cmake: Teach --build mode to support multiple targets

Fixes: #16136

Help/command/build_command.rst

@@ -14,7 +14,7 @@ This is mainly intended for internal use by the :module:`CTest` module.
 
 Sets the given ``<variable>`` to a command-line string of the form::
 
- <cmake> --build . [--config <config>] [--target <target>] [-- -i]
+ <cmake> --build . [--config <config>] [--target <target>...] [-- -i]
 
 where ``<cmake>`` is the location of the :manual:`cmake(1)` command-line
 tool, and ``<config>`` and ``<target>`` are the values provided to the

Help/manual/cmake.1.rst

@@ -276,8 +276,8 @@ following options:
   The :envvar:`CMAKE_BUILD_PARALLEL_LEVEL` environment variable, if set,
   specifies a default parallel level when this option is not given.
 
-``--target <tgt>``
-  Build ``<tgt>`` instead of default targets.  May only be specified once.
+``--target <tgt>...``
+  Build ``<tgt>`` instead of default targets.  May be specified multiple times.
 
 ``--config <cfg>``
   For multi-configuration tools, choose configuration ``<cfg>``.

Help/release/dev/cmake-build-multiply-targets.rst

+cmake-build-multiply-targets
+----------------------------
+
+* The :manual:`cmake(1)` ``--build`` tool ``--target`` parameter gained support for
+  multiple targets, e.g. ``cmake --build . --target Library1 Library2``.

Source/CTest/cmCTestBuildAndTestHandler.cxx

@@ -256,7 +256,7 @@ int cmCTestBuildAndTestHandler::RunCMakeAndTest(std::string* outstring)
     }
     int retVal = cm.GetGlobalGenerator()->Build(
       cmake::NO_BUILD_PARALLEL_LEVEL, this->SourceDir, this->BinaryDir,
-      this->BuildProject, tar, output, this->BuildMakeProgram, config,
+      this->BuildProject, { tar }, output, this->BuildMakeProgram, config,
       !this->BuildNoClean, false, false, remainingTime);
     out << output;
     // if the build failed then return

Source/cmGlobalBorlandMakefileGenerator.cxx

@@ -53,15 +53,16 @@ void cmGlobalBorlandMakefileGenerator::GetDocumentation(
   entry.Brief = "Generates Borland makefiles.";
 }
 
-void cmGlobalBorlandMakefileGenerator::GenerateBuildCommand(
-  GeneratedMakeCommand& makeCommand, const std::string& makeProgram,
-  const std::string& projectName, const std::string& projectDir,
-  const std::string& targetName, const std::string& config, bool fast,
-  int /*jobs*/, bool verbose, std::vector<std::string> const& makeOptions)
+std::vector<cmGlobalGenerator::GeneratedMakeCommand>
+cmGlobalBorlandMakefileGenerator::GenerateBuildCommand(
+  const std::string& makeProgram, const std::string& projectName,
+  const std::string& projectDir, std::vector<std::string> const& targetNames,
+  const std::string& config, bool fast, int /*jobs*/, bool verbose,
+  std::vector<std::string> const& makeOptions)
 {
-  this->cmGlobalUnixMakefileGenerator3::GenerateBuildCommand(
-    makeCommand, makeProgram, projectName, projectDir, targetName, config,
-    fast, cmake::NO_BUILD_PARALLEL_LEVEL, verbose, makeOptions);
+  return this->cmGlobalUnixMakefileGenerator3::GenerateBuildCommand(
+    makeProgram, projectName, projectDir, targetNames, config, fast,
+    cmake::NO_BUILD_PARALLEL_LEVEL, verbose, makeOptions);
 }
 
 void cmGlobalBorlandMakefileGenerator::PrintBuildCommandAdvice(

Source/cmGlobalBorlandMakefileGenerator.h

@@ -46,15 +46,12 @@ public:
   bool AllowDeleteOnError() const override { return false; }
 
 protected:
-  void GenerateBuildCommand(GeneratedMakeCommand& makeCommand,
-                            const std::string& makeProgram,
-                            const std::string& projectName,
-                            const std::string& projectDir,
-                            const std::string& targetName,
-                            const std::string& config, bool fast, int jobs,
-                            bool verbose,
-                            std::vector<std::string> const& makeOptions =
-                              std::vector<std::string>()) override;
+  std::vector<GeneratedMakeCommand> GenerateBuildCommand(
+    const std::string& makeProgram, const std::string& projectName,
+    const std::string& projectDir, std::vector<std::string> const& targetNames,
+    const std::string& config, bool fast, int jobs, bool verbose,
+    std::vector<std::string> const& makeOptions =
+      std::vector<std::string>()) override;
 
   void PrintBuildCommandAdvice(std::ostream& os, int jobs) const override;
 };

