Support aarch64 on linux

Makefile

@@ -23,6 +23,8 @@ release-alpine:
 # Creates a release build in a containerized build environment of the shared library for glibc Linux (.so)
 release-linux:
 	rm -rf libgo_owasm/target/release
+	rm -rf libgo_owasm/target/x86_64-unknown-linux-gnu/release
+	rm -rf libgo_owasm/target/aarch64-unknown-linux-gnu/release
 	docker run --rm -u $(USER_ID):$(USER_GROUP) -v $(shell pwd):/code/go-owasm owasm/go-ext-builder:$(DOCKER_TAG)-linux
 
 # Creates a release build in a containerized build environment of the shared library for macOS (.dylib)

api/link_glibclinux_aarch64.go

@@ -0,0 +1,6 @@
+//go:build linux && !muslc && arm64
+
+package api
+
+// #cgo LDFLAGS: -Wl,-rpath,${SRCDIR} -L${SRCDIR} -lgo_owasm.aarch64 -lgmp
+import "C"

api/link_glibclinux_x86_64.go

@@ -0,0 +1,6 @@
+//go:build linux && !muslc && amd64
+
+package api
+
+// #cgo LDFLAGS: -Wl,-rpath,${SRCDIR} -L${SRCDIR} -lgo_owasm.x86_64 -lgmp
+import "C"

build/Dockerfile.linux

@@ -1,7 +1,23 @@
 FROM centos:centos7
 
-RUN yum -y update
-RUN yum -y install clang gcc gcc-c++ make wget gmp-devel
+RUN yum -y update \
+    && yum -y install clang gcc gmake wget gmp-devel zlib-devel \
+    # Obtain dependencies for cross compiling
+    # The only prebuilt glibc was done by third party Computational
+    && yum -y install epel-release \
+    # See https://centos.pkgs.org/7/epel-aarch64/gcc-aarch64-linux-gnu-4.8.5-16.el7.1.aarch64.rpm.html
+    # and https://centos.pkgs.org/7/epel-aarch64/gcc-c++-aarch64-linux-gnu-4.8.5-16.el7.1.aarch64.rpm.html:
+    # "Support for cross-building user space programs is not currently provided as that would massively multiply
+    # the number of packages."
+    && yum -y install gcc-aarch64-linux-gnu gcc-c++-aarch64-linux-gnu \
+    # See https://stackoverflow.com/a/64920961
+    && wget http://springdale.princeton.edu/data/springdale/7/x86_64/os/Computational/glibc-aarch64-linux-gnu-2.24-2.sdl7.2.noarch.rpm \
+    && sha256sum glibc-aarch64-linux-gnu-2.24-2.sdl7.2.noarch.rpm | grep 8caf8654ba0c15e1792bf0aaa1ac0cd4ad94ac905e97d6ea0f0e56e9ca1f5e78 \
+    && wget http://springdale.princeton.edu/data/springdale/7/x86_64/os/Computational/glibc-aarch64-linux-gnu-devel-2.24-2.sdl7.2.noarch.rpm \
+    && sha256sum glibc-aarch64-linux-gnu-devel-2.24-2.sdl7.2.noarch.rpm | grep bf050dc2389630f50e90f4cdaf6e4e1d986e89dcd2c8432f72738abe38b3bce2 \
+    && yum install -y glibc-aarch64-linux-gnu-2.24-2.sdl7.2.noarch.rpm \
+    && yum install -y glibc-aarch64-linux-gnu-devel-2.24-2.sdl7.2.noarch.rpm \
+    && rm glibc-aarch64-*.rpm
 
 # reference from https://github.com/rust-lang/docker-rust-nightly
 ENV RUSTUP_HOME=/usr/local/rustup \
@@ -11,12 +27,13 @@ ENV RUSTUP_HOME=/usr/local/rustup \
 RUN url="https://static.rust-lang.org/rustup/dist/x86_64-unknown-linux-gnu/rustup-init"; \
     wget "$url"; \
     chmod +x rustup-init; \
-    ./rustup-init -y --no-modify-path --default-toolchain 1.60.0; \
+    ./rustup-init -y --no-modify-path --default-toolchain 1.69.0; \
     rm rustup-init; \
     chmod -R a+w $RUSTUP_HOME $CARGO_HOME; \
     rustup --version; \
     cargo --version; \
-    rustc --version;
+    rustc --version; \
+    rustup target add aarch64-unknown-linux-gnu
 
