mirror of
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56 lines
2.1 KiB
Plaintext
56 lines
2.1 KiB
Plaintext
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/* Version info for libpqxx.
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*
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* DO NOT INCLUDE THIS FILE DIRECTLY; include pqxx/version instead.
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*
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* Copyright (c) 2000-2022, Jeroen T. Vermeulen.
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*
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* See COPYING for copyright license. If you did not receive a file called
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* COPYING with this source code, please notify the distributor of this
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* mistake, or contact the author.
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*/
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#ifndef PQXX_H_VERSION
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#if !defined(PQXX_HEADER_PRE)
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#error "Include libpqxx headers as <pqxx/header>, not <pqxx/header.hxx>."
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#endif
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/// Full libpqxx version string.
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# define PQXX_VERSION "@PQXXVERSION@"
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/// Library ABI version.
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# define PQXX_ABI "@PQXX_ABI@"
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/// Major version number.
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# define PQXX_VERSION_MAJOR @PQXX_MAJOR@
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/// Minor version number.
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# define PQXX_VERSION_MINOR @PQXX_MINOR@
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# define PQXX_VERSION_CHECK check_pqxx_version_@PQXX_MAJOR@_@PQXX_MINOR@
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namespace pqxx::internal
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{
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/// Library version check stub.
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/** Helps detect version mismatches between libpqxx headers and the libpqxx
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* library binary.
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*
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* Sometimes users run into trouble linking their code against libpqxx because
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* they build their own libpqxx, but the system also has a different version
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* installed. The declarations in the headers against which they compile their
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* code will differ from the ones used to build the libpqxx version they're
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* using, leading to confusing link errors. The solution is to generate a link
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* error when the libpqxx binary is not the same version as the libpqxx headers
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* used to compile the code.
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*
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* This function's definition is in the libpqxx binary, so it's based on the
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* version as found in the binary. The headers contain a call to the function,
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* whose name contains the libpqxx version as found in the headers. (The
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* library build process will use its own local headers even if another version
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* of the headers is installed on the system.)
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*
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* If the libpqxx binary was compiled for a different version than the user's
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* code, linking will fail with an error: `check_pqxx_version_*_*` will not
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* exist for the given version number.
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*/
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PQXX_LIBEXPORT int PQXX_VERSION_CHECK() noexcept;
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} // namespace pqxx::internal
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#endif
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