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Merge #19240: build: macOS toolchain simplification and bump

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adf543d714 darwin: pass mlinker-version so that clang enables new features (Cory Fields)
2418f739f7 macos: Bump to xcode 11.3.1 and 10.15 SDK (Cory Fields)
5c2c835433 depends: bump MacOS toolchain (Cory Fields)
85b5e42088 contrib: macdeploy: Remove historical extraction notes (Carl Dong)
351beb5c9a contrib: macdeploy: Use apple-sdk-tools instead of xar+pbzx (Carl Dong)
fbcfcf6954 native_cctools: Don't use libc++ from pinned clang (Carl Dong)
3381e4a189 Adapt rest of tooling to new SDK naming scheme (Carl Dong)
b3394ab235 contrib: macdeploy: Correctly generate macOS SDK (Carl Dong)

Pull request description:

  This PR achieves 3 main things:
  1. It simplifies the macOS SDK generation by putting the logic inside a (semi-)portable python3 script `gen-sdk`
  2. It transitions us to using `libc++` headers extracted from the `Xcode.app`, which is more correct as those headers better match the `.tbd` library stubs we use from the `MacOSX.sdk` (located under the same `Xcode.app`). Previously, we used `libc++` headers copied from our downloaded, pinned clang (see `native_cctools.mk`).
  3. It bumps the macOS toolchain in a way that fulfills all of the following constraints:
      1. The new SDK should support compiling with C++17 (our current one doesn't)
      2. The new toolchain should not change our minimum supported macOS version (`-mmacosx-version-min`)
      3. The new toolchain should expect to use a version of `cctools` that is supported by https://github.com/tpoechtrager/cctools-port

  For the constraints in (3), you can reference [this chart](https://en.wikipedia.org/wiki/Xcode#Xcode_7.0_-_11.x_(since_Free_On-Device_Development)) to see that the newest toolchain we can use with our `cctools-port` is `11.3.1`, and the rest of the constraints were tested with local builds.

  #### But [the other Wikipedia chart](https://en.wikipedia.org/wiki/Xcode#Xcode_11.x_(since_SwiftUI_framework)) says that the "min macOS to run" for Xcode 11.3.1 is 10.14.4, doesn't that violate constraint (ii)?

  This confused me at first too, but the "min macOS to run" is for the Xcode.app App itself. The SDK still supports 10.12, as evident in a few plist files and as proven through local builds.

  #### Why bundle all of this together in a single PR?

  We need (1) and (2) together, because if we don't, manually adding the `libc++` headers and writing that out in a `README.md` is going to result in a lot of user error, so it's great to have these together to be more correct and also make it easier on the user at the same time.

  We need (3) together with everything else because bumping (or in the case of (1), renaming) the SDK requires some human coordination and may break some builds. And since it's not that complicated a change, it makes sense to do it together with the rest.

ACKs for top commit:
  theuni:
    ACK adf543d714.
  fanquake:
    ACK adf543d714 - I'll take a look at the linker issue.

Tree-SHA512: 3813b69ebfe9610bee14100f26296fb5438d9bf0dd184ea55e6c38f5ebd94f7c171d98b150fc9e52fde626533f347f7ec51a2b72b79859d946284f578c1084a3
This commit is contained in:
fanquake 2020-06-23 15:49:00 +08:00
commit 80fd474e40
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GPG key ID: 2EEB9F5CC09526C1
8 changed files with 146 additions and 57 deletions
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3
ci/test/00_setup_env_mac.sh
View file

@ -9,7 +9,8 @@ export LC_ALL=C.UTF-8
export CONTAINER_NAME=ci_macos_cross
export HOST=x86_64-apple-darwin16
export PACKAGES="cmake imagemagick libcap-dev librsvg2-bin libz-dev libbz2-dev libtiff-tools python3-dev python3-setuptools"
export OSX_SDK=10.14
export XCODE_VERSION=11.3.1
export XCODE_BUILD_ID=11C505
export RUN_UNIT_TESTS=false
export RUN_FUNCTIONAL_TESTS=false
export GOAL="deploy"

