Add -Werror and -Wno-error command-line options

Expand the -W set of cmake options to include support for the -Werror
and -Wno-error format, which is used to control upgrading and
downgrading warning and error messages. Implement support for these new
formats for the dev and deprecated message types.

Add tests and updated documentation for new options.

27 files changed, 371 insertions, 35 deletions

diff --git a/Help/manual/OPTIONS_BUILD.txt b/Help/manual/OPTIONS_BUILD.txt
index 977264c..b428a74 100644
--- a/Help/manual/OPTIONS_BUILD.txt
+++ b/Help/manual/OPTIONS_BUILD.txt
@@ -86,6 +86,18 @@
  Enable warnings that are meant for the author of the CMakeLists.txt
  files. By default this will also turn on deprecation warnings.
 
+``-Werror=dev``
+ Make developer warnings errors.
+
+ Make warnings that are meant for the author of the CMakeLists.txt files
+ errors. By default this will also turn on deprecated warnings as errors.
+
+``-Wno-error=dev``
+ Make developer warnings not errors.
+
+ Make warnings that are meant for the author of the CMakeLists.txt files not
+ errors. By default this will also turn off deprecated warnings as errors.
+
 ``-Wdeprecated``
  Enable deprecated functionality warnings.
 
@@ -97,3 +109,15 @@
 
  Suppress warnings for usage of deprecated functionality, that are meant
  for the author of the CMakeLists.txt files.
+
+``-Werror=deprecated``
+ Make deprecated macro and function warnings errors.
+
+ Make warnings for usage of deprecated macros and functions, that are meant
+ for the author of the CMakeLists.txt files, errors.
+
+``-Wno-error=deprecated``
+ Make deprecated macro and function warnings not errors.
+
+ Make warnings for usage of deprecated macros and functions, that are meant
+ for the author of the CMakeLists.txt files, not errors.
diff --git a/Help/release/dev/cmake-W-options.rst b/Help/release/dev/cmake-W-options.rst
index 38e71f9..c055f96 100644
--- a/Help/release/dev/cmake-W-options.rst
+++ b/Help/release/dev/cmake-W-options.rst
@@ -13,3 +13,10 @@ cmake-W-options
 
 * Warnings about deprecated functionality can now be controlled in the
   :manual:`cmake-gui(1)` application.
+
+* The suppression of developer warnings as errors can now be controlled with
+  the new ``-Werror=dev`` and ``-Wno-error=dev`` :manual:`cmake(1)` options.
+
+* The :variable:`CMAKE_ERROR_DEPRECATED` variable can now be set using the
+  ``-Werror=deprecated`` and ``-Wno-error=deprecated`` :manual:`cmake(1)`
+  options.
diff --git a/Source/cmMessageCommand.cxx b/Source/cmMessageCommand.cxx
index 8272eb0..1c67cea 100644
--- a/Source/cmMessageCommand.cxx
+++ b/Source/cmMessageCommand.cxx
@@ -25,6 +25,7 @@ bool cmMessageCommand
   cmake::MessageType type = cmake::MESSAGE;
   bool status = false;
   bool fatal = false;
+  cmake* cm = this->Makefile->GetCMakeInstance();
   if (*i == "SEND_ERROR")
     {
     type = cmake::FATAL_ERROR;
@@ -43,15 +44,19 @@ bool cmMessageCommand
     }
   else if (*i == "AUTHOR_WARNING")
     {
-    if (this->Makefile->GetCMakeInstance()->GetSuppressDevWarnings(
-        this->Makefile))
+    if (cm->GetDevWarningsAsErrors(this->Makefile))
       {
-      return true;
+      fatal = true;
+      type = cmake::AUTHOR_ERROR;
       }
-    else
+    else if (!cm->GetSuppressDevWarnings(this->Makefile))
       {
       type = cmake::AUTHOR_WARNING;
       }
+    else
+      {
+      return true;
+      }
     ++i;
     }
   else if (*i == "STATUS")
@@ -61,22 +66,18 @@ bool cmMessageCommand
     }
   else if (*i == "DEPRECATION")
     {
-    if (this->Makefile->IsOn("CMAKE_ERROR_DEPRECATED"))
+    if (cm->GetDeprecatedWarningsAsErrors(this->Makefile))
       {
       fatal = true;
       type = cmake::DEPRECATION_ERROR;
       }
+    else if (!cm->GetSuppressDeprecatedWarnings(this->Makefile))
+      {
+      type = cmake::DEPRECATION_WARNING;
+      }
     else
       {
-      if (this->Makefile->GetCMakeInstance()->GetSuppressDeprecatedWarnings(
-          this->Makefile))
-        {
-        return true;
-        }
-      else
-        {
-        type = cmake::DEPRECATION_WARNING;
-        }
+      return true;
       }
     ++i;
     }
diff --git a/Source/cmake.cxx b/Source/cmake.cxx
index 7992495..8f6b952 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -291,6 +291,7 @@ bool cmake::SetCacheArgs(const std::vector<std::string>& args)
 
