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ruby--ruby/tool/m4/ruby_check_setjmp.m4
shyouhei 5839396028 Emacs friendliness [ci skip]
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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61983 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-01-20 07:14:59 +00:00

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# -*- Autoconf -*-
# used for AC_ARG_WITH(setjmp-type)
AC_DEFUN([RUBY_CHECK_SETJMP], [
AC_CACHE_CHECK([for ]$1[ as a macro or function], ac_cv_func_$1,
[AC_TRY_COMPILE([
@%:@include <setjmp.h>
]AC_INCLUDES_DEFAULT([$3])[
@%:@define JMPARGS_1 env
@%:@define JMPARGS_2 env,1
@%:@define JMPARGS JMPARGS_]m4_ifval($2,2,1)[
],
m4_ifval($2,$2,jmp_buf)[ env; $1(JMPARGS);],
ac_cv_func_$1=yes,
ac_cv_func_$1=no)]
)
AS_IF([test "$ac_cv_func_]$1[" = yes], [AC_DEFINE([HAVE_]AS_TR_CPP($1), 1)])
])dnl