11
ci/test/05_before_script.sh
View file

@ -15,11 +15,14 @@ fi
DOCKER_EXEC mkdir -p ${DEPENDS_DIR}/SDKs ${DEPENDS_DIR}/sdk-sources
if [ -n "$OSX_SDK" ] && [ ! -f ${DEPENDS_DIR}/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz ]; then
curl --location --fail $SDK_URL/MacOSX${OSX_SDK}.sdk.tar.gz -o ${DEPENDS_DIR}/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz
OSX_SDK_BASENAME="Xcode-${XCODE_VERSION}-${XCODE_BUILD_ID}-extracted-SDK-with-libcxx-headers.tar.gz"
OSX_SDK_PATH="${DEPENDS_DIR}/sdk-sources/${OSX_SDK_BASENAME}"
if [ -n "$XCODE_VERSION" ] && [ ! -f "$OSX_SDK_PATH" ]; then
curl --location --fail "${SDK_URL}/${OSX_SDK_BASENAME}" -o "$OSX_SDK_PATH"
fi
if [ -n "$OSX_SDK" ] && [ -f ${DEPENDS_DIR}/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz ]; then
DOCKER_EXEC tar -C ${DEPENDS_DIR}/SDKs -xf ${DEPENDS_DIR}/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz
if [ -n "$XCODE_VERSION" ] && [ -f "$OSX_SDK_PATH" ]; then
DOCKER_EXEC tar -C "${DEPENDS_DIR}/SDKs" -xf "$OSX_SDK_PATH"
fi
if [[ $HOST = *-mingw32 ]]; then
DOCKER_EXEC update-alternatives --set $HOST-g++ \$\(which $HOST-g++-posix\)

2
contrib/gitian-build.py
View file

@ -209,7 +209,7 @@ def main():
args.macos = 'm' in args.os
# Disable for MacOS if no SDK found
if args.macos and not os.path.isfile('gitian-builder/inputs/MacOSX10.14.sdk.tar.gz'):
if args.macos and not os.path.isfile('gitian-builder/inputs/Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz'):
print('Cannot build for MacOS, SDK does not exist. Will build for other OSes')
args.macos = False

4
contrib/gitian-descriptors/gitian-osx.yml
View file

@ -32,7 +32,7 @@ remotes:
- "url": "https://github.com/bitcoin/bitcoin.git"
"dir": "bitcoin"
files:
- "MacOSX10.14.sdk.tar.gz"
- "Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz"
script: |
set -e -o pipefail
@ -90,7 +90,7 @@ script: |
BASEPREFIX="${PWD}/depends"
mkdir -p ${BASEPREFIX}/SDKs
tar -C ${BASEPREFIX}/SDKs -xf ${BUILD_DIR}/MacOSX10.14.sdk.tar.gz
tar -C ${BASEPREFIX}/SDKs -xf ${BUILD_DIR}/Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz
# Build dependencies for each host
for i in $HOSTS; do