 # pre-fetch many deps
 WORKDIR /scratch
@@ -31,12 +48,24 @@ WORKDIR /code
 RUN rm -rf /scratch
 
 # copy build scripts
-COPY go-owasm/build/build_linux.sh /opt
-RUN chmod +x /opt/build*
+COPY go-owasm/build/*.sh /opt/
+RUN chmod +x /opt/*.sh
 
 # add config cargo
 RUN mkdir /.cargo
 RUN chmod +rx /.cargo
 COPY go-owasm/build/cargo-config /.cargo/config
 
+# Download and install gmp-devel for AArch64
+RUN wget http://mirror.centos.org/altarch/7/os/aarch64/Packages/gmp-devel-6.0.0-15.el7.aarch64.rpm \
+    && rpm2cpio gmp-devel-6.0.0-15.el7.aarch64.rpm | cpio -idmv \
+    && rm gmp-devel-6.0.0-15.el7.aarch64.rpm
+
+# Copy the missing library libgcc_s.so that gcc does not provide
+RUN wget http://mirror.centos.org/altarch/7/os/aarch64/Packages/libgcc-4.8.5-44.el7.aarch64.rpm \
+    && sha256sum libgcc-4.8.5-44.el7.aarch64.rpm | grep 4f44c5be70ed9d8d74c2a616cde92a842b15eefaccd766959e5fbd7fbe965d2d \
+    && rpm2cpio libgcc-4.8.5-44.el7.aarch64.rpm | cpio -idmv \
+    && cp /code/lib64/libgcc_s-4.8.5-20150702.so.1 /usr/lib/gcc/aarch64-linux-gnu/4.8.5/libgcc_s.so \
+    && rm libgcc-*.el7.aarch64.rpm
+
 CMD ["/opt/build_linux.sh"]

build/build_gnu_aarch64.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+set -o errexit -o nounset -o pipefail
+
+export CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse
+
+# See https://github.com/CosmWasm/wasmvm/issues/222#issuecomment-880616953 for two approaches to
+# enable stripping through cargo (if that is desired).
+
+echo "Starting aarch64-unknown-linux-gnu build"
+export CC=clang
+export CXX=clang++
+export qemu_aarch64="qemu-aarch64 -L /usr/aarch64-linux-gnu"
+export CC_aarch64_unknown_linux_gnu=clang
+export AR_aarch64_unknown_linux_gnu=llvm-ar
+export CFLAGS_aarch64_unknown_linux_gnu="--sysroot=/usr/aarch64-linux-gnu"
+export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER=aarch64-linux-gnu-gcc
+export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_RUNNER="$qemu_aarch64"
+cargo build --release --target aarch64-unknown-linux-gnu
+cp target/aarch64-unknown-linux-gnu/release/libgo_owasm.so  ./../api/libgo_owasm.aarch64.so

build/build_gnu_x86_64.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+set -o errexit -o nounset -o pipefail
+
+export CARGO_REGISTRIES_CRATES_IO_PROTOCOL=sparse
+
+# See https://github.com/CosmWasm/wasmvm/issues/222#issuecomment-880616953 for two approaches to
+# enable stripping through cargo (if that is desired).
+
+echo "Starting x86_64-unknown-linux-gnu build"
+export CC=clang
+export CXX=clang++
+cargo build --release --target x86_64-unknown-linux-gnu
+cp target/x86_64-unknown-linux-gnu/release/libgo_owasm.so ./../api/libgo_owasm.x86_64.so

build/build_linux.sh

@@ -1,5 +1,11 @@
 #!/bin/bash
+set -o errexit -o nounset -o pipefail
 
 cd go-owasm/libgo_owasm
-cargo build --release
-cp target/release/deps/libgo_owasm.so ./../api
+/opt/build_gnu_x86_64.sh
+/opt/build_gnu_aarch64.sh
+
+
+# cd go-owasm/libgo_owasm 
+# cargo build --release
+# cp target/release/deps/libgo_owasm.so ./../api