SERVER-19802 Included compiled modules in --version output

src/mongo/db/mongod_options.cpp

@@ -583,6 +583,7 @@ bool handlePreValidationMongodOptions(const moe::Environment& params,
         log() << mongodVersion() << endl;
         printGitVersion();
         printOpenSSLVersion();
+        printCompiledModules();
         return false;
     }
     if (params.count("sysinfo") && params["sysinfo"].as<bool>() == true) {

src/mongo/util/version.cpp.in

@@ -73,6 +73,20 @@ namespace mongo {
         return modules_list;
     }
 
+    void printCompiledModules() {
+        stringstream ss;
+        ss << "modules: ";
+        auto modules_list = compiledModules();
+        if (modules_list.size() == 0) {
+            ss << "none";
+        } else {
+            for (const auto& m: modules_list) {
+                ss << m << " ";
+            }
+        }
+        log() << ss.str();
+    }
+
     bool isSameMajorVersion(const char* version) {
         int major = -1, minor = -1;
         pcrecpp::RE ver_regex("^(\\d+)\\.(\\d+)\\.");

src/mongo/util/version.h

@@ -47,6 +47,7 @@ const char* gitVersion();
 const char* distName();
 void printGitVersion();
 std::vector<std::string> compiledModules();
+void printCompiledModules();
 
 // Checks whether another version is the same major version as us
 bool isSameMajorVersion(const char* version);