configure: add --without-default-features
By default QEMU enables a lot of features if it can probe and find the support libraries. It also enables a bunch of features by default. This patch adds the ability to build --without-default-features which can be paired with a --without-default-devices for a barely functional build. The main use case for this is testing our build assumptions and for minimising the amount of stuff you build if you just want to test a particular feature on your relatively slow emulated test system. On it's own I go from: $ ls -lh qemu-system-aarch64 -rwxr-xr-x 1 alex alex 120M Dec 10 12:45 qemu-system-aarch64* $ ldd qemu-system-aarch64 | wc -l 170 to: $ ls -lh qemu-aarch64 -rwxr-xr-x 1 alex alex 43M Dec 10 12:41 qemu-aarch64* $ ldd qemu-system-aarch64 | wc -l 57 which is still able to run my default Debian ARM64 machine with a lot less fat involved. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Acked-by: Thomas Huth <thuth@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20201210190417.31673-5-alex.bennee@linaro.org>stable-6.0
Alex Bennée
Paolo Bonzini
parent
0e8e77d487
commit
c87ea11631
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@ -293,8 +293,19 @@ unset target_list_exclude
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# Distributions want to ensure that several features are compiled in, and it
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# is impossible without a --enable-foo that exits if a feature is not found.
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brlapi=""
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curl=""
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default_feature=""
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# parse CC options second
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for opt do
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optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
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case "$opt" in
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--without-default-features)
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default_feature="no"
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;;
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esac
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done
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brlapi="$default_feature"
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curl="$default_feature"
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iconv="auto"
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curses="auto"
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docs="auto"
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@ -303,52 +314,52 @@ netmap="no"
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sdl="auto"
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sdl_image="auto"
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virtiofsd="auto"
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virtfs=""
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virtfs="$default_feature"
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libudev="auto"
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mpath="auto"
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vnc="enabled"
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sparse="auto"
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vde=""
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vde="$default_feature"
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vnc_sasl="auto"
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vnc_jpeg="auto"
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vnc_png="auto"
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xkbcommon="auto"
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xen=""
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xen_ctrl_version=""
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xen="$default_feature"
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xen_ctrl_version="$default_feature"
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xen_pci_passthrough="auto"
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linux_aio=""
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linux_io_uring=""
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cap_ng=""
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attr=""
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libattr=""
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xfs=""
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linux_aio="$default_feature"
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linux_io_uring="$default_feature"
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cap_ng="$default_feature"
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attr="$default_feature"
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libattr="$default_feature"
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xfs="$default_feature"
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tcg="enabled"
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membarrier=""
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vhost_net=""
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vhost_crypto=""
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vhost_scsi=""
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vhost_vsock=""
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membarrier="$default_feature"
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vhost_net="$default_feature"
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vhost_crypto="$default_feature"
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vhost_scsi="$default_feature"
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vhost_vsock="$default_feature"
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vhost_user="no"
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vhost_user_blk_server="auto"
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vhost_user_fs=""
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vhost_user_fs="$default_feature"
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kvm="auto"
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hax="auto"
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hvf="auto"
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whpx="auto"
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rdma=""
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pvrdma=""
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rdma="$default_feature"
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pvrdma="$default_feature"
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gprof="no"
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debug_tcg="no"
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debug="no"
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sanitizers="no"
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tsan="no"
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fortify_source=""
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fortify_source="$default_feature"
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strip_opt="yes"
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tcg_interpreter="no"
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bigendian="no"
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mingw32="no"
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gcov="no"
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EXESUF=""
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EXESUF="$default_feature"
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HOST_DSOSUF=".so"
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modules="no"
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module_upgrades="no"
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@ -370,81 +381,81 @@ pie=""
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qom_cast_debug="yes"
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trace_backends="log"
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trace_file="trace"
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spice=""
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rbd=""
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smartcard=""
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spice="$default_feature"
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rbd="$default_feature"
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smartcard="$default_feature"
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u2f="auto"
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libusb=""
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usb_redir=""
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opengl=""
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libusb="$default_feature"
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usb_redir="$default_feature"
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opengl="$default_feature"
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opengl_dmabuf="no"
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cpuid_h="no"
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avx2_opt=""
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avx2_opt="$default_feature"
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capstone="auto"
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lzo=""
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snappy=""
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bzip2=""
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lzfse=""
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zstd=""
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guest_agent=""
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lzo="$default_feature"
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snappy="$default_feature"
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bzip2="$default_feature"
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lzfse="$default_feature"
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zstd="$default_feature"
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guest_agent="$default_feature"