       std::string name;
       bool foundNo = false;
+      bool foundError = false;
       unsigned int nameStartPosition = 0;
 
       if (entry.find("no-", nameStartPosition) == 0)
@@ -299,6 +300,12 @@ bool cmake::SetCacheArgs(const std::vector<std::string>& args)
         nameStartPosition += 3;
         }
 
+      if (entry.find("error=", nameStartPosition) == 0)
+        {
+        foundError = true;
+        nameStartPosition += 6;
+        }
+
       name = entry.substr(nameStartPosition);
       if (name.empty())
         {
@@ -306,16 +313,27 @@ bool cmake::SetCacheArgs(const std::vector<std::string>& args)
         return false;
         }
 
-      if (!foundNo)
+      if (!foundNo && !foundError)
         {
         // -W<name>
         this->DiagLevels[name] = std::max(this->DiagLevels[name],
                                           DIAG_WARN);
         }
+      else if (foundNo && !foundError)
+        {
+         // -Wno<name>
+         this->DiagLevels[name] = DIAG_IGNORE;
+        }
+      else if (!foundNo && foundError)
+        {
+        // -Werror=<name>
+        this->DiagLevels[name] = DIAG_ERROR;
+        }
       else
         {
-        // -Wno<name>
-        this->DiagLevels[name] = DIAG_IGNORE;
+        // -Wno-error=<name>
+        this->DiagLevels[name] = std::min(this->DiagLevels[name],
+                                          DIAG_WARN);
         }
       }
     else if(arg.find("-U",0) == 0)
@@ -1270,10 +1288,17 @@ int cmake::Configure()
     if (diagLevel == DIAG_IGNORE)
       {
       this->SetSuppressDeprecatedWarnings(true);
+      this->SetDeprecatedWarningsAsErrors(false);
       }
     else if (diagLevel == DIAG_WARN)
       {
       this->SetSuppressDeprecatedWarnings(false);
+      this->SetDeprecatedWarningsAsErrors(false);
+      }
+    else if (diagLevel == DIAG_ERROR)
+      {
+      this->SetSuppressDeprecatedWarnings(false);
+      this->SetDeprecatedWarningsAsErrors(true);
       }
     }
 
@@ -1283,9 +1308,11 @@ int cmake::Configure()
 
     const char* cachedWarnDeprecated =
            this->State->GetCacheEntryValue("CMAKE_WARN_DEPRECATED");
+    const char* cachedErrorDeprecated =
+           this->State->GetCacheEntryValue("CMAKE_ERROR_DEPRECATED");
 
