Hi there.
I'm trying to build dxvk on debian bullseye and get many errors.

$ ./package-release.sh master build --no-package
The Meson build system
Version: 0.52.1
Source dir: /home/rtentser/Sources/dxvk
Build dir: /home/rtentser/Sources/dxvk/build/dxvk-master/build.64
Build type: cross build
Project name: dxvk
Project version: v1.5
C compiler for the build machine: cc (gcc 9.2.1 "cc (Debian 9.2.1-22) 9.2.1 20200104")
C linker for the build machine: GNU ld.bfd 2.33.1
C++ compiler for the build machine: c++ (gcc 9.2.1 "c++ (Debian 9.2.1-22) 9.2.1 20200104")
C++ linker for the build machine: GNU ld.bfd 2.33.1
C compiler for the host machine: x86_64-w64-mingw32-gcc (gcc 8.3.0 "x86_64-w64-mingw32-gcc (GCC) 8.3-win32 20191201")
C linker for the host machine: GNU ld.bfd 2.33.1
C++ compiler for the host machine: x86_64-w64-mingw32-g++ (gcc 8.3.0 "x86_64-w64-mingw32-g++ (GCC) 8.3-win32 20191201")
C++ linker for the host machine: GNU ld.bfd 2.33.1
Build machine cpu family: x86_64
Build machine cpu: x86_64
Host machine cpu family: x86_64
Host machine cpu: x86_64
Target machine cpu family: x86_64
Target machine cpu: x86_64
Checking if "winelib check" compiles: NO 
Program x86_64-w64-mingw32-windres found: YES (/usr/bin/x86_64-w64-mingw32-windres)
Library vulkan-1 found: YES
Library d3d9 found: YES
Library d3d11 found: YES
Library dxgi found: YES
Library d3dcompiler_43 found: YES
Library d3dcompiler_47 found: YES
Program glslangValidator found: YES (/usr/bin/glslangValidator)
Run-time dependency threads found: YES 
Dependency threads found: YES (cached)
Build targets in project: 13
Found ninja-1.9.0 at /usr/bin/ninja
[4/259] Compiling C++ object 'src/util/ed6d25d@@util@sta/util_gdi.cpp.obj'.
FAILED: src/util/ed6d25d@@util@sta/util_gdi.cpp.obj 
x86_64-w64-mingw32-g++ -Isrc/util/ed6d25d@@util@sta -Isrc/util -I../../../src/util -I../../.././include -fdiagnostics-color=always -pipe -Wall -Winvalid-pch -Wnon-virtual-dtor -std=c++17 -O3 -DNOMINMAX -MD -MQ 'src/util/ed6d25d@@util@sta/util_gdi.cpp.obj' -MF 'src/util/ed6d25d@@util@sta/util_gdi.cpp.obj.d' -o 'src/util/ed6d25d@@util@sta/util_gdi.cpp.obj' -c ../../../src/util/util_gdi.cpp
In file included from ../../../src/util/util_gdi.cpp:2:
../../../src/util/log/log.h:50:10: error: ‘mutex’ in namespace ‘std’ does not name a type
     std::mutex    m_mutex;
          ^~~~~
../../../src/util/log/log.h:50:5: note: ‘std::mutex’ is defined in header ‘<mutex>’; did you forget to ‘#include <mutex>’?
../../../src/util/log/log.h:7:1:
+#include <mutex>
 #include <string>
../../../src/util/log/log.h:50:5:
     std::mutex    m_mutex;
     ^~~
[6/259] Compiling C++ object 'src/util/ed6d25d@@util@sta/util_luid.cpp.obj'.
FAILED: src/util/ed6d25d@@util@sta/util_luid.cpp.obj 
x86_64-w64-mingw32-g++ -Isrc/util/ed6d25d@@util@sta -Isrc/util -I../../../src/util -I../../.././include -fdiagnostics-color=always -pipe -Wall -Winvalid-pch -Wnon-virtual-dtor -std=c++17 -O3 -DNOMINMAX -MD -MQ 'src/util/ed6d25d@@util@sta/util_luid.cpp.obj' -MF 'src/util/ed6d25d@@util@sta/util_luid.cpp.obj.d' -o 'src/util/ed6d25d@@util@sta/util_luid.cpp.obj' -c ../../../src/util/util_luid.cpp
In file included from ../../../src/util/util_luid.cpp:4:
../../../src/util/./log/log.h:50:10: error: ‘mutex’ in namespace ‘std’ does not name a type
     std::mutex    m_mutex;
          ^~~~~
../../../src/util/./log/log.h:50:5: note: ‘std::mutex’ is defined in header ‘<mutex>’; did you forget to ‘#include <mutex>’?
../../../src/util/./log/log.h:7:1:
+#include <mutex>
 #include <string>
../../../src/util/./log/log.h:50:5:
     std::mutex    m_mutex;
     ^~~
../../../src/util/util_luid.cpp: In function ‘LUID dxvk::GetAdapterLUID(UINT)’:
../../../src/util/util_luid.cpp:12:17: error: ‘mutex’ in namespace ‘std’ does not name a type
     static std::mutex        s_mutex;
                 ^~~~~
../../../src/util/util_luid.cpp:12:12: note: ‘std::mutex’ is defined in header ‘<mutex>’; did you forget to ‘#include <mutex>’?
../../../src/util/util_luid.cpp:5:1:
+#include <mutex>
 
../../../src/util/util_luid.cpp:12:12:
     static std::mutex        s_mutex;
            ^~~
../../../src/util/util_luid.cpp:15:26: error: ‘mutex’ is not a member of ‘std’
     std::lock_guard<std::mutex> lock(s_mutex);
                          ^~~~~
../../../src/util/util_luid.cpp:15:26: note: ‘std::mutex’ is defined in header ‘<mutex>’; did you forget to ‘#include <mutex>’?
../../../src/util/util_luid.cpp:15:31: error: template argument 1 is invalid
     std::lock_guard<std::mutex> lock(s_mutex);
                               ^
../../../src/util/util_luid.cpp:15:38: error: ‘s_mutex’ was not declared in this scope
     std::lock_guard<std::mutex> lock(s_mutex);
                                      ^~~~~~~
../../../src/util/util_luid.cpp:15:33: warning: unused variable ‘lock’ [-Wunused-variable]
     std::lock_guard<std::mutex> lock(s_mutex);
                                 ^~~~
ninja: build stopped: subcommand failed.

I've tried master, v1.5.0, v1.4.6 and v1.3.4.