osbuilder: Remove musl installations

Remove a lot of cruft of musl installations -- we needed those for the
Go agent, but Rustup just takes care of everything. aarch64 on
Debian-based & Alpine is an exception -- create a symlink
`aarch64-linux-musl-gcc` to `musl-tools`'s `musl-gcc` or `gcc` on
Alpine. This is unified -- arch-specific Dockerfiles are removed.

Signed-off-by: Jakob Naucke <jakob.naucke@ibm.com>

tools/osbuilder/dracut/Dockerfile.in

@@ -36,7 +36,4 @@ RUN zypper --non-interactive refresh; \
     zypper --non-interactive clean --all;
 
 
-# This will install the proper golang to build Kata components
-@INSTALL_MUSL@
-@INSTALL_GO@
 @INSTALL_RUST@

tools/osbuilder/rootfs-builder/alpine/Dockerfile.in

@@ -26,3 +26,5 @@ RUN apk update && apk add --no-cache \
     musl-dev \
     protoc \
     tar
+# aarch64 requires this name -- link for all
+RUN ln -s /usr/bin/gcc "/usr/bin/$(uname -m)-linux-musl-gcc"

tools/osbuilder/rootfs-builder/clearlinux/Dockerfile.in

@@ -37,5 +37,4 @@ RUN dnf -y update && dnf install -y \
     dnf clean all
 
 # This will install the proper packages to build Kata components
-@INSTALL_MUSL@
 @INSTALL_RUST@

tools/osbuilder/rootfs-builder/debian/Dockerfile.in

@@ -27,14 +27,14 @@ RUN apt-get update && apt-get --no-install-recommends install -y \
     libstdc++-8-dev \
     m4 \
     make \
-    musl \
-    musl-dev \
     musl-tools \
     sed \
     systemd \
     tar \
     vim \
     wget
+# aarch64 requires this name -- link for all
+RUN ln -s /usr/bin/musl-gcc "/usr/bin/$(uname -m)-linux-musl-gcc"
 
 # This will install the proper packages to build Kata components
 @INSTALL_RUST@

tools/osbuilder/rootfs-builder/rootfs.sh

@@ -14,7 +14,6 @@ script_name="${0##*/}"
 script_dir="$(dirname $(readlink -f $0))"
 AGENT_VERSION=${AGENT_VERSION:-}
 RUST_VERSION="null"
-MUSL_VERSION=${MUSL_VERSION:-"null"}
 AGENT_BIN=${AGENT_BIN:-kata-agent}
 AGENT_INIT=${AGENT_INIT:-no}
 KERNEL_MODULES_DIR=${KERNEL_MODULES_DIR:-""}
@@ -335,11 +334,6 @@ build_rootfs_distro()
 
 	echo "Required rust version: $RUST_VERSION"
 
-	detect_musl_version ||
-		die "Could not detect the required musl version for AGENT_VERSION='${AGENT_VERSION:-main}'."
-
-	echo "Required musl version: $MUSL_VERSION"
-
 	if [ -z "${USE_DOCKER}" ] && [ -z "${USE_PODMAN}" ]; then
 		info "build directly"
 		build_rootfs ${ROOTFS_DIR}
@@ -544,7 +538,6 @@ EOT
 			LIBC=gnu
 			echo "WARNING: Forcing LIBC=gnu because $ARCH has no musl Rust target"
 		fi
-		[ "$LIBC" == "musl" ] && bash ${script_dir}/../../../ci/install_musl.sh
 		test -r "${HOME}/.cargo/env" && source "${HOME}/.cargo/env"
 		# rust agent needs ${arch}-unknown-linux-${LIBC}
 		if ! (rustup show | grep -v linux-${LIBC} > /dev/null); then
@@ -555,7 +548,6 @@ EOT
 			bash ${script_dir}/../../../ci/install_rust.sh ${RUST_VERSION}
 		fi
 		test -r "${HOME}/.cargo/env" && source "${HOME}/.cargo/env"
-		[ "$ARCH" == "aarch64" ] && OLD_PATH=$PATH && export PATH=$PATH:/usr/local/musl/bin
 
 		agent_dir="${script_dir}/../../../src/agent/"
 
