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fanquake 09ac6c81be
Merge bitcoin/bitcoin#23862: build, qt: Hardcode last modified timestamp in Qt RCC 
11736dbe3d build, qt: Hardcode last modified timestamp in Qt RCC (Hennadii Stepanov)

Pull request description:

  Our Guix build system sets the [`SOURCE_DATE_EPOCH`](https://reproducible-builds.org/specs/source-date-epoch/) and propagates it to the depends build subsystem. Its [default value](https://github.com/bitcoin/bitcoin/blob/master/contrib/guix/README.md#recognized-environment-variables) is the top commit timestamp.

  After bumping Qt version up to 5.15.2, due to [this](1ffcca4cc2) change, every time they are going to make new Guix builds for another branch/commit they must ensure that the `qt` package will be rebuilt from scratch. Otherwise, Bitcoin Core GUI binaries will be non-deterministic.

  Such behavior makes working with Guix builds suboptimal.

  This PR fixes the described issue by patching Qt RCC and hardcoding last modified timestamps with `1`.

  It's worth to mention that this change is compatible with a possible future [improvement](https://github.com/bitcoin/bitcoin/pull/21995) which makes each dependency package reproducible.

  A drawback of such an approach is not currently applied to our project, as it effectively makes [QML cache files](https://bugreports.qt.io/browse/QTBUG-57182) useless. I can't say it's a problem for the https://github.com/bitcoin-core/gui-qml project.

  ---

  **A note for thinkers:** For now this change is enough as only Qt source contains `SOURCE_DATE_EPOCH`. But in general we should re-think about treating the `SOURCE_DATE_EPOCH` variable in the depends build subsystem. For instance, its default value could be the output of `git log --format=%at -1 -- depends`.

ACKs for top commit:
  fanquake:
    ACK 11736dbe3d

Tree-SHA512: 31f104010a0a78d217aafcc5bc4606351f9060fc2a827277935b85fc8ced9f3d90a31d812c7db8c2711fb6daccd279cf0945dc1d7a7199e0eb0ade451cdbcd5d
2021-12-27 15:43:34 +08:00
..
builders build: Fix x86_64 <-> arm64 cross-compiling for macOS 2021-11-26 14:19:27 +02:00
hosts build: Switch to llvm buinutils for Android builds 2021-11-10 18:51:33 +02:00
packages build, qt: Hardcode last modified timestamp in Qt RCC 2021-12-25 23:00:37 +02:00
patches build, qt: Hardcode last modified timestamp in Qt RCC 2021-12-25 23:00:37 +02:00
.gitignore depends: Support for S390X targets 2019-12-05 12:12:46 -05:00
config.guess depends: latest config.guess (2021-05-24) 2021-05-26 13:28:47 +08:00
config.site.in build: remove x-prefix comparisons 2021-12-03 21:03:35 +08:00
config.sub depends: latest config.sub (2021-04-30) 2021-05-26 13:30:18 +08:00
description.md doc: Fix whitespace errs in .md files, bitcoin.conf, Info.plist.in, and find_bdb48.m4 2019-09-17 03:21:22 -04:00
funcs.mk Merge bitcoin/bitcoin#22283: build: Replace $(AT) with .SILENT 2021-12-17 21:34:42 +01:00
gen_id depends: Fix id_string invocations 2021-04-08 20:17:20 -04:00
Makefile Merge bitcoin/bitcoin#22283: build: Replace $(AT) with .SILENT 2021-12-17 21:34:42 +01:00
packages.md doc: Fix typos in packages.md 2021-11-28 18:13:52 +02:00
README.md doc: Drop outdated note 2021-12-25 15:41:58 +02:00

README.md

Usage

To build dependencies for the current arch+OS:

make

To build for another arch/OS:

make HOST=host-platform-triplet

For example:

make HOST=x86_64-w64-mingw32 -j4

Bitcoin Core's configure script by default will ignore the depends output. In order for it to pick up libraries, tools, and settings from the depends build, you must set the CONFIG_SITE environment variable to point to a config.site settings file. In the above example, a file named depends/x86_64-w64-mingw32/share/config.site will be created. To use it during compilation:

CONFIG_SITE=$PWD/depends/x86_64-w64-mingw32/share/config.site ./configure

The default install prefix when using config.site is --prefix=depends/<host-platform-triplet>, so depends build outputs will be installed in that location.