65
contrib/macdeploy/README.md
View file

@ -14,55 +14,44 @@ When complete, it will have produced `Bitcoin-Qt.dmg`.
## SDK Extraction
Our current macOS SDK (`macOSX10.14.sdk`) can be extracted from
[Xcode_10.2.1.xip](https://download.developer.apple.com/Developer_Tools/Xcode_10.2.1/Xcode_10.2.1.xip).
### Step 1: Obtaining `Xcode.app`
Our current macOS SDK
(`Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz`) can be
extracted from
[Xcode_11.3.1.xip](https://download.developer.apple.com/Developer_Tools/Xcode_11.3.1/Xcode_11.3.1.xip).
An Apple ID is needed to download this.
`Xcode.app` is packaged in a `.xip` archive.
This makes the SDK less-trivial to extract on non-macOS machines.
One approach (tested on Debian Buster) is outlined below:
After Xcode version 7.x, Apple started shipping the `Xcode.app` in a `.xip`
archive. This makes the SDK less-trivial to extract on non-macOS machines. One
approach (tested on Debian Buster) is outlined below:
```bash
# Install/clone tools needed for extracting Xcode.app
apt install cpio
git clone https://github.com/bitcoin-core/apple-sdk-tools.git
apt install clang cpio git liblzma-dev libxml2-dev libssl-dev make
git clone https://github.com/tpoechtrager/xar
pushd xar/xar
./configure
make
make install
popd
git clone https://github.com/NiklasRosenstein/pbzx
pushd pbzx
clang -llzma -lxar pbzx.c -o pbzx -Wl,-rpath=/usr/local/lib
popd
xar -xf Xcode_10.2.1.xip -C .
./pbzx/pbzx -n Content | cpio -i
find Xcode.app -type d -name MacOSX.sdk -exec sh -c 'tar --transform="s/MacOSX.sdk/MacOSX10.14.sdk/" -c -C$(dirname {}) MacOSX.sdk/ | gzip -9n > MacOSX10.14.sdk.tar.gz' \;
# Unpack Xcode_11.3.1.xip and place the resulting Xcode.app in your current
# working directory
python3 apple-sdk-tools/extract_xcode.py -f Xcode_11.3.1.xip | cpio -d -i
```
on macOS the process is more straightforward:
On macOS the process is more straightforward:
```bash
xip -x Xcode_10.2.1.xip
tar -s "/MacOSX.sdk/MacOSX10.14.sdk/" -C Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/ -czf MacOSX10.14.sdk.tar.gz MacOSX.sdk
xip -x Xcode_11.3.1.xip
```
Our previously used macOS SDK (`MacOSX10.11.sdk`) can be extracted from
[Xcode 7.3.1 dmg](https://developer.apple.com/devcenter/download.action?path=/Developer_Tools/Xcode_7.3.1/Xcode_7.3.1.dmg).
The script [`extract-osx-sdk.sh`](./extract-osx-sdk.sh) automates this. First
ensure the DMG file is in the current directory, and then run the script. You
may wish to delete the `intermediate 5.hfs` file and `MacOSX10.11.sdk` (the
directory) when you've confirmed the extraction succeeded.
### Step 2: Generating `Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz` from `Xcode.app`
To generate `Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz`, run
the script [`gen-sdk`](./gen-sdk) with the path to `Xcode.app` (extracted in the
previous stage) as the first argument.
```bash
apt-get install p7zip-full sleuthkit
contrib/macdeploy/extract-osx-sdk.sh
rm -rf 5.hfs MacOSX10.11.sdk
# Generate a Xcode-11.3.1-11C505-extracted-SDK-with-libcxx-headers.tar.gz from
# the supplied Xcode.app
./contrib/macdeploy/gen-sdk '/path/to/Xcode.app'
```
## Deterministic macOS DMG Notes
@ -91,13 +80,13 @@ and its `libLTO.so` rather than those from `llvmgcc`, as it was originally done
To complicate things further, all builds must target an Apple SDK. These SDKs are free to
download, but not redistributable. To obtain it, register for an Apple Developer Account,
then download [Xcode 10.2.1](https://download.developer.apple.com/Developer_Tools/Xcode_10.2.1/Xcode_10.2.1.xip).
then download [Xcode_11.3.1](https://download.developer.apple.com/Developer_Tools/Xcode_11.3.1/Xcode_11.3.1.xip).
This file is many gigabytes in size, but most (but not all) of what we need is
contained only in a single directory:
```bash
Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk
Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
```
See the SDK Extraction notes above for how to obtain it.

