Add Containerfiles for SDCC

Provide SDCC in Alpine- and Debian-based containers. They can be used to
build EC if it was cloned standalone with podman, e.g.:

    make -C containers ec-alpine
    podman run -it --rm -v $PWD:/workspace:Z system76/ec-alpine:latest make BOARD=system76/oryp8

Signed-off-by: Tim Crawford <[email protected]>

containers/Makefile

@@ -0,0 +1,28 @@
+# SPDX-License-Identifier: GPL-3.0-only
+
+# Disable built-in rules and variables
+MAKEFLAGS += -rR
+
+PODMAN := $(shell command -v podman)
+
+SDCC_REPO := https://svn.code.sf.net/p/sdcc/code
+# Last rev to trunk before tagging 4.3.3
+SDCC_REV := 14376
+
+.PHONY: ec-alpine
+ec-alpine:
+	$(PODMAN) build \
+		--tag system76/$@:latest \
+		--build-arg=SDCC_REPO="$(SDCC_REPO)" \
+		--build-arg=SDCC_REV="$(SDCC_REV)" \
+		--file Containerfile \
+		$@
+
+.PHONY: ec-debian
+ec-debian:
+	$(PODMAN) build \
+		--tag system76/$@:latest \
+		--build-arg=SDCC_REPO="$(SDCC_REPO)" \
+		--build-arg=SDCC_REV="$(SDCC_REV)" \
+		--file Containerfile \
+		$@

containers/ec-alpine/Containerfile

@@ -0,0 +1,58 @@
+# A container for Small Device C Compiler based on Alpine
+
+ARG CONTAINER_IMAGE="alpine:3.18.4"
+
+FROM ${CONTAINER_IMAGE} as sdcc-build
+ARG SDCC_REPO
+ARG SDCC_REV
+WORKDIR /tmp
+
+RUN apk update && \
+    apk add --no-cache \
+        autoconf \
+        automake \
+        bison \
+        boost-dev \
+        ca-certificates \
+        flex \
+        g++ \
+        gcc \
+        make \
+        subversion \
+        zlib-dev
+
+RUN svn checkout \
+        --depth infinity \
+        --revision ${SDCC_REV} \
+        ${SDCC_REPO}/trunk/sdcc \
+        sdcc
+
+# PIC requires gputils, which is not available on Alpine
+RUN cd sdcc && \
+    sh ./configure \
+        --disable-pic14-port \
+        --disable-pic16-port \
+        --disable-non-free \
+        --prefix= && \
+    make -j $(nproc) && \
+    make install DESTDIR=/opt/sdcc
+
+FROM ${CONTAINER_IMAGE}
+ARG SDCC_REV
+COPY --from=sdcc-build /opt/sdcc /opt/sdcc
+ENV SDCC_REV "${SDCC_REV}"
+ENV SDCC_PATH "/opt/sdcc"
+ENV PATH "${SDCC_PATH}/bin:$PATH"
+
+# NOTE: Using SDCC requires libstdc++ installed
+RUN apk update && \
+    apk add --no-cache \
+        bash \
+        binutils \
+        git \
+        libstdc++ \
+        make \
+        xxd
+
+WORKDIR /workspace
+CMD ["bash"]

containers/ec-debian/Containerfile

@@ -0,0 +1,55 @@
+# A container for Small Device C Compiler based on Debian
+
+ARG CONTAINER_IMAGE="debian:12.2"
+
+FROM ${CONTAINER_IMAGE} as sdcc-build
+ARG SDCC_REPO
+ARG SDCC_REV
+WORKDIR /tmp
+
+RUN apt-get --quiet update && \
+    apt-get --quiet install --no-install-recommends --assume-yes \
+        autoconf \
+        automake \
+        bison \
+        ca-certificates \
+        flex \
+        g++ \
+        gcc \
+        gputils \
+        libboost-dev \
+        make \
+        subversion \
+        zlib1g-dev \
+    && apt-get clean
+
+RUN svn checkout \
+        --depth infinity \
+        --revision ${SDCC_REV} \
+        ${SDCC_REPO}/trunk/sdcc \
+        sdcc
+
+RUN cd sdcc && \
+    sh ./configure \
+        --disable-non-free \
+        --prefix= && \
+    make -j $(nproc) && \
+    make install DESTDIR=/opt/sdcc
+
+FROM ${CONTAINER_IMAGE}
+COPY --from=sdcc-build /opt/sdcc /opt/sdcc
+ENV SDCC_REV "${SDCC_REV}"
+ENV SDCC_PATH "/opt/sdcc"
+ENV PATH "${SDCC_PATH}/bin:$PATH"
+
+RUN apt-get --quiet update && \
+    apt-get --quiet install --no-install-recommends --assume-yes \
+        bash \
+        binutils \
+        git \
+        make \
+        xxd \
+    && apt-get clean
+
+WORKDIR /workspace
+CMD ["bash"]

scripts/lint/01-spdx-tags.sh

@@ -23,6 +23,8 @@ EXCLUDES=(
     # Ignore dotfiles
     ':!:\.*'
     ':!:**/\.*'
+    # Ignore container files
+    ':!:**/Containerfile*'
 )
 
 needs_tag=()