dash/depends
Cory Fields b5f374fef7 qt: fix build with zlib for target
This contains a few hacks very specific to Qt's buildsystem. These can be
reverted once we split the build between native and target builds.

Qt's build contains a circular dependency when not using a system zlib.
By far the easiest fix is to switch to a system zlib, rather than Qt's own.
However, that confuses Qt's cross build which assumes that when using a system
zlib, it should also find a system (native) zlib for native tools. The build
breaks if that zlib is not present.

To solve this:
1. Always use a system zlib rather than the one provided by qt
2. Set force_bootstrap, which instructs the build tools to be built as though
   we're cross-compiling (build != target)
3. For build tools, use qt's internal zlib so that a native zlib is not
required.

Step 3 means that if any zlib headers are found by the native build, it will
confuse Qt's internal zlib build. So we also need to make sure that the target
headers/libs aren't found. To do so, specify that our
cflags/cxxflags/cppflags/ldflags only apply for non-host builds.
2017-01-28 01:54:30 -05:00
..
builders [depends] Add -stdlib=libc++ to darwin CXX flags 2016-05-04 19:03:59 +08:00
hosts [depends] Set OSX_MIN_VERSION to 10.8 2016-11-09 18:55:04 +08:00
packages qt: fix build with zlib for target 2017-01-28 01:54:30 -05:00
patches qt: fix build with zlib for target 2017-01-28 01:54:30 -05:00
.gitignore [trivial] Add aarch64 to depends .gitignore 2016-06-24 15:01:45 +08:00
config.guess [depends] Latest config.guess and config.sub 2017-01-11 08:44:01 +08:00
config.site.in [depends] Remove OBJCXX define from config.site.in 2017-01-14 14:26:00 +08:00
config.sub [depends] Latest config.guess and config.sub 2017-01-11 08:44:01 +08:00
description.md doc: Documentation in Markdown for Depends Dir 2015-05-15 12:35:20 +02:00
funcs.mk depends: fix fallback downloads 2016-04-04 19:26:44 -04:00
Makefile depends: only build qt on linux for x86_64/x86 2016-06-10 05:29:52 -04:00
packages.md doc: Documentation in Markdown for Depends Dir 2015-05-15 12:35:20 +02:00
README.md depends: Mention aarch64 as common cross-compile target 2016-06-22 14:37:39 +02:00

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

A prefix will be generated that's suitable for plugging into Bitcoin's configure. In the above example, a dir named x86_64-w64-mingw32 will be created. To use it for Bitcoin:

./configure --prefix=`pwd`/depends/x86_64-w64-mingw32

Common host-platform-triplets for cross compilation are:

  • i686-w64-mingw32 for Win32
  • x86_64-w64-mingw32 for Win64
  • x86_64-apple-darwin11 for MacOSX
  • arm-linux-gnueabihf for Linux ARM 32 bit
  • aarch64-linux-gnu for Linux ARM 64 bit

No other options are needed, the paths are automatically configured.

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 sdk's can be found (used by OSX)
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_WALLET: Don't download/build/cache libs needed to enable the wallet
NO_UPNP: Don't download/build/cache packages needed for enabling upnp
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

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 osx 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