1 #!/usr/bin/env python2 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 from __future__ import print_function 8 9 import os 10 import sys 11 12 # This script takes an existing host llvm compiler ebuild and 13 # creates another build that should be installable in a prefixed location. 14 # The script patches a few lines in the llvm ebuild to make that happen. 15 # 16 # Since the script is based on the current llvm ebuild patterns, 17 # it may need to be updated if those patterns change. 18 # 19 # This script should normally be invoked by the shell script 20 # create_llvm_extra.sh . 21 22 """ 23 Below is an example of the expected diff of the newly generated ebuild with 24 some explanation of the diffs. 25 26 diff -Nuar llvm-pre7.0_pre335547_p20180529.ebuild newly-created-file.ebuild 27 --- llvm-7.0_pre331547_p20180529-r8.ebuild 28 +++ newly-created-file.ebuild 29 30 @@ -60,9 +60,9 @@ EGIT_REPO_URIS=( 31 fi 32 33 LICENSE="UoI-NCSA" 34 -SLOT="0/${PV%%_*}" 35 +SLOT="${PV%%_p[[:digit:]]*}" # Creates a unique slot so that multiple copies 36 of the new build can be installed. 37 38 KEYWORDS="-* amd64" 39 40 # Change USE flags to match llvm ebuild installtion. To see the set of flags 41 enabled in llvm compiler ebuild, run $ sudo emerge -pv llvm 42 43 -IUSE="debug +default-compiler-rt +default-libcxx doc libedit +libffi multitarget 44 +IUSE="debug +default-compiler-rt +default-libcxx doc libedit +libffi +multitarget 45 ncurses ocaml python llvm-next llvm-tot test xml video_cards_radeon" 46 47 COMMON_DEPEND=" 48 @@ -145,6 +145,7 @@ pkg_pretend() { 49 } 50 51 pkg_setup() { 52 # This Change is to install the files in $PREFIX. 53 + export PREFIX="/usr/${PN}/${SLOT}" 54 pkg_pretend 55 } 56 57 @@ -272,13 +273,13 @@ 58 sed -e "/RUN/s/-warn-error A//" -i test/Bindings/OCaml/*ml || die 59 60 # Allow custom cmake build types (like 'Gentoo') 61 # Convert use of PN to llvm in epatch commands. 62 - epatch "${FILESDIR}"/cmake/${PN}-3.8-allow_custom_cmake_build_types.patch 63 + epatch "${FILESDIR}"/cmake/llvm-3.8-allow_custom_cmake_build_types.patch 64 65 # crbug/591436 66 epatch "${FILESDIR}"/clang-executable-detection.patch 67 68 # crbug/606391 69 - epatch "${FILESDIR}"/${PN}-3.8-invocation.patch 70 + epatch "${FILESDIR}"/llvm-3.8-invocation.patch 71 72 @@ -411,11 +412,14 @@ src_install() { 73 /usr/include/llvm/Config/llvm-config.h 74 ) 75 76 + MULTILIB_CHOST_TOOLS=() # No need to install any multilib tools/headers. 77 + MULTILIB_WRAPPED_HEADERS=() 78 multilib-minimal_src_install 79 } 80 81 multilib_src_install() { 82 cmake-utils_src_install 83 + return # No need to install any wrappers. 84 85 local wrapper_script=clang_host_wrapper 86 cat "${FILESDIR}/clang_host_wrapper.header" \ 87 @@ -434,6 +438,7 @@ multilib_src_install() { 88 } 89 90 multilib_src_install_all() { 91 + return # No need to install common multilib files. 92 insinto /usr/share/vim/vimfiles 93 doins -r utils/vim/*/. 94 # some users may find it useful 95 """ 96 97 def process_line(line, text): 98 # Process the line and append to the text we want to generate. 99 # Check if line has any patterns that we want to handle. 100 newline = line.strip() 101 if newline.startswith('#'): 102 # Do not process comment lines. 103 text.append(line) 104 elif line.startswith('SLOT='): 105 # Change SLOT to "${PV%%_p[[:digit:]]*}" 106 SLOT_STRING='SLOT="${PV%%_p[[:digit:]]*}"\n' 107 text.append(SLOT_STRING) 108 elif line.startswith('IUSE') and 'multitarget' in line: 109 # Enable multitarget USE flag. 110 newline = line.replace('multitarget', '+multitarget') 111 text.append(newline) 112 elif line.startswith('pkg_setup()'): 113 # Setup PREFIX. 114 text.append(line) 115 text.append('\texport PREFIX="/usr/${PN}/${SLOT}"\n') 116 elif line.startswith('multilib_src_install_all()'): 117 text.append(line) 118 # Do not install any common files. 119 text.append('\treturn\n') 120 elif 'epatch ' in line: 121 # Convert any $PN or ${PN} in epatch files to llvm. 122 newline = line.replace('$PN', 'llvm') 123 newline = newline.replace('${PN}', 'llvm') 124 text.append(newline) 125 elif 'multilib-minimal_src_install' in line: 126 # Disable MULTILIB_CHOST_TOOLS and MULTILIB_WRAPPED_HEADERS 127 text.append('\tMULTILIB_CHOST_TOOLS=()\n') 128 text.append('\tMULTILIB_WRAPPED_HEADERS=()\n') 129 text.append(line) 130 elif 'cmake-utils_src_install' in line: 131 text.append(line) 132 # Do not install any wrappers. 133 text.append('\treturn\n') 134 else: 135 text.append(line) 136 137 138 def main(): 139 if len(sys.argv) != 3: 140 filename = os.path.basename(__file__) 141 print ('Usage: ', filename,' <input.ebuild> <output.ebuild>') 142 return 1 143 144 text = [] 145 with open(sys.argv[1], 'r') as infile: 146 for line in infile: 147 process_line(line, text) 148 149 with open(sys.argv[2], 'w') as outfile: 150 outfile.write("".join(text)) 151 152 return 0 153 154 155 if __name__== "__main__": 156 sys.exit(main()) 157
