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build: optionally build and install with meson

Browse source 
This commit adds several meson.build, which successfully build and
install Lix executables, libraries, and headers. Meson does not yet
build docs, Perl bindings, or run tests, which will be added in
following commits. As such, this commit does not remove the existing
build system, or make it the default, and also as such, this commit has
several FIXMEs and TODOs as notes for what should be done before the
existing autoconf + make buildsystem can be removed and Meson made the
default. This commit does not modify any source files.

A Meson-enabled build is also added as a Hydra job, and to
`nix flake check`.

Change-Id: I667c8685b13b7bab91e281053f807a11616ae3d4
This commit is contained in:
Qyriad 2024-03-18 19:32:37 -06:00
parent f38ae92a38
commit 9697754418
13 changed files with 1186 additions and 6 deletions
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14
flake.nix
View file

@ -204,6 +204,11 @@
# Binary package for various platforms.
build = forAllSystems (system: self.packages.${system}.nix);
# FIXME(Qyriad): remove this when the migration to Meson has been completed.
mesonBuild = forAllSystems (system: self.packages.${system}.nix.override {
buildWithMeson = true;
});
# Perl bindings for various platforms.
perlBindings = forAllSystems (system: nixpkgsFor.${system}.native.nix.perl-bindings);
@ -262,6 +267,8 @@
};
checks = forAllSystems (system: {
# FIXME(Qyriad): remove this when the migration to Meson has been completed.
mesonBuild = self.hydraJobs.mesonBuild.${system};
binaryTarball = self.hydraJobs.binaryTarball.${system};
perlBindings = self.hydraJobs.perlBindings.${system};
nixpkgsLibTests = self.hydraJobs.tests.nixpkgsLibTests.${system};
@ -321,7 +328,12 @@
++ lib.optional (stdenv.cc.isClang && !stdenv.buildPlatform.isDarwin) pkgs.buildPackages.bear
++ lib.optional
(stdenv.cc.isClang && stdenv.hostPlatform == stdenv.buildPlatform)
pkgs.buildPackages.clang-tools;
pkgs.buildPackages.clang-tools
++ [
# FIXME(Qyriad): remove once the migration to Meson is complete.
pkgs.buildPackages.meson
pkgs.buildPackages.ninja
];
src = null;

