add compat getopt implementation, remove patches

This adds a getopt implementation for compatibility where it is not
available, removing a couple of regress patches.

Note, this is a slightly modified copy from OpenBSD libc that doesn't
expose getopt_long, which has dependency conflicts with Windows system
headers and isn't needed anyway.

1 files changed, 2 insertions, 1 deletions

diff --git a/m4/check-libc.m4 b/m4/check-libc.m4
index 68a4f88..dc8d6bd 100644
--- a/m4/check-libc.m4
+++ b/m4/check-libc.m4
@@ -11,7 +11,7 @@ AC_CHECK_FUNCS([asprintf freezero memmem])
 AC_CHECK_FUNCS([readpassphrase reallocarray recallocarray])
 AC_CHECK_FUNCS([strlcat strlcpy strndup strnlen strsep strtonum])
 AC_CHECK_FUNCS([timegm _mkgmtime timespecsub])
-AC_CHECK_FUNCS([getprogname syslog syslog_r])
+AC_CHECK_FUNCS([getopt getprogname syslog syslog_r])
 AC_CACHE_CHECK([for getpagesize], ac_cv_func_getpagesize, [
         AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 #include <unistd.h>
@@ -25,6 +25,7 @@ AC_CACHE_CHECK([for getpagesize], ac_cv_func_getpagesize, [
 AM_CONDITIONAL([HAVE_ASPRINTF], [test "x$ac_cv_func_asprintf" = xyes])
 AM_CONDITIONAL([HAVE_FREEZERO], [test "x$ac_cv_func_freezero" = xyes])
 AM_CONDITIONAL([HAVE_GETPAGESIZE], [test "x$ac_cv_func_getpagesize" = xyes])
+AM_CONDITIONAL([HAVE_GETOPT], [test "x$ac_cv_func_getopt" = xyes])
 AM_CONDITIONAL([HAVE_MEMMEM], [test "x$ac_cv_func_memmem" = xyes])
 AM_CONDITIONAL([HAVE_READPASSPHRASE], [test "x$ac_cv_func_readpassphrase" = xyes])
 AM_CONDITIONAL([HAVE_REALLOCARRAY], [test "x$ac_cv_func_reallocarray" = xyes])