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e838a9847580527b8321d65e57b1c53cc2af6bf4 depends: re-enable using -flto when building expat (fanquake) 304452558c7f6f5e32ba13d8f05325790c8a4f5f depends: expat 2.4.8 (fanquake) Pull request description: Currently, when building the expat package in depends, using `-flto` (`LTO=1`), the configure check can fail, because it cannot determine the system endianess: ```bash configure:18718: result: unknown configure:18733: error: unknown endianness presetting ac_cv_c_bigendian=no (or yes) will help ``` Fix that by defining `_DEFAULT_SOURCE`, which in turn defines `__USE_MISC` (`features.h`): ```c #if defined _DEFAULT_SOURCE # define __USE_MISC1 #endif ``` which exposes additional definitions in `endian.h`: ```c #include <features.h> /* Get the definitions of __*_ENDIAN, __BYTE_ORDER, and __FLOAT_WORD_ORDER. */ #include <bits/endian.h> #ifdef __USE_MISC # define LITTLE_ENDIAN__LITTLE_ENDIAN # define BIG_ENDIAN__BIG_ENDIAN # define PDP_ENDIAN__PDP_ENDIAN # define BYTE_ORDER__BYTE_ORDER #endif ``` and gives us a working configure. You could test building this change with Guix + LTO with [this branch](https://github.com/fanquake/bitcoin/tree/lto_in_guix). Note that that build may fail for other reasons (on x86_64), unrelated to this change. Some related upstream discussion: https://bugs.gentoo.org/757681 https://forums.gentoo.org/viewtopic-t-1013786.html ACKs for top commit: hebasto: re-ACK e838a9847580527b8321d65e57b1c53cc2af6bf4, only [suggested](https://github.com/bitcoin/bitcoin/pull/25697#discussion_r929735675) changes since my recent [review](https://github.com/bitcoin/bitcoin/pull/25697#pullrequestreview-1050657421). jarolrod: code review ACK e838a9847580527b8321d65e57b1c53cc2af6bf4 Tree-SHA512: 9dbf64c9bd1fd995a4d1addc011ffeff83d50df736030012346c97605e63aed4b5bac390a81abe646c1be28ad6fd600f64560dcb26bbc2edf5d513ca3b180bfa
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-gnufor Linux 32 bitx86_64-pc-linux-gnufor x86 Linuxx86_64-w64-mingw32for Win64x86_64-apple-darwinfor macOSarm64-apple-darwinfor ARM macOSarm-linux-gnueabihffor Linux ARM 32 bitaarch64-linux-gnufor Linux ARM 64 bitpowerpc64-linux-gnufor Linux POWER 64-bit (big endian)powerpc64le-linux-gnufor Linux POWER 64-bit (little endian)riscv32-linux-gnufor Linux RISC-V 32 bitriscv64-linux-gnufor Linux RISC-V 64 bits390x-linux-gnufor Linux S390Xarmv7a-linux-androidfor Android ARM 32 bitaarch64-linux-androidfor Android ARM 64 bitx86_64-linux-androidfor 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 bsdmainutils cmake 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
- see build-windows.md
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
Install the required dependencies: OpenBSD
pkg_add bash gtar
Dependency Options
The following can be set when running make: make FOO=bar
SOURCES_PATH: Downloaded sources will be placed hereBASE_CACHE: Built packages will be placed hereSDK_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 upC_STANDARD: Set the C standard version used. Defaults toc11.CXX_STANDARD: Set the C++ standard version used. Defaults toc++17.NO_QT: Don't download/build/cache Qt and its dependenciesNO_QR: Don't download/build/cache packages needed for enabling qrencodeNO_ZMQ: Don't download/build/cache packages needed for enabling ZeroMQNO_WALLET: Don't download/build/cache libs needed to enable the walletNO_BDB: Don't download/build/cache BerkeleyDBNO_SQLITE: Don't download/build/cache SQLiteNO_UPNP: Don't download/build/cache packages needed for enabling UPnPNO_NATPMP: Don't download/build/cache packages needed for enabling NAT-PMPALLOW_HOST_PACKAGES: Packages that are missed in dependencies (due toNO_*option or build script logic) are searched for among the host system packages usingpkg-config. It allows building with packages of other (newer) versionsMULTIPROCESS: Build libmultiprocess (experimental, requires CMake)DEBUG: Disable some optimizations and enable more runtime checkingHOST_ID_SALT: Optional salt to use when generating host package idsBUILD_ID_SALT: Optional salt to use when generating build package idsFORCE_USE_SYSTEM_CLANG: (EXPERTS ONLY) When cross-compiling for macOS, use Clang found in the system's$PATHrather than the default prebuilt release of Clang from llvm.org. Clang 8 or later is requiredLOG: Use file-based logging for individual packages. During a package build its log file resides in thedependsdirectory, and the log file is printed out automatically in case of build error. After successful build log files are moved along with package archivesLTO: Use LTO when building packages.
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
- description.md: General description of the depends system
- packages.md: Steps for adding packages