md5, sha1, sha256, sha512: add gl_SET_CRYPTO_CHECK_DEFAULT

[gnulib.git] / ChangeLog

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+2013-12-07  Paul Eggert  <eggert@cs.ucla.edu>
+
+       md5, sha1, sha256, sha512: add gl_SET_CRYPTO_CHECK_DEFAULT
+       This provides a new way to specify the default for
+       gl_CRYPTO_CHECK, one that is reflected in the --help message.
+       Emacs uses this, as well as the old way.
+       This attempts to implement a suggestion by Pádraig Brady in
+       <http://lists.gnu.org/archive/html/coreutils/2013-12/msg00080.html>.
+       * m4/gl-openssl.m4(gl_SET_CRYPTO_CHECK_DEFAULT): New macro.
+       (gl_CRYPTO_CHECK): Use it.  Mention the default in --help output.
+
+       md5, sha1, sha256, sha512: add 'auto', and a way to specify default
+       * m4/gl-openssl.m4 (gl_CRYPTO_CHECK):
+       Add support for a new option, --with-openssl=auto, which causes
+       the library to be used if available and silently ignored if not.
+       Add support to allow allow configure.ac to specify its own
+       default, by setting with_openssl_default before invoking gl_INIT.
+
 2013-12-05  Paul Eggert  <eggert@cs.ucla.edu>
 
        open-tests: port to glibc with _FORTIFY_SOURCE and -O1