add git

src/packages.mk

@@ -194,6 +194,17 @@ out/gettext/index.json: \
 	out/libxml2/index.json
 	$(call build,core,gettext)
 
+PHONY: git
+git: out/git/index.json
+out/git/index.json: \
+	src/tools/git/Containerfile \
+	binutils \
+	busybox \
+	gcc \
+	make \
+	musl
+	$(call build,tools,git)
+
 .PHONY: go
 go: out/go/index.json
 out/go/index.json: \

src/tools/git/Containerfile

@@ -0,0 +1,57 @@
+FROM scratch as base
+ENV SRC_VERSION=2.9.5
+ENV SRC_HASH=a4bea37ecb9a3fb5c0c8ef18c2f7eeaf8ccbcfec91f72f3bccfc6bf72a3e3902
+ENV SRC_FILE=git-${SRC_VERSION}.tar.xz
+ENV SRC_SITE=http://mirrors.edge.kernel.org/pub/software/scm/git/${SRC_FILE}
+
+FROM base as fetch
+ADD --checksum=sha256:${SRC_HASH} ${SRC_SITE} .
+
+FROM fetch as build
+COPY --from=busybox . /
+COPY --from=musl . /
+COPY --from=gcc . /
+COPY --from=binutils . /
+COPY --from=make . /
+COPY --from=zlib . /
+COPY --from=perl . /
+COPY --from=gettext . / 
+RUN tar -xvf $SRC_FILE
+WORKDIR git-${SRC_VERSION}
+RUN --network=none <<-EOF
+	set -eux
+	./configure \
+		--build=x86_64-unknown-linux-musl \
+		--host=x86_64-unknown-linux-musl \
+		--prefix=/usr \
+		--bindir=/bin \
+		--mandir=/usr/share/man \
+		--infodir=/usr/share/info \
+		--disable-nls \
+		--enable-readline \
+		--without-curses \
+		--without-bash-malloc \
+		--without-tcltk
+	make
+EOF
+
+FROM build as install
+RUN make DESTDIR=/rootfs install
+
+FROM base as test
+COPY --from=install /rootfs /
+COPY --from=zlib . /
+COPY --from=musl . /
+COPY --from=busybox . /
+RUN /bin/sh <<-EOF
+	set -eux
+	EXPECTED_GIT_VERSION="git version ${SRC_VERSION}"
+	GIT_VERSION=\$(git --version)
+	if [ "\$GIT_VERSION" != "\$EXPECTED_GIT_VERSION" ]; then
+	    echo "Expected git version is \$EXPECTED_GIT_VERSION, but got \$GIT_VERSION"
+	    exit 1
+	fi
+EOF
+
+FROM scratch as package
+COPY --from=install /rootfs /