     // don't overwrite deprecated warning setting from a previous invocation
-    if (!cachedWarnDeprecated)
+    if (!cachedWarnDeprecated && !cachedErrorDeprecated)
       {
       setDeprecatedVariables = true;
       }
@@ -1294,19 +1321,34 @@ int cmake::Configure()
     if (diagLevel == DIAG_IGNORE)
       {
       this->SetSuppressDevWarnings(true);
+      this->SetDevWarningsAsErrors(false);
 
       if (setDeprecatedVariables)
         {
         this->SetSuppressDeprecatedWarnings(true);
+        this->SetDeprecatedWarningsAsErrors(false);
         }
       }
     else if (diagLevel == DIAG_WARN)
       {
       this->SetSuppressDevWarnings(false);
+      this->SetDevWarningsAsErrors(false);
+
+      if (setDeprecatedVariables)
+        {
+        this->SetSuppressDeprecatedWarnings(false);
+        this->SetDeprecatedWarningsAsErrors(false);
+        }
+      }
+    else if (diagLevel == DIAG_ERROR)
+      {
+      this->SetSuppressDevWarnings(false);
+      this->SetDevWarningsAsErrors(true);
 
       if (setDeprecatedVariables)
         {
         this->SetSuppressDeprecatedWarnings(false);
+        this->SetDeprecatedWarningsAsErrors(true);
         }
       }
     }
@@ -2547,16 +2589,45 @@ static bool cmakeCheckStampList(const char* stampList)
   return true;
 }
 
+cmake::MessageType cmake::ConvertMessageType(cmake::MessageType t)
+{
+  bool warningsAsErrors;
+
+  if (t == cmake::AUTHOR_WARNING || t == cmake::AUTHOR_ERROR)
+    {
+    warningsAsErrors = this->GetDevWarningsAsErrors();
+    if (warningsAsErrors && t == cmake::AUTHOR_WARNING)
+      {
+      t = cmake::AUTHOR_ERROR;
+      }
+    else if (!warningsAsErrors && t == cmake::AUTHOR_ERROR)
+      {
+      t = cmake::AUTHOR_WARNING;
+      }
+    }
+  else if (t == cmake::DEPRECATION_WARNING || t == cmake::DEPRECATION_ERROR)
+    {
+    warningsAsErrors = this->GetDeprecatedWarningsAsErrors();
+    if (warningsAsErrors && t == cmake::DEPRECATION_WARNING)
+      {
+      t = cmake::DEPRECATION_ERROR;
+      }
+    else if (!warningsAsErrors && t == cmake::DEPRECATION_ERROR)
+      {
+      t = cmake::DEPRECATION_WARNING;
+      }
+    }
+
+  return t;
+}
+
 bool cmake::IsMessageTypeVisible(cmake::MessageType t)
 {
   bool isVisible = true;
 
   if(t == cmake::DEPRECATION_ERROR)
     {
-    // if CMAKE_ERROR_DEPRECATED is on, show the message, otherwise suppress it
-    const char* errorDeprecated = this->State->GetCacheEntryValue(
-                                                "CMAKE_ERROR_DEPRECATED");
-    if(cmSystemTools::IsOff(errorDeprecated))
+    if(!this->GetDeprecatedWarningsAsErrors())
       {
       isVisible = false;
       }
@@ -2568,6 +2639,13 @@ bool cmake::IsMessageTypeVisible(cmake::MessageType t)
       isVisible = false;
       }
     }
+  else if (t == cmake::AUTHOR_ERROR)
+    {
+    if (!this->GetDevWarningsAsErrors())
+      {
+      isVisible = false;
+      }
+    }
   else if (t == cmake::AUTHOR_WARNING)
     {
     if (this->GetSuppressDevWarnings())
@@ -2606,6 +2684,10 @@ bool cmake::PrintMessagePreamble(cmake::MessageType t, std::ostream& msg)
     {
     msg << "CMake Warning (dev)";
     }
+  else if (t == cmake::AUTHOR_ERROR)
+    {
+    msg << "CMake Error (dev)";
+    }
   else
     {
     msg << "CMake Warning";
@@ -2630,6 +2712,12 @@ void displayMessage(cmake::MessageType t, std::ostringstream& msg)
     msg <<
       "This warning is for project developers.  Use -Wno-dev to suppress it.";
     }
+  else if (t == cmake::AUTHOR_ERROR)
+    {
+    msg <<
+      "This error is for project developers. Use -Wno-error=dev to suppress "
+      "it.";
+    }
 
