build: add ARM64 architecture support to devcontainer

.devcontainer/post-create

@@ -18,10 +18,31 @@
 
 # Script to set up a development environment.
 
-make install
-make init
+arch="$(uname -m)"
 
 sudo apt-get update
-sudo apt-get install -y gfortran
+
+# On ARM64, pin gcc/g++/gfortran to version 12 to avoid a GCC 16 and binutils version mismatch:
+if [ "${arch}" = "aarch64" ]; then
+	sudo apt-get install -y gfortran-12
+	sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-12 100
+	sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-12 100
+	sudo update-alternatives --install /usr/bin/cc cc /usr/bin/gcc-12 100
+	sudo update-alternatives --install /usr/bin/gfortran gfortran /usr/bin/gfortran-12 100
+else
+	sudo apt-get install -y gfortran
+fi
+
+make install
+make init
 
 make install-deps-r
+
+# On ARM64, replace the wrong-architecture shellcheck binary with the correct one:
+if [ "${arch}" = "aarch64" ]; then
+	sc_version="$(shellcheck --version 2>/dev/null | grep '^version:' | awk '{print $2}')"
+	if [ -n "${sc_version}" ]; then
+		curl -sL "https://github.com/koalaman/shellcheck/releases/download/v${sc_version}/shellcheck-v${sc_version}.linux.aarch64.tar.xz" \
+			| sudo tar xJ --strip-components=1 -C /usr/local/bin "shellcheck-v${sc_version}/shellcheck"
+	fi
+fi

deps/checksums/shellcheck_v0_8_0_linux_aarch64_tar_xz/sha256

@@ -0,0 +1 @@
+9f47bbff5624babfa712eb9d64ece14c6c46327122d0c54983f627ae3a30a4ac

docs/contributing/FAQ.md

@@ -64,7 +64,7 @@ There are primarily two options for setting up your development environment to c
 1. [Manually setting up the development environment][manual-setup]
 2. [Setting up the dev container][devcontainer-setup]
 
-Note: The dev container does not yet support ARM64 architectures. For more information, or if you're interested in adding ARM64 support, you can visit this [issue][devcontainer-issue].
+Note: The dev container supports both x86-64 and ARM64 architectures (including Apple Silicon).
 
 <a name="install-cppcheck"></a>
 
@@ -403,8 +403,6 @@ For more `make` commands, refer to the [documentation][benchmark] on running ben
 
 [devcontainer-setup]: https://github.com/stdlib-js/stdlib/blob/87cbd67623892f90ddeea94e1d4e01eeada417b5/docs/devcontainer_setup.md
 
-[devcontainer-issue]: https://github.com/stdlib-js/stdlib/issues/4934
-
 [install-link]: https://github.com/stdlib-js/stdlib/tree/develop/tools/make/lib/install#install
 
 [ref-discussion]: https://github.com/stdlib-js/stdlib/pull/2298#discussion_r1624765205

docs/contributing/setting_up_a_devcontainer.md

@@ -28,9 +28,7 @@ We appreciate your interest in contributing to stdlib! Below, we've provided a s
 
 Dev containers are Docker containers that are specifically configured to provide a fully featured development environment with the right tooling, extensions, linting and formatting. They allow you to open any folder inside (or mounted into) a container and take advantage of Visual Studio Code's full feature set.
 
-The stdlib repository includes a preconfigured dev container, making it the easiest way to set up your development environment. It ensures proper linting, EditorConfig, and tooling are configured right from the start.
-
-**Note:** The dev container does not yet support ARM64 architectures. For more information, or if you're interested in adding ARM64 support, you can visit this [issue][devcontainer-issue].
+The stdlib repository includes a preconfigured dev container, making it the easiest way to set up your development environment. It ensures proper linting, EditorConfig, and tooling are configured right from the start. The dev container supports both x86-64 and ARM64 architectures (including Apple Silicon).
 
 ### Prerequisites
 
@@ -121,8 +119,6 @@ If you see this when you open the terminal, then the dev container installation
 
 [vscode]: https://code.visualstudio.com/
 
-[devcontainer-issue]: https://github.com/stdlib-js/stdlib/issues/4934
-
 [github-fork]: https://help.github.com/articles/fork-a-repo/
 
 </section>

tools/make/lib/install/shellcheck.mk

@@ -23,12 +23,16 @@ ifeq ($(OS), WINNT)
 	DEPS_SHELLCHECK_URL ?= https://github.com/koalaman/shellcheck/releases/download/v$(DEPS_SHELLCHECK_VERSION)/shellcheck-v$(DEPS_SHELLCHECK_VERSION).zip
 else
 ifeq ($(DEPS_SHELLCHECK_PLATFORM), darwin)
-	# TODO: handle arm64; currently, binaries for M1/M2 are not provided. See https://github.com/koalaman/shellcheck/issues/2714
+	# TODO: handle arm64; currently, darwin.aarch64 binaries are not provided for v0.8.0. See https://github.com/koalaman/shellcheck/issues/2714
 	DEPS_SHELLCHECK_URL ?= https://github.com/koalaman/shellcheck/releases/download/v$(DEPS_SHELLCHECK_VERSION)/shellcheck-v$(DEPS_SHELLCHECK_VERSION).darwin.x86_64.tar.xz
+else
+ifeq ($(DEPS_SHELLCHECK_ARCH), arm64)
+	DEPS_SHELLCHECK_URL ?= https://github.com/koalaman/shellcheck/releases/download/v$(DEPS_SHELLCHECK_VERSION)/shellcheck-v$(DEPS_SHELLCHECK_VERSION).linux.aarch64.tar.xz
 else
 	DEPS_SHELLCHECK_URL ?= https://github.com/koalaman/shellcheck/releases/download/v$(DEPS_SHELLCHECK_VERSION)/shellcheck-v$(DEPS_SHELLCHECK_VERSION).linux.x86_64.tar.xz
 endif
 endif
+endif
 
 # Determine the basename for the download:
 deps_shellcheck_basename := $(notdir $(DEPS_SHELLCHECK_URL))
@@ -48,7 +52,7 @@ ifeq ($(DEPS_SHELLCHECK_PLATFORM), win32)
 else
 ifeq ($(DEPS_SHELLCHECK_PLATFORM), darwin)
 ifeq ($(DEPS_SHELLCHECK_ARCH), arm64)
-	# FIXME: this is a temporary workaround until M1/M2 shellcheck binaries can be installed locally
+	# FIXME: darwin.aarch64 binaries are not available for v0.8.0; fall back to system shellcheck
 	SHELLCHECK ?= shellcheck
 else
 	SHELLCHECK ?= $(DEPS_SHELLCHECK_BUILD_OUT)/shellcheck