lix/package.nix
Qyriad b913a939b0 meson: flip the switch!!
This commit makes Meson the default buildsystem for Lix.
The Make buildsystem is now deprecated and will be removed soon, but has
not yet, which will be done in a later commit when all seems good. The
mesonBuild jobs have been removed, and have not been replaced with
equivalent jobs to ensure the Make buildsystem still works.

The full, new commands in a development shell are:

$ meson setup ./build "--prefix=$out" $mesonFlags

(A simple `meson setup ./build` will also build, but will do a different
thing, not having the settings from package.nix applied.)

$ meson compile -C build
$ meson test -C build --suite=check
$ meson install -C build
$ meson test -C build --suite=installcheck

(Check and installcheck may both be done after install, allowing you to
omit the --suite argument entirely, but this is the order package.nix
runs them in.)

If tests fail and Meson helpfully has no output for why, use the
`--print-error-logs` option to `meson test`. Why this is not the default
I cannot explain.

If you change a setting in the buildsystem, most cases will
automatically regenerate the Meson configuration, but some cases, like
trying to build a specific target whose name is new to the buildsystem
(e.g. `meson compile -C build src/libmelt/libmelt.dylib`, when
`libmelt.dylib` did not exist as a target the last time the buildsystem
was generated), then you can reconfigure using new settings but
existing options, and only recompiling stuff affected by the changes:

$ meson setup --reconfigure build

Note that changes to the default values in `meson.options` or in the
`default_options :` argument to project() are NOT propagated with
`--reconfigure`.

If you want a totally clean build, you can use:

$ meson setup --wipe build

That will work regardless of if `./build` exists or not.

Specific, named targets may be addressed in
`meson build -C build <target>` with the "target ID" if there is one,
which is the first string argument passed to target functions that
have one, and unrelated to the variable name, e.g.:

libexpr_dylib = library('nixexpr', …)

can be addressed with:

$ meson compile -C build nixexpr

All targets may be addressed as their output, relative to the build
directory, e.g.:

$ meson compile -C build src/libexpr/libnixexpr.so

But Meson does not consider intermediate files like object files
targets. To build a specific object file, use Ninja directly and
specify the output file relative to the build directory:

$ ninja -C build src/libexpr/libnixexpr.so.p/nixexpr.cc.o

To inspect the canonical source of truth on what the state of the
buildsystem configuration is, use:

$ meson introspect

Have fun!

