Fix the documentation for propeller_optimize build option.
PiperOrigin-RevId: 450486190
diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java
index df2ec90..a44ebbd 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/CppOptions.java
@@ -506,7 +506,20 @@
category = "flags",
documentationCategory = OptionDocumentationCategory.OUTPUT_PARAMETERS,
effectTags = {OptionEffectTag.ACTION_COMMAND_LINES, OptionEffectTag.AFFECTS_OUTPUTS},
- help = "The layout file for propeller code layout optimizations.")
+ help =
+ "Use Propeller profile information to optimize the build target."
+ + "A propeller profile must consist of at least one of two files, a cc profile "
+ + "and a ld profile. This flag accepts a build label which must refer to "
+ + "the propeller profile input files. For example, the BUILD file that "
+ + "defines the label, in a/b/BUILD:"
+ + "propeller_optimize("
+ + " name = \"propeller_profile\","
+ + " cc_profile = \"propeller_cc_profile.txt\","
+ + " ld_profile = \"propeller_ld_profile.txt\","
+ + ")"
+ + "An exports_files directive may have to be added to the corresponding package "
+ + "to make these files visible to Bazel. The option must be used as: "
+ + "--propeller_optimize=//a/b:propeller_profile")
public Label propellerOptimizeLabel;
public Label getPropellerOptimizeLabel() {
