newlib/config/sjlj.m4

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dnl Check if the compiler is configured for setjmp/longjmp exceptions.
AC_DEFUN([GCC_CHECK_SJLJ_EXCEPTIONS],
[AC_CACHE_CHECK([whether the compiler is configured for setjmp/longjmp exceptions],
ac_cv_sjlj_exceptions,
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[#ifdef __USING_SJLJ_EXCEPTIONS__
this will fail
#endif]],
[[int i;]])],
[ac_cv_sjlj_exceptions=no],
[ac_cv_sjlj_exceptions=yes])])])