294
meson.build Normal file
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@ -0,0 +1,294 @@
#
# OUTLINE:
#
# The top-level meson.build file (this file) handles general logic for build options,
# generation of config.h (which is put in the build directory, not the source root
# like the previous, autoconf-based build system did), the mechanism for header
# generation, and the few global C++ compiler arguments that are added to all targets in Lix.
#
# src/meson.build coordinates each of Lix's subcomponents (the lib dirs in ./src),
# which each have their own meson.build. Lix's components depend on each other,
# so each of `src/lib{util,store,fetchers,expr,main,cmd}/meson.build` rely on variables
# set in earlier `meson.build` files. Each of these also defines the install targets for
# their headers.
#
# src/meson.build also collects the miscellaneous source files that are in further subdirectories
# that become part of the final Nix command (things like `src/nix-build/*.cc`).
#
# Finally, src/nix/meson.build defines the Nix command itself, relying on all prior meson files.
project('lix', 'cpp',
version : run_command('bash', '-c', 'echo -n $(cat ./.version)$VERSION_SUFFIX', check : true).stdout().strip(),
default_options : [
'cpp_std=c++20',
# TODO(Qyriad): increase the warning level
'warning_level=1',
'debug=true',
'optimization=2',
],
)
fs = import('fs')
prefix = get_option('prefix')
# For each of these paths, assume that it is relative to the prefix unless
# it is already an absolute path (which is the default for store-dir, state-dir, and log-dir).
path_opts = [
# Meson built-ins.
'datadir',
'sysconfdir',
'bindir',
'mandir',
'libdir',
'includedir',
# Homecooked Lix directories.
'store-dir',
'state-dir',
'log-dir',
]
foreach optname : path_opts
varname = optname.replace('-', '_')
path = get_option(optname)
if fs.is_absolute(path)
set_variable(varname, path)
else
set_variable(varname, prefix / path)
endif
endforeach
cxx = meson.get_compiler('cpp')
host_system = host_machine.cpu_family() + '-' + host_machine.system()
message('canonical Nix system name:', host_system)
deps = [ ]
configdata = { }
#
# Dependencies
#
boehm = dependency('bdw-gc', required : get_option('gc'))
if boehm.found()
deps += boehm
endif
configdata += {
'HAVE_BOEHMGC': boehm.found().to_int(),
}
boost = dependency('boost', required : true, modules : ['context', 'coroutine', 'container'])
deps += boost
cpuid = dependency('libcpuid', 'cpuid', required : get_option('cpuid'))
configdata += {
'HAVE_LIBCPUID': cpuid.found().to_int(),
}
deps += cpuid
seccomp = dependency('libseccomp', 'seccomp', required : get_option('seccomp-sandboxing'))
configdata += {
'HAVE_SECCOMP': seccomp.found().to_int(),
}
libarchive = dependency('libarchive', required : true)
deps += libarchive
brotli = [
dependency('libbrotlicommon', required : true),
dependency('libbrotlidec', required : true),
dependency('libbrotlienc', required : true),
]
deps += brotli
openssl = dependency('libcrypto', 'openssl', required : true)
deps += openssl
aws_sdk = dependency('aws-cpp-sdk-core', required : true)
if aws_sdk.found()
# The AWS pkg-config adds -std=c++11.
aws_sdk = aws_sdk.partial_dependency(
compile_args : false,
includes : true,
link_args : true,
links : true,
sources : true,
)
deps += aws_sdk
s = aws_sdk.version().split('.')
configdata += {
'AWS_VERSION_MAJOR': s[0].to_int(),
'AWS_VERSION_MINOR': s[1].to_int(),
'AWS_VERSION_PATCH': s[2].to_int(),
}
aws_sdk_transfer = dependency('aws-cpp-sdk-transfer', required : true).partial_dependency(
compile_args : false,
includes : true,
link_args : true,
links : true,
sources : true,
)
endif
aws_s3 = dependency('aws-cpp-sdk-s3', required : true)
if aws_s3.found()
# The AWS pkg-config adds -std=c++11.
aws_s3 = aws_s3.partial_dependency(
compile_args : false,
includes : true,
link_args : true,
links : true,
sources : true,
)
deps += aws_s3
endif
configdata += {
'ENABLE_S3': aws_s3.found().to_int(),
}
sqlite = dependency('sqlite3', 'sqlite', version : '>=3.6.19', required : true)
deps += sqlite
sodium = dependency('libsodium', 'sodium', required : true)
deps += sodium
curl = dependency('libcurl', 'curl', required : true)
deps += curl
editline = dependency('libeditline', 'editline', version : '>=1.14', required : true)
deps += editline
lowdown = dependency('lowdown', version : '>=0.9.0', required : true)
deps += lowdown
rapidcheck = dependency('rapidcheck', required : false)
deps += rapidcheck
gtest = dependency('gtest', required : false)
deps += gtest
#
# Build-time tools
#
bash = find_program('bash')
# Used to workaround https://github.com/mesonbuild/meson/issues/2320 in src/nix/meson.build.
installcmd = find_program('install')
sandbox_shell = get_option('sandbox-shell')
# Consider it required if we're on Linux and the user explicitly specified a non-default value.
sandbox_shell_required = sandbox_shell != 'busybox' and host_machine.system() == 'linux'
# NOTE(Qyriad): package.nix puts busybox in buildInputs for Linux.
# Most builds should not require setting this.
busybox = find_program(sandbox_shell, required : sandbox_shell_required, native : false)
if not busybox.found() and host_machine.system() == 'linux' and sandbox_shell_required
warning('busybox not found and other sandbox shell was specified')
warning('a sandbox shell is recommended on Linux -- configure with -Dsandbox-shell=/path/to/shell to set')
endif
# FIXME(Qyriad): the autoconf system checks that busybox has the "standalone" feature, indicating
# that busybox sh won't run busybox applets as builtins (which would break our sandbox).
lsof = find_program('lsof')
bison = find_program('bison')
flex = find_program('flex')
# This is how Nix does generated headers...
# FIXME(Qyriad): do we really need to use the shell for this?
gen_header = generator(
bash,
arguments : [
'-c',
'echo \'R"__NIX_STR(\' | cat - @INPUT@ && echo \')__NIX_STR"\'',
],
capture : true,
output : '@PLAINNAME@.gen.hh',
)
#
# Configuration
#
run_command('ln', '-s',
meson.project_build_root() / '__nothing_link_target',
meson.project_build_root() / '__nothing_symlink',
check : true,
)
can_link_symlink = run_command('ln',
meson.project_build_root() / '__nothing_symlink',
meson.project_build_root() / '__nothing_hardlink',
check : false,
).returncode() == 0
run_command('rm', '-f',
meson.project_build_root() / '__nothing_symlink',
meson.project_build_root() / '__nothing_hardlink',
check : true,
)
summary('can hardlink to symlink', can_link_symlink, bool_yn : true)
configdata += { 'CAN_LINK_SYMLINK': can_link_symlink.to_int() }
# Check for each of these functions, and create a define like `#define HAVE_LCHOWN 1`.
check_funcs = [
'lchown',
'lutimes',
'pipe2',
'posix_fallocate',
'statvfs',
'strsignal',
'sysconf',
]
foreach funcspec : check_funcs
define_name = 'HAVE_' + funcspec.underscorify().to_upper()
define_value = cxx.has_function(funcspec).to_int()
configdata += {
define_name: define_value,
}
endforeach
# extern "C++" functions can't be checked with the normal mechanism (much less member functions),
# so we have to do this one ourselves.
has_pubsetbuf = cxx.compiles('''
#include <iostream>
using namespace std;
static char buf[1024];
decltype(cerr.rdbuf()->pubsetbuf(buf, sizeof(buf))) _;
''')
summary('have std::basic_streambuf::pubsetbuf', has_pubsetbuf, bool_yn : true)
configdata += {
'HAVE_PUBSETBUF': has_pubsetbuf.to_int(),
}
config_h = configure_file(
configuration : {
'PACKAGE_NAME': '"' + meson.project_name() + '"',
'PACKAGE_VERSION': '"' + meson.project_version() + '"',
'PACKAGE_TARNAME': '"' + meson.project_name() + '"',
'PACKAGE_STRING': '"' + meson.project_name() + ' ' + meson.project_version() + '"',
'HAVE_STRUCT_DIRENT_D_TYPE': 1, # FIXME: actually check this for solaris
'SYSTEM': '"' + host_system + '"',
} + configdata,
output : 'config.h',
)
install_headers(config_h, subdir : 'nix')
add_project_arguments(
# TODO(Qyriad): Yes this is how the autoconf+Make system did it.
# It would be nice for our headers to be idempotent instead.
'-include', 'config.h',
'-Wno-deprecated-declarations',
'-Wimplicit-fallthrough',
'-Werror=switch',
'-Werror=switch-enum',
language : 'cpp',
)
add_project_link_arguments(
'-pthread',
# FIXME(Qyriad): autoconf did this only if not Darwin, Solaris, or FreeBSD
# (...so only if Linux?)
'-Wl,--no-copy-dt-needed-entries',
language : 'cpp',
)
subdir('src')

