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This cuts 'make install -j6' on my laptop from 170s to 134s.
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autotools-based systems usually allow user to
append own LDFLAGS like
LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu"
at ./configure stage
This change plumbs LDFLAGS through similar to existing CXXFLAGS variable.
Signed-off-by: Sergei Trofimovich <siarheit@google.com>
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This tells Nix to not build the shared libraries.
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All plugins in plugin-files will be dlopened, allowing them to
statically construct instances of the various Register* types Nix
supports.
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In this mode, the following restrictions apply:
* The builtins currentTime, currentSystem and storePath throw an
error.
* $NIX_PATH and -I are ignored.
* fetchGit and fetchMercurial require a revision hash.
* fetchurl and fetchTarball require a sha256 attribute.
* No file system access is allowed outside of the paths returned by
fetch{Git,Mercurial,url,Tarball}. Thus 'nix build -f ./foo.nix' is
not allowed.
Thus, the evaluation result is completely reproducible from the
command line arguments. E.g.
nix build --pure-eval '(
let
nix = fetchGit { url = https://github.com/NixOS/nixpkgs.git; rev = "9c927de4b179a6dd210dd88d34bda8af4b575680"; };
nixpkgs = fetchGit { url = https://github.com/NixOS/nixpkgs.git; ref = "release-17.09"; rev = "66b4de79e3841530e6d9c6baf98702aa1f7124e4"; };
in (import (nix + "/release.nix") { inherit nix nixpkgs; }).build.x86_64-linux
)'
The goal is to enable completely reproducible and traceable
evaluation. For example, a NixOS configuration could be fully
described by a single Git commit hash. 'nixos-rebuild' would do
something like
nix build --pure-eval '(
(import (fetchGit { url = file:///my-nixos-config; rev = "..."; })).system
')
where the Git repository /my-nixos-config would use further fetchGit
calls or Git externals to fetch Nixpkgs and whatever other
dependencies it has. Either way, the commit hash would uniquely
identify the NixOS configuration and allow it to reproduced.
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Also, don't depend on tput (ncurses). It's really not needed since
ANSI escape sequences have been standardized for 35 years or so.
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This fixed the build on ubuntu/debian, where dash is the sh.
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I got sick of trying to find the failures in the sea of debug output, so
we now:
- Hide test output unless it fails
- Sprinkle in some simple color
- Pad results for a more tabular look
If Nix is getting a more friendly user interface, we might as well get
a friendlier developer interface, right? :)
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this is needed for pipe2()
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This reverts commit f78126bfd6b6c8477fcdbc09b2f98772dbe9a1e7. There
really is no need for such a massive change...
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Eventually the nested if statements should be replaced by a more general
condition, but this is sufficient to make it work on FreeBSD.
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1. Shared lib extension is .dll
2. Shared libs are installed to $(prefix)/bin
3. Linker does not support -z flag
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3.81 doesn't understand the ‘define foo =’ syntax, which was added in
3.82. So use ‘define foo’ instead.
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git-subtree-dir: mk
git-subtree-mainline: 6ef32bddc1f10034322966b3a5b85af7b9cdc4d8
git-subtree-split: 1eff3ad37fdb9dcf9f8528fdacea0ebf0e79d545
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This makes it easier to use with "git subtree".
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Source: http://blog.jgc.org/2011/07/gnu-make-recursive-wildcard-function.html
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This way, we can use config.status for generating scripts/* (without
ending up with lines like "#! /usr/bin/perl -I${libexecdir}/...").
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