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Makefile: document default SHA-256 backend 

Since 27dc04c545 (sha256: add an SHA-256 implementation using
libgcrypt, 2018-11-14) we've claimed to support a BLK_SHA256 flag, but
there's no such SHA-256 backend.

Instead we fall back on adding "sha256/block/sha256.o" to "LIB_OBJS"
and adding "-DSHA256_BLK" to BASIC_CFLAGS.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
This commit is contained in:
Ævar Arnfjörð Bjarmason 2022-11-07 22:23:08 +01:00 committed by Taylor Blau
parent f569897cda
commit 84d71c2021
1 changed files with 3 additions and 2 deletions
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Makefile
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@ -515,14 +515,15 @@ include shared.mak
#
# ==== SHA-256 implementations ====
#
# Define BLK_SHA256 to use the built-in SHA-256 routines.
#
# Define NETTLE_SHA256 to use the SHA-256 routines in libnettle.
#
# Define GCRYPT_SHA256 to use the SHA-256 routines in libgcrypt.
#
# Define OPENSSL_SHA256 to use the SHA-256 routines in OpenSSL.
#
# If don't enable any of the *_SHA256 settings in this section, Git
# will default to its built-in sha256 implementation.
#
# == DEVELOPER defines ==
#
# Define DEVELOPER to enable more compiler warnings. Compiler version