* configure.in (XCFLAGS): merge flags only for ruby itself from
ruby_cflags.
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-fexcess-precision=standard and -fp-model precise are set to this now.
* configure.in (cflags): use ruby_cflags.
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* configure.in (RUBY_CHECK_BUILTIN_SETJMP): declare t as NORETURN
to suppress warnings by -Wsuggest-attribute=noreturn.
[ruby-core:75510] [Bug #12383]
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* configure.in (FUNC_STDCALL, FUNC_CDECL, FUNC_FASTCALL): set
macro names explicitly to the old names, which are accidentally
changed at r54985, for backward compatibilities.
fiddle also depends on these names to fallback to ANSI names.
[ruby-core:75494] [Bug #12377]
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* util.c (ruby_qsort): use qsort_s if available, for Microsoft
Visual Studio 2005 (msvcr80.dll) and mingw.
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is specified and it implied -fexcess-precision=standard.
Now with -std=gnu99, it should be explicitly specified.
https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html
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and define CONSTFUNC and PUREFUNC if available.
Note that I don't add those options as default because
it still shows many false-positive (it seems not to consider
longjmp).
* vm_eval.c (stack_check): get rb_thread_t* as an argument
to avoid duplicate call of GET_THREAD().
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* random.c (fill_random_bytes_syscall): use arc4random_buf if
available.
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only if it can use SSE 4.2 POPCNT whose latency is 3 cycle.
* internal.h (rb_popcount64): use __builtin_popcountll because now
it is in fast path.
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* configure.in (__builtin_ctz): check.
* configure.in (__builtin_ctzll): check.
* internal.h (rb_popcount32): defined for ntz_int32.
it can use __builtin_popcount but this function is not used on
GCC environment because it uses __builtin_ctz.
When another function uses this, using __builtin_popcount
should be re-considered.
* internal.h (rb_popcount64): ditto.
* internal.h (ntz_int32): defined for ntz_intptr.
* internal.h (ntz_int64): defined for ntz_intptr.
* internal.h (ntz_intptr): defined as ntz for uintptr_t.
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returns positive infinity, in addition to lgamma_r(-0.0).
AIX returns an incorrect result of negative infinity.
* math.c (ruby_lgamma_r): handle +0.0, in addition to -0.0.
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In AIX, round(0.49999999999999994) returns 1.0.
Use round() in numeric.c instead.
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* configure.in: check if succeeded in creating config.h.
* tool/ifchange: ignore failures when TEST_COLORS unmatched. just
use the default value if expected name is not contained in it.
[ruby-core:75046] [Bug #12303]
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* configure.in (cygwin): add feature macros for the declarations
of eaccess.
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* configure.in (AC_CONFIG_FILES): $srcdir/.git can be a file pointing
the real git_dir, such as when the git working tree is a "linked
working tree" (a working tree created by git-worktree). So use
git-rev-parse --git-dir to check if $srcdir is the top-level of a git
repository, not just checking if the $srcdir/.git directory does exist
or not. [ruby-core:74759] [Bug #12239]
* tool/change_maker.rb: use tool/vcs.rb to detect VCS. This used to have
its own VCS detection code, while we have tool/vcs.rb.
* tool/vcs.rb (detect): remove code duplication
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define _BSD_SOURCE for time.h to define struct tm.tm_gmtoff.
* time.c: define _BSD_SOURCE at the top.
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* configure.in: Add summary to end of configure output.
[Fix GH-1277]
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* configure.in (RUBY_CHECK_SIZEOF, RUBY_DEFINT): fix for types
which are conditionally available depending on architectures
when universal binary, e.g., __int128.
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* configure.in (RUBY_DEFINT): use quadrigraphs instead of bare
hash signs not to comment out closing parenthesis.
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HAVE___INT128) because RUBY_CHECK_SIZEOF() don't define it for
config.h and use of $ac_cv_sizeof___int128 alternates the check.
(and don't need to define because users shouldn't know that)
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* configure.in (ARFLAGS): needs a trailing space to separate from
the target library name, whereas VC linker flag must not
separate from its argument.
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* configure.in (ARFLAGS): check if deterministic mode flag is
effective, which is on by default on Ubuntu.
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* configure.in: types without _t have prior than types with _t.
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* configure.in: check __int64_t and __int128_t for RUBY_DEFINT on
OS X.
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