32
meson.options Normal file
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@ -0,0 +1,32 @@
# vim: filetype=meson
option('gc', type : 'feature',
description : 'enable garbage collection in the Nix expression evaluator (requires Boehm GC)',
)
# TODO(Qyriad): is this feature maintained?
option('embedded-sandbox-shell', type : 'feature',
description : 'include the sandbox shell in the Nix bindary',
)
option('cpuid', type : 'feature',
description : 'determine microarchitecture levels with libcpuid (only relevant on x86_64)',
)
option('seccomp-sandboxing', type : 'feature',
description : 'build support for seccomp sandboxing (recommended unless your arch doesn\'t support libseccomp, only relevant on Linux)',
)
option('sandbox-shell', type : 'string', value : 'busybox',
description : 'path to a statically-linked shell to use as /bin/sh in sandboxes (usually busybox)',
)
option('store-dir', type : 'string', value : '/nix/store',
description : 'path of the Nix store',
)
option('state-dir', type : 'string', value : '/nix/var/nix',
description : 'path to store state in for Nix',
)
option('log-dir', type : 'string', value : '/nix/var/log',
description : 'path to store logs in for Nix',
)

41
meson/cleanup-install.bash Executable file
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@ -0,0 +1,41 @@
#!/usr/bin/env bash
# Meson will call this with an absolute path to Bash.
# The shebang is just for convenience.
set -euo pipefail
echo "cleanup-install: removing Meson-placed C++ sources from dest includedir"
if [[ "${1/--help/}" != "$1" ]]; then
echo "cleanup-install: this script should only be called from the Meson build system"
exit 1
fi
# Ensure the includedir was passed as the first argument
# (set -u will make this fail otherwise).
includedir="$1"
# And then ensure that first argument is a directory that exists.
if ! [[ -d "$1" ]]; then
echo "cleanup-install: this script should only be called from the Meson build system"
echo "argv[1] (${1@Q}) is not a directory"
exit 2
fi
# If DESTDIR environment variable is set, prepend it to the include dir.
# Unfortunately, we cannot do this on the Meson side. We do have an environment variable
# `MESON_INSTALL_DESTDIR_PREFIX`, but that will not refer to the include directory if
# includedir has been set separately, which Lix's split-output derivation does.
# We also cannot simply do an inline bash conditional like "${DESTDIR:=}" or similar,
# because we need to specifically *join* DESTDIR and includedir with a slash, and *not*
# have a slash if DESTDIR isn't set at all, since $includedir could be a relative directory.
# Finally, DESTDIR is only available to us as an environment variable in these install scripts,
# not in Meson logic.
# Therefore, our best option is to have Meson pass this script the configured includedir,
# and perform this dance with it and $DESTDIR.
if [[ -n "${DESTDIR:-}" ]]; then
includedir="$DESTDIR/$includedir"
fi
# Intentionally not using -f.
# If these files don't exist then our assumptions have been violated and we should fail.
rm -v "$includedir/nix/parser-tab.cc" "$includedir/nix/lexer-tab.cc"