94
contrib/macdeploy/gen-sdk Executable file
View file

@ -0,0 +1,94 @@
#!/usr/bin/env python3
import argparse
import plistlib
import pathlib
import sys
import tarfile
import gzip
import os
import contextlib
@contextlib.contextmanager
def cd(path):
"""Context manager that restores PWD even if an exception was raised."""
old_pwd = os.getcwd()
os.chdir(str(path))
try:
yield
finally:
os.chdir(old_pwd)
def run():
parser = argparse.ArgumentParser(
description=__doc__, formatter_class=argparse.RawTextHelpFormatter)
parser.add_argument('xcode_app', metavar='XCODEAPP', nargs=1)
parser.add_argument("-o", metavar='OUTSDKTGZ', nargs=1, dest='out_sdktgz', required=False)
args = parser.parse_args()
xcode_app = pathlib.Path(args.xcode_app[0]).resolve()
assert xcode_app.is_dir(), "The supplied Xcode.app path '{}' either does not exist or is not a directory".format(xcode_app)
xcode_app_plist = xcode_app.joinpath("Contents/version.plist")
with xcode_app_plist.open('rb') as fp:
pl = plistlib.load(fp)
xcode_version = pl['CFBundleShortVersionString']
xcode_build_id = pl['ProductBuildVersion']
print("Found Xcode (version: {xcode_version}, build id: {xcode_build_id})".format(xcode_version=xcode_version, xcode_build_id=xcode_build_id))
sdk_dir = xcode_app.joinpath("Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk")
sdk_plist = sdk_dir.joinpath("System/Library/CoreServices/SystemVersion.plist")
with sdk_plist.open('rb') as fp:
pl = plistlib.load(fp)
sdk_version = pl['ProductVersion']
sdk_build_id = pl['ProductBuildVersion']
print("Found MacOSX SDK (version: {sdk_version}, build id: {sdk_build_id})".format(sdk_version=sdk_version, sdk_build_id=sdk_build_id))
out_name = "Xcode-{xcode_version}-{xcode_build_id}-extracted-SDK-with-libcxx-headers".format(xcode_version=xcode_version, xcode_build_id=xcode_build_id)
xcode_libcxx_dir = xcode_app.joinpath("Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1")
assert xcode_libcxx_dir.is_dir()
if args.out_sdktgz:
out_sdktgz_path = pathlib.Path(args.out_sdktgz_path)
else:
# Construct our own out_sdktgz if not specified on the command line
out_sdktgz_path = pathlib.Path("./{}.tar.gz".format(out_name))
def tarfp_add_with_base_change(tarfp, dir_to_add, alt_base_dir):
"""Add all files in dir_to_add to tarfp, but prepent MEMBERPREFIX to the files'
names
e.g. if the only file under /root/bazdir is /root/bazdir/qux, invoking:
tarfp_add_with_base_change(tarfp, "foo/bar", "/root/bazdir")
would result in the following members being added to tarfp:
foo/bar/ -> corresponding to /root/bazdir
foo/bar/qux -> corresponding to /root/bazdir/qux
"""
def change_tarinfo_base(tarinfo):
if tarinfo.name and tarinfo.name.startswith("./"):
tarinfo.name = str(pathlib.Path(alt_base_dir, tarinfo.name))
if tarinfo.linkname and tarinfo.linkname.startswith("./"):
tarinfo.linkname = str(pathlib.Path(alt_base_dir, tarinfo.linkname))
return tarinfo
with cd(dir_to_add):
tarfp.add(".", recursive=True, filter=change_tarinfo_base)
print("Creating output .tar.gz file...")
with out_sdktgz_path.open("wb") as fp:
with gzip.GzipFile(fileobj=fp, compresslevel=9, mtime=0) as gzf:
with tarfile.open(mode="w", fileobj=gzf) as tarfp:
print("Adding MacOSX SDK {} files...".format(sdk_version))
tarfp_add_with_base_change(tarfp, sdk_dir, out_name)
print("Adding libc++ headers...")
tarfp_add_with_base_change(tarfp, xcode_libcxx_dir, "{}/usr/include/c++/v1".format(out_name))
print("Done! Find the resulting gzipped tarball at:")
print(out_sdktgz_path.resolve())
if __name__ == '__main__':
run()

