FWIW building Ladybird on 32bit x86 Linux does not work

[   77s] /usr/bin/ccache /usr/bin/c++ -DENABLE_COMPILETIME_FORMAT_CHECK -DLibJIT_EXPORTS -I/home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d -I/home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Userland/Services -I/home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Userland/Libraries -I/home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Ladybird/build/Lagom -I/home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Ladybird/build/Lagom/Userland/Services -I/home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Ladybird/build/Lagom/Userland/Libraries -I/home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Meta/Lagom/../.. -I/home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Meta/Lagom/../../Userland -I/home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Meta/Lagom/../../Userland/Libraries -I/home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Meta/Lagom/../../Userland/Services -I/home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Ladybird/build -fomit-frame-pointer -O2 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type -flto=auto -g -O2 -g -DNDEBUG -std=c++20 -fPIC -Wall -Wextra -Wno-invalid-offsetof -Wno-unknown-warning-option -Wno-unused-command-line-argument -fdiagnostics-color=always -fno-exceptions -ffp-contract=off -Werror -Wno-expansion-to-defined -Wno-literal-suffix -Wno-dangling-reference -fno-semantic-interposition -fvisibility-inlines-hidden -Wno-maybe-uninitialized -Wno-shorten-64-to-32 -fsigned-char -ggnu-pubnames -fPIC -O2 -g1 -MD -MT Lagom/Userland/Libraries/LibJIT/CMakeFiles/LibJIT.dir/GDBElf.cpp.o -MF Lagom/Userland/Libraries/LibJIT/CMakeFiles/LibJIT.dir/GDBElf.cpp.o.d -o Lagom/Userland/Libraries/LibJIT/CMakeFiles/LibJIT.dir/GDBElf.cpp.o -c /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Userland/Libraries/LibJIT/GDBElf.cpp
[   77s] In file included from /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/AK/Traits.h:9,
[   77s]                  from /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/AK/TypedTransfer.h:9,
[   77s]                  from /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/AK/Array.h:13,
[   77s]                  from /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/AK/Span.h:9,
[   77s]                  from /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/AK/StringView.h:14,
[   77s]                  from /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/AK/Error.h:9,
[   77s]                  from /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/AK/FixedArray.h:10,
[   77s]                  from /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Userland/Libraries/LibELF/ELFBuild.h:12,
[   77s]                  from /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Userland/Libraries/LibJIT/GDBElf.cpp:7:
[   77s] /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/AK/BitCast.h: In instantiation of 'constexpr T AK::bit_cast(const U&) [with T = long long unsigned int; U = const unsigned char*]':
[   77s] /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/Userland/Libraries/LibJIT/GDBElf.cpp:29:37:   required from here
[   77s] /home/abuild/rpmbuild/BUILD/serenity-0+1703193264.db34ee357d/AK/BitCast.h:17:31: error: '__builtin_bit_cast' source size '4' not equal to destination type size '8'
[   77s]    17 |     return __builtin_bit_cast(T, a);
[   77s]       |                               ^