37
package.nix
View file

@ -24,10 +24,13 @@
libcpuid,
libseccomp,
libsodium,
lsof,
lowdown,
mdbook,
mdbook-linkcheck,
mercurial,
meson,
ninja,
openssl,
pkg-config,
rapidcheck,
@ -47,6 +50,10 @@
# 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 ? false,
# Not a real argument, just the only way to approximate let-binding some
# stuff for argument defaults.
__forDefaults ? {
@ -86,12 +93,16 @@
./README.md
];
topLevelBuildFiles = fileset.unions [
topLevelBuildFiles = fileset.unions ([
./local.mk
./Makefile
./Makefile.config.in
./mk
];
] ++ lib.optionals buildWithMeson [
./meson.build
./meson.options
./meson/cleanup-install.bash
]);
functionalTestFiles = fileset.unions [
./tests/functional
@ -126,6 +137,11 @@ in stdenv.mkDerivation (finalAttrs: {
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=${lib.getBin busybox-sandbox-shell}/bin/busybox"
];
nativeBuildInputs = [
bison
flex
@ -134,17 +150,21 @@ in stdenv.mkDerivation (finalAttrs: {
mdbook
mdbook-linkcheck
autoconf-archive
autoreconfHook
] ++ lib.optional (!buildWithMeson) autoreconfHook ++ [
pkg-config
# Tests
git
mercurial
jq
lsof
] ++ lib.optional stdenv.hostPlatform.isLinux util-linuxMinimal
++ lib.optional (!officialRelease && buildUnreleasedNotes) changelog-d
++ lib.optional internalApiDocs doxygen
;
++ lib.optionals buildWithMeson [
meson
ninja
];
buildInputs = [
curl
@ -159,7 +179,7 @@ in stdenv.mkDerivation (finalAttrs: {
lowdown
libsodium
]
++ lib.optionals stdenv.isLinux [ libseccomp ]
++ lib.optionals stdenv.hostPlatform.isLinux [ libseccomp busybox-sandbox-shell ]
++ lib.optional stdenv.hostPlatform.isx86_64 libcpuid
# There have been issues building these dependencies
++ lib.optional (stdenv.hostPlatform == stdenv.buildPlatform) aws-sdk-cpp-nix
@ -177,6 +197,13 @@ in stdenv.mkDerivation (finalAttrs: {
boost
];
# Needed for Meson to find Boost.
# https://github.com/NixOS/nixpkgs/issues/86131.
env = lib.optionalAttrs (buildWithMeson || forDevShell) {
BOOST_INCLUDEDIR = "${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

58
src/libcmd/meson.build Normal file
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@ -0,0 +1,58 @@
libcmd_sources = files(
'built-path.cc',
'command-installable-value.cc',
'command.cc',
'common-eval-args.cc',
'editor-for.cc',
'installable-attr-path.cc',
'installable-derived-path.cc',
'installable-flake.cc',
'installable-value.cc',
'installables.cc',
'legacy.cc',
'markdown.cc',
'repl.cc',
'repl-interacter.cc',
)
libcmd_headers = files(
'built-path.hh',
'command-installable-value.hh',
'command.hh',
'common-eval-args.hh',
'editor-for.hh',
'installable-attr-path.hh',
'installable-derived-path.hh',
'installable-flake.hh',
'installable-value.hh',
'installables.hh',
'legacy.hh',
'markdown.hh',
'repl-interacter.hh',
'repl.hh',
)
libcmd = library(
'nixcmd',
libcmd_sources,
dependencies : [
liblixutil,
liblixstore,
liblixexpr,
liblixfetchers,
liblixmain,
boehm,
editline,
lowdown,
],
install : true,
# FIXME(Qyriad): is this right?
install_rpath : libdir,
)
install_headers(libcmd_headers, subdir : 'nix', preserve_path : true)
liblixcmd = declare_dependency(
include_directories : '.',
link_with : libcmd,
)

