commit cc84490dc9d36dc07b871cc4eb2c6c52daf6e5a8
parent 5b870061ea2b12aa3ea2ee6d1ade0ad91f7871c5
Author: Walther Chen <walther.chen@gmail.com>
Date:   Wed,  9 Nov 2022 23:39:42 -0500

enable build trace option

Diffstat:

Mbuild.zig | 6++++++


Msrc/opt1.zig | 6++++++


2 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/build.zig b/build.zig
@@ -11,6 +11,11 @@ pub fn build(b: *std.build.Builder) void {
     // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
     const mode = b.standardReleaseOptions();
 
+    // Build option for tracing instructions
+    const trace_value = b.option(bool, "trace", "enable tracing instructions for interpreter") orelse false;
+    const trace_step = b.addOptions();
+    trace_step.addOption(bool, "TRACE", trace_value);
+
     const stages = [_][]const u8{
         "og",
         "opt1",
@@ -22,6 +27,7 @@ pub fn build(b: *std.build.Builder) void {
         const exe = b.addExecutable(stage, "src/" ++ stage ++ ".zig");
         exe.setTarget(target);
         exe.setBuildMode(mode);
+        exe.addOptions("build_with_trace", trace_step);
         exe.install();
 
         const run_cmd = exe.run();
diff --git a/src/opt1.zig b/src/opt1.zig
@@ -7,7 +7,13 @@ const ArrayList = std.ArrayList;
 const Program = common.Program;
 const JumpTable = ArrayList(usize);
 
+const trace = @import("build_with_trace");
+
 pub fn main() anyerror!void {
+    if (trace.TRACE) {
+        std.debug.print("Building with TRACE enabled\n", .{});
+    }
+
     try common.runInterpreter(interpret);
 }