Change-Id: Ia3e7b1e6fae26daf3162e655b4ded611a5cd57ad
2024-04-22 21:41:58 -06:00

427 lines
13 KiB
Nix

{
pkgs,
lib,
stdenv,
autoconf-archive,
autoreconfHook,
aws-sdk-cpp,
# If the patched version of Boehm isn't passed, then patch it based off of
# pkgs.boehmgc. This allows `callPackage`ing this file without needing to
# to implement behavior that this package flat out doesn't build without
# anyway, but also allows easily overriding the patch logic.
boehmgc-nix ? __forDefaults.boehmgc-nix,
boehmgc,
nlohmann_json,
bison,
build-release-notes,
boost,
brotli,
bzip2,
cmake,
curl,
doxygen,
editline,
flex,
git,
gtest,
jq,
libarchive,
libcpuid,
libseccomp,
libsodium,
lsof,
lowdown,
mdbook,
mdbook-linkcheck,
mercurial,
meson,
ninja,
openssl,
pkg-config,
python3,
rapidcheck,
sqlite,
toml11,
util-linuxMinimal ? utillinuxMinimal,
utillinuxMinimal ? null,
xz,
busybox-sandbox-shell,
# internal fork of nix-doc providing :doc in the repl
lix-doc ? __forDefaults.lix-doc,
pname ? "nix",
versionSuffix ? "",
officialRelease ? true,
# Set to true to build the release notes for the next release.
buildUnreleasedNotes ? false,
internalApiDocs ? false,
# Avoid setting things that would interfere with a functioning devShell
forDevShell ? false,
# FIXME(Qyriad): build Lix using Meson instead of autoconf and make.
# This flag will be removed when the migration to Meson is complete.
buildWithMeson ? true,
# Not a real argument, just the only way to approximate let-binding some
# stuff for argument defaults.
__forDefaults ? {
canRunInstalled = stdenv.buildPlatform.canExecute stdenv.hostPlatform;
boehmgc-nix = (boehmgc.override { enableLargeConfig = true; }).overrideAttrs {
patches = [
# We do *not* include prev.patches (which doesn't exist in normal pkgs.boehmgc anyway)
# because if the caller of this package passed a patched boehm as `boehmgc` instead of
# `boehmgc-nix` then this will almost certainly have duplicate patches, which means
# the patches won't apply and we'll get a build failure.
./boehmgc-coroutine-sp-fallback.diff
# https://github.com/ivmai/bdwgc/pull/586
./boehmgc-traceable_allocator-public.diff
];
};
lix-doc = pkgs.callPackage ./lix-doc/package.nix { };
},
}:
let
inherit (__forDefaults) canRunInstalled;
inherit (lib) fileset;
version = lib.fileContents ./.version + versionSuffix;
aws-sdk-cpp-nix = aws-sdk-cpp.override {
apis = [
"s3"
"transfer"
];
customMemoryManagement = false;
};
testConfigureFlags = [ "RAPIDCHECK_HEADERS=${lib.getDev rapidcheck}/extras/gtest/include" ];
# Reimplementation of Nixpkgs' Meson cross file, with some additions to make
# it actually work.
mesonCrossFile =
let
cpuFamily =
platform:
with platform;
if isAarch32 then
"arm"
else if isx86_32 then
"x86"
else
platform.uname.processor;
in
builtins.toFile "lix-cross-file.conf" ''
[properties]
bindgen_clang_arguments = ['-target', '${stdenv.targetPlatform.config}']
# Meson is convinced that if !buildPlatform.canExecute hostPlatform then we cannot
# build anything at all, which is not at all correct. If we can't execute the host
# platform, we'll just disable tests and doc gen.
needs_exe_wrapper = false
[host_machine]
system = '${stdenv.targetPlatform.parsed.kernel.name}'
cpu_family = '${cpuFamily stdenv.targetPlatform}'
cpu = '${stdenv.targetPlatform.parsed.cpu.name}'
endian = ${if stdenv.targetPlatform.isLittleEndian then "'little'" else "'big'"}
[binaries]
llvm-config = 'llvm-config-native'
rust = ['rustc', '--target', '${stdenv.targetPlatform.rust.rustcTargetSpec}']
# Meson refuses to consider any CMake binary during cross compilation if it's
# not explicitly specified here, in the cross file.
# https://github.com/mesonbuild/meson/blob/0ed78cf6fa6d87c0738f67ae43525e661b50a8a2/mesonbuild/cmake/executor.py#L72
cmake = 'cmake'
'';
# The internal API docs need these for the build, but if we're not building
# Nix itself, then these don't need to be propagated.
maybePropagatedInputs = [
boehmgc-nix
nlohmann_json
