79 lines
1.9 KiB
Bash
Executable File
79 lines
1.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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# Build BusyBox with ARM toolchain from env.sh and optional sysroot.
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#
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# Usage:
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# ./build.sh [SYSROOT]
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#
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# Examples:
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# ./build.sh
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# ./build.sh /home/stargazer/arm-uclinuxfdpiceabi/sysroot
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TOOLCHAIN_PREFIX="${TOOLCHAIN_PREFIX:-arm-uclinuxfdpiceabi}"
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CC_BIN="${CC_BIN:-${TOOLCHAIN_PREFIX}-gcc}"
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STRIP_BIN="${STRIP_BIN:-${TOOLCHAIN_PREFIX}-strip}"
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JOBS="${JOBS:-$(nproc)}"
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INSTALL_DIR_NAME="${INSTALL_DIR_NAME:-_install}"
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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BUSYBOX_DIR="${SCRIPT_DIR}/busybox"
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SYSROOT_DEFAULT="/home/stargazer/arm-uclinuxfdpiceabi/sysroot"
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SYSROOT="${1:-${SYSROOT:-$SYSROOT_DEFAULT}}"
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ENV_FILE="${ENV_FILE:-${SCRIPT_DIR}/env.sh}"
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die() {
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echo "ERROR: $*" >&2
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exit 1
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}
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if [ -f "${ENV_FILE}" ]; then
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# shellcheck disable=SC1090
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. "${ENV_FILE}"
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fi
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if ! command -v "${CC_BIN}" >/dev/null 2>&1; then
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die "Compiler not found in PATH: ${CC_BIN}"
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fi
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if ! command -v "${STRIP_BIN}" >/dev/null 2>&1; then
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die "Strip tool not found in PATH: ${STRIP_BIN}"
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fi
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if [ ! -d "${BUSYBOX_DIR}" ]; then
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die "busybox directory not found: ${BUSYBOX_DIR}"
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fi
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if [ ! -d "${SYSROOT}" ]; then
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die "SYSROOT not found: ${SYSROOT}"
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fi
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INSTALL_DIR="${SCRIPT_DIR}/${INSTALL_DIR_NAME}"
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if [ "${INSTALL_DIR}" = "/" ]; then
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die "Refusing to install into /"
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fi
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echo "Compiler: ${CC_BIN}"
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echo "Strip: ${STRIP_BIN}"
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echo "SYSROOT: ${SYSROOT}"
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echo "Source dir: ${BUSYBOX_DIR}"
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echo "Install dir: ${INSTALL_DIR}"
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cd "${BUSYBOX_DIR}"
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if [ ! -f ".config" ]; then
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make defconfig
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fi
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make oldconfig
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make -j"${JOBS}" \
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CROSS_COMPILE="${TOOLCHAIN_PREFIX}-" \
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CC="${CC_BIN}" \
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STRIP="${STRIP_BIN}" \
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EXTRA_CFLAGS="--sysroot=${SYSROOT}" \
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EXTRA_LDFLAGS="--sysroot=${SYSROOT}"
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make CONFIG_PREFIX="${INSTALL_DIR}" install
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"${STRIP_BIN}" busybox
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echo "Build completed successfully."
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echo "Binary: ${BUSYBOX_DIR}/busybox"
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echo "Installed to: ${INSTALL_DIR}"
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