platform.hpp File Reference

Provides platform and dependency checks. More...

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

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Macros
#define	SEQAN3_DEPRECATED_330    [[deprecated("This will be removed in SeqAn-3.3.0; please see the documentation.")]]
	Deprecation message for SeqAn 3.3.0 release.
#define	SEQAN3_DEPRECATED_HEADER(message)   SEQAN3_PRAGMA(GCC warning message)
	Deprecation message for deprecated header.
#define	SEQAN3_DISABLE_LEGACY_STD_DIAGNOSTIC
	This disables the warning you would get if -D_GLIBCXX_USE_CXX11_ABI=0 is set.
#define	SEQAN3_DISABLE_NEWER_COMPILER_DIAGNOSTIC
	This disables the warning you would get if your compiler is newer than the latest supported version.
#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_WITH_LEMON   0
	Whether Lemon 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_96070   0
	See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96070 and https://github.com/seqan/product_backlog/issues/151.
#define	SEQAN3_WORKAROUND_GCC_BOGUS_MEMCPY   0
	Workaround bogus memcpy errors in GCC 12.1. (Wrestrict and Wstringop-overflow) More...
#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. More...
#define	SEQAN3_WORKAROUND_GCC_PIPEABLE_CONFIG_CONCEPT   0
	Workaround to access the static id of the configuration elements inside of the concept definition (fixed in gcc11).
#define	SEQAN3_WORKAROUND_VIEW_PERFORMANCE   1
	Warn about gcc 10.0 and gcc 10.1 Known Issues: More...

Detailed Description

Provides platform and dependency checks.

Author

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

Macro Definition Documentation

SEQAN3_WORKAROUND_GCC_BOGUS_MEMCPY

#define SEQAN3_WORKAROUND_GCC_BOGUS_MEMCPY   0

Workaround bogus memcpy errors in GCC 12.1. (Wrestrict and Wstringop-overflow)

See also

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

SEQAN3_WORKAROUND_GCC_NO_CXX11_ABI

#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.

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

SEQAN3_WORKAROUND_VIEW_PERFORMANCE

#define SEQAN3_WORKAROUND_VIEW_PERFORMANCE   1

Warn about gcc 10.0 and gcc 10.1 Known Issues:

• https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93983
• https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95371
• https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95578
• https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99318
• https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93467

Performance of views, especially filter and join is currently bad, especially in I/O.