157
src/libexpr/meson.build Normal file
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@ -0,0 +1,157 @@
parser_tab = custom_target(
input : 'parser.y',
output : [
'parser-tab.cc',
'parser-tab.hh',
],
command : [
'bison',
'-v',
'-o',
'@OUTPUT0@',
'@INPUT@',
'-d',
],
# NOTE(Qyriad): Meson doesn't support installing only part of a custom target, so we add
# an install script below which removes parser-tab.cc.
install : true,
install_dir : includedir / 'nix',
)
lexer_tab = custom_target(
input : [
'lexer.l',
parser_tab,
],
output : [
'lexer-tab.cc',
'lexer-tab.hh',
],
command : [
'flex',
'--outfile',
'@OUTPUT0@',
'--header-file=' + '@OUTPUT1@',
'@INPUT0@',
],
# NOTE(Qyriad): Meson doesn't support installing only part of a custom target, so we add
# an install script below which removes lexer-tab.cc.
install : true,
install_dir : includedir / 'nix',
)
# TODO(Qyriad): When the parser and lexer are rewritten this should be removed.
# NOTE(Qyriad): We do this this way instead of an inline bash or rm command
# due to subtleties in Meson. Check the comments in cleanup-install.bash for details.
meson.add_install_script(
bash,
meson.project_source_root() / 'meson/cleanup-install.bash',
'@0@'.format(includedir),
)
imported_drv_to_derivation_gen = gen_header.process('imported-drv-to-derivation.nix')
fetchurl_gen = gen_header.process('fetchurl.nix')
derivation_gen = gen_header.process('primops/derivation.nix', preserve_path_from : meson.current_source_dir())
call_flake_gen = gen_header.process('flake/call-flake.nix')
libexpr_sources = files(
'attr-path.cc',
'attr-set.cc',
'eval-cache.cc',
'eval-error.cc',
'eval-settings.cc',
'eval.cc',
'function-trace.cc',
'get-drvs.cc',
'json-to-value.cc',
'nixexpr.cc',
'paths.cc',
'primops.cc',
'print-ambiguous.cc',
'print.cc',
'search-path.cc',
'value-to-json.cc',
'value-to-xml.cc',
'flake/config.cc',
'flake/flake.cc',
'flake/flakeref.cc',
'flake/lockfile.cc',
'primops/context.cc',
'primops/fetchClosure.cc',
'primops/fetchMercurial.cc',
'primops/fetchTree.cc',
'primops/fromTOML.cc',
'value/context.cc',
)
libexpr_headers = files(
'attr-path.hh',
'attr-set.hh',
'eval-cache.hh',
'eval-error.hh',
'eval-inline.hh',
'eval-settings.hh',
'eval.hh',
'flake/flake.hh',
'flake/flakeref.hh',
'flake/lockfile.hh',
'function-trace.hh',
'gc-small-vector.hh',
'get-drvs.hh',
'json-to-value.hh',
'nixexpr.hh',
'parser-state.hh',
'pos-idx.hh',
'pos-table.hh',
'primops.hh',
'print-ambiguous.hh',
'print-options.hh',
'print.hh',
'repl-exit-status.hh',
'search-path.hh',
'symbol-table.hh',
'value/context.hh',
'value-to-json.hh',
'value-to-xml.hh',
'value.hh',
)
libexpr = library(
'nixexpr',
libexpr_sources,
parser_tab,
lexer_tab,
imported_drv_to_derivation_gen,
fetchurl_gen,
derivation_gen,
call_flake_gen,
dependencies : [
liblixutil,
liblixstore,
liblixfetchers,
boehm,
boost,
],
# for shared.hh
include_directories : '../libmain',
cpp_args : [
# FIXME(Qyriad): can we please fix this. toml11 pls.
# Technically this only applies to fromTOML.cc, but, well
# https://github.com/mesonbuild/meson/issues/1367
'-Wno-error=switch-enum',
],
install : true,
# FIXME(Qyriad): is this right?
install_rpath : libdir,
)
install_headers(
libexpr_headers,
subdir : 'nix',
preserve_path : true
)
liblixexpr = declare_dependency(
include_directories : include_directories('.'),
link_with : libexpr,
)

42
src/libfetchers/meson.build Normal file
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@ -0,0 +1,42 @@
libfetchers_sources = files(
'attrs.cc',
'cache.cc',
'fetch-settings.cc',
'fetch-to-store.cc',
'fetchers.cc',
'git.cc',
'github.cc',
'indirect.cc',
'mercurial.cc',
'path.cc',
'registry.cc',
'tarball.cc',
)
libfetchers_headers = files(
'attrs.hh',
'cache.hh',
'fetch-settings.hh',
'fetch-to-store.hh',
'fetchers.hh',
'registry.hh',
)
libfetchers = library(
'nixfetchers',
libfetchers_sources,
dependencies : [
liblixstore,
liblixutil,
],
install : true,
# FIXME(Qyriad): is this right?
install_rpath : libdir,
)
install_headers(libfetchers_headers, subdir : 'nix', preserve_path : true)
liblixfetchers = declare_dependency(
include_directories : include_directories('.'),
link_with : libfetchers,
)

