The main explanation was taken from commit:
e999def1 zlib: clean up static/shared distincion
The `SHARED_MODE=1` bit was originally introduced in commit:
0bfc84b0 Cross-compile zlib for Windows
This is kind of a mess, but basically:
- static=true, shared=true means to build statically but move it to
the static output
- static=true, shared=false means to build statically and leave it in
the main output
- static=false, shared=true means to not build static at all
Confusingly, the old default was static=true, shared=true even though
static=false? Still can’t figure out what was meant by that.
1. CHOST is how one specifies the cross host platform with this
non-standard configure script. We were just getting lucky with Linux
cross.
2. install_name_tool needs the the binutils prefix.
* treewide: http -> https sources
This updates the source urls of all top-level packages from http to
https where possible.
* buildtorrent: fix url and tab -> spaces
Certain tools, e.g. compilers, are customarily prefixed with the name of
their target platform so that multiple builds can be used at once
without clobbering each other on the PATH. I was using identifiers named
`prefix` for this purpose, but that conflicts with the standard use of
`prefix` to mean the directory where something is installed. To avoid
conflict and confusion, I renamed those to `targetPrefix`.
Packages get --host and --target by default, but can explicitly request
any subset to be passed as needed. See docs for more info.
rustc: Avoid hash breakage by using the old (ignored)
dontSetConfigureCross when not cross building
Look for primary source file below
http://zlib.net/fossils/ as opposed to
http://zlib.net/
. zlib-1.2.8.tar.gz is still available at the former location, and will likely
remain there. In addition, it's important that the first URL work since zlib
is in the bootstrap path, and 16.09 (at least) bootstrap doesn't try to fetch
from later ones.
The following parameters are now available:
* hardeningDisable
To disable specific hardening flags
* hardeningEnable
To enable specific hardening flags
Only the cc-wrapper supports this right now, but these may be reused by
other wrappers, builders or setup hooks.
cc-wrapper supports the following flags:
* fortify
* stackprotector
* pie (disabled by default)
* pic
* strictoverflow
* format
* relro
* bindnow
- there were many easy merge conflicts
- cc-wrapper needed nontrivial changes
Many other problems might've been created by interaction of the branches,
but stdenv and a few other packages build fine now.
This includes a lot of fixes for cross-building to Windows and Mac OS X
and could possibly fix things even for non-cross-builds, like for
example OpenSSL on Windows.
The main reason for merging this in 14.04 already is that we already
have runInWindowsVM in master and it doesn't work until we actually
cross-build Cygwin's setup binary as the upstream version is a fast
moving target which gets _overwritten_ on every new release.
Conflicts:
pkgs/top-level/all-packages.nix
