Fixes

Dockerfile

@@ -3,20 +3,27 @@ FROM archlinux:latest
 SHELL ["/usr/bin/bash", "-c"]
 
 # Update system and install base packages
-RUN pacman -Syu --noconfirm && \
-    pacman -S --noconfirm --needed \
+# Fix: archlinux:latest has corrupt pacman local db (missing desc files in overlay)
+# Step 1: upgrade base system (creates new layer, fixes stale db entries)
+RUN pacman-db-upgrade 2>/dev/null; \
+    for pkg in /var/lib/pacman/local/*/; do \
+      [ ! -f "${pkg}desc" ] && rm -rf "$pkg" 2>/dev/null; \
+    done; true
+RUN pacman -Syu --noconfirm
+# Step 2: clean stale entries from previous layer, then install build deps
+RUN for pkg in /var/lib/pacman/local/*/; do \
+      [ ! -f "${pkg}desc" ] && rm -rf "$pkg" 2>/dev/null; \
+    done; true
+RUN pacman -S --noconfirm --needed \
     base-devel bc jdk-openjdk file gawk gettext git go gperf \
     perl-json perl-xml-parser ncurses lzop make patchutils \
     python python-setuptools parted unzip wget curl \
     xorg-mkfontscale libxslt zip vim zstd rdfind automake \
     xmlstarlet rsync which sudo rpcsvc-proto perl-parse-yapp xorg-bdftopcf
 
-# Downgrade GCC to 14.x to avoid gnulib _Generic conflicts with GCC 15+
-RUN cd /tmp && \
-    curl -LO 'https://archive.archlinux.org/packages/g/gcc/gcc-14.2.1%2Br134%2Bgab884fffe3fc-1-x86_64.pkg.tar.zst' && \
-    curl -LO 'https://archive.archlinux.org/packages/g/gcc-libs/gcc-libs-14.2.1%2Br134%2Bgab884fffe3fc-1-x86_64.pkg.tar.zst' && \
-    pacman -U --noconfirm --overwrite='*' /tmp/gcc-*.pkg.tar.zst && \
-    rm -f /tmp/gcc-*.pkg.tar.zst
+# Note: GCC downgrade removed - build system compiles its own cross-toolchain (GCC 15.1).
+# Host GCC is only used for host tools. Fixes from projects/ArchR/packages/ handle
+# any GCC 15 incompatibilities in individual packages (spirv-tools, llvm, etc.)
 
 # Create build user
 RUN useradd -m -s /bin/bash docker && \
@@ -41,5 +48,8 @@ RUN if [ ! -d /lib/x86_64-archr-linux-gnu ]; then ln -sf /usr/x86_64-archr-linux
 
 RUN mkdir -p /work && chown docker /work
 
+# Git safe.directory for any user (env-file may override HOME)
+RUN git config --system --add safe.directory '*'
+
 WORKDIR /work
 USER docker

projects/ArchR/packages/devel/gettext/package.mk

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (C) 2026 ArchR (https://github.com/archr-linux/Arch-R)
+# Override: downgrade to 0.24 to avoid gnulib _Generic conflicts with GCC 15+
+
+PKG_NAME="gettext"
+PKG_VERSION="0.24"
+PKG_SHA256="e1620d518b26d7d3b16ac570e5018206e8b0d725fb65c02d048397718b5cf318"
+PKG_LICENSE="GPL"
+PKG_SITE="https://www.gnu.org/s/gettext/"
+PKG_URL="https://mirrors.kernel.org/gnu/gettext/${PKG_NAME}-${PKG_VERSION}.tar.xz"
+PKG_DEPENDS_HOST="make:host"
+PKG_DEPENDS_TARGET="autotools:host make:host gcc:host"
+PKG_LONGDESC="A program internationalization library and tools."
+PKG_BUILD_FLAGS="+local-cc"

projects/ArchR/packages/devel/m4/package.mk

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2026 ArchR (https://github.com/archr-linux/Arch-R)
+# Override: downgrade to 1.4.19 to avoid gnulib _Generic conflicts with GCC 15+
+# m4 1.4.20 ships gnulib with _Generic macros that produce syntax errors on GCC 15
+
+PKG_NAME="m4"
+PKG_VERSION="1.4.19"
+PKG_SHA256="63aede5c6d33b6d9b13511cd0be2cac046f2e70fd0a07aa9573a04a82783af96"
+PKG_LICENSE="GPL"
+PKG_SITE="http://www.gnu.org/software/m4/"
+PKG_URL="https://mirrors.kernel.org/gnu/m4/${PKG_NAME}-${PKG_VERSION}.tar.xz"
+PKG_DEPENDS_HOST="ccache:host"
+PKG_LONGDESC="The m4 macro processor."
+PKG_BUILD_FLAGS="-cfg-libs:host"
+
+PKG_CONFIGURE_OPTS_HOST="gl_cv_func_gettimeofday_clobber=no --target=${TARGET_NAME}"
+
+post_makeinstall_host() {
+  make prefix=${SYSROOT_PREFIX}/usr install
+}