12
depends/hosts/darwin.mk
View file

@ -1,8 +1,12 @@
OSX_MIN_VERSION=10.12
OSX_SDK_VERSION=10.14
OSX_SDK=$(SDK_PATH)/MacOSX$(OSX_SDK_VERSION).sdk
darwin_CC=clang -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK)
darwin_CXX=clang++ -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -stdlib=libc++
OSX_SDK_VERSION=10.15.1
XCODE_VERSION=11.3.1
XCODE_BUILD_ID=11C505
LD64_VERSION=530
OSX_SDK=$(SDK_PATH)/Xcode-$(XCODE_VERSION)-$(XCODE_BUILD_ID)-extracted-SDK-with-libcxx-headers
darwin_CC=clang -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -mlinker-version=$(LD64_VERSION)
darwin_CXX=clang++ -target $(host) -mmacosx-version-min=$(OSX_MIN_VERSION) --sysroot $(OSX_SDK) -stdlib=libc++ -mlinker-version=$(LD64_VERSION)
darwin_CFLAGS=-pipe
darwin_CXXFLAGS=$(darwin_CFLAGS)

12
depends/packages/native_cctools.mk
View file

@ -1,14 +1,14 @@
package=native_cctools
$(package)_version=3764b223c011574971ee3ae09ce968ba5dc2f00f
$(package)_version=4da2f3b485bcf4cef526f30c0b8c0bcda99cdbb4
$(package)_download_path=https://github.com/tpoechtrager/cctools-port/archive
$(package)_file_name=$($(package)_version).tar.gz
$(package)_sha256_hash=3e35907bf376269a844df08e03cbb43e345c88125374f2228e03724b5f9a2a04
$(package)_sha256_hash=a2d491c0981cef72fee2b833598f20f42a6c44a7614a61c439bda93d56446fec
$(package)_build_subdir=cctools
$(package)_clang_version=6.0.1
$(package)_clang_version=8.0.0
$(package)_clang_download_path=https://releases.llvm.org/$($(package)_clang_version)
$(package)_clang_download_file=clang+llvm-$($(package)_clang_version)-x86_64-linux-gnu-ubuntu-14.04.tar.xz
$(package)_clang_file_name=clang-llvm-$($(package)_clang_version)-x86_64-linux-gnu-ubuntu-14.04.tar.xz
$(package)_clang_sha256_hash=fa5416553ca94a8c071a27134c094a5fb736fe1bd0ecc5ef2d9bc02754e1bef0
$(package)_clang_sha256_hash=9ef854b71949f825362a119bf2597f744836cb571131ae6b721cd102ffea8cd0
$(package)_libtapi_version=3efb201881e7a76a21e0554906cf306432539cef
$(package)_libtapi_download_path=https://github.com/tpoechtrager/apple-libtapi/archive
@ -72,7 +72,5 @@ define $(package)_stage_cmds
cp -P bin/clang++ $($(package)_staging_prefix_dir)/bin/ &&\
cp lib/libLTO.so $($(package)_staging_prefix_dir)/lib/ && \
cp -rf lib/clang/$($(package)_clang_version)/include/* $($(package)_staging_prefix_dir)/lib/clang/$($(package)_clang_version)/include/ && \
cp bin/llvm-dsymutil $($(package)_staging_prefix_dir)/bin/$(host)-dsymutil && \
if `test -d include/c++/`; then cp -rf include/c++/ $($(package)_staging_prefix_dir)/include/; fi && \
if `test -d lib/c++/`; then cp -rf lib/c++/ $($(package)_staging_prefix_dir)/lib/; fi
cp bin/dsymutil $($(package)_staging_prefix_dir)/bin/$(host)-dsymutil
endef