platform.hpp File Reference

Provides platform and dependency checks. More...

#include <cinttypes>
#include <ciso646>
#include <cstddef>

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Macros
#define	SEQAN3_COMPILER_IS_GCC   0
	Whether the current compiler is GCC.
#define	SEQAN3_DEPRECATED_340    [[deprecated("This will be removed in SeqAn-3.4.0; please see the documentation.")]]
	Deprecation message for SeqAn 3.4.0 release.
#define	SEQAN3_DEPRECATED_HEADER(message)   SEQAN3_PRAGMA(GCC warning message)
	Deprecation message for deprecated header.
#define	SEQAN3_DISABLE_COMPILER_CHECK
	This disables the warning you would get if your compiler is not known to work.
#define	SEQAN3_DISABLE_LEGACY_STD_DIAGNOSTIC
	This disables the warning you would get if -D_GLIBCXX_USE_CXX11_ABI=0 is set.
#define	SEQAN3_PRAGMA(non_string_literal)   _Pragma(#non_string_literal)
	_Pragma requires a string-literal and # makes it a string
#define	SEQAN3_WITH_CEREAL   0
	Whether CEREAL support is available or not.
#define	SEQAN3_WORKAROUND_DEFAULT_CONSTRUCTIBLE_VIEW   0
	A view does not need to be default constructible. This change is first implemented in gcc12.
#define	SEQAN3_WORKAROUND_GCC_100139   0
	See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100139 std::views::{take, drop} do not type-erase. This is a defect within the standard lib (fixed in gcc12).
#define	SEQAN3_WORKAROUND_GCC_BOGUS_MEMCPY   0
	Workaround bogus memcpy errors in GCC 12 and 13. (Wrestrict and Wstringop-overflow)
#define	SEQAN3_WORKAROUND_GCC_NO_CXX11_ABI   0
	This is needed to support CentOS 7 or RHEL 7; Newer CentOS's include a more modern default-gcc version making this macro obsolete.
#define	SEQAN3_WORKAROUND_LITERAL   inline
	Our char literals returning std::vector should be constexpr if constexpr std::vector is supported.
#define	SEQAN3_WORKAROUND_VIEW_PERFORMANCE   1
	Performance of views, especially filter and join is currently bad, especially in I/O.

Detailed Descriptionno-api

Provides platform and dependency checks.

Author

Hannes Hauswedell <hannes.hauswedell AT fu-berlin.de>

Macro Definition Documentation

SEQAN3_WORKAROUND_GCC_BOGUS_MEMCPY [no-api]

#define SEQAN3_WORKAROUND_GCC_BOGUS_MEMCPY   0

no-api

Workaround bogus memcpy errors in GCC 12 and 13. (Wrestrict and Wstringop-overflow)

See also

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105545

SEQAN3_WORKAROUND_GCC_NO_CXX11_ABI [no-api]

#define SEQAN3_WORKAROUND_GCC_NO_CXX11_ABI   0

no-api

This is needed to support CentOS 7 or RHEL 7; Newer CentOS's include a more modern default-gcc version making this macro obsolete.

In GCC 5 there was a bigger ABI change and modern systems compile with dual ABI, but some enterprise systems (those where gcc 4 is the standard compiler) don't support dual ABI. This has the effect that even community builds of gcc are build with –disable-libstdcxx-dual-abi. Only building the compiler yourself would solve this problem.

See also

https://github.com/seqan/seqan3/issues/2244

https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html