Makefile: document default SHA-256 backend

avar · ttaylorr · commit 84d71c202144 · 2022-11-07T22:11:51.000-05:00
Since 27dc04c (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>
diff --git a/Makefile b/Makefile
@@ -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

Original file line number	Diff line number	Diff line change
`@@ -515,14 +515,15 @@ include shared.mak`
`515`	`515`	`#`
`516`	`516`	`# ==== SHA-256 implementations ====`
`517`	`517`	`#`
`518`		`-# Define BLK_SHA256 to use the built-in SHA-256 routines.`
`519`		`-#`
`520`	`518`	`# Define NETTLE_SHA256 to use the SHA-256 routines in libnettle.`
`521`	`519`	`#`
`522`	`520`	`# Define GCRYPT_SHA256 to use the SHA-256 routines in libgcrypt.`
`523`	`521`	`#`
`524`	`522`	`# Define OPENSSL_SHA256 to use the SHA-256 routines in OpenSSL.`
`525`	`523`	`#`
	`524`	`+# If don't enable any of the *_SHA256 settings in this section, Git`
	`525`	`+# will default to its built-in sha256 implementation.`
	`526`	`+#`
`526`	`527`	`# == DEVELOPER defines ==`
`527`	`528`	`#`
`528`	`529`	`# Define DEVELOPER to enable more compiler warnings. Compiler version`