   // Add a terminating blank line.
   msg << "\n";
@@ -2653,7 +2741,8 @@ void displayMessage(cmake::MessageType t, std::ostringstream& msg)
   // Output the message.
   if(t == cmake::FATAL_ERROR
      || t == cmake::INTERNAL_ERROR
-     || t == cmake::DEPRECATION_ERROR)
+     || t == cmake::DEPRECATION_ERROR
+     || t == cmake::AUTHOR_ERROR)
     {
     cmSystemTools::SetErrorOccured();
     cmSystemTools::Message(msg.str().c_str(), "Error");
@@ -2671,6 +2760,17 @@ void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
 {
   cmListFileBacktrace backtrace = bt;
 
+  if (!force)
+    {
+    // override the message type, if needed, for warnings and errors
+    cmake::MessageType override = this->ConvertMessageType(t);
+    if (override != t)
+      {
+      t = override;
+      force = true;
+      }
+    }
+
   if (!force && !this->IsMessageTypeVisible(t))
     {
     return;
@@ -2698,6 +2798,17 @@ void cmake::IssueMessage(cmake::MessageType t, std::string const& text,
                          cmListFileContext const& lfc,
                          bool force)
 {
+  if (!force)
+    {
+    // override the message type, if needed, for warnings and errors
+    cmake::MessageType override = this->ConvertMessageType(t);
+    if (override != t)
+      {
+      t = override;
+      force = true;
+      }
+    }
+
   if (!force && !this->IsMessageTypeVisible(t))
     {
     return;
@@ -2941,3 +3052,74 @@ void cmake::SetSuppressDeprecatedWarnings(bool b)
                       "functionality.",
                       cmState::INTERNAL);
 }
+
+bool cmake::GetDevWarningsAsErrors(cmMakefile const* mf)
+{
+  if (mf)
+    {
+    return (mf->IsSet("CMAKE_SUPPRESS_DEVELOPER_ERRORS") &&
+            !mf->IsOn("CMAKE_SUPPRESS_DEVELOPER_ERRORS"));
+    }
+  else
+    {
+    const char* cacheEntryValue = this->State->GetCacheEntryValue(
+      "CMAKE_SUPPRESS_DEVELOPER_ERRORS");
+    return cacheEntryValue && cmSystemTools::IsOff(cacheEntryValue);
+    }
+}
+
+void cmake::SetDevWarningsAsErrors(bool b)
+{
+  std::string value;
+
+  // equivalent to -Werror=dev
+  if (b)
+    {
+    value = "FALSE";
+    }
+  // equivalent to -Wno-error=dev
+  else
+    {
+    value = "TRUE";
+    }
+
+  this->AddCacheEntry("CMAKE_SUPPRESS_DEVELOPER_ERRORS", value.c_str(),
+                      "Suppress errors that are meant for"
+                      " the author of the CMakeLists.txt files.",
+                      cmState::INTERNAL);
+}
+
+bool cmake::GetDeprecatedWarningsAsErrors(cmMakefile const* mf)
+{
+  if (mf)
+    {
+    return mf->IsOn("CMAKE_ERROR_DEPRECATED");
+    }
+  else
+    {
+    const char* cacheEntryValue = this->State->GetCacheEntryValue(
+      "CMAKE_ERROR_DEPRECATED");
+    return cmSystemTools::IsOn(cacheEntryValue);
+    }
+}
+
+void cmake::SetDeprecatedWarningsAsErrors(bool b)
+{
+  std::string value;
+
+  // equivalent to -Werror=deprecated
+  if (b)
+    {
+    value = "TRUE";
+    }
+  // equivalent to -Wno-error=deprecated
+  else
+    {
+    value = "FALSE";
+    }
+
+  this->AddCacheEntry("CMAKE_ERROR_DEPRECATED", value.c_str(),
+                      "Whether to issue deprecation errors for macros"
+                      " and functions.",
+                      cmState::INTERNAL);
+}
diff --git a/Source/cmake.h b/Source/cmake.h
index 298d82b..8496705 100644
--- a/Source/cmake.h
+++ b/Source/cmake.h
@@ -59,6 +59,7 @@ class cmake
  public:
   enum MessageType
   { AUTHOR_WARNING,
+    AUTHOR_ERROR,
     FATAL_ERROR,
     INTERNAL_ERROR,
     MESSAGE,
@@ -71,7 +72,8 @@ class cmake
   enum DiagLevel
   {
     DIAG_IGNORE,
-    DIAG_WARN
+    DIAG_WARN,
+    DIAG_ERROR
   };
 
