add option to run tests in LLDB and turn it on for macos travis

1 files changed, 7 insertions, 3 deletions

diff --git a/build.zig b/build.zig
index adc0d439d6..23359b829f 100644
--- a/build.zig
+++ b/build.zig
@@ -3,16 +3,20 @@ const tests = @import("test/tests.zig");
 
 pub fn build(b: &Builder) {
     const test_filter = b.option([]const u8, "test-filter", "Skip tests that do not match filter");
+    const with_lldb = b.option(bool, "with-lldb", "Run tests in LLDB to get a backtrace if one fails") ?? false;
     const test_step = b.step("test", "Run all the tests");
 
     test_step.dependOn(tests.addPkgTests(b, test_filter,
-        "test/behavior.zig", "behavior", "Run the behavior tests"));
+        "test/behavior.zig", "behavior", "Run the behavior tests",
+        with_lldb));
 
     test_step.dependOn(tests.addPkgTests(b, test_filter,
-        "std/index.zig", "std", "Run the standard library tests"));
+        "std/index.zig", "std", "Run the standard library tests",
+        with_lldb));
 
     test_step.dependOn(tests.addPkgTestsAlwaysLibc(b, test_filter,
-        "std/special/compiler_rt/index.zig", "compiler-rt", "Run the compiler_rt tests"));
+        "std/special/compiler_rt/index.zig", "compiler-rt", "Run the compiler_rt tests",
+        with_lldb));
 
     test_step.dependOn(tests.addCompareOutputTests(b, test_filter));
     test_step.dependOn(tests.addBuildExampleTests(b, test_filter));