33
src/libmain/meson.build Normal file
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@ -0,0 +1,33 @@
libmain_sources = files(
'common-args.cc',
'loggers.cc',
'progress-bar.cc',
'shared.cc',
'stack.cc',
)
libmain_headers = files(
'common-args.hh',
'loggers.hh',
'progress-bar.hh',
'shared.hh',
)
libmain = library(
'nixmain',
libmain_sources,
dependencies : [
liblixutil,
liblixstore,
],
install : true,
# FIXME(Qyriad): is this right?
install_rpath : libdir,
)
install_headers(libmain_headers, subdir : 'nix', preserve_path : true)
liblixmain = declare_dependency(
include_directories : include_directories('.'),
link_with : libmain,
)

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schema_sql_gen = gen_header.process('schema.sql')
ca_specific_schema_gen = gen_header.process('ca-specific-schema.sql')
libstore_sources = files(
'binary-cache-store.cc',
'build-result.cc',
'common-protocol.cc',
'content-address.cc',
'crypto.cc',
'daemon.cc',
'derivations.cc',
'derived-path-map.cc',
'derived-path.cc',
'downstream-placeholder.cc',
'dummy-store.cc',
'export-import.cc',
'filetransfer.cc',
'gc.cc',
'globals.cc',
'http-binary-cache-store.cc',
'legacy-ssh-store.cc',
'local-binary-cache-store.cc',
'local-fs-store.cc',
'local-store.cc',
'lock.cc',
'log-store.cc',
'machines.cc',
'make-content-addressed.cc',
'misc.cc',
'names.cc',
'nar-accessor.cc',
'nar-info-disk-cache.cc',
'nar-info.cc',
'optimise-store.cc',
'outputs-spec.cc',
'parsed-derivations.cc',
'path-info.cc',
'path-references.cc',
'path-with-outputs.cc',
'path.cc',
'pathlocks.cc',
'profiles.cc',
'realisation.cc',
'remote-fs-accessor.cc',
'remote-store.cc',
's3-binary-cache-store.cc',
'serve-protocol.cc',
'sqlite.cc',
'ssh-store.cc',
'ssh.cc',
'store-api.cc',
'uds-remote-store.cc',
'worker-protocol.cc',
'build/derivation-goal.cc',
'build/drv-output-substitution-goal.cc',
'build/entry-points.cc',
'build/goal.cc',
'build/hook-instance.cc',
'build/local-derivation-goal.cc',
'build/personality.cc',
'build/substitution-goal.cc',
'build/worker.cc',
'builtins/buildenv.cc',
'builtins/fetchurl.cc',
'builtins/unpack-channel.cc',
)
libstore_headers = files(
'binary-cache-store.hh',
'build/derivation-goal.hh',
'build/drv-output-substitution-goal.hh',
'build/goal.hh',
'build/hook-instance.hh',
'build/local-derivation-goal.hh',
'build/personality.hh',
'build/substitution-goal.hh',
'build/worker.hh',
'build-result.hh',
'builtins/buildenv.hh',
'builtins.hh',
'common-protocol-impl.hh',
'common-protocol.hh',
'content-address.hh',
'crypto.hh',
'daemon.hh',
'derivations.hh',
'derived-path-map.hh',
'derived-path.hh',
'downstream-placeholder.hh',
'filetransfer.hh',
'fs-accessor.hh',
'gc-store.hh',
'globals.hh',
'indirect-root-store.hh',
'length-prefixed-protocol-helper.hh',
'local-fs-store.hh',
'local-store.hh',
'lock.hh',
'log-store.hh',
'machines.hh',
'make-content-addressed.hh',
'names.hh',
'nar-accessor.hh',
'nar-info-disk-cache.hh',
'nar-info.hh',
'outputs-spec.hh',
'parsed-derivations.hh',
'path-info.hh',
'path-references.hh',
'path-regex.hh',
'path-with-outputs.hh',
'path.hh',
'pathlocks.hh',
'profiles.hh',
'realisation.hh',
'remote-fs-accessor.hh',
'remote-store-connection.hh',
'remote-store.hh',
's3-binary-cache-store.hh',
's3.hh',
'serve-protocol-impl.hh',
'serve-protocol.hh',
'sqlite.hh',
'ssh-store-config.hh',
'ssh.hh',
'store-api.hh',
'store-cast.hh',
'uds-remote-store.hh',
'worker-protocol-impl.hh',
'worker-protocol.hh',
)
# These variables (aside from LSOF) are created pseudo-dynamically, near the beginning of
# the top-level meson.build. Aside from prefix itself, each of these was
# made into an absolute path by joining it with prefix, unless it was already
# an absolute path (which is the default for store-dir, state-dir, and log-dir).
cpp_str_defines = {
'LSOF': lsof.full_path(),
'NIX_PREFIX': prefix,
'NIX_STORE_DIR': store_dir,
'NIX_DATA_DIR': datadir,
'NIX_STATE_DIR': state_dir,
'NIX_LOG_DIR': log_dir,
'NIX_CONF_DIR': sysconfdir,
'NIX_BIN_DIR': bindir,
'NIX_MAN_DIR': mandir,
}
cpp_args = []
foreach name, value : cpp_str_defines
cpp_args += [
'-D' + name + '=' + '"' + value + '"'
]
endforeach
libstore = library(
'nixstore',
schema_sql_gen,
ca_specific_schema_gen,
libstore_sources,
dependencies : [
libarchive,
liblixutil, # Internal.
seccomp,
sqlite,
sodium,
seccomp,
curl,
openssl,
aws_sdk,
aws_s3,
aws_sdk_transfer,
],
cpp_args : cpp_args,
install : true,
# FIXME(Qyriad): is this right?
install_rpath : libdir,
)
install_headers(libstore_headers, subdir : 'nix', preserve_path : true)
# Used by libfetchers.
liblixstore = declare_dependency(
include_directories : include_directories('.'),
link_with : libstore,
)