Source/cmGlobalGenerator.cxx

@@ -1763,9 +1763,9 @@ int cmGlobalGenerator::TryCompile(int jobs, const std::string& srcdir,
                                         this->FirstTimeProgress);
   }
 
-  std::string newTarget;
+  std::vector<std::string> newTarget = {};
   if (!target.empty()) {
-    newTarget += target;
+    newTarget = { target };
   }
   std::string config =
     mf->GetSafeDefinition("CMAKE_TRY_COMPILE_CONFIGURATION");
@@ -1773,14 +1773,16 @@ int cmGlobalGenerator::TryCompile(int jobs, const std::string& srcdir,
                      config, false, fast, false, this->TryCompileTimeout);
 }
 
-void cmGlobalGenerator::GenerateBuildCommand(
-  GeneratedMakeCommand& makeCommand, const std::string& /*unused*/,
+std::vector<cmGlobalGenerator::GeneratedMakeCommand>
+cmGlobalGenerator::GenerateBuildCommand(
   const std::string& /*unused*/, const std::string& /*unused*/,
-  const std::string& /*unused*/, const std::string& /*unused*/,
-  bool /*unused*/, int /*unused*/, bool /*unused*/,
-  std::vector<std::string> const& /*unused*/)
+  const std::string& /*unused*/, std::vector<std::string> const& /*unused*/,
+  const std::string& /*unused*/, bool /*unused*/, int /*unused*/,
+  bool /*unused*/, std::vector<std::string> const& /*unused*/)
 {
+  GeneratedMakeCommand makeCommand;
   makeCommand.Add("cmGlobalGenerator::GenerateBuildCommand not implemented");
+  return { std::move(makeCommand) };
 }
 
 void cmGlobalGenerator::PrintBuildCommandAdvice(std::ostream& /*os*/,
@@ -1790,15 +1792,13 @@ void cmGlobalGenerator::PrintBuildCommandAdvice(std::ostream& /*os*/,
   // they do not support certain build command line options
 }
 
-int cmGlobalGenerator::Build(int jobs, const std::string& /*unused*/,
-                             const std::string& bindir,
-                             const std::string& projectName,
-                             const std::string& target, std::string& output,
-                             const std::string& makeCommandCSTR,
-                             const std::string& config, bool clean, bool fast,
-                             bool verbose, cmDuration timeout,
-                             cmSystemTools::OutputOption outputflag,
-                             std::vector<std::string> const& nativeOptions)
+int cmGlobalGenerator::Build(
+  int jobs, const std::string& /*unused*/, const std::string& bindir,
+  const std::string& projectName, const std::vector<std::string>& targets,
+  std::string& output, const std::string& makeCommandCSTR,
+  const std::string& config, bool clean, bool fast, bool verbose,
+  cmDuration timeout, cmSystemTools::OutputOption outputflag,
+  std::vector<std::string> const& nativeOptions)
 {
   bool hideconsole = cmSystemTools::GetRunCommandHideConsole();
 
@@ -1819,32 +1819,37 @@ int cmGlobalGenerator::Build(int jobs, const std::string& /*unused*/,
     return 1;
   }
 
-  int retVal;
+  int retVal = 0;
   cmSystemTools::SetRunCommandHideConsole(true);
   std::string outputBuffer;
   std::string* outputPtr = &outputBuffer;
 
-  GeneratedMakeCommand makeCommand;
-  this->GenerateBuildCommand(makeCommand, makeCommandCSTR, projectName, bindir,
-                             target, config, fast, jobs, verbose,
-                             nativeOptions);
+  std::vector<GeneratedMakeCommand> makeCommand =
+    this->GenerateBuildCommand(makeCommandCSTR, projectName, bindir, targets,
+                               config, fast, jobs, verbose, nativeOptions);
 
   // Workaround to convince some commands to produce output.
   if (outputflag == cmSystemTools::OUTPUT_PASSTHROUGH &&
-      makeCommand.RequiresOutputForward) {
+      makeCommand.back().RequiresOutputForward) {
     outputflag = cmSystemTools::OUTPUT_FORWARD;
   }
 
   // should we do a clean first?
   if (clean) {
-    GeneratedMakeCommand cleanCommand;
-    this->GenerateBuildCommand(cleanCommand, makeCommandCSTR, projectName,
-                               bindir, "clean", config, fast, jobs, verbose);
+    std::vector<GeneratedMakeCommand> cleanCommand =
+      this->GenerateBuildCommand(makeCommandCSTR, projectName, bindir,
+                                 { "clean" }, config, fast, jobs, verbose);
     output += "\nRun Clean Command:";
-    output += cleanCommand.Printable();
+    output += cleanCommand.front().Printable();
     output += "\n";
-
-    if (!cmSystemTools::RunSingleCommand(cleanCommand.PrimaryCommand,
+    if (cleanCommand.size() != 1) {
+      this->GetCMakeInstance()->IssueMessage(MessageType::INTERNAL_ERROR,
+                                             "The generator did not produce "
+                                             "exactly one command for the "
+                                             "'clean' target");
+      return 1;
+    }
+    if (!cmSystemTools::RunSingleCommand(cleanCommand.front().PrimaryCommand,
                                          outputPtr, outputPtr, &retVal,
                                          nullptr, outputflag, timeout)) {
       cmSystemTools::SetRunCommandHideConsole(hideconsole);
@@ -1858,25 +1863,33 @@ int cmGlobalGenerator::Build(int jobs, const std::string& /*unused*/,
   }
 
