1 const std = @import("std");
3 // Although this function looks imperative, note that its job is to
4 // declaratively construct a build graph that will be executed by an external
6 pub fn build(b: *std.Build) void {
7 // Standard target options allows the person running `zig build` to choose
8 // what target to build for. Here we do not override the defaults, which
9 // means any target is allowed, and the default is native. Other options
10 // for restricting supported target set are available.
11 const target = b.standardTargetOptions(.{});
13 // Standard optimization options allow the person running `zig build` to select
14 // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not
15 // set a preferred release mode, allowing the user to decide how to optimize.
16 const optimize = b.standardOptimizeOption(.{});
18 const exe = b.addExecutable(.{
20 // In this case the main source file is merely a path, however, in more
21 // complicated build scripts, this could be a generated file.
22 .root_source_file = .{ .cwd_relative = "src/main.zig" },
27 exe.addIncludePath(.{ .cwd_relative = "./lmdb/libraries/liblmdb" });
29 exe.addCSourceFiles(.{ .files = &.{
30 "./lmdb/libraries/liblmdb/midl.c",
31 "./lmdb/libraries/liblmdb/mdb.c",
36 // This declares intent for the executable to be installed into the
37 // standard location when the user invokes the "install" step (the default
38 // step when running `zig build`).
39 b.installArtifact(exe);
41 // This *creates* a Run step in the build graph, to be executed when another
42 // step is evaluated that depends on it. The next line below will establish
44 const run_cmd = b.addRunArtifact(exe);
46 // By making the run step depend on the install step, it will be run from the
47 // installation directory rather than directly from within the cache directory.
48 // This is not necessary, however, if the application depends on other installed
49 // files, this ensures they will be present and in the expected location.
50 run_cmd.step.dependOn(b.getInstallStep());
52 // This allows the user to pass arguments to the application in the build
53 // command itself, like this: `zig build run -- arg1 arg2 etc`
55 run_cmd.addArgs(args);
58 // This creates a build step. It will be visible in the `zig build --help` menu,
59 // and can be selected like this: `zig build run`
60 // This will evaluate the `run` step rather than the default, which is "install".
61 const run_step = b.step("run", "Run the app");
62 run_step.dependOn(&run_cmd.step);
64 // Creates a step for unit testing. This only builds the test executable
65 // but does not run it.
66 const unit_tests = b.addTest(.{
67 .root_source_file = .{ .cwd_relative = "src/main.zig" },
72 unit_tests.addIncludePath(.{ .cwd_relative = "./lmdb/libraries/liblmdb" });
74 unit_tests.addCSourceFiles(.{ .files = &.{
75 "./lmdb/libraries/liblmdb/midl.c",
76 "./lmdb/libraries/liblmdb/mdb.c",
79 unit_tests.linkLibC();
81 const test_bin = b.addInstallBinFile(unit_tests.getEmittedBin(), "./lmdb_test");
83 const run_unit_tests = b.addRunArtifact(unit_tests);
85 // Similar to creating the run step earlier, this exposes a `test` step to
86 // the `zig build --help` menu, providing a way for the user to request
87 // running the unit tests.
88 const test_step = b.step("test", "Run unit tests");
89 test_step.dependOn(&run_unit_tests.step);
90 test_step.dependOn(&unit_tests.step);
91 test_step.dependOn(&test_bin.step);