];
# .gitignore has already been processed, so any changes in it are irrelevant
# at this point. It is not represented verbatim for test purposes because
# that would interfere with repo semantics.
baseFiles = fileset.fileFilter (f: f.name != ".gitignore") ./.;
configureFiles = fileset.unions [
./.version
./configure.ac
./m4
# TODO: do we really need README.md? It doesn't seem used in the build.
./README.md
];
topLevelBuildFiles = fileset.unions (
[
./local.mk
./Makefile
./Makefile.config.in
./mk
]
++ lib.optionals buildWithMeson [
./meson.build
./meson.options
./meson
./scripts/meson.build
]
);
functionalTestFiles = fileset.unions [
./tests/functional
./tests/unit
(fileset.fileFilter (f: lib.strings.hasPrefix "nix-profile" f.name) ./scripts)
];
in
stdenv.mkDerivation (finalAttrs: {
inherit pname version;
src = fileset.toSource {
root = ./.;
fileset = fileset.intersection baseFiles (
fileset.unions (
[
configureFiles
topLevelBuildFiles
functionalTestFiles
]
++ lib.optionals (!finalAttrs.dontBuild || internalApiDocs) [
./boehmgc-coroutine-sp-fallback.diff
./doc
./misc
./precompiled-headers.h
./src
./COPYING
./scripts/local.mk
]
)
);
};
VERSION_SUFFIX = versionSuffix;
outputs =
[ "out" ]
++ lib.optionals (!finalAttrs.dontBuild) [
"dev"
"doc"
];
dontBuild = false;
# FIXME(Qyriad): see if this is still needed once the migration to Meson is completed.
mesonFlags =
lib.optionals (buildWithMeson && stdenv.hostPlatform.isLinux) [
"-Dsandbox-shell=${lib.getBin busybox-sandbox-shell}/bin/busybox"
]
++ lib.optional stdenv.hostPlatform.isStatic "-Denable-embedded-sandbox-shell=true"
++ lib.optional (finalAttrs.dontBuild) "-Denable-build=false"
++ [
# mesonConfigurePhase automatically passes -Dauto_features=enabled,
# so we must explicitly enable or disable features that we are not passing
# dependencies for.
(lib.mesonEnable "internal-api-docs" internalApiDocs)
(lib.mesonBool "enable-tests" finalAttrs.doCheck)
(lib.mesonBool "enable-docs" canRunInstalled)
]
++ lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) "--cross-file=${mesonCrossFile}";
# We only include CMake so that Meson can locate toml11, which only ships CMake dependency metadata.
dontUseCmakeConfigure = true;
nativeBuildInputs =
[
bison
flex
python3
]
++ [
(lib.getBin lowdown)
mdbook
mdbook-linkcheck
autoconf-archive
]
++ lib.optional (!buildWithMeson) autoreconfHook
++ [
pkg-config
# Tests
git
mercurial
jq
lsof
]
++ lib.optional stdenv.hostPlatform.isLinux util-linuxMinimal
++ lib.optional (!officialRelease && buildUnreleasedNotes) build-release-notes
++ lib.optional (internalApiDocs || forDevShell) doxygen
++ lib.optionals buildWithMeson [
meson
ninja
cmake
];
buildInputs =
[
curl
bzip2
xz
brotli
editline
openssl
sqlite
libarchive
boost
lowdown
libsodium
toml11
lix-doc
]
++ lib.optionals stdenv.hostPlatform.isLinux [
libseccomp
busybox-sandbox-shell
]
++ lib.optional internalApiDocs rapidcheck
++ lib.optional stdenv.hostPlatform.isx86_64 libcpuid
# There have been issues building these dependencies
++ lib.optional (stdenv.hostPlatform == stdenv.buildPlatform) aws-sdk-cpp-nix
++ lib.optionals (finalAttrs.dontBuild) maybePropagatedInputs;
checkInputs = [
gtest
rapidcheck
];
propagatedBuildInputs = lib.optionals (!finalAttrs.dontBuild) maybePropagatedInputs;
disallowedReferences = [ boost ];
# Needed for Meson to find Boost.
# https://github.com/NixOS/nixpkgs/issues/86131.
env = lib.optionalAttrs (buildWithMeson || forDevShell) {
BOOST_INCLUDEDIR = "${lib.getDev boost}/include";
BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
};
preConfigure =
lib.optionalString (!finalAttrs.dontBuild && !stdenv.hostPlatform.isStatic) ''
# Copy libboost_context so we don't get all of Boost in our closure.
# https://github.com/NixOS/nixpkgs/issues/45462
mkdir -p $out/lib
cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*} $out/lib
rm -f $out/lib/*.a
''
+ lib.optionalString (!finalAttrs.dontBuild && stdenv.hostPlatform.isLinux) ''
