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| author | Pádraig Brady <P@draigBrady.com> | 2013-12-03 03:51:52 +0000 |
|---|---|---|
| committer | Pádraig Brady <P@draigBrady.com> | 2013-12-04 13:18:56 +0000 |
| commit | b53b0fd940382497e58a9e912f1262c2084fe534 (patch) | |
| tree | 7b5fde00794f059d22b685f05794b754a4aa513e /configure.ac | |
| parent | 2091f44993c4d0ad16cbe272c247bb452ae74216 (diff) | |
| download | coreutils-b53b0fd940382497e58a9e912f1262c2084fe534.tar.xz | |
md5sum, sha*sum: use libcrypto where available
libcrypto is generally available and has well optimized
crypto hash routines particular to various systems.
For example, testing sha1sum with openssl-1.0.0j
on an i3-2310M, gives a performance boost of about 40%:
$ time sha1sum.old --tag ~/test.iso
SHA1 (/home/padraig/test.iso) = 3c27f7ed01965fd2b89e22128fd62dc51a3bef30
real 0m4.692s
user 0m4.499s
sys 0m0.162s
$ time sha1sum.new --tag ~/test.iso
SHA1 (/home/padraig/test.iso) = 3c27f7ed01965fd2b89e22128fd62dc51a3bef30
real 0m2.685s
user 0m2.512s
sys 0m0.170s
* configure.ac: By default, enable use of libcrypto if available.
* src/local.mk: Link with libcrypto.
* NEWS: Mention the md5sum and sha*sum improvements.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 8a3ac48a0..16b6c35b1 100644 --- a/configure.ac +++ b/configure.ac @@ -50,6 +50,17 @@ m4_syscmd([test "${GNULIB_POSIXCHECK+set}" = set]) m4_if(m4_sysval, [0], [], [dnl gl_ASSERT_NO_GNULIB_POSIXCHECK]) +dnl Enable use of libcrypto if available. +dnl Note we could do this as follows: +dnl AS_VAR_SET_IF([with_openssl], [], [with_openssl=optional]) +dnl However that would not document the coreutils adjusted default, +dnl so we add another --with-openssl description just to document that +AC_ARG_WITH([openssl], + [AC_HELP_STRING([--with-openssl], + [The coreutils default is: --with-openssl=optional])], + [], + [with_openssl=optional]) + AC_PROG_CC_STDC AM_PROG_CC_C_O AC_PROG_CPP |