   /** \brief Describes the working modes of cmake */
@@ -330,6 +332,28 @@ class cmake
    */
   void SetSuppressDeprecatedWarnings(bool v);
 
+  /*
+   * Get the state of treating developer (author) warnings as errors.
+   * Returns false, by default, if warnings should not be treated as errors,
+   * true otherwise.
+   */
+  bool GetDevWarningsAsErrors(cmMakefile const* mf = NULL);
+  /**
+   * Set the state of treating developer (author) warnings as errors.
+   */
+  void SetDevWarningsAsErrors(bool v);
+
+  /*
+   * Get the state of treating deprecated warnings as errors.
+   * Returns false, by default, if warnings should not be treated as errors,
+   * true otherwise.
+   */
+  bool GetDeprecatedWarningsAsErrors(cmMakefile const* mf = NULL);
+  /**
+   * Set the state of treating developer (author) warnings as errors.
+   */
+  void SetDeprecatedWarningsAsErrors(bool v);
+
   /** Display a message to the user.  */
   void IssueMessage(cmake::MessageType t, std::string const& text,
         cmListFileBacktrace const& backtrace = cmListFileBacktrace(),
@@ -441,6 +465,12 @@ private:
   // Print a list of valid generators to stderr.
   void PrintGeneratorList();
 
+  /**
+   * Convert a message type between a warning and an error, based on the state
+   * of the error output CMake variables, in the cache.
+   */
+  cmake::MessageType ConvertMessageType(cmake::MessageType t);
+
   /*
    * Check if messages of this type should be output, based on the state of the
    * warning and error output CMake variables, in the cache.
@@ -457,10 +487,16 @@ private:
   {"-G <generator-name>", "Specify a build system generator."},\
   {"-T <toolset-name>", "Specify toolset name if supported by generator."}, \
   {"-A <platform-name>", "Specify platform name if supported by generator."}, \
-  {"-Wno-dev", "Suppress developer warnings."},\
   {"-Wdev", "Enable developer warnings."},\
+  {"-Wno-dev", "Suppress developer warnings."},\
+  {"-Werror=dev", "Make developer warnings errors."},\
+  {"-Wno-error=dev", "Make developer warnings not errors."},\
   {"-Wdeprecated", "Enable deprecation warnings."},\
-  {"-Wno-deprecated", "Suppress deprecation warnings."}
+  {"-Wno-deprecated", "Suppress deprecation warnings."},\
+  {"-Werror=deprecated", "Make deprecated macro and function warnings " \
+                         "errors."},\
+  {"-Wno-error=deprecated", "Make deprecated macro and function warnings " \
+                            "not errors."}
 
 #define FOR_EACH_C_FEATURE(F) \
   F(c_function_prototypes) \
diff --git a/Tests/RunCMake/CommandLine/RunCMakeTest.cmake b/Tests/RunCMake/CommandLine/RunCMakeTest.cmake
index 5e2200f..e77ba1f 100644
--- a/Tests/RunCMake/CommandLine/RunCMakeTest.cmake
+++ b/Tests/RunCMake/CommandLine/RunCMakeTest.cmake
@@ -187,6 +187,14 @@ set(RunCMake_TEST_OPTIONS -Wdev)
 run_cmake(Wdev)
 unset(RunCMake_TEST_OPTIONS)
 
