mingkaic/rules_m4

Bazel build rules for GNU M4

Bazel build rules for GNU M4

Overview

load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

http_archive(
    name = "rules_m4",
    # See https://github.com/jmillikin/rules_m4/releases for copy-pastable
    # URLs and checksums.
)

load("@rules_m4//m4:m4.bzl", "m4_register_toolchains")

m4_register_toolchains()

load("@rules_m4//m4:m4.bzl", "m4")

m4(
    name = "hello_world",
    srcs = ["hello_world.in.txt"],
    output = "hello_world.txt",
)

genrule(
    name = "hello_world_gen",
    srcs = ["hello_world.in.txt"],
    outs = ["hello_world_gen.txt"],
    cmd = "$(M4) $(SRCS) > $@",
    toolchains = ["@rules_m4//m4:toolchain"],
)

Toolchains

load("@rules_m4//m4:m4.bzl", "m4_common")

def _my_rule(ctx):
    m4_toolchain = m4_common.m4_toolchain(ctx)
    ctx.actions.run(
        executable = m4_toolchain.m4_executable,
        inputs = m4_toolchain.files,
        # ...
    )

my_rule = rule(
    _my_rule,
    toolchains = [m4_common.TOOLCHAIN_TYPE],
)