91 lines
3.8 KiB
Zig
91 lines
3.8 KiB
Zig
const std = @import("std");
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// Although this function looks imperative, note that its job is to
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// declaratively construct a build graph that will be executed by an external
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// runner.
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pub fn build(b: *std.Build) void {
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// Standard target options allows the person running `zig build` to choose
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// what target to build for. Here we do not override the defaults, which
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// means any target is allowed, and the default is native. Other options
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// for restricting supported target set are available.
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const target = b.standardTargetOptions(.{});
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// Standard optimization options allow the person running `zig build` to select
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// between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not
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// set a preferred release mode, allowing the user to decide how to optimize.
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const optimize = b.standardOptimizeOption(.{});
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const exe = b.addExecutable(.{
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.name = "fontfinder",
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// In this case the main source file is merely a path, however, in more
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// complicated build scripts, this could be a generated file.
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.root_source_file = b.path("src/main.zig"),
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.target = target,
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.optimize = optimize,
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});
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const fontconfig = b.dependency("fontconfig", .{});
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configure(b, fontconfig, exe);
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// This declares intent for the executable to be installed into the
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// standard location when the user invokes the "install" step (the default
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// step when running `zig build`).
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b.installArtifact(exe);
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// This *creates* a Run step in the build graph, to be executed when another
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// step is evaluated that depends on it. The next line below will establish
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// such a dependency.
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const run_cmd = b.addRunArtifact(exe);
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// By making the run step depend on the install step, it will be run from the
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// installation directory rather than directly from within the cache directory.
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// This is not necessary, however, if the application depends on other installed
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// files, this ensures they will be present and in the expected location.
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run_cmd.step.dependOn(b.getInstallStep());
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// This allows the user to pass arguments to the application in the build
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// command itself, like this: `zig build run -- arg1 arg2 etc`
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if (b.args) |args| {
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run_cmd.addArgs(args);
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}
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// This creates a build step. It will be visible in the `zig build --help` menu,
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// and can be selected like this: `zig build run`
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// This will evaluate the `run` step rather than the default, which is "install".
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const run_step = b.step("run", "Run the app");
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run_step.dependOn(&run_cmd.step);
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// Creates a step for unit testing. This only builds the test executable
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// but does not run it.
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const unit_tests = b.addTest(.{
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.root_source_file = b.path("src/main.zig"),
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.target = target,
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.optimize = optimize,
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});
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configure(b, fontconfig, unit_tests);
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const run_unit_tests = b.addRunArtifact(unit_tests);
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// Similar to creating the run step earlier, this exposes a `test` step to
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// the `zig build --help` menu, providing a way for the user to request
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// running the unit tests.
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const test_step = b.step("test", "Run unit tests");
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test_step.dependOn(&run_unit_tests.step);
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}
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fn configure(b: *std.Build, fontconfig: *std.Build.Dependency, object: anytype) void {
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// object.linkage = .static;
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object.linkLibC();
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// Fontconfig must be installed. Docker can also be used (see Dockerfile)
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object.addSystemIncludePath(fontconfig.path(""));
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object.linkSystemLibrary("fontconfig");
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// object.linkSystemLibrary("expat"); // fontconfig dependency - needed for static builds
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object.addLibraryPath(.{ .cwd_relative = "/usr/lib" });
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object.addCSourceFile(.{
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.file = b.path("src/fontconfig.c"),
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.flags = &[_][]const u8{"-std=c99"},
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});
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}
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