tools/install-riscv64-deps

#!/usr/bin/env bash
# Copyright 2023 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
set -ex

sudo apt-get install --yes --no-install-recommends \
    binutils-riscv64-linux-gnu \
    g++-riscv64-linux-gnu \
    libc6-dev-riscv64-cross

# Add riscv64gc target to Rust
rustup target add riscv64gc-unknown-linux-gnu

# Clone, patch, build and install libcap for riscv
# TODO(dgreid) - remove this when the standard libcap:riscv64 package is
# functional from the dev_container debian version. At time of writing there is
# a disfunctional libc:riscv64 dependency that breaks the host libc in debian:buster.
LIBCAP_DIR=$(mktemp -d)
pushd "$LIBCAP_DIR" || exit 1

# Define a function to clean up the temporary directory
cleanup() {
  rm -rf "$LIBCAP_DIR"
}

# Register the cleanup function to be called on script exit
trap cleanup EXIT

git clone --depth 1 --branch v1.2.53 https://git.kernel.org/pub/scm/libs/libcap/libcap.git
cd libcap
# Patch cross compile issue with libcap using target CC to build host tools.
cat <<EOF >> libcap.patch
diff --git a/Make.Rules b/Make.Rules
index 125f2aa..a78c656 100644
--- a/Make.Rules
+++ b/Make.Rules
@@ -58,7 +58,7 @@ CC := \$(CROSS_COMPILE)gcc
 DEFINES := -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
 COPTS ?= -O2
 CFLAGS ?= \$(COPTS) \$(DEFINES)
-BUILD_CC ?= \$(CC)
+BUILD_CC ?= gcc
 BUILD_COPTS ?= -O2
 BUILD_CFLAGS ?= \$(BUILD_COPTS) \$(DEFINES) \$(IPATH)
 AR := \$(CROSS_COMPILE)ar
EOF
patch -p1 < libcap.patch

make ARCH=riscv64 CROSS_COMPILE=riscv64-linux-gnu- GOLANG=no

sudo cp libcap/libcap.so* libcap/libpsx.so* /usr/riscv64-linux-gnu/lib/
sudo mkdir -p /usr/lib/riscv64-linux-gnu/pkgconfig
sudo cp libcap/*.pc /usr/lib/riscv64-linux-gnu/pkgconfig/
sudo mkdir -p /usr/riscv64-linux-gnu/usr/include/sys/
sudo cp ./libcap/include/sys/capability.h /usr/riscv64-linux-gnu/usr/include/sys/

sudo ln -f /usr/bin/pkg-config /usr/bin/riscv64-linux-gnu-pkg-config

popd || exit 1