>>> host-qemu 6.0.0 Extracting
xzcat /tmp/instance-1/dl/qemu/qemu-6.0.0.tar.xz | tar --strip-components=1 -C /tmp/instance-1/output-1/build/host-qemu-6.0.0   -xf -
>>> host-qemu 6.0.0 Patching

Applying 0001-user-exec-fix-usage-of-mcontext-structure-on-ARM-uCl.patch using patch: 
patching file accel/tcg/user-exec.c

Applying 0002-Fix-build-with-64-bits-time_t.patch using patch: 
patching file contrib/vhost-user-input/main.c
patching file hw/input/virtio-input-host.c

Applying 0003-meson-add-tests-option.patch using patch: 
patching file configure
patching file meson.build
patching file meson_options.txt
>>> host-qemu 6.0.0 Configuring
unset TARGET_DIR; cd /tmp/instance-1/output-1/build/host-qemu-6.0.0; PATH="/tmp/instance-1/output-1/host/bin:/tmp/instance-1/output-1/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin" PKG_CONFIG="/tmp/instance-1/output-1/host/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG_LIBDIR="/tmp/instance-1/output-1/host/lib/pkgconfig:/tmp/instance-1/output-1/host/share/pkgconfig" AR="/usr/bin/ar" AS="/usr/bin/as" LD="/usr/bin/ld" NM="/usr/bin/nm" CC="/usr/bin/gcc" GCC="/usr/bin/gcc" CXX="/usr/bin/g++" CPP="/usr/bin/cpp" OBJCOPY="/usr/bin/objcopy" RANLIB="/usr/bin/ranlib" CPPFLAGS="-I/tmp/instance-1/output-1/host/include" CFLAGS="-O2 -I/tmp/instance-1/output-1/host/include" CXXFLAGS="-O2 -I/tmp/instance-1/output-1/host/include" LDFLAGS="-L/tmp/instance-1/output-1/host/lib -Wl,-rpath,/tmp/instance-1/output-1/host/lib" INTLTOOL_PERL=/usr/bin/perl CPP="/usr/bin/gcc -E" ./configure --target-list="riscv32-linux-user" --prefix="/tmp/instance-1/output-1/host" --interp-prefix=/tmp/instance-1/output-1/host/riscv32-buildroot-linux-gnu/sysroot --cc="/usr/bin/gcc" --host-cc="/usr/bin/gcc" --extra-cflags="-O2 -I/tmp/instance-1/output-1/host/include" --extra-ldflags="-L/tmp/instance-1/output-1/host/lib -Wl,-rpath,/tmp/instance-1/output-1/host/lib" --meson=/tmp/instance-1/output-1/host/bin/meson --ninja=/tmp/instance-1/output-1/host/bin/ninja --disable-bzip2 --disable-containers --disable-curl --disable-libssh --disable-linux-io-uring --disable-sdl --disable-vhost-user-blk-server --disable-virtiofsd --disable-vnc-jpeg --disable-vnc-png --disable-vnc-sasl --disable-tests --disable-system --enable-linux-user --enable-vde --enable-virtfs --enable-cap-ng --enable-libusb
Using './build' as the directory for build output
The Meson build system
Version: 0.57.2
Source dir: /tmp/instance-1/output-1/build/host-qemu-6.0.0
Build dir: /tmp/instance-1/output-1/build/host-qemu-6.0.0/build
Build type: native build
Project name: qemu
Project version: 6.0.0
C compiler for the host machine: /usr/bin/gcc (gcc 9.3.0 "gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0")
C linker for the host machine: /usr/bin/gcc ld.bfd 2.34
Host machine cpu family: x86_64
Host machine cpu: x86_64
Program sh found: YES (/bin/sh)
Program python3 found: YES (/tmp/instance-1/output-1/host/bin/python3)
Program bzip2 found: YES (/tmp/instance-1/output-1/host/bin/bzip2)
../meson.build:117: WARNING: Consider using the built-in optimization level instead of using "-O2".
../meson.build:119: WARNING: Consider using the built-in optimization level instead of using "-O2".
../meson.build:121: WARNING: Consider using the built-in optimization level instead of using "-O2".
C++ compiler for the host machine: /usr/bin/g++ (gcc 9.3.0 "g++ (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0")
C++ linker for the host machine: /usr/bin/g++ ld.bfd 2.34
Program cgcc found: NO
Library m found: YES
Library util found: YES
Run-time dependency appleframeworks found: NO (tried framework)
Library pam found: YES
Library aio found: NO
Found pkg-config: /tmp/instance-1/output-1/host/bin/pkg-config (1.6.3)
Run-time dependency zlib found: YES 1.2.11
Run-time dependency appleframeworks found: NO (tried framework)
Has header "cap-ng.h" : YES 
Library cap-ng found: YES
Library rt found: YES
Dependency libcurl skipped: feature curl disabled
Dependency sdl2 skipped: feature sdl disabled
Library bz2 skipped: feature bzip2 disabled
Dependency libpng skipped: feature vnc_png disabled
Dependency libjpeg skipped: feature vnc_jpeg disabled
Library sasl2 skipped: feature vnc_sasl disabled
Run-time dependency libkeyutils found: NO (tried pkgconfig)
Checking for function "gettid" : YES 
Run-time dependency fuse3 found: NO (tried pkgconfig)

../meson.build:1077:6: ERROR: Problem encountered: virtio-9p (virtfs) needs system emulation support

A full log can be found at /tmp/instance-1/output-1/build/host-qemu-6.0.0/build/meson-logs/meson-log.txt

ERROR: meson setup failed

make: *** [package/pkg-generic.mk:260: /tmp/instance-1/output-1/build/host-qemu-6.0.0/.stamp_configured] Error 1
make: Leaving directory '/tmp/instance-1/buildroot'