mumble cmake

 cmake ../mumble
-- ##################################################
-- Mumble release ID:
-- Mumble version:          1.4.0.0
-- Architecture:            x64
-- Build type:              Release
-- ##################################################
-- Qt5 component found: Core | Version: 5.15.2
-- Qt5 component found: Network | Version: 5.15.2
-- Qt5 component found: Xml | Version: 5.15.2
-- OpenSSL component found: Crypto | Version: 1.1.1k
-- OpenSSL component found: SSL | Version: 1.1.1k
-- Qt5 component found: Concurrent | Version: 5.15.2
-- Qt5 component found: Sql | Version: 5.15.2
-- Qt5 component found: Svg | Version: 5.15.2
-- Qt5 component found: Widgets | Version: 5.15.2
-- X11 component found: Xext
-- X11 component found: Xi
-- Opus version: 1.3.1
-- Check SIMD support by compiler
-- The following features have been enabled:

 * STACK_PROTECTOR, Use stack protection
 * FLOAT_API, compile with the floating point API (for machines with float library)
 * X86_MAY_HAVE_SSE, does runtime check for SSE1 support
 * X86_MAY_HAVE_SSE2, does runtime check for SSE2 support
 * X86_MAY_HAVE_SSE4_1, does runtime check for SSE4_1 support
 * X86_MAY_HAVE_AVX, does runtime check for AVX support
 * X86_PRESUME_SSE, assume target CPU has SSE1 support
 * X86_PRESUME_SSE2, assume target CPU has SSE2 support

-- The following features have been disabled:

 * USE_ALLOCA, Use alloca for stack arrays (on non-C99 compilers)
 * CUSTOM_MODES, Enable non-Opus modes, e.g. 44.1 kHz & 2^n frames
 * BUILD_PROGRAMS, Build programs
 * FIXED_POINT, compile as fixed-point (for machines without a fast enough FPU)
 * X86_PRESUME_SSE4_1, assume target CPU has SSE4_1 support
 * X86_PRESUME_AVX, assume target CPU has AVX support

-- Disabling warnings for targets: opus
-- Disabling warnings for targets: celt
-- Disabling warnings for targets: speex
-- Disabling warnings for targets: rnnoise
-- Qt5 component found: DBus | Version: 5.15.2
-- Qt5 component found: LinguistTools | Version: 5.15.2
-- Qt5 component found: Sql | Version: 5.15.2
-- File: /home/domokos/src/mumble-build/src/murmur/murmur_autogen
-- Qt5 component found: DBus | Version: 5.15.2
-- Ice component found: Ice | Version: 3.7.5
-- Ice component found: IceSSL | Version: 3.7.5
-- Ice optional component found: IceDiscovery | Version: 3.7.5
-- Ice optional component found: IceLocatorDiscovery | Version: 3.7.5
CMake Error at overlay_gl/CMakeLists.txt:39 (message):
  Can't find the 32bit version of sys/cdefs.h - did you install g++-multilib?


-- Configuring incomplete, errors occurred!
See also "/home/domokos/src/mumble-build/CMakeFiles/CMakeOutput.log".
See also "/home/domokos/src/mumble-build/CMakeFiles/CMakeError.log".