+set(RunCMake_TEST_OPTIONS -Werror=dev)
+run_cmake(Werror_dev)
+unset(RunCMake_TEST_OPTIONS)
+
+set(RunCMake_TEST_OPTIONS -Wno-error=dev)
+run_cmake(Wno-error_deprecated)
+unset(RunCMake_TEST_OPTIONS)
+
 # -Wdev should not override deprecated options if specified
 set(RunCMake_TEST_OPTIONS -Wdev -Wno-deprecated)
 run_cmake(Wno-deprecated)
@@ -200,6 +208,11 @@ set(RunCMake_TEST_OPTIONS -Wdev)
 run_cmake(Wdeprecated)
 unset(RunCMake_TEST_OPTIONS)
 
+# -Werror=dev should enable deprecated errors as well
+set(RunCMake_TEST_OPTIONS -Werror=dev)
+run_cmake(Werror_deprecated)
+unset(RunCMake_TEST_OPTIONS)
+
 set(RunCMake_TEST_OPTIONS -Wdeprecated)
 run_cmake(Wdeprecated)
 unset(RunCMake_TEST_OPTIONS)
@@ -208,6 +221,14 @@ set(RunCMake_TEST_OPTIONS -Wno-deprecated)
 run_cmake(Wno-deprecated)
 unset(RunCMake_TEST_OPTIONS)
 
+set(RunCMake_TEST_OPTIONS -Werror=deprecated)
+run_cmake(Werror_deprecated)
+unset(RunCMake_TEST_OPTIONS)
+
+set(RunCMake_TEST_OPTIONS -Wno-error=deprecated)
+run_cmake(Wno-error_deprecated)
+unset(RunCMake_TEST_OPTIONS)
+
 # Dev warnings should be on by default
 run_cmake(Wdev)
 
@@ -224,6 +245,7 @@ unset(RunCMake_TEST_OPTIONS)
 
 run_cmake_command(W_bad-arg1 ${CMAKE_COMMAND} -W)
 run_cmake_command(W_bad-arg2 ${CMAKE_COMMAND} -Wno-)
+run_cmake_command(W_bad-arg3 ${CMAKE_COMMAND} -Werror=)
 
