message(): Add support for log levels

Relates: #18943
Co-Authored-By: Craig Scott <craig.scott@crascit.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/Source/cmMessageCommand.cxx b/Source/cmMessageCommand.cxx
index 2724030c24..724203736e 100644
--- a/Source/cmMessageCommand.cxx
+++ b/Source/cmMessageCommand.cxx
@@ -8,6 +8,9 @@
 #include "cmMessenger.h"
 #include "cmRange.h"
 #include "cmSystemTools.h"
+#include "cmake.h"
+
+#include <cassert>
 
 class cmExecutionStatus;
 
@@ -24,41 +27,80 @@ bool cmMessageCommand::InitialPass(std::vector<std::string> const& args,
   MessageType type = MessageType::MESSAGE;
   bool status = false;
   bool fatal = false;
+  auto level = cmake::LogLevel::LOG_UNDEFINED;
   if (*i == "SEND_ERROR") {
     type = MessageType::FATAL_ERROR;
+    level = cmake::LogLevel::LOG_ERROR;
     ++i;
   } else if (*i == "FATAL_ERROR") {
     fatal = true;
     type = MessageType::FATAL_ERROR;
+    level = cmake::LogLevel::LOG_ERROR;
     ++i;
   } else if (*i == "WARNING") {
     type = MessageType::WARNING;
+    level = cmake::LogLevel::LOG_WARNING;
     ++i;
   } else if (*i == "AUTHOR_WARNING") {
     if (this->Makefile->IsSet("CMAKE_SUPPRESS_DEVELOPER_ERRORS") &&
         !this->Makefile->IsOn("CMAKE_SUPPRESS_DEVELOPER_ERRORS")) {
       fatal = true;
       type = MessageType::AUTHOR_ERROR;
+      level = cmake::LogLevel::LOG_ERROR;
     } else if (!this->Makefile->IsOn("CMAKE_SUPPRESS_DEVELOPER_WARNINGS")) {
       type = MessageType::AUTHOR_WARNING;
+      level = cmake::LogLevel::LOG_WARNING;
     } else {
       return true;
     }
     ++i;
   } else if (*i == "STATUS") {
     status = true;
+    level = cmake::LogLevel::LOG_STATUS;
+    ++i;
+  } else if (*i == "VERBOSE") {
+    status = true;
+    level = cmake::LogLevel::LOG_VERBOSE;
+    ++i;
+  } else if (*i == "DEBUG") {
+    status = true;
+    level = cmake::LogLevel::LOG_DEBUG;
+    ++i;
+  } else if (*i == "TRACE") {
+    status = true;
+    level = cmake::LogLevel::LOG_TRACE;
     ++i;
   } else if (*i == "DEPRECATION") {
     if (this->Makefile->IsOn("CMAKE_ERROR_DEPRECATED")) {
       fatal = true;
       type = MessageType::DEPRECATION_ERROR;
+      level = cmake::LogLevel::LOG_ERROR;
     } else if ((!this->Makefile->IsSet("CMAKE_WARN_DEPRECATED") ||
                 this->Makefile->IsOn("CMAKE_WARN_DEPRECATED"))) {
       type = MessageType::DEPRECATION_WARNING;
+      level = cmake::LogLevel::LOG_WARNING;
     } else {
       return true;
     }
     ++i;
+  } else if (*i == "NOTICE") {
+    // `NOTICE` message type is going to be output to stderr
+    level = cmake::LogLevel::LOG_NOTICE;
+    ++i;
+  } else {
+    // Messages w/o any type are `NOTICE`s
+    level = cmake::LogLevel::LOG_NOTICE;
+  }
+  assert("Message log level expected to be set" &&
+         level != cmake::LogLevel::LOG_UNDEFINED);
+
+  auto desiredLevel = this->Makefile->GetCMakeInstance()->GetLogLevel();
+  assert("Expected a valid log level here" &&
+         desiredLevel != cmake::LogLevel::LOG_UNDEFINED);
+
+  if (desiredLevel < level) {
+    // Suppress the message
+    return true;
   }
 
   std::string message = cmJoin(cmMakeRange(i, args.end()), std::string());