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| author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-10-19 16:29:31 +0000 |
|---|---|---|
| committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-10-19 16:29:31 +0000 |
| commit | 45ebea2f5feb834cd398e31eb786e16d672c2918 (patch) | |
| tree | eeda414df6ef00fddfd2ccd3c8317f09e0cb0a0c /configure.in | |
| parent | 2f375645998dbb62fc1f76c6a9ffc68198b35e66 (diff) | |
| download | ruby-45ebea2f5feb834cd398e31eb786e16d672c2918.tar.gz | |
check INFINITY and NAN without C99 option
* configure.in: check INFINITY and NAN without an option for C99
so that rb_infinity and rb_nan are respectively available
regardless that option if they may be used.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52197 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/configure.in b/configure.in index df4e0014bc..6cb013aa1f 100644 --- a/configure.in +++ b/configure.in @@ -839,6 +839,20 @@ if test "$GCC:${warnflags+set}:no" = yes::no; then fi RUBY_TRY_CFLAGS(-Qunused-arguments, [RUBY_APPEND_OPTIONS(rb_cv_wsuppress_flags, -Qunused-arguments)]) +for n in infinity nan; do + m=AS_TR_CPP($n) + AC_CACHE_CHECK([whether $m is available without C99 option], rb_cv_$n, + [AC_COMPILE_IFELSE( + [AC_LANG_BOOL_COMPILE_TRY(AC_INCLUDES_DEFAULT([@%:@include <math.h> +@%:@ifndef $m +@%:@error no $m +@%:@endif +]), [1])], [eval rb_cv_$n=yes], [eval rb_cv_$n=no])]) + if eval test '"$rb_cv_'$n'"' = yes; then + AC_DEFINE_UNQUOTED([HAVE_]$m) + fi +done + if test "$GCC" = yes; then # NaCl's glibc build generates undefined references to __memset_chk. # TODO(sbc): Remove this once NaCl's glibc is fixed. |