS_MAJOR_VERSION=...
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* LIBISOFS_MINOR_VERSION=...
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* LIBISOFS_MICRO_VERSION=...
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* Note to anybody who does own work inside libisofs:
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* Any change of configure.ac or libisofs.h has to keep up this equality !
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*
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* Before usage of these macros on your code, please read the usage discussion
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* below.
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*
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* @since 0.6.2
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*/
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#define iso_lib_header_version_major 1
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#define iso_lib_header_version_minor 1
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#define iso_lib_header_version_micro 5
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/**
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* Get version of the libisofs library at runtime.
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* NOTE: This function may be called before iso_init().
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*
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* @since 0.6.2
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*/
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void iso_lib_version(int *major, int *minor, int *micro);
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/**
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* Check at runtime if the library is ABI compatible with the given version.
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* NOTE: This function may be called before iso_init().
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*
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* @return
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* 1 lib is compatible, 0 is not.
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*
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* @since 0.6.2
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*/
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int iso_lib_is_compatible(int major, int minor, int micro);
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/**
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* Usage discussion:
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*
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* Some developers of the libburnia project have differing opinions how to
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* ensure the compatibility of libaries and applications.
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*
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* It is about whether to use at compile time and at runtime the version
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* numbers provided here. Thomas Schmitt advises to use them. Vreixo Formoso
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* advises to use other means.
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*
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* At compile time:
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*
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* Vreixo Formoso advises to leave proper version matching to properly
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* programmed checks in the the application's build system, which will
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* eventually refuse compilation.
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*
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* Thomas Schmitt advises to use the macros defined here for comparison with
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* the application's requirements of library revisions and to eventually
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* break compilation.
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*
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* Both advises are combinable. I.e. be master of your build system and have
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* #if checks in the source code of your application, nevertheless.
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*
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* At runtime (via iso_lib_is_compatible()):
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*
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* Vreixo Formoso advises to compare the application's requirements of
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* library revisions with the runtime library. This is to allow runtime
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* libraries which are young enough for the application but too old for
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* the lib*.h files seen at compile time.
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*
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* Thomas Schmitt advises to compare the header revisions defined here with
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* the runtime library. This is to enforce a strictly monotonous chain of
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* revisions from app to header to library, at the cost of excluding some older
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* libraries.
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*
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* These two advises are mutually exclusive.
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*/
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struct burn_source;
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struct burn_source;
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/**
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/**
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@ -1188,89 +1270,6 @@ int iso_image_new(const char *name, IsoImage **image);
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void iso_image_set_ignore_aclea(IsoImage *image, int what);
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void iso_image_set_ignore_aclea(IsoImage *image, int what);
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/**
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* The following two functions three macros are utilities to help ensuring
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* version match of application, compile time header, and runtime library.
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*/
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/**
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* Get version of the libisofs library at runtime.
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* NOTE: This function may be called before iso_init().
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*
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* @since 0.6.2
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*/
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void iso_lib_version(int *major, int *minor, int *micro);
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/**
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* Check at runtime if the library is ABI compatible with the given version.
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* NOTE: This function may be called before iso_init().
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*
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* @return
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* 1 lib is compatible, 0 is not.
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*
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* @since 0.6.2
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*/
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int iso_lib_is_compatible(int major, int minor, int micro);
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/**
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* These three release version numbers tell the revision of this header file
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* and of the API it describes. They are memorized by applications at
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* compile time.
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* They must show the same values as these symbols in ./configure.ac
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* LIBISOFS_MAJOR_VERSION=...
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* LIBISOFS_MINOR_VERSION=...
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* LIBISOFS_MICRO_VERSION=...
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* Note to anybody who does own work inside libisofs:
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* Any change of configure.ac or libisofs.h has to keep up this equality !
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*
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* Before usage of these macros on your code, please read the usage discussion
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* below.
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*
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* @since 0.6.2
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*/
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#define iso_lib_header_version_major 1
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#define iso_lib_header_version_minor 1
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#define iso_lib_header_version_micro 5
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/**
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* Usage discussion:
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*
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* Some developers of the libburnia project have differing opinions how to
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* ensure the compatibility of libaries and applications.
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*
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* It is about whether to use at compile time and at runtime the version
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* numbers provided here. Thomas Schmitt advises to use them. Vreixo Formoso
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* advises to use other means.
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*
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* At compile time:
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*
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* Vreixo Formoso advises to leave proper version matching to properly
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* programmed checks in the the application's build system, which will
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* eventually refuse compilation.
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*
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* Thomas Schmitt advises to use the macros defined here for comparison with
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* the application's requirements of library revisions and to eventually
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* break compilation.
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*
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* Both advises are combinable. I.e. be master of your build system and have
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* #if checks in the source code of your application, nevertheless.
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*
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* At runtime (via iso_lib_is_compatible()):
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*
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* Vreixo Formoso advises to compare the application's requirements of
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* library revisions with the runtime library. This is to allow runtime
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* libraries which are young enough for the application but too old for
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* the lib*.h files seen at compile time.
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*
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* Thomas Schmitt advises to compare the header revisions defined here with
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* the runtime library. This is to enforce a strictly monotonous chain of
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* revisions from app to header to library, at the cost of excluding some older
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* libraries.
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*
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* These two advises are mutually exclusive.
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*/
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/**
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/**
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* Creates an IsoWriteOpts for writing an image. You should set the options
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* Creates an IsoWriteOpts for writing an image. You should set the options
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* desired with the correspondent setters.
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* desired with the correspondent setters.
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