 set(RunCMake_TEST_OPTIONS --debug-output)
 run_cmake(debug-output)
diff --git a/Tests/RunCMake/message/errormessage-result.txt b/Tests/RunCMake/CommandLine/W_bad-arg3-result.txt
index d00491f..d00491f 100644
--- a/Tests/RunCMake/message/errormessage-result.txt
+++ b/Tests/RunCMake/CommandLine/W_bad-arg3-result.txt
diff --git a/Tests/RunCMake/CommandLine/W_bad-arg3-stderr.txt b/Tests/RunCMake/CommandLine/W_bad-arg3-stderr.txt
new file mode 100644
index 0000000..cc643df
--- /dev/null
+++ b/Tests/RunCMake/CommandLine/W_bad-arg3-stderr.txt
@@ -0,0 +1,2 @@
+CMake Error: No warning name provided.
+CMake Error: Problem processing arguments. Aborting.
diff --git a/Tests/RunCMake/CommandLine/Werror_deprecated-result.txt b/Tests/RunCMake/CommandLine/Werror_deprecated-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/CommandLine/Werror_deprecated-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/CommandLine/Werror_deprecated-stderr.txt b/Tests/RunCMake/CommandLine/Werror_deprecated-stderr.txt
new file mode 100644
index 0000000..6acdc73
--- /dev/null
+++ b/Tests/RunCMake/CommandLine/Werror_deprecated-stderr.txt
@@ -0,0 +1,4 @@
+^CMake Deprecation Error at Werror_deprecated.cmake:1 \(message\):
+  Some deprecated warning
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/CommandLine/Werror_deprecated.cmake b/Tests/RunCMake/CommandLine/Werror_deprecated.cmake
new file mode 100644
index 0000000..3142b42
--- /dev/null
+++ b/Tests/RunCMake/CommandLine/Werror_deprecated.cmake
@@ -0,0 +1 @@
+message(DEPRECATION "Some deprecated warning")
diff --git a/Tests/RunCMake/CommandLine/Werror_dev-result.txt b/Tests/RunCMake/CommandLine/Werror_dev-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/CommandLine/Werror_dev-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/CommandLine/Werror_dev-stderr.txt b/Tests/RunCMake/CommandLine/Werror_dev-stderr.txt
new file mode 100644
index 0000000..590ec96
--- /dev/null
+++ b/Tests/RunCMake/CommandLine/Werror_dev-stderr.txt
@@ -0,0 +1,11 @@
+^CMake Error \(dev\) at Werror_dev.cmake:4 \(include\):
+  include\(\) given empty file name \(ignored\).
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
+This error is for project developers. Use -Wno-error=dev to suppress it.
+
+CMake Error \(dev\) at Werror_dev.cmake:7 \(message\):
+  Some author warning
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
+This error is for project developers. Use -Wno-error=dev to suppress it.$
diff --git a/Tests/RunCMake/CommandLine/Werror_dev.cmake b/Tests/RunCMake/CommandLine/Werror_dev.cmake
new file mode 100644
index 0000000..05f333a
--- /dev/null
+++ b/Tests/RunCMake/CommandLine/Werror_dev.cmake
@@ -0,0 +1,7 @@
+# with -Werror=dev this will also cause an (upgraded) AUTHOR_ERROR message,
+# checks that messages issued outside of the message command, by other CMake
+# commands, also are affected by -Werror=dev
+include("")
+
+# message command sets fatal occurred flag, so run it last
+message(AUTHOR_WARNING "Some author warning")
diff --git a/Tests/RunCMake/CommandLine/Wno-error_deprecated-stderr.txt b/Tests/RunCMake/CommandLine/Wno-error_deprecated-stderr.txt
new file mode 100644
index 0000000..0ed1698
--- /dev/null
+++ b/Tests/RunCMake/CommandLine/Wno-error_deprecated-stderr.txt
@@ -0,0 +1,4 @@
+^CMake Deprecation Warning at Wno-error_deprecated.cmake:2 \(message\):
+  Some deprecated warning
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/CommandLine/Wno-error_deprecated.cmake b/Tests/RunCMake/CommandLine/Wno-error_deprecated.cmake
new file mode 100644
index 0000000..676792a
--- /dev/null
+++ b/Tests/RunCMake/CommandLine/Wno-error_deprecated.cmake
@@ -0,0 +1,2 @@
+# This should still produce a warning when -Wno-error=deprecated is specified
+message(DEPRECATION "Some deprecated warning")
diff --git a/Tests/RunCMake/CommandLine/Wno-error_dev-stderr.txt b/Tests/RunCMake/CommandLine/Wno-error_dev-stderr.txt
new file mode 100644
index 0000000..dd22d55
--- /dev/null
+++ b/Tests/RunCMake/CommandLine/Wno-error_dev-stderr.txt
@@ -0,0 +1,11 @@
+^CMake Warning \(dev\) at Wno-error_dev.cmake:2 \(message\):