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libutil_sources = files(
'archive.cc',
'args.cc',
'canon-path.cc',
'cgroup.cc',
'compression.cc',
'compute-levels.cc',
'config.cc',
'english.cc',
'error.cc',
'exit.cc',
'experimental-features.cc',
'filesystem.cc',
'git.cc',
'hash.cc',
'hilite.cc',
'json-utils.cc',
'logging.cc',
'namespaces.cc',
'position.cc',
'references.cc',
'serialise.cc',
'signals.cc',
'source-path.cc',
'suggestions.cc',
'tarfile.cc',
'thread-pool.cc',
'url.cc',
'util.cc',
'xml-writer.cc',
)
libutil_headers = files(
'abstract-setting-to-json.hh',
'ansicolor.hh',
'archive.hh',
'args.hh',
'box_ptr.hh',
'callback.hh',
'canon-path.hh',
'cgroup.hh',
'chunked-vector.hh',
'closure.hh',
'comparator.hh',
'compression.hh',
'compute-levels.hh',
'config-impl.hh',
'config.hh',
'english.hh',
'error.hh',
'exit.hh',
'experimental-features.hh',
'finally.hh',
'fmt.hh',
'git.hh',
'hash.hh',
'hilite.hh',
'input-accessor.hh',
'json-impls.hh',
'json-utils.hh',
'logging.hh',
'lru-cache.hh',
'monitor-fd.hh',
'namespaces.hh',
'pool.hh',
'position.hh',
'ref.hh',
'references.hh',
'regex-combinators.hh',
'repair-flag.hh',
'serialise.hh',
'signals.hh',
'source-path.hh',
'split.hh',
'suggestions.hh',
'sync.hh',
'tarfile.hh',
'thread-pool.hh',
'topo-sort.hh',
'types.hh',
'url-parts.hh',
'url.hh',
'util.hh',
'variant-wrapper.hh',
'xml-writer.hh',
)
libutil = library(
'nixutil',
libutil_sources,
dependencies : [
aws_sdk,
aws_s3,
boehm,
boost,
cpuid,
seccomp,
libarchive,
brotli,
openssl,
],
implicit_include_directories : true,
install : true,
)
install_headers(libutil_headers, subdir : 'nix', preserve_path : true)
# Used by libstore and libfetchers.
liblixutil = declare_dependency(
include_directories : include_directories('.'),
link_with : libutil
)

