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const std = @import("std");
pub fn build(b: *std.Build) void {
const test_step = b.step("test", "Test it");
b.default_step = test_step;
add(b, test_step, .Debug);
}
fn add(b: *std.Build, test_step: *std.Build.Step, optimize: std.builtin.OptimizeMode) void {
const export_table = b.addExecutable(.{
.name = "export_table",
.root_module = b.createModule(.{
.root_source_file = b.path("lib.zig"),
.target = b.resolveTargetQuery(.{ .cpu_arch = .wasm32, .os_tag = .freestanding }),
.optimize = optimize,
}),
});
export_table.entry = .disabled;
export_table.use_llvm = false;
export_table.use_lld = false;
export_table.export_table = true;
export_table.link_gc_sections = false;
// Don't pull in ubsan, since we're just expecting a very minimal executable.
export_table.bundle_ubsan_rt = false;
const regular_table = b.addExecutable(.{
.name = "regular_table",
.root_module = b.createModule(.{
.root_source_file = b.path("lib.zig"),
.target = b.resolveTargetQuery(.{ .cpu_arch = .wasm32, .os_tag = .freestanding }),
.optimize = optimize,
}),
});
regular_table.entry = .disabled;
regular_table.use_llvm = false;
regular_table.use_lld = false;
regular_table.link_gc_sections = false; // Ensure function table is not empty
// Don't pull in ubsan, since we're just expecting a very minimal executable.
regular_table.bundle_ubsan_rt = false;
const check_export = export_table.checkObject();
const check_regular = regular_table.checkObject();
check_export.checkInHeaders();
check_export.checkExact("Section export");
check_export.checkExact("entries 3");
check_export.checkExact("name __indirect_function_table"); // as per linker specification
check_export.checkExact("kind table");
check_regular.checkInHeaders();
check_regular.checkExact("Section table");
check_regular.checkExact("entries 1");
check_regular.checkExact("type funcref");
check_regular.checkExact("min 2"); // index starts at 1 & 1 function pointer = 2.
check_regular.checkExact("max 2");
check_regular.checkInHeaders();
check_regular.checkExact("Section element");
check_regular.checkExact("entries 1");
check_regular.checkExact("table index 0");
check_regular.checkExact("i32.const 1"); // we want to start function indexes at 1
check_regular.checkExact("indexes 1"); // 1 function pointer
test_step.dependOn(&check_export.step);
test_step.dependOn(&check_regular.step);
}
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