Thanks for your supportiveness Karel :)
"And this is not LKML, this is mailing list where we keep things in
friendly atmosphere, so don't be afraid to make a bad choice,
contribute non-perfect solution or ask "stupid" questions..."
(I was once a systems programmer working on kernel-level code back in
the late nineties but I have very little experience with the whole
"auto*" build/release paradigm, especially as evinced in this rather
substantial project.)
I've worked up a simple patch to libuuid to allow for generation of
MD5/SHA-1 UUIDs (DEC V3, V5 conformant) since I can't seem to find any
other C-level APIs to that effect and libuuid seems to be the C-level
"go-to" for such. Does that seem reasonable?
Obviously this requires openssl, not a dependency that currently seems
to exist in util-linux. Is adding that depency reasonable? I've
added it as a default-yes ./configure --with-openssl option.
"Stupid" question: to expose the two new APIs it looks like I need to
add something like:
UUID_2.29 {
global:
uuid_generate_md5;
uuid_generate_sha1;
} UUID_2.20;
to libuuid.sym but I'm completely unclear as to what version I should
use, the current 2.29, some imagined 2.30, 2.29_rc3...?
And there may be other things I need to do to add APIs?
As a comment, the configure.ac section pertaining to libuuid's
requirements seems a little kludgy, and I've only expanded on that.
Pointers as to more correctly accomplishing the same would of course
be welcome, I prefer to leave things better than I found them. Below
for reference if anyone's interested.
Thanks for your attentions,
Whilom
~~~~~~~~~~ configure.ac excerpt ~~~~~~~~~~
SOCKET_LIBS=
AC_SEARCH_LIBS([socket], [socket],
[AS_IF([test x"$ac_cv_search_socket" != x"none required"],
[SOCKET_LIBS="$SOCKET_LIBS -lsocket"])
])
AC_SUBST([SOCKET_LIBS])
CRYPTO_LIBS=
AC_ARG_WITH([openssl],
AS_HELP_STRING([--with-openssl], [compile with OpenSSL support]),
[], [with_openssl=yes]
)
if test $with_openssl != no
then
a=0
AC_CHECK_HEADERS(openssl/md5.h, [], [a=1])
AC_SEARCH_LIBS([MD5_Init], [crypto],
[if test x"$ac_cv_search_MD5_Init" != x"none required"; then
CRYPTO_LIBS="-lcrypto";
fi], [a=1])
if test $a == 0
then
AC_DEFINE(HAVE_MD5, [1], [Define to 1 if you have MD5 functions])
fi
a=0
AC_CHECK_HEADERS(openssl/sha.h, [], [a=1])
AC_SEARCH_LIBS([SHA1_Init], [crypto],
[if test x"$ac_cv_search_MD5_Init" != x"none required"; then
CRYPTO_LIBS="-lcrypto";
fi], [a=1])
if test $a == 0
then
AC_DEFINE(HAVE_SHA1, [1], [Define to 1 if you have SHA1 functions])
fi
fi
AC_SUBST([CRYPTO_LIBS])
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