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# Subcomponents: these link into artifacts themselves, and have interdependencies.
subdir('libutil')
# Load-bearing order. libstore depends on libutil.
subdir('libstore')
# libfetchers depends on libstore
subdir('libfetchers')
# libexpr depends on all of the above
subdir('libexpr')
# libmain depends on libutil and libstore
subdir('libmain')
# libcmd depends on everything
subdir('libcmd')
# The rest of the subdirectories aren't separate components,
# just source files in another directory, so we process them here.
build_remote_sources = files(
'build-remote/build-remote.cc',
)
nix_build_sources = files(
'nix-build/nix-build.cc',
)
nix_channel_sources = files(
'nix-channel/nix-channel.cc',
)
unpack_channel_gen = gen_header.process('nix-channel/unpack-channel.nix')
nix_collect_garbage_sources = files(
'nix-collect-garbage/nix-collect-garbage.cc',
)
nix_copy_closure_sources = files(
'nix-copy-closure/nix-copy-closure.cc',
)
nix_env_buildenv_gen = gen_header.process('nix-env/buildenv.nix')
nix_env_sources = files(
'nix-env/nix-env.cc',
'nix-env/user-env.cc',
)
nix_instantiate_sources = files(
'nix-instantiate/nix-instantiate.cc',
)
nix_store_sources = files(
'nix-store/dotgraph.cc',
'nix-store/graphml.cc',
'nix-store/nix-store.cc',
)
# Hurray for Meson list flattening!
nix2_commands_sources = [
build_remote_sources,
nix_build_sources,
nix_channel_sources,
unpack_channel_gen,
nix_collect_garbage_sources,
nix_copy_closure_sources,
nix_env_buildenv_gen,
nix_env_sources,
nix_instantiate_sources,
nix_store_sources,
]
# Finally, the nix command itself, which all of the other commands are implmented in terms of
# as a multicall binary.
subdir('nix')

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generate_manpage_gen = gen_header.process(meson.project_source_root() / 'doc/manual/generate-manpage.nix')
utils_gen = gen_header.process(meson.project_source_root() / 'doc/manual/utils.nix')
get_env_gen = gen_header.process('get-env.sh')
# src/nix/profile.cc includes src/nix/profile.md, which includes "doc/files/profiles.md.gen.hh".
# Unfortunately, https://github.com/mesonbuild/meson/issues/2320.
# "docs/files" isn't a directory hierarchy that already exists somewhere in this source tree,
# and Meson refuses to create targets with specific directory paths.
# So run_command() it is.
# NOTE(Qyriad): This corresponds to the previous buildsystem's `src/nix/doc/files/%.md` rule,
# which as far as I can tell was only used for this file.
run_command(
installcmd,
'-D',
meson.project_source_root() / 'doc/manual/src/command-ref/files/profiles.md',
meson.current_build_dir() / 'doc/files/profiles.md',
check : true,
)
profiles_md_gen = gen_header.process(
meson.current_build_dir() / 'doc/files/profiles.md',
preserve_path_from : meson.current_build_dir(),
)
nix_sources = files(
'add-to-store.cc',
'app.cc',
'build.cc',
'bundle.cc',
'cat.cc',
'copy.cc',
'daemon.cc',
'derivation-add.cc',
'derivation-show.cc',
'derivation.cc',
'develop.cc',
'diff-closures.cc',
'doctor.cc',
'dump-path.cc',
'edit.cc',
'eval.cc',
'flake.cc',
'fmt.cc',
'hash.cc',
'log.cc',
'ls.cc',
'main.cc',
'make-content-addressed.cc',
'nar.cc',
'optimise-store.cc',
'path-from-hash-part.cc',
'path-info.cc',
'ping-store.cc',
'prefetch.cc',
'profile.cc',
'realisation.cc',
'registry.cc',
'repl.cc',
'run.cc',
'search.cc',
'show-config.cc',
'sigs.cc',
'store-copy-log.cc',
'store-delete.cc',
'store-gc.cc',
'store-repair.cc',
'store.cc',
'upgrade-nix.cc',
'verify.cc',
'why-depends.cc',
)
nix = executable(
'nix',
nix_sources,
generate_manpage_gen,
utils_gen,
get_env_gen,
profiles_md_gen,
nix2_commands_sources,
dependencies : [
liblixcmd,
liblixutil,
liblixstore,
liblixexpr,
liblixfetchers,
liblixmain,
boehm,
],
install : true,
# FIXME(Qyriad): is this right?
install_rpath : libdir,
)
nix_symlinks = [
'nix-build',
'nix-channel',
'nix-collect-garbage',
'nix-copy-closure',
'nix-daemon',
'nix-env',
'nix-hash',
'nix-instantiate',
'nix-prefetch-url',
'nix-shell',
'nix-store',
]
foreach linkname : nix_symlinks
install_symlink(
linkname,
# TODO(Qyriad): should these continue to be relative symlinks?
pointing_to : 'nix',
install_dir : bindir,
# The 'runtime' tag is what executables default to, which we want to emulate here.
install_tag : 'runtime'
)
endforeach