# Copyright (C) 2018 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

gettop() {
    # $BASH_SOURCE works if the shell is bash. $0 works when the shell was
    # invoked from a shell script but may fail when sourced in non-bash shell.
    SCRIPT=$(readlink -f ${BASH_SOURCE:-$0})
    TOPFILE="trusty/vendor/google/aosp/scripts/envsetup.sh"
    TOPDIR=$(dirname $SCRIPT)
    while [ \( ! -f "$TOPDIR/$TOPFILE" \) -a \( "$TOPDIR" != "/" \) ]; do
        TOPDIR=`dirname $TOPDIR`
    done
    if [ ! -f "$TOPDIR/$TOPFILE" ]; then
        echo "Error: Couldn't locate the top of the trusty tree. Try using bash?" 1>&2
        exit 1
    fi
    echo $TOPDIR
}

if [ -z ${TRUSTY_BUILD_CLANG_VERSION} ]; then
    # NOTE: clang-r584948 reports clang version 22.0.0 whereas Rust 1.90.0 was
    # built with LLVM version: 20.1.8 but the two releases are close in time and
    # thus expected to be compatible.
    TRUSTY_BUILD_CLANG_VERSION=clang-r584948b
fi
if [ -z ${TRUSTY_BUILD_RUST_VERSION} ]; then
    TRUSTY_BUILD_RUST_VERSION=1.93.1
fi
export TRUSTY_TOP=$(gettop)
# b/432074538: clang-r547379's linker often crashes while linking Hafnium
if [ "${TRUSTY_BUILD_CLANG_VERSION}" = "clang-r547379" ]; then
    HAFNIUM_BUILD_CLANG_VERSION=clang-r563880c
    export HAFNIUM_CLANG_BINDIR=${TRUSTY_TOP}/prebuilts/clang/host/linux-x86/${HAFNIUM_BUILD_CLANG_VERSION}/bin
fi
export CLANG_BINDIR=${TRUSTY_TOP}/prebuilts/clang/host/linux-x86/${TRUSTY_BUILD_CLANG_VERSION}/bin
export CLANG_HOST_LIBDIR=${CLANG_BINDIR}/../lib
export CLANG_GCC_TOOLCHAIN=${TRUSTY_TOP}/prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.17-4.8
export CLANG_HOST_SYSROOT=${CLANG_GCC_TOOLCHAIN}/sysroot
export CLANG_HOST_SEARCHDIR=${CLANG_GCC_TOOLCHAIN}/lib/gcc/x86_64-linux/4.8.3
export CLANG_HOST_LDDIRS="${CLANG_GCC_TOOLCHAIN}/lib/gcc/x86_64-linux/4.8.3 ${CLANG_GCC_TOOLCHAIN}/x86_64-linux/lib64"
export CLANG_TOOLS_BINDIR=${TRUSTY_TOP}/prebuilts/clang-tools/linux-x86/bin
export LINUX_CLANG_BINDIR=${TRUSTY_TOP}/prebuilts/clang/host/linux-x86/${TRUSTY_BUILD_CLANG_VERSION}/bin
export RUST_BINDIR=${TRUSTY_TOP}/prebuilts/rust-toolchain/linux-x86/${TRUSTY_BUILD_RUST_VERSION}/bin
export RUST_HOST_LIBDIR=${RUST_BINDIR}/../lib/rustlib/x86_64-unknown-linux-gnu/lib
export ARCH_arm_TOOLCHAIN_PREFIX=${CLANG_BINDIR}/llvm-
export ARCH_arm64_TOOLCHAIN_PREFIX=${CLANG_BINDIR}/llvm-
export ARCH_x86_64_TOOLCHAIN_PREFIX=${CLANG_BINDIR}/llvm-
export ARCH_x86_TOOLCHAIN_PREFIX=${CLANG_BINDIR}/llvm-
export BUILDTOOLS_BINDIR=${TRUSTY_TOP}/prebuilts/build-tools/linux-x86/bin
export BUILDTOOLS_COMMON=${TRUSTY_TOP}/prebuilts/build-tools/common
export PY3=$BUILDTOOLS_BINDIR/py3-cmd
export PATH_TOOLS_BINDIR=${TRUSTY_TOP}/prebuilts/build-tools/path/linux-x86
export LINUX_BUILD_TOOLS=${TRUSTY_TOP}/prebuilts/kernel-build-tools/linux-x86

SOONG_UI=$TRUSTY_TOP/build/soong/soong_ui.bash
if [ -f "$SOONG_UI" ]; then
    export SOONG_UI
fi

if [ -f "$TRUSTY_TOP/external/lk/engine.mk" ]; then
    export LKROOT=external/lk
elif [ -f "$TRUSTY_TOP/external/trusty/lk/engine.mk" ]; then
    export LKROOT=external/trusty/lk
else
    echo "Error: Couldn't locate the LK root directory." 1>&2
    exit 1
fi

# Additional Python libraries:
# Most Trusty Python scripts source this file to find the hermetic
# Python interpreter ($PY3).
# The hermetic Python interpreter only exposes the Python standard library.
# Set PYTHONPATH to make select, vendor'ed libraries available to hermetic
# Python scripts.
# WARNING: Python scripts that are copied to the build output directory should *not*
# import these packages.
PYTHONPATH=${TRUSTY_TOP}/prebuilts/libprotobuf/python
PYTHONPATH=${PYTHONPATH}:${TRUSTY_TOP}/external/python/six
PYTHONPATH=${PYTHONPATH}:${TRUSTY_TOP}/external/python/markupsafe/src
PYTHONPATH=${PYTHONPATH}:${TRUSTY_TOP}/external/python/jinja/src
export PYTHONPATH

# Bindgen uses clang and libclang at runtime, so we need to tell it where to
# look for these tools.
export BINDGEN_CLANG_PATH=${TRUSTY_TOP}/prebuilts/clang/host/linux-x86/${TRUSTY_BUILD_CLANG_VERSION}/bin/clang
export BINDGEN_LIBCLANG_PATH=${TRUSTY_TOP}/prebuilts/clang/host/linux-x86/${TRUSTY_BUILD_CLANG_VERSION}/lib