diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 6709122613..791389f4b7 100644 --- a/configure.in +++ b/configure.in @@ -1121,6 +1121,16 @@ AC_CHECK_FUNCS(fmod killpg wait4 waitpid fork spawnv syscall chroot getcwd eacce mktime timegm gmtime_r clock_gettime gettimeofday\ pread sendfile shutdown sigaltstack) +AC_CACHE_CHECK(for unsetenv returns a value, rb_cv_unsetenv_return_value, + [AC_TRY_COMPILE([ +#include <stdlib.h> +], [int v = unsetenv("foo");], + rb_cv_unsetenv_return_value=yes, + rb_cv_unsetenv_return_value=no)]) +if test "$rb_cv_unsetenv_return_value" = no; then + AC_DEFINE(VOID_UNSETENV) +fi + AC_CACHE_CHECK(for __builtin_setjmp, ac_cv_func___builtin_setjmp, [AC_TRY_LINK([@%:@include <setjmp.h> jmp_buf jb; void t(v) int v; {__builtin_longjmp(jb, v);}], |