Eigen Compiler Suite

I see there is a difference between the Windows installer and the installation from the makefile in the tar archive.
The Windows installer install additional files under the folders:

• libraries/cpp/api
• libraries/cpp/def

I guess the intension is to also include this in the makefile installer?

This line in the makefile :

    @cp $(wildcard $(pdf)) $(DESTDIR)$(docdir)

fails for me as I do not have TeX tooling installed.
This should perhaps be:

    @cp $(wildcard $(pdf)) $(DESTDIR)$(docdir) || true

Some empty directory src/debug is also created, but this
is just i minor issue.

Building with clang worked fine:

Linux lindev 6.17.4-2-pve #1 SMP PREEMPT_DYNAMIC PMX 6.17.4-2 (2025-12-19T07:49Z) x86_64 GNU/Linux
clang version 22.1.8
Target: x86_64-pc-linux-gnu
Thread model: posix

Building with gcc stopped for me:

In file included from m68kgenerator.cpp:19:
asmgeneratorcontext.hpp:146:22: error: ‘virtual ECS::Object::Section::Name ECS::Assembly::Generator::Context::GetAddres(const ECS::Code::Operand&) const’ was hidden [-Werror=overloaded-virtual=]
  146 |         virtual auto GetAddress (const Code::Operand& operand) const -> Code::Section::Name {return operand.address;}
      |                      ^~~~~~~~~~
compilation terminated due to -Wfatal-errors.
cc1plus: all warnings being treated as errors
make: *** [makefile:1180: tools/m68kgenerator.o] Error 1

this was GCC:

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/16/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --enable-languages=ada,c,c++,d,fortran,go,lto,m2,objc,obj-c++,rust,cobol --enable-bootstrap --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://gitlab.archlinux.org/archlinux/packaging/packages/gcc/-/issues --with-build-config=bootstrap-lto --with-gcc-major-version-only --with-linker-hash-style=gnu --with-system-zlib --enable-cet=auto --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-default-ssp --enable-gnu-indirect-function --enable-gnu-unique-object --enable-libstdcxx-backtrace --enable-link-serialization=1 --enable-linker-build-id --enable-lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --disable-fixincludes --disable-libssp --disable-libstdcxx-pch --disable-werror
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.1.1 20260725 (GCC)

Otherwise initial running of unit tests of my standard library project was fine.