@@ -577,7 +569,6 @@ EOT
 		make clean
 		make LIBC=${LIBC} INIT=${AGENT_INIT} SECCOMP=${SECCOMP}
 		make install DESTDIR="${ROOTFS_DIR}" LIBC=${LIBC} INIT=${AGENT_INIT}
-		[ "$ARCH" == "aarch64" ] && export PATH=$OLD_PATH && rm -rf /usr/local/musl
 		if [ "${SECCOMP}" == "yes" ]; then
 			rm -rf "${libseccomp_install_dir}" "${gperf_install_dir}"
 		fi

tools/osbuilder/rootfs-builder/template/Dockerfile.template

@@ -14,5 +14,4 @@ FROM ${IMAGE_REGISTRY}/@distro@:@OS_VERSION@
 # RUN commands
 
 # This will install the proper packages to build Kata components
-@INSTALL_MUSL@
 @INSTALL_RUST@

tools/osbuilder/rootfs-builder/ubuntu/Dockerfile.in

@@ -31,15 +31,15 @@ RUN apt-get update && apt-get --no-install-recommends install -y \
     libstdc++-8-dev \
     m4 \
     make \
-    musl \
-    musl-dev \
     musl-tools \
     protobuf-compiler \
     sed \
     systemd \
     tar \
     vim \
     wget
+# aarch64 requires this name -- link for all
+RUN ln -s /usr/bin/musl-gcc "/usr/bin/$(uname -m)-linux-musl-gcc"
 
 # This will install the proper packages to build Kata components
 @INSTALL_RUST@

tools/osbuilder/scripts/lib.sh

@@ -7,7 +7,6 @@
 set -e
 
 KATA_REPO=${KATA_REPO:-github.com/kata-containers/kata-containers}
-MUSL_VERSION=${MUSL_VERSION:-"null"}
 # Give preference to variable set by CI
 yq_file="${script_dir}/../../../ci/install_yq.sh"
 kata_versions_file="${script_dir}/../../../versions.yaml"
@@ -204,68 +203,12 @@ generate_dockerfile()
 	dir="$1"
 	[ -d "${dir}" ] || die "${dir}: not a directory"
 
-	local architecture=$(uname -m)
-	local rustarch=${architecture}
-	local muslarch=${architecture}
-	local libc=musl
-	case "$(uname -m)" in
-		"ppc64le")
-			rustarch=powerpc64le
-			muslarch=powerpc64
-			libc=gnu
-			;;
-		"s390x")
-			libc=gnu
-			;;
-
-		*)
-			;;
-	esac
+	local rustarch=$(uname -m)
+	[ "$rustarch" = ppc64le ] && rustarch=powerpc64le
 
 	[ -n "${http_proxy:-}" ] && readonly set_proxy="RUN sed -i '$ a proxy="${http_proxy:-}"' /etc/dnf/dnf.conf /etc/yum.conf; true"
 
