1 #!/bin/bash 2 3 # Copyright 2018 The Chromium OS Authors. All rights reserved. 4 # Use of this source code is governed by a BSD-style license that can be 5 # found in the LICENSE file. 6 7 # This script takes an existing llvm ebuild file and generate a llvm-extra 8 # ebuild. The newly generated llvm-extra ebuild can be installed as a regular 9 # host package. 10 # The new ebuild should be generated in sys-devel/llvm-extra directory. 11 # The script also copies all the files from files/ directory. 12 # The generated llvm-extra ebuild is slotted so multiple instances of 13 # llvm-extra ebuilds can be installed at same time. 14 # The slot is derived based on the _pre<num> string in the llvm ebuild name. 15 # e.g. For llvm-7.0_pre331547_p20180529-r8.ebuild, the slot will be 16 # 7.0_pre331547. 17 # 18 # Usage: 19 # ./create_llvm_extra.sh /path/to/llvm-7.0_pre331547_p20180529-r8.ebuild 20 # 21 # To use the clang installed by llvm-extra, modify the CFLAGS and 22 # LDFLAGS of a pckage to pass the patch of the clang binary installed by 23 # the llvm-extra package. 24 # e.g. append-flags -Xclang-path=/usr/llvm-extra/version/clang 25 # append-ldflags -Xclang-path=/usr/llvm-extra/version/clang 26 # 27 28 SCRIPT_DIR=$(realpath $(dirname "$0")) 29 30 function check_cmd() { 31 if [[ "$#" -ne 1 ]]; then 32 echo "Exactly 1 argument expected" 33 echo "Usage $0 <path_to_llvm_ebuild>" 34 exit 1 35 fi 36 if [[ ! -f "$1" ]]; then 37 echo "$1 is not a file" 38 exit 1; 39 fi 40 } 41 42 function create_llvm_extra_ebuild() { 43 EBUILD_PREFIX=llvm-extra 44 EBUILD_DIR=$(dirname "$1") 45 EBUILD_FILE_NAME=$(basename "$1") 46 NEW_EBUILD_FILE_NAME="${EBUILD_FILE_NAME/llvm/$EBUILD_PREFIX}" 47 NEW_EBUILD_FILENAME_NO_EXT="${NEW_EBUILD_FILE_NAME%.*}" 48 NEW_EBUILD_DIR="${EBUILD_DIR}/../${EBUILD_PREFIX}" 49 NEW_EBUILD_PV="${NEW_EBUILD_FILENAME_NO_EXT#"$EBUILD_PREFIX-"}" 50 NEW_EBUILD_SLOT="${NEW_EBUILD_PV%%_p[[:digit:]]*}" 51 52 mkdir -p "${NEW_EBUILD_DIR}" 53 if [[ -d "${EBUILD_DIR}/files" ]]; then 54 cp -rf "${EBUILD_DIR}/files" "${NEW_EBUILD_DIR}" 55 fi 56 57 if [[ -f "${NEW_EBUILD_DIR}/${NEW_EBUILD_FILE_NAME}" ]]; then 58 echo "Removing existing ebuild file ${NEW_EBUILD_FILE_NAME}" 59 rm -f "${NEW_EBUILD_DIR}/${NEW_EBUILD_FILE_NAME}" 60 fi 61 # Generate the llvm-extra ebuild file. 62 "${SCRIPT_DIR}"/create_ebuild_file.py "$1" "${NEW_EBUILD_DIR}/${NEW_EBUILD_FILE_NAME}" 63 if [[ $? -ne 0 ]]; then 64 echo "Creation of ${NEW_EBUILD_DIR}/${NEW_EBUILD_FILE_NAME} failed" 65 exit 1 66 fi 67 echo "***" 68 echo "***" 69 echo "${NEW_EBUILD_DIR}/${NEW_EBUILD_FILE_NAME} has been created." 70 71 echo "***" 72 echo "Test if it builds by running \$ sudo emerge ${EBUILD_PREFIX}:${NEW_EBUILD_SLOT}" 73 echo "***" 74 echo "If it works, Go ahead and submit the newly generated ebuild"\ 75 "and any other files in ${NEW_EBUILD_DIR}." 76 echo "***" 77 echo "Don't forget to add sys-devel/${EBUILD_PREFIX}:${NEW_EBUILD_SLOT} to"\ 78 "the dependencies in virtual/target-chromium-os-sdk ebuild." 79 echo "***" 80 echo "***" 81 } 82 83 84 set -e 85 # Sanity checks. 86 check_cmd "${@}" 87 # Create llvm-extra ebuild. 88 create_llvm_extra_ebuild "${@}" 89
