Files
tubestation/taskcluster/scripts/misc/build-clang-7-linux-macosx-cross.sh
Mike Hommey 970cee7912 Bug 1492663 - Upgrade most CI builds to clang 7 r=froydnj
The cctools-port linker links against libraries from clang (for LTO),
which have different SONAMEs depending on the clang version. Which means
the linker needs to be used along the same version of clang it was built
against. Thus we also make it depend on linux64-clang-7.

But changing the dependency is not enough, cf. bug 1471905, so also
touch its build script, which it turns out, we need to do anyways
because llvm-dsymutil was renamed to dsymutil.

Relatedly, all toolchains that are built using cctools-port need to use
linux64-clang-7 too.

Building compiler-rt 7 with the OSX 10.11 SDK fails because of some
newer APIs being used in compiler-rt for xray, but this is not a feature
we use, so disable that.

Differential Revision: https://phabricator.services.mozilla.com/D6766
2018-09-27 15:33:42 +00:00

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#!/bin/bash
set -x -e -v
# This script is for building clang for Mac OS X targets on a Linux host,
# including native Mac OS X Compiler-RT libraries and llvm-symbolizer.
WORKSPACE=$HOME/workspace
HOME_DIR=$WORKSPACE/build
UPLOAD_DIR=$HOME/artifacts
cd $HOME_DIR/src
. taskcluster/scripts/misc/tooltool-download.sh
# ld needs libLTO.so from llvm
export LD_LIBRARY_PATH=$HOME_DIR/src/clang/lib
# these variables are used in build-clang.py
export CROSS_CCTOOLS_PATH=$HOME_DIR/src/cctools
export CROSS_SYSROOT=$HOME_DIR/src/MacOSX10.11.sdk
# cmake doesn't allow us to specify a path to lipo on the command line.
export PATH=$PATH:$CROSS_CCTOOLS_PATH/bin
ln -sf $CROSS_CCTOOLS_PATH/bin/x86_64-apple-darwin11-lipo $CROSS_CCTOOLS_PATH/bin/lipo
# gets a bit too verbose here
set +x
cd build/build-clang
# |mach python| sets up a virtualenv for us!
../../mach python ./build-clang.py -c clang-7-macosx64.json --skip-tar
# We now have a native macosx64 toolchain.
# What we want is a native linux64 toolchain which can target macosx64 and use the sanitizer dylibs.
# Overlay the linux64 toolchain that we used for this build (except llvm-symbolizer).
(
cd "$WORKSPACE/moz-toolchain/build/stage1"
# Need the macosx64 native llvm-symbolizer since this gets shipped with sanitizer builds
mv clang/bin/llvm-symbolizer $HOME_DIR/src/clang/bin/
cp --remove-destination -lr $HOME_DIR/src/clang/* clang/
tar -c -J -f $HOME_DIR/src/build/build-clang/clang.tar.xz clang
)
set -x
# Put a tarball in the artifacts dir
mkdir -p $UPLOAD_DIR
cp clang.tar.* $UPLOAD_DIR