install(DIRECTORY): Add MESSAGE_NEVER option to avoid output (#13761)

Installing large directories, e.g., the output of a doxygen run, prints
one line per file resulting in too much noise in the build output.  Add
an option to the install(DIRECTORY) command to not print anything upon
make install.

Extend the RunCMake.install test with cases covering MESSAGE_NEVER
behavior of the install(DIRECTORY) command.

Suggested-by: Stefan Eilemann <Stefan.Eilemann@epfl.ch>

Help/command/install.rst

@@ -196,7 +196,7 @@ Installing Directories
   install(DIRECTORY dirs... DESTINATION <dir>
           [FILE_PERMISSIONS permissions...]
           [DIRECTORY_PERMISSIONS permissions...]
-          [USE_SOURCE_PERMISSIONS] [OPTIONAL]
+          [USE_SOURCE_PERMISSIONS] [OPTIONAL] [MESSAGE_NEVER]
           [CONFIGURATIONS [Debug|Release|...]]
           [COMPONENT <component>] [FILES_MATCHING]
           [[PATTERN <pattern> | REGEX <regex>]
@@ -219,6 +219,8 @@ permissions specified in the ``FILES`` form of the command, and the
 directories will be given the default permissions specified in the
 ``PROGRAMS`` form of the command.
 
+The ``MESSAGE_NEVER`` option disables file installation status output.
+
 Installation of directories may be controlled with fine granularity
 using the ``PATTERN`` or ``REGEX`` options.  These "match" options specify a
 globbing pattern or regular expression to match directories or files

Help/release/dev/install-messages.rst

@@ -1,5 +1,8 @@
 install-messages
 ----------------
 
+* The :command:`install` command learned a ``MESSAGE_NEVER`` option
+  to avoid output during installation.
+
 * The :variable:`CMAKE_INSTALL_MESSAGE` variable was introduced to
   optionally reduce output installation.

Source/cmInstallCommand.cxx

@@ -917,6 +917,7 @@ cmInstallCommand::HandleDirectoryMode(std::vector<std::string> const& args)
   Doing doing = DoingDirs;
   bool in_match_mode = false;
   bool optional = false;
+  bool message_never = false;
   std::vector<std::string> dirs;
   const char* destination = 0;
   std::string permissions_file;
@@ -955,6 +956,21 @@ cmInstallCommand::HandleDirectoryMode(std::vector<std::string> const& args)
       optional = true;
       doing = DoingNone;
       }
+    else if(args[i] == "MESSAGE_NEVER")
+      {
+      if(in_match_mode)
+        {
+        cmOStringStream e;
+        e << args[0] << " does not allow \""
+          << args[i] << "\" after PATTERN or REGEX.";
+        this->SetError(e.str());
+        return false;
+        }
+
+      // Mark the rule as quiet.
+      message_never = true;
+      doing = DoingNone;
+      }
     else if(args[i] == "PATTERN")
       {
       // Switch to a new pattern match rule.
@@ -1215,7 +1231,7 @@ cmInstallCommand::HandleDirectoryMode(std::vector<std::string> const& args)
     }
 
   cmInstallGenerator::MessageLevel message =
-    cmInstallGenerator::SelectMessageLevel(this->Makefile);
+    cmInstallGenerator::SelectMessageLevel(this->Makefile, message_never);
 
   // Create the directory install generator.
   this->Makefile->AddInstallGenerator(

Source/cmInstallGenerator.cxx

@@ -193,8 +193,12 @@ std::string cmInstallGenerator::GetInstallDestination() const
 
 //----------------------------------------------------------------------------
 cmInstallGenerator::MessageLevel
-cmInstallGenerator::SelectMessageLevel(cmMakefile* mf)
+cmInstallGenerator::SelectMessageLevel(cmMakefile* mf, bool never)
 {
+  if(never)
+    {
+    return MessageNever;
+    }
   std::string m = mf->GetSafeDefinition("CMAKE_INSTALL_MESSAGE");
   if(m == "ALWAYS")
     {

Source/cmInstallGenerator.h

@@ -60,8 +60,8 @@ public:
   /** Test if this generator installs something for a given configuration.  */
   bool InstallsForConfig(const std::string& config);
 
-  /** Select message level from CMAKE_INSTALL_MESSAGE.  */
-  static MessageLevel SelectMessageLevel(cmMakefile* mf);
+  /** Select message level from CMAKE_INSTALL_MESSAGE or 'never'.  */
+  static MessageLevel SelectMessageLevel(cmMakefile* mf, bool never = false);
 
 protected:
   virtual void GenerateScript(std::ostream& os);

Tests/RunCMake/install/DIRECTORY-MESSAGE_NEVER-check.cmake

@@ -0,0 +1,13 @@
+file(REMOVE_RECURSE ${RunCMake_TEST_BINARY_DIR}/prefix)
+execute_process(COMMAND ${CMAKE_COMMAND} -P ${RunCMake_TEST_BINARY_DIR}/cmake_install.cmake
+  OUTPUT_VARIABLE out ERROR_VARIABLE err)
+if(out MATCHES "-- Installing: [^\n]*prefix/dir")
+  string(REGEX REPLACE "\n" "\n  " out "  ${out}")
+  set(RunCMake_TEST_FAILED
+    "${RunCMake_TEST_FAILED}Installation output was not quiet:\n${out}")
+endif()
+set(f ${RunCMake_TEST_BINARY_DIR}/prefix/dir/empty.txt)
+if(NOT EXISTS "${f}")
+  set(RunCMake_TEST_FAILED
+    "${RunCMake_TEST_FAILED}File was not installed:\n  ${f}\n")
+endif()

Tests/RunCMake/install/DIRECTORY-MESSAGE_NEVER.cmake

@@ -0,0 +1,3 @@
+set(CMAKE_INSTALL_MESSAGE "ALWAYS")
+set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/prefix")
+install(DIRECTORY dir/ DESTINATION dir MESSAGE_NEVER)

Tests/RunCMake/install/DIRECTORY-PATTERN-MESSAGE_NEVER-result.txt

@@ -0,0 +1 @@
+1

Tests/RunCMake/install/DIRECTORY-PATTERN-MESSAGE_NEVER-stderr.txt

@@ -0,0 +1,4 @@
+CMake Error at DIRECTORY-PATTERN-MESSAGE_NEVER.cmake:[0-9]+ \(install\):
+  install DIRECTORY does not allow "MESSAGE_NEVER" after PATTERN or REGEX.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)

Tests/RunCMake/install/DIRECTORY-PATTERN-MESSAGE_NEVER.cmake

@@ -0,0 +1 @@
+install(DIRECTORY src DESTINATION src PATTERN *.txt MESSAGE_NEVER)

Tests/RunCMake/install/RunCMakeTest.cmake

@@ -1,4 +1,6 @@
 include(RunCMake)
+run_cmake(DIRECTORY-MESSAGE_NEVER)
+run_cmake(DIRECTORY-PATTERN-MESSAGE_NEVER)
 run_cmake(DIRECTORY-message)
 run_cmake(DIRECTORY-message-lazy)
 run_cmake(SkipInstallRulesWarning)