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block/ssh: Require libssh2 >= 1.2.8.

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libssh2 >= 1.2.8 is required to enable this block device (because
that version introduced the libssh2_session_handshake call).

Change the test to use pkg-config exclusively.  If the user requests
--enable-libssh2 and the minimum version is not available, then the
following error is displayed:

  $ ./configure --enable-libssh2

  ERROR: libssh2 >= 1.2.8 required for --enable-libssh2

If --enable-libssh2 is not specified, then the feature is silently
disabled if sufficiently new libssh2 is not available.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Richard W.M. Jones 2013-04-19 09:16:39 +01:00 committed by Stefan Hajnoczi
parent e3351000cd
commit 4fc16838b8
1 changed files with 4 additions and 20 deletions
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24
configure vendored
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@ -2364,35 +2364,19 @@ fi
##########################################
# libssh2 probe
min_libssh2_version=1.2.8
if test "$libssh2" != "no" ; then
cat > $TMPC <<EOF
#include <stdio.h>
#include <libssh2.h>
#include <libssh2_sftp.h>
int main(void) {
LIBSSH2_SESSION *session;
session = libssh2_session_init ();
(void) libssh2_sftp_init (session);
return 0;
}
EOF
if $pkg_config libssh2 --modversion >/dev/null 2>&1; then
if $pkg_config --atleast-version=$min_libssh2_version libssh2 >/dev/null 2>&1
then
libssh2_cflags=`$pkg_config libssh2 --cflags`
libssh2_libs=`$pkg_config libssh2 --libs`
else
libssh2_cflags=
libssh2_libs="-lssh2"
fi
if compile_prog "$libssh2_cflags" "$libssh2_libs" ; then
libssh2=yes
libs_tools="$libssh2_libs $libs_tools"
libs_softmmu="$libssh2_libs $libs_softmmu"
QEMU_CFLAGS="$QEMU_CFLAGS $libssh2_cflags"
else
if test "$libssh2" = "yes" ; then
feature_not_found "libssh2"
error_exit "libssh2 >= $min_libssh2_version required for --enable-libssh2"
fi
libssh2=no
fi