root@ziomario-Z390-AORUS-PRO:/home/ziomario/Scrivania/Collabora/virglrenderer# mkdir -p build
root@ziomario-Z390-AORUS-PRO:/home/ziomario/Scrivania/Collabora/virglrenderer# ls
build  ci  config.h.meson  COPYING  docs  meson.build  meson_options.txt  perf-testing  src  tests  virglrenderer.pc.in  vtest
root@ziomario-Z390-AORUS-PRO:/home/ziomario/Scrivania/Collabora/virglrenderer# rm -rf build/*
root@ziomario-Z390-AORUS-PRO:/home/ziomario/Scrivania/Collabora/virglrenderer# meson build && ninja-build -C build
The Meson build system
Version: 0.55.3
Source dir: /home/ziomario/Scrivania/Collabora/virglrenderer
Build dir: /home/ziomario/Scrivania/Collabora/virglrenderer/build
Build type: native build
Project name: virglrenderer
Project version: 0.8.2
C compiler for the host machine: cc (gcc 10.2.0 "cc (Ubuntu 10.2.0-13ubuntu1) 10.2.0")
C linker for the host machine: cc ld.bfd 2.35.1
Host machine cpu family: x86_64
Host machine cpu: x86_64
Compiler for C supports arguments -Werror=implicit-function-declaration: YES
Compiler for C supports arguments -Werror=missing-prototypes: YES
Compiler for C supports arguments -Wmissing-prototypes: YES
Compiler for C supports arguments -Werror=int-to-pointer-cast: YES
Compiler for C supports arguments -Wno-overlength-strings -Woverlength-strings: YES
Compiler for C supports arguments -fvisibility=hidden: YES
Program python3 found: YES (/usr/bin/python3)
Found pkg-config: /usr/bin/pkg-config (0.29.2)
Run-time dependency libdrm found: YES 2.4.102
Run-time dependency threads found: YES
Run-time dependency epoxy found: YES 1.5.4
Library m found: YES
Has header "sys/uio.h" : YES
Has header "dlfcn.h" : YES
Has header "pthread.h" : YES
Has header "sys/eventfd.h" : YES
Has header "sys/select.h" : YES
Has header "epoxy/egl.h" with dependency epoxy: YES
Run-time dependency gbm found: YES 20.2.6
Has header "epoxy/glx.h" with dependency epoxy: YES
Run-time dependency x11 found: YES 1.6.12
Configuring config.h using configuration
Configuring virglrenderer.pc using configuration
Message:

Configuration summary:

   prefix:    /usr/local
   libdir:    lib/x86_64-linux-gnu

   c_args:

   egl:       yes
   glx:       yes

   minigbm_alloc: no

   tests:     no
   fuzzer:    no
   tracing:   none

Build targets in project: 5

Found ninja-1.10.0 at /usr/bin/ninja
ninja-build: command not found
root@ziomario-Z390-AORUS-PRO:/home/ziomario/Scrivania/Collabora/virglrenderer#

root@ziomario-Z390-AORUS-PRO:/home/ziomario/Scrivania/Collabora/virglrenderer# meson compile

ERROR: Current directory is not a meson build directory: `/home/ziomario/Scrivania/Collabora/virglrenderer`.
Please specify a valid build dir or change the working directory to it.
It is also possible that the build directory was generated with an old
meson version. Please regenerate it in this case.
root@ziomario-Z390-AORUS-PRO:/home/ziomario/Scrivania/Collabora/virglrenderer#