chmod u+w $out/lib/*.so.*
patchelf --set-rpath $out/lib:${stdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
''
+ lib.optionalString (!finalAttrs.dontBuild && stdenv.hostPlatform.isDarwin) ''
for LIB in $out/lib/*.dylib; do
chmod u+w $LIB
install_name_tool -id $LIB $LIB
install_name_tool -delete_rpath ${boost}/lib/ $LIB || true
done
install_name_tool -change ${boost}/lib/libboost_system.dylib $out/lib/libboost_system.dylib $out/lib/libboost_thread.dylib
''
+ ''
# Workaround https://github.com/NixOS/nixpkgs/issues/294890.
if [[ -n "''${doCheck:-}" ]]; then
appendToVar configureFlags "--enable-tests"
else
appendToVar configureFlags "--disable-tests"
fi
'';
configureFlags =
[ "--with-boost=${boost}/lib" ]
++ lib.optionals stdenv.isLinux [ "--with-sandbox-shell=${busybox-sandbox-shell}/bin/busybox" ]
++ lib.optionals (
stdenv.isLinux && !(stdenv.hostPlatform.isStatic && stdenv.system == "aarch64-linux")
) [ "LDFLAGS=-fuse-ld=gold" ]
++ lib.optional stdenv.hostPlatform.isStatic "--enable-embedded-sandbox-shell"
++ lib.optionals (finalAttrs.doCheck || internalApiDocs) testConfigureFlags
++ lib.optional (!canRunInstalled) "--disable-doc-gen"
++ [ (lib.enableFeature internalApiDocs "internal-api-docs") ]
++ lib.optional (!forDevShell) "--sysconfdir=/etc"
++ [ "TOML11_HEADERS=${lib.getDev toml11}/include" ];
mesonBuildType = lib.optional (buildWithMeson || forDevShell) "debugoptimized";
installTargets = lib.optional internalApiDocs "internal-api-html";
enableParallelBuilding = true;
makeFlags = "profiledir=$(out)/etc/profile.d PRECOMPILE_HEADERS=1";
doCheck = canRunInstalled;
mesonCheckFlags = lib.optionals (buildWithMeson || forDevShell) [ "--suite=check" ];
installFlags = "sysconfdir=$(out)/etc";
# Make sure the internal API docs are already built, because mesonInstallPhase
# won't let us build them there. They would normally be built in buildPhase,
# but the internal API docs are conventionally built with doBuild = false.
preInstall = lib.optional (buildWithMeson && internalApiDocs) ''
meson ''${mesonBuildFlags:-} compile "$installTargets"
'';
postInstall =
lib.optionalString (!finalAttrs.dontBuild) ''
mkdir -p $doc/nix-support
echo "doc manual $doc/share/doc/nix/manual" >> $doc/nix-support/hydra-build-products
''
+ lib.optionalString stdenv.hostPlatform.isStatic ''
mkdir -p $out/nix-support
echo "file binary-dist $out/bin/nix" >> $out/nix-support/hydra-build-products
''
+ lib.optionalString stdenv.isDarwin ''
for lib in libnixutil.dylib libnixexpr.dylib; do
install_name_tool \
-change "${lib.getLib boost}/lib/libboost_context.dylib" \
"$out/lib/libboost_context.dylib" \
"$out/lib/$lib"
done
''
+ lib.optionalString internalApiDocs ''
mkdir -p $out/nix-support
echo "doc internal-api-docs $out/share/doc/nix/internal-api/html" >> "$out/nix-support/hydra-build-products"
'';
doInstallCheck = finalAttrs.doCheck;
installCheckFlags = "sysconfdir=$(out)/etc";
installCheckTarget = "installcheck"; # work around buggy detection in stdenv
mesonInstallCheckFlags = [ "--suite=installcheck" ];
preInstallCheck = lib.optionalString stdenv.hostPlatform.isDarwin ''
export OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES
'';
installCheckPhase = lib.optionalString buildWithMeson ''
runHook preInstallCheck
flagsArray=($mesonInstallCheckFlags "''${mesonInstallCheckFlagsArray[@]}")
meson test --no-rebuild "''${flagsArray[@]}"
runHook postInstallCheck
'';
separateDebugInfo = !stdenv.hostPlatform.isStatic && !finalAttrs.dontBuild;
strictDeps = true;
# strictoverflow is disabled because we trap on signed overflow instead
hardeningDisable = [ "strictoverflow" ] ++ lib.optional stdenv.hostPlatform.isStatic "pie";
meta.platforms = lib.platforms.unix;
passthru.perl-bindings = pkgs.callPackage ./perl { inherit fileset stdenv buildWithMeson; };
# Export the patched version of boehmgc.
# flake.nix exports that into its overlay.
passthru.boehmgc-nix = __forDefaults.boehmgc-nix;
})