diff --git a/12to11.spec b/12to11.spec
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+# SPDX-License-Identifier: GPLv3+
+#
+# 12to11 - Wayland to X11 protocol translator
+# Active fork by fish4terrisa-MSDSM (original SourceForge project is unmaintained).
+#
+# On Fedora: libXpresent-devel is in the main repositories.
+# On EL9/EL10: libXpresent-devel is NOT in the main repos. Enable the
+#   xlibre COPR first:
+#     dnf copr enable @xlibre/xlibre-xserver
+#   or build/install libXpresent from source (https://gitlab.freedesktop.org/xorg/lib/libxpresent).
+#
+# The build uses the legacy imake/xmkmf build system (provided by the
+# 'imake' package, available in EPEL on EL9/EL10).
+
+%global commit b6745cc4236415983ff9f19a03f5c83a9def7429
+%global shortcommit %(c=%{commit}; echo ${c:0:7})
+%global snapdate 20260824
+
+Name:           12to11
+Version:        0
+Release:        0.1.%{snapdate}git%{shortcommit}%{?dist}
+Summary:        Wayland to X11 protocol translator
+
+License:        GPL-3.0-only
+URL:            https://github.com/fish4terrisa-MSDSM/12to11
+Source0:        %{url}/archive/%{commit}/12to11-%{commit}.tar.gz
+
+# Build dependencies
+# imake is in EPEL on EL9/EL10.
+BuildRequires:  make
+BuildRequires:  gcc
+BuildRequires:  imake
+BuildRequires:  gawk
+BuildRequires:  wayland-devel
+BuildRequires:  libX11-devel
+BuildRequires:  libXext-devel
+BuildRequires:  libxcb-devel
+BuildRequires:  pixman-devel
+BuildRequires:  libdrm-devel
+BuildRequires:  libXcursor-devel
+BuildRequires:  libxshmfence-devel
+BuildRequires:  libxkbfile-devel
+# libXpresent-devel: in Fedora main; in the xlibre COPR on EL9/EL10.
+BuildRequires:  libXpresent-devel
+# EGL + GLESv2 development files (libglvnd-devel provides the headers
+# and .so symlinks; mesa-libEGL-devel provides Mesa-specific EGL headers).
+BuildRequires:  mesa-libEGL-devel
+BuildRequires:  libglvnd-devel
+
+Requires:       libglvnd-egl%{?_isa}
+Requires:       libglvnd-gles%{?_isa}
+
+%description
+12to11 is a Wayland compositor that runs as a regular X11 client,
+displaying Wayland applications as normal X windows. It implements a
+broad set of Wayland protocols including wl_data_device_manager (clipboard),
+zwp_linux_dmabuf_v1, xdg_wm_base, zwp_text_input_manager_v3, and more.
+
+When built with EGL support (the default in this package), it uses
+OpenGL ES 2.0 for rendering, enabling YUV video format support and
+hardware-accelerated compositing.
+
+This is particularly useful for running Wayland-only applications
+(such as Waydroid) under X11 without a nested compositor like Weston.
+Clipboard sharing between Wayland clients and the X11 session is
+handled natively, without requiring external bridge scripts.
+
+This package tracks the actively maintained fork by
+fish4terrisa-MSDSM; the original SourceForge project has been
+unmaintained since 2022.
+
+%prep
+%autosetup -n 12to11-%{commit}
+
+%build
+# Generate Makefile from Imakefile using the legacy imake system.
+xmkmf -a
+
+# Build with EGL support (already enabled by default in 12to11.conf).
+# The Makefile picks up HaveEglSupport from 12to11.conf.
+%{make_build}
+
+%install
+%{make_install} DESTDIR=%{buildroot}
+
+# Install the manual page manually (imake's install.man target can be
+# unreliable across distros due to CppManTarget/nroff dependencies).
+install -D -p -m 0644 12to11.man %{buildroot}%{_mandir}/man1/12to11.1
+
+%files
+%license COPYING
+%doc README
+%{_bindir}/12to11
+%{_mandir}/man1/12to11.1*
+
+%changelog
+* Thu Sep 03 2026 Anders da Silva Rytter Hansen <andersrh@users.noreply.github.com> - 0-0.1.20260824gitb6745cc
+- Initial RPM package for 12to11 (fish4terrisa-MSDSM fork).
+- Built with EGL/GLESv2 rendering support.
+- Snapshot from commit b6745cc (2026-08-24).