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| author | 卜部昌平 <shyouhei@ruby-lang.org> | 2020-09-23 09:41:08 +0900 |
|---|---|---|
| committer | 卜部昌平 <shyouhei@ruby-lang.org> | 2020-09-25 11:38:33 +0900 |
| commit | fe875be01a501a47a4bf75df9c6b42bb33d9842b (patch) | |
| tree | c40c65ce17141b3c653e8cb9a646533723c65205 /configure.ac | |
| parent | 996af2ce086249e904b2ce95ab2fcd1de7d757be (diff) | |
| download | ruby-fe875be01a501a47a4bf75df9c6b42bb33d9842b.tar.gz | |
rb_cv_have_alignas: not used any longer
Availability of `alignas` is checked in include/ruby/internal/stdalign.h
now. That does not need this configure check. Also as commented in the
header, we see `_Alignas` being inadequate for our purpose.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/configure.ac b/configure.ac index ab5d532c10..46fdecda23 100644 --- a/configure.ac +++ b/configure.ac @@ -1460,34 +1460,6 @@ AS_IF([test "$rb_cv_va_args_macro" = yes], [ AC_DEFINE(HAVE_VA_ARGS_MACRO) ]) -AC_CACHE_CHECK([for alignas() syntax], rb_cv_have_alignas, [ -rb_cv_have_alignas=no -# Prefer alignas over _Alignas to allow C++ compiler to read ruby.h -RUBY_WERROR_FLAG([ -for attr in \ - "alignas(x)" \ - "_Alignas(x)" \ - "@<:@@<:@alignas(x)@:>@@:>@" \ - "__declspec(aligned(x))" \ - "__attribute__((__aligned__(x)))" \ -; -do - # C11 _Alignas and GCC __attribute__((__aligned__)) behave - # slightly differently. What we want is GCC's. Check that - # here by something C11 does not allow (`struct ALIGNAS ...`) - AC_TRY_COMPILE([ - @%:@ifdef HAVE_STDALIGN_H - @%:@include <stdalign.h> - @%:@endif - @%:@define ALIGNAS(x) $attr - struct ALIGNAS(128) conftest_tag { int foo; } foo; ], [], - [rb_cv_have_alignas="$attr"; break], []) -done -])]) -AS_IF([test "$rb_cv_have_alignas" != no], [ - AC_DEFINE_UNQUOTED([RUBY_ALIGNAS(x)], $rb_cv_have_alignas) -]) - AC_CACHE_CHECK([for alignof() syntax], rb_cv_have_alignof,[ rb_cv_have_alignof=no # Prefer alignof over _Alignof to allow C++ compiler to read ruby.h |