.github: add Solaris/Illumos build

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

.github/scripts/solaris/install-pkg.sh

@@ -0,0 +1,68 @@
+#!/bin/sh
+#
+# Install xserver build dependencies on OpenIndiana (illumos), via IPS (`pkg`).
+#
+# OpenIndiana (unlike server-only OmniOS) is a desktop-capable illumos distro
+# and packages the full X stack — every X library, the protocol headers, Mesa
+# and the xcb-util family — under the single `openindiana.org` publisher in the
+# standard /usr layout. So everything is installable; nothing has to be built
+# from source here, and GLX can stay enabled (Mesa is packaged).
+#
+# FMRIs verified against the OpenIndiana Hipster catalog.
+#
+
+set -ex
+
+PATH="/usr/bin:/usr/sbin:/sbin:$PATH"
+export PATH
+
+pkg refresh || true
+
+# Build toolchain — MUST succeed. `pkg install` is transactional, so a single
+# unknown/ambiguous FMRI aborts the whole set; keeping this its own step
+# *without* `|| true` makes a bad FMRI fail loudly (and named) instead of
+# silently leaving us without a compiler/meson.
+pkg install -v --accept \
+    developer/gcc-14 \
+    developer/build/meson \
+    developer/build/ninja \
+    developer/build/pkg-config
+
+# Runtime + X libraries the server links against. Best-effort, one at a time, so
+# a single missing/misnamed FMRI only skips that package (and is named in the
+# log) rather than aborting the batch; meson will flag anything genuinely
+# required and absent.
+for pkg_fmri in \
+    runtime/python-313 \
+    library/zlib \
+    library/graphics/pixman \
+    system/library/freetype-2 \
+    x11/header/x11-protocols \
+    x11/header/xcb-protocols \
+    x11/font-util \
+    x11/library/libxau \
+    x11/library/libxcb \
+    x11/library/libxdmcp \
+    x11/library/libxext \
+    x11/library/libxfixes \
+    x11/library/libxrender \
+    x11/library/libxt \
+    x11/library/libx11 \
+    x11/library/xtrans \
+    x11/library/libxkbfile \
+    x11/library/libxfont2 \
+    x11/library/libfontenc \
+    x11/library/libxcvt \
+    x11/library/libxshmfence \
+    x11/library/libepoxy \
+    x11/library/xcb-util \
+    x11/library/xcb-util-wm \
+    x11/library/mesa
+do
+    # rc 0 = installed, rc 4 = already present / nothing to do — both fine.
+    rc=0
+    pkg install -v --accept "$pkg_fmri" || rc=$?
+    if [ "$rc" -ne 0 ] && [ "$rc" -ne 4 ]; then
+        echo "WARN: 'pkg install $pkg_fmri' failed (rc=$rc) — continuing (meson will flag it if required)"
+    fi
+done

.github/scripts/solaris/run-xserver-build.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+#
+# Build the X server inside an OpenIndiana (illumos) VM. Mirrors the BSD
+# run-xserver-build.sh scripts: install deps, then meson setup/compile/install.
+#
+
+set -e
+
+./.github/scripts/solaris/install-pkg.sh
+
+echo "--> running xserver build ...."
+
+PATH="/usr/bin:/usr/sbin:/sbin:$PATH"
+export PATH
+
+# OpenIndiana installs into the standard /usr layout; build 64-bit (the illumos
+# gcc still defaults to 32-bit) and point pkg-config at the amd64 .pc dir plus
+# the noarch share/pkgconfig (xorgproto protocol files).
+CFLAGS="-m64 ${CFLAGS:-}"
+LDFLAGS="-m64 ${LDFLAGS:-}"
+PKG_CONFIG_PATH="/usr/lib/amd64/pkgconfig:/usr/lib/pkgconfig:/usr/share/pkgconfig:${PKG_CONFIG_PATH:-}"
+export CFLAGS LDFLAGS PKG_CONFIG_PATH
+
+export MESON_BUILDDIR=_build
+
+rm -rf "$MESON_BUILDDIR"
+meson setup "$MESON_BUILDDIR" $MESON_ARGS
+meson configure "$MESON_BUILDDIR"
+meson compile -v -C "$MESON_BUILDDIR" $jobcount $ninja_args
+# tests not wired up for this platform yet
+# meson test -C "$MESON_BUILDDIR" --print-errorlogs $MESON_TEST_ARGS
+meson install --no-rebuild -C "$MESON_BUILDDIR" $MESON_INSTALL_ARGS