 	# Rust agent
-	# rust installer should set path apropiately, just in case
-	# install musl for compiling rust-agent
-	local musl_source_url="https://git.zv.io/toolchains/musl-cross-make.git"
-	local musl_source_dir="musl-cross-make"
-	install_musl=
-	if [ "${muslarch}" == "aarch64" ]; then
-		local musl_tar="${muslarch}-linux-musl-native.tgz"
-		local musl_dir="${muslarch}-linux-musl-native"
-		local aarch64_musl_target="aarch64-linux-musl"
-		install_musl="
-RUN cd /tmp; \
-	mkdir -p /usr/local/musl/; \
-	if curl -sLO --fail https://musl.cc/${musl_tar}; then \
-		tar -zxf ${musl_tar}; \
-		cp -r ${musl_dir}/* /usr/local/musl/; \
-	else \
-		git clone ${musl_source_url}; \
-		TARGET=${aarch64_musl_target} make -j$(nproc) -C ${musl_source_dir} install; \
-		cp -r ${musl_source_dir}/output/* /usr/local/musl/; \
-		cp /usr/local/musl/bin/aarch64-linux-musl-g++ /usr/local/musl/bin/g++; \
-	fi
-ENV PATH=\$PATH:/usr/local/musl/bin
-RUN ln -sf /usr/local/musl/bin/g++ /usr/bin/g++
-"
-	else
-		local musl_tar="musl-${MUSL_VERSION}.tar.gz"
-		local musl_dir="musl-${MUSL_VERSION}"
-		install_musl="
-RUN pushd /root; \
-    curl -sLO https://www.musl-libc.org/releases/${musl_tar}; tar -zxf ${musl_tar}; \
-	cd ${musl_dir}; \
-	sed -i \"s/^ARCH = .*/ARCH = ${muslarch}/g\" dist/config.mak; \
-	./configure > /dev/null 2>\&1; \
-	make > /dev/null 2>\&1; \
-	make install > /dev/null 2>\&1; \
-	echo \"/usr/local/musl/lib\" > /etc/ld-musl-${muslarch}.path; \
-	popd
-ENV PATH=\$PATH:/usr/local/musl/bin
-"
-	fi
-
 	readonly install_rust="
 RUN curl --proto '=https' --tlsv1.2 https://sh.rustup.rs -sSLf --output /tmp/rust-init; \
     chmod a+x /tmp/rust-init; \
@@ -280,31 +223,12 @@ RUN . /root/.cargo/env; \
 RUN ln -sf /usr/bin/g++ /bin/musl-g++
 "
 	pushd "${dir}"
-	dockerfile_template="Dockerfile.in"
-	dockerfile_arch_template="Dockerfile-${architecture}.in"
-	# if arch-specific docker file exists, swap the univesal one with it.
-        if [ -f "${dockerfile_arch_template}" ]; then
-                dockerfile_template="${dockerfile_arch_template}"
-        else
-                [ -f "${dockerfile_template}" ] || die "${dockerfile_template}: file not found"
-        fi
-
-	# ppc64le and s390x have no musl target
-	if [ "${architecture}" == "ppc64le" ] || [ "${architecture}" == "s390x" ]; then
-		sed \
-			-e "s|@OS_VERSION@|${OS_VERSION:-}|g" \
-			-e "s|@INSTALL_MUSL@||g" \
-			-e "s|@INSTALL_RUST@|${install_rust//$'\n'/\\n}|g" \
-			-e "s|@SET_PROXY@|${set_proxy:-}|g" \
-			"${dockerfile_template}" > Dockerfile
-	else
-		sed \
-			-e "s|@OS_VERSION@|${OS_VERSION:-}|g" \
-			-e "s|@INSTALL_MUSL@|${install_musl//$'\n'/\\n}|g" \
-			-e "s|@INSTALL_RUST@|${install_rust//$'\n'/\\n}|g" \
-			-e "s|@SET_PROXY@|${set_proxy:-}|g" \
-			"${dockerfile_template}" > Dockerfile
-	fi
+
+	sed \
+		-e "s#@OS_VERSION@#${OS_VERSION:-}#g" \
+		-e "s#@INSTALL_RUST@#${install_rust//$'\n'/\\n}#g" \
+		-e "s#@SET_PROXY@#${set_proxy:-}#g" \
+		Dockerfile.in > Dockerfile
 	popd
 }
 
@@ -345,17 +269,6 @@ detect_rust_version()
 	[ -n "$RUST_VERSION" ]
 }
 
-detect_musl_version()
-{
-	info "Detecting musl version"
-    local yq_path="externals.musl.version"
-
-	info "Get musl version from ${kata_versions_file}"
-	MUSL_VERSION="$(get_package_version_from_kata_yaml "$yq_path")"
-
-	[ -n "$MUSL_VERSION" ]
-}
-
 before_starting_container() {
 	return 0
 }

tools/osbuilder/tests/test_images.sh

@@ -640,8 +640,6 @@ test_dracut()
 		die "Could not detect the required Go version for AGENT_VERSION='${AGENT_VERSION:-master}'."
 	detect_rust_version ||
 		die "Could not detect the required rust version for AGENT_VERSION='${AGENT_VERSION:-master}'."
-	detect_musl_version ||
-		die "Could not detect the required musl version for AGENT_VERSION='${AGENT_VERSION:-master}'."
 
 	generate_dockerfile ${dracut_dir}
 	info "Creating container for dracut"

versions.yaml

@@ -233,19 +233,6 @@ externals:
       .*/v?(\d\S+)\.tar\.gz
     version: "v1.0.1"
 
-  musl:
-    description: |
-      The musl library is used to build the rust agent.
-    url: "https://www.musl-libc.org/"
-    uscan-url: >-
-      https://www.musl-libc.org/releases/
-      musl-([\d\.]+)\.tar\.gz
-    version: "1.1.23"
-    meta:
-      description: |
-        'newest-version' is the latest version known to work.
-      newest-version: "1.1.23"
-
   nydus:
     description: "Nydus image acceleration service"
     url: "https://github.com/dragonflyoss/image-service"