configure: add libdaxctl support
Add a pair of configure options --{enable,disable}-libdaxctl to control
whether QEMU is compiled with libdaxctl [1]. Libdaxctl is a utility
library for managing the device dax subsystem.
QEMU uses mmap(2) to maps vNVDIMM backends and aligns the mapping
address to the page size (getpagesize(2)) by default. However, some
types of backends may require an alignment different than the page
size. The 'align' option is provided to memory-backend-file to allow
users to specify the proper alignment.
For device dax (e.g., /dev/dax0.0), the 'align' option needs to match
the alignment requirement of the device dax, which can be fetched
through the APIs of libdaxctl version 57 or up.
[1] Libdaxctl is a part of ndctl project.
The project's repository is: https://github.com/pmem/ndctl
For more information about libdaxctl APIs, you can refer to the
comments in source code of: pmem/ndctl/daxctl/lib/libdaxctl.c.
Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Jingqi Liu <jingqi.liu@intel.com>
Message-Id: <20200429085011.63752-4-jingqi.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/configure b/configure
index ba88fd1..8d9435a0 100755
--- a/configure
+++ b/configure
@@ -517,6 +517,7 @@
fuzzing="no"
rng_none="no"
secret_keyring=""
+libdaxctl=""
supported_cpu="no"
supported_os="no"
@@ -1621,6 +1622,10 @@
;;
--disable-keyring) secret_keyring="no"
;;
+ --enable-libdaxctl) libdaxctl=yes
+ ;;
+ --disable-libdaxctl) libdaxctl=no
+ ;;
*)
echo "ERROR: unknown option $opt"
echo "Try '$0 --help' for more information"
@@ -1920,6 +1925,7 @@
libpmem libpmem support
xkbcommon xkbcommon support
rng-none dummy RNG, avoid using /dev/(u)random and getrandom()
+ libdaxctl libdaxctl support
NOTE: The object files are built at the place where configure is launched
EOF
@@ -6293,6 +6299,24 @@
fi
##########################################
+# check for libdaxctl
+
+if test "$libdaxctl" != "no"; then
+ if $pkg_config --atleast-version=57 "libdaxctl"; then
+ libdaxctl="yes"
+ libdaxctl_libs=$($pkg_config --libs libdaxctl)
+ libdaxctl_cflags=$($pkg_config --cflags libdaxctl)
+ libs_softmmu="$libs_softmmu $libdaxctl_libs"
+ QEMU_CFLAGS="$QEMU_CFLAGS $libdaxctl_cflags"
+ else
+ if test "$libdaxctl" = "yes" ; then
+ feature_not_found "libdaxctl" "Install libdaxctl"
+ fi
+ libdaxctl="no"
+ fi
+fi
+
+##########################################
# check for slirp
# slirp is only required when building softmmu targets
@@ -6898,6 +6922,7 @@
echo "sheepdog support $sheepdog"
echo "capstone $capstone"
echo "libpmem support $libpmem"
+echo "libdaxctl support $libdaxctl"
echo "libudev $libudev"
echo "default devices $default_devices"
echo "plugin support $plugins"
@@ -7731,6 +7756,10 @@
echo "CONFIG_LIBPMEM=y" >> $config_host_mak
fi
+if test "$libdaxctl" = "yes" ; then
+ echo "CONFIG_LIBDAXCTL=y" >> $config_host_mak
+fi
+
if test "$bochs" = "yes" ; then
echo "CONFIG_BOCHS=y" >> $config_host_mak
fi
