From ab6762b849ce915141d8df11744840556bbfcf51 Mon Sep 17 00:00:00 2001
From: Milan Broz <gmazyland@gmail.com>
Date: Fri, 15 Apr 2022 21:43:45 +0200
Subject: [PATCH] Fix possible missing uchar.h.

---
 configure.ac                        | 2 +-
 lib/crypto_backend/crypto_backend.h | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index b052f8cf..d31fb0a7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -57,7 +57,7 @@ dnl ==========================================================================
 AC_C_RESTRICT
 
 AC_HEADER_DIRENT
-AC_CHECK_HEADERS(fcntl.h malloc.h inttypes.h sys/ioctl.h sys/mman.h \
+AC_CHECK_HEADERS(fcntl.h malloc.h inttypes.h uchar.h sys/ioctl.h sys/mman.h \
 	sys/sysmacros.h sys/statvfs.h ctype.h unistd.h locale.h byteswap.h endian.h stdint.h)
 AC_CHECK_DECLS([O_CLOEXEC],,[AC_DEFINE([O_CLOEXEC],[0], [Defined to 0 if not provided])],
 [[
diff --git a/lib/crypto_backend/crypto_backend.h b/lib/crypto_backend/crypto_backend.h
index 39e98198..af751e10 100644
--- a/lib/crypto_backend/crypto_backend.h
+++ b/lib/crypto_backend/crypto_backend.h
@@ -25,7 +25,12 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <string.h>
+#ifdef HAVE_UCHAR_H
 #include <uchar.h>
+#else
+#define char32_t uint32_t
+#define char16_t uint16_t
+#endif
 
 struct crypt_hash;
 struct crypt_hmac;