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Diffstat (limited to 'config_host/config_global.h.in')
| -rw-r--r-- | config_host/config_global.h.in | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/config_host/config_global.h.in b/config_host/config_global.h.in new file mode 100644 index 000000000..d9a907f4b --- /dev/null +++ b/config_host/config_global.h.in @@ -0,0 +1,42 @@ +/* +Global configuration file. + +Only for settings that apply to every source file and are unlikely to change often, +such as whether a certain C++11 feature is available. + +Do NOT use for settings local to some code or for settings that can change often. +Any change in this header will cause a rebuild of almost everything. + +*/ + +#ifndef CONFIG_GLOBAL_H +#define CONFIG_GLOBAL_H + +#define HAVE_GCC_BUILTIN_ATOMIC 0 +#define HAVE_SYSLOG_H 0 + +// Compiler supports all of C++2a <https://wg21.link/P0202R3> "Add Constexpr Modifiers to Functions +// in <algorithm> and <utility> Headers", <https://wg21.link/P1004R2> "Making std::vector +// constexpr", and <https://wg21.link/P1143R2> "Adding the constinit keyword": +#define HAVE_CPP_CONSTINIT_SORTED_VECTOR 0 + +// Useable C++2a <span>: +#define HAVE_CPP_SPAN 0 + +/* "CWG motion 23: P1825R0 'Merged wording for P0527R1 and P1155R3' (DR)" in + <https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/n4829.html> "N4829 Editors' Report -- + Programming Languages -- C++" marks + <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1155r3.html> "More implicit moves" as a + DR. Some versions of GCC already implemented it prior to the fix for + <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87150> "move ctor wrongly chosen in return stmt + (derived vs. base)"; MSVC++ 14.24 started to implement it, see <https:// + developercommunity.visualstudio.com/content/problem/852827/ + msvc-1424-started-to-chose-move-ctor-in-return-der.html> "MSVC++ 14.24 started to chose move ctor + in return derived vs. base". At least Clang 9, which does not implement it, emits + -Werror,-Wreturn-std-move when it therefore considers a std::move to be missing. On the other + hand, at least some versions of GCC would emit -Werror=redundant-move in places where such a + std::move would be added unconditionally, see c00948d9bd35dfb15a331c2163f32e9ee24644fd "Silence + bogus -Werror=redundant-move (GCC 9)". */ +#define HAVE_P1155R3 0 + +#endif |