+  Some author warning
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Warning \(dev\) at Wno-error_dev.cmake:6 \(include\):
+  include\(\) given empty file name \(ignored\).
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
+This warning is for project developers.  Use -Wno-dev to suppress it.$
diff --git a/Tests/RunCMake/CommandLine/Wno-error_dev.cmake b/Tests/RunCMake/CommandLine/Wno-error_dev.cmake
new file mode 100644
index 0000000..b700c19
--- /dev/null
+++ b/Tests/RunCMake/CommandLine/Wno-error_dev.cmake
@@ -0,0 +1,7 @@
+# This should still produce a warning when -Wno-error=dev is specified
+message(AUTHOR_WARNING "Some author warning")
+
+# with -Wno-error=dev this will also cause an AUTHOR_WARNING message, checks
+# that messages issued outside of the message command, by other CMake commands,
+# also are affected by -Wno-error=dev
+include("")
diff --git a/Tests/RunCMake/message/RunCMakeTest.cmake b/Tests/RunCMake/message/RunCMakeTest.cmake
index 294dfbb..9489693 100644
--- a/Tests/RunCMake/message/RunCMakeTest.cmake
+++ b/Tests/RunCMake/message/RunCMakeTest.cmake
@@ -3,4 +3,8 @@ include(RunCMake)
 run_cmake(defaultmessage)
 run_cmake(nomessage)
 run_cmake(warnmessage)
-run_cmake(errormessage)
+# message command sets fatal occurred flag, so check each type of error
+
+# seperately
+run_cmake(errormessage_deprecated)
+run_cmake(errormessage_dev)
diff --git a/Tests/RunCMake/message/errormessage-stderr.txt b/Tests/RunCMake/message/errormessage-stderr.txt
deleted file mode 100644
index 49e7ca9..0000000
--- a/Tests/RunCMake/message/errormessage-stderr.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-CMake Deprecation Error at errormessage.cmake:4 \(message\):
-  This is an error
-Call Stack \(most recent call first\):
-  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/message/errormessage.cmake b/Tests/RunCMake/message/errormessage.cmake
deleted file mode 100644
index 7d3b779..0000000
--- a/Tests/RunCMake/message/errormessage.cmake
+++ /dev/null
@@ -1,4 +0,0 @@
-
-set(CMAKE_ERROR_DEPRECATED ON)
-
-message(DEPRECATION "This is an error")
diff --git a/Tests/RunCMake/message/errormessage_deprecated-result.txt b/Tests/RunCMake/message/errormessage_deprecated-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/message/errormessage_deprecated-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/message/errormessage_deprecated-stderr.txt b/Tests/RunCMake/message/errormessage_deprecated-stderr.txt
new file mode 100644
index 0000000..dd21c3b
--- /dev/null
+++ b/Tests/RunCMake/message/errormessage_deprecated-stderr.txt
@@ -0,0 +1,4 @@
+^CMake Deprecation Error at errormessage_deprecated.cmake:3 \(message\):
+  This is a deprecation error
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)$
diff --git a/Tests/RunCMake/message/errormessage_deprecated.cmake b/Tests/RunCMake/message/errormessage_deprecated.cmake
new file mode 100644
index 0000000..579275e
--- /dev/null
+++ b/Tests/RunCMake/message/errormessage_deprecated.cmake
@@ -0,0 +1,3 @@
+set(CMAKE_ERROR_DEPRECATED ON)
+
+message(DEPRECATION "This is a deprecation error")
diff --git a/Tests/RunCMake/message/errormessage_dev-result.txt b/Tests/RunCMake/message/errormessage_dev-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/message/errormessage_dev-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/message/errormessage_dev-stderr.txt b/Tests/RunCMake/message/errormessage_dev-stderr.txt
new file mode 100644
index 0000000..086b55c
--- /dev/null
+++ b/Tests/RunCMake/message/errormessage_dev-stderr.txt
@@ -0,0 +1,5 @@
+^CMake Error \(dev\) at errormessage_dev.cmake:3 \(message\):
+  This is a author error
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
+This error is for project developers. Use -Wno-error=dev to suppress it.$
diff --git a/Tests/RunCMake/message/errormessage_dev.cmake b/Tests/RunCMake/message/errormessage_dev.cmake
new file mode 100644
index 0000000..6ba1165
--- /dev/null
+++ b/Tests/RunCMake/message/errormessage_dev.cmake
@@ -0,0 +1,3 @@
+set(CMAKE_SUPPRESS_DEVELOPER_ERRORS OFF)
+
+message(AUTHOR_WARNING "This is a author error")