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guest_agent_with_vss="no"
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guest_agent_ntddscsi="no"
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guest_agent_msi=""
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vss_win32_sdk=""
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guest_agent_msi="$default_feature"
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vss_win32_sdk="$default_feature"
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win_sdk="no"
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want_tools=""
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libiscsi=""
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libnfs=""
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want_tools="$default_feature"
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libiscsi="$default_feature"
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libnfs="$default_feature"
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coroutine=""
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coroutine_pool=""
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coroutine_pool="$default_feature"
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debug_stack_usage="no"
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crypto_afalg="no"
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seccomp=""
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glusterfs=""
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seccomp="$default_feature"
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glusterfs="$default_feature"
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glusterfs_xlator_opt="no"
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glusterfs_discard="no"
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glusterfs_fallocate="no"
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glusterfs_zerofill="no"
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glusterfs_ftruncate_has_stat="no"
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glusterfs_iocb_has_stat="no"
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gtk=""
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gtk="$default_feature"
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gtk_gl="no"
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tls_priority="NORMAL"
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gnutls=""
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nettle=""
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gnutls="$default_feature"
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nettle="$default_feature"
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nettle_xts="no"
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gcrypt=""
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gcrypt="$default_feature"
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gcrypt_hmac="no"
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gcrypt_xts="no"
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qemu_private_xts="yes"
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auth_pam=""
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vte=""
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virglrenderer=""
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tpm=""
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libssh=""
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live_block_migration="yes"
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numa=""
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auth_pam="$default_feature"
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vte="$default_feature"
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virglrenderer="$default_feature"
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tpm="$default_feature"
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libssh="$default_feature"
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live_block_migration=${default_feature:-yes}
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numa="$default_feature"
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tcmalloc="no"
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jemalloc="no"
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replication="yes"
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bochs="yes"
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cloop="yes"
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dmg="yes"
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qcow1="yes"
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vdi="yes"
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vvfat="yes"
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qed="yes"
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parallels="yes"
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replication=${default_feature:-yes}
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bochs=${default_feature:-yes}
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cloop=${default_feature:-yes}
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dmg=${default_feature:-yes}
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qcow1=${default_feature:-yes}
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vdi=${default_feature:-yes}
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vvfat=${default_feature:-yes}
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qed=${default_feature:-yes}
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parallels=${default_feature:-yes}
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sheepdog="no"
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libxml2=""
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libxml2="$default_feature"
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debug_mutex="no"
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libpmem=""
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libpmem="$default_feature"
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default_devices="yes"
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plugins="no"
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fuzzing="no"
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rng_none="no"
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secret_keyring=""
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libdaxctl=""
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secret_keyring="$default_feature"
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libdaxctl="$default_feature"
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meson=""
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ninja=""
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skip_meson=no
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@ -455,7 +466,7 @@ fuse_lseek="auto"
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bogus_os="no"
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malloc_trim="auto"
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# parse CC options first
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# parse CC options second
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for opt do
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optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
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case "$opt" in
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@ -798,7 +809,7 @@ Linux)
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audio_possible_drivers="oss alsa sdl pa"
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linux="yes"
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linux_user="yes"
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vhost_user="yes"
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vhost_user=${default_feature:-yes}
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;;
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esac
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@ -942,6 +953,8 @@ for opt do
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;;
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--without-default-devices) default_devices="no"
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;;
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--without-default-features) # processed above
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;;
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--enable-gprof) gprof="yes"
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;;
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--enable-gcov) gcov="yes"
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@ -1747,7 +1760,8 @@ Advanced options (experts only):
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--gdb=GDB-path gdb to use for gdbstub tests [$gdb_bin]
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Optional features, enabled with --enable-FEATURE and
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disabled with --disable-FEATURE, default is enabled if available:
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disabled with --disable-FEATURE, default is enabled if available
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(unless built with --without-default-features):
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system all system emulation targets
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user supported user emulation targets
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@ -6958,6 +6972,7 @@ NINJA=$ninja $meson setup \
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-Ddocs=$docs -Dsphinx_build=$sphinx_build -Dinstall_blobs=$blobs \
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-Dvhost_user_blk_server=$vhost_user_blk_server \
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-Dfuse=$fuse -Dfuse_lseek=$fuse_lseek \
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$(if test "$default_features" = no; then echo "-Dauto_features=disabled"; fi) \
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$cross_arg \
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"$PWD" "$source_path"
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