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159 lines
4.8 KiB
159 lines
4.8 KiB
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# Copyright 2018 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Create llvm ebuild file.
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This script takes an existing host llvm compiler ebuild and
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creates another build that should be installable in a prefixed location.
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The script patches a few lines in the llvm ebuild to make that happen.
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Since the script is based on the current llvm ebuild patterns,
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it may need to be updated if those patterns change.
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This script should normally be invoked by the shell script
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create_llvm_extra.sh .
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Below is an example of the expected diff of the newly generated ebuild with
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some explanation of the diffs.
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diff -Nuar llvm-pre7.0_pre335547_p20180529.ebuild newly-created-file.ebuild
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--- llvm-7.0_pre331547_p20180529-r8.ebuild
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+++ newly-created-file.ebuild
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@@ -60,9 +60,9 @@ EGIT_REPO_URIS=(
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fi
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LICENSE="UoI-NCSA"
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-SLOT="0/${PV%%_*}"
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+SLOT="${PV%%_p[[:digit:]]*}" # Creates a unique slot so that multiple copies
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of the new build can be installed.
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KEYWORDS="-* amd64"
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# Change USE flags to match llvm ebuild installtion. To see the set of flags
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enabled in llvm compiler ebuild, run $ sudo emerge -pv llvm
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-IUSE="debug +default-compiler-rt +default-libcxx doc libedit +libffi"
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+IUSE="debug +default-compiler-rt +default-libcxx doc libedit +libffi
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ncurses ocaml python llvm-next llvm-tot test xml video_cards_radeon"
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COMMON_DEPEND="
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@@ -145,6 +145,7 @@ pkg_pretend() {
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}
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pkg_setup() {
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# This Change is to install the files in $PREFIX.
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+ export PREFIX="/usr/${PN}/${SLOT}"
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pkg_pretend
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}
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@@ -272,13 +273,13 @@
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sed -e "/RUN/s/-warn-error A//" -i test/Bindings/OCaml/*ml || die
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# Allow custom cmake build types (like 'Gentoo')
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# Convert use of PN to llvm in epatch commands.
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- epatch "${FILESDIR}"/cmake/${PN}-3.8-allow_custom_cmake_build.patch
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+ epatch "${FILESDIR}"/cmake/llvm-3.8-allow_custom_cmake_build.patch
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# crbug/591436
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epatch "${FILESDIR}"/clang-executable-detection.patch
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# crbug/606391
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- epatch "${FILESDIR}"/${PN}-3.8-invocation.patch
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+ epatch "${FILESDIR}"/llvm-3.8-invocation.patch
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@@ -411,11 +412,14 @@ src_install() {
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/usr/include/llvm/Config/llvm-config.h
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)
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+ MULTILIB_CHOST_TOOLS=() # No need to install any multilib tools/headers.
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+ MULTILIB_WRAPPED_HEADERS=()
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multilib-minimal_src_install
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}
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multilib_src_install() {
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cmake-utils_src_install
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+ return # No need to install any wrappers.
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local wrapper_script=clang_host_wrapper
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cat "${FILESDIR}/clang_host_wrapper.header" \
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@@ -434,6 +438,7 @@ multilib_src_install() {
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}
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multilib_src_install_all() {
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+ return # No need to install common multilib files.
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insinto /usr/share/vim/vimfiles
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doins -r utils/vim/*/.
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# some users may find it useful
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"""
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from __future__ import print_function
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import os
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import sys
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def process_line(line, text):
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# Process the line and append to the text we want to generate.
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# Check if line has any patterns that we want to handle.
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newline = line.strip()
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if newline.startswith('#'):
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# Do not process comment lines.
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text.append(line)
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elif line.startswith('SLOT='):
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# Change SLOT to "${PV%%_p[[:digit:]]*}"
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SLOT_STRING = 'SLOT="${PV%%_p[[:digit:]]*}"\n'
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text.append(SLOT_STRING)
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elif line.startswith('IUSE') and 'multitarget' in line:
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# Enable multitarget USE flag.
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newline = line.replace('multitarget', '+multitarget')
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text.append(newline)
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elif line.startswith('pkg_setup()'):
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# Setup PREFIX.
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text.append(line)
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text.append('\texport PREFIX="/usr/${PN}/${SLOT}"\n')
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elif line.startswith('multilib_src_install_all()'):
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text.append(line)
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# Do not install any common files.
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text.append('\treturn\n')
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elif 'epatch ' in line:
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# Convert any $PN or ${PN} in epatch files to llvm.
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newline = line.replace('$PN', 'llvm')
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newline = newline.replace('${PN}', 'llvm')
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text.append(newline)
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elif 'multilib-minimal_src_install' in line:
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# Disable MULTILIB_CHOST_TOOLS and MULTILIB_WRAPPED_HEADERS
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text.append('\tMULTILIB_CHOST_TOOLS=()\n')
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text.append('\tMULTILIB_WRAPPED_HEADERS=()\n')
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text.append(line)
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elif 'cmake-utils_src_install' in line:
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text.append(line)
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# Do not install any wrappers.
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text.append('\treturn\n')
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else:
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text.append(line)
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def main():
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if len(sys.argv) != 3:
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filename = os.path.basename(__file__)
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print('Usage: ', filename, ' <input.ebuild> <output.ebuild>')
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return 1
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text = []
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with open(sys.argv[1], 'r') as infile:
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for line in infile:
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process_line(line, text)
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with open(sys.argv[2], 'w') as outfile:
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outfile.write(''.join(text))
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return 0
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if __name__ == '__main__':
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sys.exit(main())
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