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Taken from Mesa configure script:
https://github.com/mesa3d/mesa/blob/17.2/configure.ac#L405-L427
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Fixes #3113
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cd8bc06e8786018ddb16cea4cb10971b63d0efd2, c3db9e6f8fd06d691be04cdd95a6bb21a400481d
This breaks the tarball job: https://hydra.nixos.org/build/95714570
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This should finally allow us to address all cases of build errors due to
differences between release tarballs and building from git.
See also https://github.com/NixOS/nix/issues/506#issuecomment-507312587
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This is to avoid confusion as in commit
a0d29040f79b365598fe75d01f72d29ab538206b.
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Also give a helpful error message on what package the user likely
has to install to make it work.
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Our use of boost::coroutine2 depends on -lboost_context,
which in turn depends on `-lboost_thread`, which in turn depends
on `-lboost_system`.
I suspect that this builds on nix only because of low-level hacks
like NIX_LDFLAGS.
This commit passes the proper linker flags, thus fixing bootstrap
builds on non-nix distributions like Ubuntu 16.04.
With these changes, I can build Nix on Ubuntu 16.04 using:
./bootstrap.sh
./configure --prefix=$HOME/editline-prefix \
--disable-doc-gen \
CXX=g++-7 \
--with-boost=$HOME/boost-prefix \
EDITLINE_CFLAGS=-I$HOME/editline-prefix/include \
EDITLINE_LIBS=-leditline \
LDFLAGS=-L$HOME/editline-prefix/lib
make
where
* g++-7 comes from gcc-7 from
https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test,
* editline 1.14 from https://github.com/troglobit/editline/releases/tag/1.14.0
was installed into `$HOME/editline-prefix`
(because Ubuntu 16.04's `editline` is too old to have the function nix uses),
* boost 1.66 from
https://www.boost.org/doc/libs/1_66_0/more/getting_started/unix-variants.html
was installed into $HOME/boost-prefix (because Ubuntu 16.04 only has 1.58)
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As is normal for autoconf-based projects.
For example, it is a common use case to do
./configure CXXFLAGS=-O0
This did not work for nix until now, because the `CXXFLAGS=` declaration
would unconditionally erase what the user had specified.
The custom `OPTIMIZE` flag is removed, but the default `-O3` is retained;
autoconf would default to `-g -O2` by default otherwise as documented on:
https://www.gnu.org/software/autoconf/manual/autoconf-2.60/html_node/C-Compiler.html
https://www.gnu.org/software/autoconf/manual/autoconf-2.60/html_node/C_002b_002b-Compiler.html
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That was incorrect, because checking the dirent type already requires
a working compiler.
It had the effect that setting e.g. `: ${CFLAGS=""}` before `AC_PROG_CC`
as per `AC_PROG_CC`'s documentation would have no effect, because
`AC_STRUCT_DIRENT_D_TYPE` would automatically set CFLASGS.
(In a followup commit `: ${CFLAGS=""}` will be used, so it's important
to get this working first.)
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And probably many other distributions.
Until now, ./configure would fail silently printing a warning
./configure: line 4621: AX_CXX_COMPILE_STDCXX_17: command not found
and then continuing, later failing with a C++ #error saying that some C++11
feature isn't supported (it didn't even get to the C++17 features).
This is because older distributions don't come with the
`AX_CXX_COMPILE_STDCXX_17` m4 macro.
This commit vendors that macro accordingly.
Now ./configure complains correctly:
configure: error: *** A compiler with support for C++17 language features is required.
On Ubuntu 16.04, ./configure completes if a newer compiler is used, e.g. with
gcc-7 from https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test
using:
./bootstrap.sh
./configure CXX=g++-7 --disable-doc-gen --with-boost=$(nix-build --no-link '<nixpkgs>' -A boost.dev)
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And probably other Linux distributions with long-term support releases.
Also update manual stating what version is needed;
I checked that 1.14 is the oldest version with which current nix compiles,
and added autoconf feature checks for some functions added in that release
that nix uses.
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This turns previous compiler errors complaining about missing files
into proper ./configure time errors telling the user which version
of boost is required.
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The unbalanced single-quotes cause many editor syntax highlighters
to interpret the rest of the file as a string literal, making it easier
to make syntax mistakes in absence of proper highlighting.
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This fixes warnings about "structured binding declaration" requiring
"-std=c++1z".
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This tells Nix to not build the shared libraries.
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This reverts commit e8b0efdcc9d6329b299937790360cac8b9b256c9.
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This reverts commit 80f464d9d72839841422f75e78ce725365cc3d71.
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This patch attempts to solve the regression introduced in e8b0efdc
(#2607).
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Remove some bashisms from configure.ac
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The manual reference was commented out, and the sole reference to this
program other than the configure script. Removed both.
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"configure.ac" is used to generate "configure", which is supposed to be
run with /bin/sh (as suggested by the shebang line of "configure"). As a
result it is a good idea to remove any /bin/sh-incompatible syntax from
configure.ac. Otherwise, systems that do not use Bash as their /bin/sh
are unable to run "configure" due to syntax errors.
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Fixes #2396.
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It's all dead code since 2014 (commit 0c6d62cf27b3b2).
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Happily the failing tests should prevent anyone from using such a Nix
in situations where they expect sandboxing to be on,
which would otherwise be a risk.
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configure.ac: check if lzma has MT support, fix deb build/etc.
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This is needed for new arches where libseccomp support doesn't exist
yet.
Fixes #1878.
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The latter breaks in the case of cross-compilation, when `cpp` bears a
target prefix.
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* Look for both 'brotli' and 'bro' as external command,
since upstream has renamed it in newer versions.
If neither are found, current runtime behavior
is preserved: try to find 'bro' on PATH.
* Limit amount handed to BrotliEncoderCompressStream
to ensure interrupts are processed in a timely manner.
Testing shows negligible performance impact.
(Other compression sinks don't seem to require this)
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This prevents builders from setting the S_ISUID or S_ISGID bits,
preventing users from using a nixbld* user to create a setuid/setgid
binary to interfere with subsequent builds under the same nixbld* uid.
This is based on aszlig's seccomp code
(47f587700d646f5b03a42f2fa57c28875a31efbe).
Reported by Linus Heckemann.
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And add a 116 KiB ash shell from busybox to the release build. This
helps to make sandbox builds work out of the box on non-NixOS systems
and with diverted stores.
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Using linenoise avoids a license compatibility issue (#1356), is a lot
smaller and doesn't pull in ncurses.
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Also, don't use lsof on Linux since it's not needed.
Fixes #1328.
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Build logs on cache.nixos.org are compressed using Brotli (since this
allows them to be decompressed automatically by Chrome and Firefox),
so it's handy if "nix log" can decompress them.
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