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ruby--ruby/tool/m4/ruby_check_sysconf.m4
2021-01-18 16:22:17 +09:00

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# -*- Autoconf -*-
AC_DEFUN([RUBY_CHECK_SYSCONF], [dnl
AC_CACHE_CHECK([whether _SC_$1 is supported], rb_cv_have_sc_[]m4_tolower($1),
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
]],
[[_SC_$1 >= 0]])],
rb_cv_have_sc_[]m4_tolower($1)=yes,
rb_cv_have_sc_[]m4_tolower($1)=no)
])
AS_IF([test "$rb_cv_have_sc_[]m4_tolower($1)" = yes], [
AC_DEFINE(HAVE__SC_$1)
])
])dnl