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authorPaul Eggert <eggert@cs.ucla.edu>2013-12-08 00:05:36 -0800
committerPaul Eggert <eggert@cs.ucla.edu>2013-12-08 00:05:36 -0800
commite9551b12f8c17876a32e1cd075c83af3e7950980 (patch)
treea1130605fdba681c9118c71f5edd4ee2b9ef4c51 /m4/sha1.m4
parent02033d491fa708e28bb3568ff85dab4d0ceb076b (diff)
Use libcrypto's checksum implementations if available, for speed.
On commonly used platform libcrypto uses architecture-specific assembly code, which is significantly faster than the C code we were using. See Pádraig Brady's note in <http://lists.gnu.org/archive/html/bug-gnulib/2013-12/msg00000.html>. Merge from gnulib, incorporating: 2013-12-07 md5, sha1, sha256, sha512: add gl_SET_CRYPTO_CHECK_DEFAULT 2013-12-07 md5, sha1, sha256, sha512: add 'auto', and set-default method 2013-12-04 include_next: minimize code duplication 2013-12-03 md5, sha1, sha256, sha512: support mandating use of openssl 2013-12-02 md5, sha1, sha256, sha512: use openssl routines if available * configure.ac (--without-all): Set with_openssl_default too. Use gl_SET_CRYPTO_CHECK_DEFAULT to default to 'auto'. (HAVE_LIB_CRYPTO): New var. Say whether Emacs is configured to use a crypto library. * lib/gl_openssl.h, m4/absolute-header.m4, m4/gl-openssl.m4: New files, copied from gnulib. * lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate. * lib/md5.c, lib/md5.h, lib/sha1.c, lib/sha1.h: * lib/sha256.c, lib/sha256.h, lib/sha512.c, lib/sha512.h: * m4/include_next.m4, m4/md5.m4, m4/sha1.m4, m4/sha256.m4, m4/sha512.m4: Update from gnulib. * src/Makefile.in (LIB_CRYPTO): New macro. (LIBES): Use it.
Diffstat (limited to 'm4/sha1.m4')
-rw-r--r--m4/sha1.m46
1 files changed, 4 insertions, 2 deletions
diff --git a/m4/sha1.m4 b/m4/sha1.m4
index 21c775e364..57d5256652 100644
--- a/m4/sha1.m4
+++ b/m4/sha1.m4
@@ -1,4 +1,4 @@
-# sha1.m4 serial 11
+# sha1.m4 serial 12
dnl Copyright (C) 2002-2006, 2008-2013 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -8,5 +8,7 @@ AC_DEFUN([gl_SHA1],
[
dnl Prerequisites of lib/sha1.c.
AC_REQUIRE([gl_BIGENDIAN])
- :
+
+ dnl Determine HAVE_OPENSSL_SHA1 and LIB_CRYPTO
+ gl_CRYPTO_CHECK([SHA1])
])