scx/scheds/rust/scx_layered/meson.build

if serialize
  sched_deps = [libbpf, bpftool_target, sched]
else
  sched_deps = [libbpf, bpftool_target]
endif

sched = custom_target('scx_layered',
              output: '@PLAINNAME@.__PHONY__',
              input: 'Cargo.toml',
              command: [cargo, 'build', '--manifest-path=@INPUT@', '--target-dir=@OUTDIR@',
                        cargo_build_args],
              env: cargo_env,
              depends: sched_deps,
              build_always_stale: true)
meson: introduce serialize build option With commit 5d20f89a ("scheds-rust: build rust schedulers in sequence"), schedulers are now built serially one after the other to prevent meson and cargo from forking NxN parallel tasks. However, this change has made building a single scheduler much more cumbersome, due to the chain of dependencies. For example, building scx_rusty using the specific meson target would still result in all schedulers being built, because they all depend on each other. To address this issue, introduce the new meson build option `serialize=true\|false` (default is false). This option allows to disable the schedulers' build chain, restoring the old behavior. With this option enabled, it is now possible to build just a single scheduler, parallelizing the cargo build properly, without triggering the build of the others. Example: $ meson setup build -Dbuildtype=release -Dserialize=false $ meson compile -C build scx_rusty Signed-off-by: Andrea Righi <andrea.righi@canonical.com> 2024-06-28 08:42:04 +01:00			`if serialize`
			`sched_deps = [libbpf, bpftool_target, sched]`
			`else`
			`sched_deps = [libbpf, bpftool_target]`
			`endif`

scheds-rust: build rust schedulers in sequence 2024-04-23 01:06:27 +01:00			`sched = custom_target('scx_layered',`
build: Trigger cargo build on rust sub-projects from meson.build 2023-12-01 21:58:56 +00:00			`output: '@PLAINNAME@.__PHONY__',`
			`input: 'Cargo.toml',`
			`command: [cargo, 'build', '--manifest-path=@INPUT@', '--target-dir=@OUTDIR@',`
build: rust projects now link against libbpf.a if provided 2023-12-02 16:41:26 +00:00			`cargo_build_args],`
build: Pipe down build options to scx_utils::BuildHelpers using env vars 2023-12-02 00:49:32 +00:00			`env: cargo_env,`
meson: introduce serialize build option With commit 5d20f89a ("scheds-rust: build rust schedulers in sequence"), schedulers are now built serially one after the other to prevent meson and cargo from forking NxN parallel tasks. However, this change has made building a single scheduler much more cumbersome, due to the chain of dependencies. For example, building scx_rusty using the specific meson target would still result in all schedulers being built, because they all depend on each other. To address this issue, introduce the new meson build option `serialize=true\|false` (default is false). This option allows to disable the schedulers' build chain, restoring the old behavior. With this option enabled, it is now possible to build just a single scheduler, parallelizing the cargo build properly, without triggering the build of the others. Example: $ meson setup build -Dbuildtype=release -Dserialize=false $ meson compile -C build scx_rusty Signed-off-by: Andrea Righi <andrea.righi@canonical.com> 2024-06-28 08:42:04 +01:00			`depends: sched_deps,`
scheds-rust: build rust schedulers in sequence 2024-04-23 01:06:27 +01:00			`build_always_stale: true)`