diff --git a/utils/build-presets.ini b/utils/build-presets.ini
index c0c5ed5262643..a41f554a172d2 100644
--- a/utils/build-presets.ini
+++ b/utils/build-presets.ini
@@ -2625,6 +2625,7 @@ swift-stdlib-has-stdin=0
 swift-stdlib-has-environ=0
 swift-stdlib-has-locale=0
 swift-runtime-static-image-inspection=1
+swift-stdlib-tracing=0
 swift-stdlib-concurrency-tracing=0
 swift-stdlib-os-versioning=0
 swift-stdlib-has-commandline=0
diff --git a/utils/build-script-impl b/utils/build-script-impl
index 21712a923143b..b08ee527e3b0e 100755
--- a/utils/build-script-impl
+++ b/utils/build-script-impl
@@ -211,6 +211,7 @@ KNOWN_SETTINGS=(
     swift-runtime-static-image-inspection         "0"               "whether to build stdlib assuming the runtime environment only supports a single runtime image with Swift code"
     swift-threading-package                       ""                "override the threading package for the host build; this is either a single package or a semicolon-separated list of sdk:package pairs.  Valid packages are empty string (no override), 'pthreads', 'darwin', 'linux', 'win32', 'c11', 'none'"
     swift-stdlib-single-threaded-concurrency      "0"               "build Swift concurrency in single-threaded mode"
+    swift-stdlib-tracing                          ""                "whether to enable tracing signposts for the stdlib; default is 1 on Darwin platforms, 0 otherwise"
     swift-stdlib-concurrency-tracing              ""                "whether to enable tracing signposts for concurrency; default is 1 on Darwin platforms, 0 otherwise"
     swift-stdlib-use-relative-protocol-witness-tables "0"            "whether to use relative protocol witness table"
     swift-enable-runtime-function-counters        ""                "whether to enable runtime function counters"