From 596c443112d09506c3bf13ac98046a84b912e56c Mon Sep 17 00:00:00 2001
From: Ron Yorston <rmy@pobox.com>
Date: Mon, 9 Jun 2025 13:23:49 +0100
Subject: Use Windows library for cryptographic checksums

Add a new feature to libbb, FEATURE_USE_CNG_API, which enables the
use of the Cryptography API: Next Generation library to calculate
checksums.  It is disabled by default except in the mingw64u default
config, as the API requires Windows 10+ to function.  Usage of this
API provides a size benefit and delegates hardware optimizations to
the operating system cryptography library.

Based on GitHub PR #498 by rfl890.

Saves 4064 bytes in the mingw64u case.
---
 scripts/mk_mingw64u_defconfig | 1 +
 1 file changed, 1 insertion(+)

(limited to 'scripts')

diff --git a/scripts/mk_mingw64u_defconfig b/scripts/mk_mingw64u_defconfig
index 19124d735..5561a0900 100755
--- a/scripts/mk_mingw64u_defconfig
+++ b/scripts/mk_mingw64u_defconfig
@@ -32,6 +32,7 @@ set_build_opts \
     CONFIG_LAST_SUPPORTED_WCHAR=1114111 \
     CONFIG_UNICODE_COMBINING_WCHARS=y \
     CONFIG_UNICODE_WIDE_WCHARS=y \
+    CONFIG_FEATURE_USE_CNG_API=y \
     < "$configs"/mingw64_defconfig \
     > "$configs"/mingw64u_defconfig
 
-- 
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