Common host-platform-triplets for cross compilation are:

  • i686-pc-linux-gnu for Linux 32 bit
  • x86_64-pc-linux-gnu for x86 Linux
  • x86_64-w64-mingw32 for Win64
  • x86_64-apple-darwin for macOS
  • arm-linux-gnueabihf for Linux ARM 32 bit
  • aarch64-linux-gnu for Linux ARM 64 bit
  • powerpc64-linux-gnu for Linux POWER 64-bit (big endian)
  • powerpc64le-linux-gnu for Linux POWER 64-bit (little endian)
  • riscv32-linux-gnu for Linux RISC-V 32 bit
  • riscv64-linux-gnu for Linux RISC-V 64 bit
  • s390x-linux-gnu for Linux S390X
  • armv7a-linux-android for Android ARM 32 bit
  • aarch64-linux-android for Android ARM 64 bit
  • x86_64-linux-android for Android x86 64 bit

The paths are automatically configured and no other options are needed unless targeting Android.

Install the required dependencies: Ubuntu & Debian

For macOS cross compilation

sudo apt-get install curl librsvg2-bin libtiff-tools bsdmainutils cmake imagemagick libz-dev python3-setuptools libtinfo5 xorriso

Note: You must obtain the macOS SDK before proceeding with a cross-compile. Under the depends directory, create a subdirectory named SDKs. Then, place the extracted SDK under this new directory. For more information, see SDK Extraction.

For Win64 cross compilation

For linux (including i386, ARM) cross compilation

Common linux dependencies:

sudo apt-get install make automake cmake curl g++-multilib libtool binutils-gold bsdmainutils pkg-config python3 patch bison

For linux ARM cross compilation:

sudo apt-get install g++-arm-linux-gnueabihf binutils-arm-linux-gnueabihf

For linux AARCH64 cross compilation:

sudo apt-get install g++-aarch64-linux-gnu binutils-aarch64-linux-gnu

For linux POWER 64-bit cross compilation (there are no packages for 32-bit):

sudo apt-get install g++-powerpc64-linux-gnu binutils-powerpc64-linux-gnu g++-powerpc64le-linux-gnu binutils-powerpc64le-linux-gnu

For linux RISC-V 64-bit cross compilation (there are no packages for 32-bit):

sudo apt-get install g++-riscv64-linux-gnu binutils-riscv64-linux-gnu

For linux S390X cross compilation:

sudo apt-get install g++-s390x-linux-gnu binutils-s390x-linux-gnu

Dependency Options

The following can be set when running make: make FOO=bar

  • SOURCES_PATH: Downloaded sources will be placed here
  • BASE_CACHE: Built packages will be placed here
  • SDK_PATH: Path where SDKs can be found (used by macOS)
  • FALLBACK_DOWNLOAD_PATH: If a source file can't be fetched, try here before giving up
  • NO_QT: Don't download/build/cache Qt and its dependencies
  • NO_QR: Don't download/build/cache packages needed for enabling qrencode
  • NO_ZMQ: Don't download/build/cache packages needed for enabling ZeroMQ
  • NO_WALLET: Don't download/build/cache libs needed to enable the wallet
  • NO_BDB: Don't download/build/cache BerkeleyDB
  • NO_SQLITE: Don't download/build/cache SQLite
  • NO_UPNP: Don't download/build/cache packages needed for enabling UPnP
  • NO_NATPMP: Don't download/build/cache packages needed for enabling NAT-PMP
  • ALLOW_HOST_PACKAGES: Packages that are missed in dependencies (due to NO_* option or build script logic) are searched for among the host system packages using pkg-config. It allows building with packages of other (newer) versions
  • MULTIPROCESS: Build libmultiprocess (experimental, requires CMake)
  • DEBUG: Disable some optimizations and enable more runtime checking
  • HOST_ID_SALT: Optional salt to use when generating host package ids
  • BUILD_ID_SALT: Optional salt to use when generating build package ids
  • FORCE_USE_SYSTEM_CLANG: (EXPERTS ONLY) When cross-compiling for macOS, use Clang found in the system's $PATH rather than the default prebuilt release of Clang from llvm.org. Clang 8 or later is required.

If some packages are not built, for example make NO_WALLET=1, the appropriate options will be passed to bitcoin's configure. In this case, --disable-wallet.

Additional targets

download: run 'make download' to fetch all sources without building them
download-osx: run 'make download-osx' to fetch all sources needed for macOS builds
download-win: run 'make download-win' to fetch all sources needed for win builds
download-linux: run 'make download-linux' to fetch all sources needed for linux builds

Other documentation