   // now build
-  std::string makeCommandStr = makeCommand.Printable();
+  std::string makeCommandStr;
   output += "\nRun Build Command(s):";
-  output += makeCommandStr;
-  output += "\n";
 
-  if (!cmSystemTools::RunSingleCommand(makeCommand.PrimaryCommand, outputPtr,
-                                       outputPtr, &retVal, nullptr, outputflag,
-                                       timeout)) {
-    cmSystemTools::SetRunCommandHideConsole(hideconsole);
-    cmSystemTools::Error(
-      "Generator: execution of make failed. Make command was: " +
-      makeCommandStr);
-    output += *outputPtr;
-    output += "\nGenerator: execution of make failed. Make command was: " +
-      makeCommandStr + "\n";
+  for (auto command = makeCommand.begin(); command != makeCommand.end();
+       ++command) {
+    makeCommandStr = command->Printable();
+    if (command != makeCommand.end()) {
+      makeCommandStr += " && ";
+    }
 
-    return 1;
+    output += makeCommandStr;
+    if (!cmSystemTools::RunSingleCommand(command->PrimaryCommand, outputPtr,
+                                         outputPtr, &retVal, nullptr,
+                                         outputflag, timeout)) {
+      cmSystemTools::SetRunCommandHideConsole(hideconsole);
+      cmSystemTools::Error(
+        "Generator: execution of make failed. Make command was: " +
+        makeCommandStr);
+      output += *outputPtr;
+      output += "\nGenerator: execution of make failed. Make command was: " +
+        makeCommandStr + "\n";
+
+      return 1;
+    }
+    output += *outputPtr;
   }
-  output += *outputPtr;
+  output += "\n";
   cmSystemTools::SetRunCommandHideConsole(hideconsole);
 
   // The OpenWatcom tools do not return an error code when a link

Source/cmGlobalGenerator.h

@@ -13,6 +13,7 @@
 #include <utility>
 #include <vector>
 
+#include "cmAlgorithms.h"
 #include "cmCustomCommandLines.h"
 #include "cmDuration.h"
 #include "cmExportSetMap.h"
@@ -203,10 +204,10 @@ public:
    */
   int Build(
     int jobs, const std::string& srcdir, const std::string& bindir,
-    const std::string& projectName, const std::string& targetName,
-    std::string& output, const std::string& makeProgram,
-    const std::string& config, bool clean, bool fast, bool verbose,
-    cmDuration timeout,
+    const std::string& projectName,
+    std::vector<std::string> const& targetNames, std::string& output,
+    const std::string& makeProgram, const std::string& config, bool clean,
+    bool fast, bool verbose, cmDuration timeout,
     cmSystemTools::OutputOption outputflag = cmSystemTools::OUTPUT_NONE,
     std::vector<std::string> const& nativeOptions =
       std::vector<std::string>());
@@ -221,11 +222,10 @@ public:
   {
   };
 
-  virtual void GenerateBuildCommand(
-    GeneratedMakeCommand& makeCommand, const std::string& makeProgram,
-    const std::string& projectName, const std::string& projectDir,
-    const std::string& targetName, const std::string& config, bool fast,
-    int jobs, bool verbose,
+  virtual std::vector<GeneratedMakeCommand> GenerateBuildCommand(
+    const std::string& makeProgram, const std::string& projectName,
+    const std::string& projectDir, std::vector<std::string> const& targetNames,
+    const std::string& config, bool fast, int jobs, bool verbose,
     std::vector<std::string> const& makeOptions = std::vector<std::string>());
 
   virtual void PrintBuildCommandAdvice(std::ostream& os, int jobs) const;

Source/cmGlobalGhsMultiGenerator.cxx

@@ -369,12 +369,14 @@ void cmGlobalGhsMultiGenerator::OutputTopLevelProject(
   fout.Close();
 }
 
-void cmGlobalGhsMultiGenerator::GenerateBuildCommand(
-  GeneratedMakeCommand& makeCommand, const std::string& makeProgram,
-  const std::string& projectName, const std::string& projectDir,
-  const std::string& targetName, const std::string& /*config*/, bool /*fast*/,
-  int jobs, bool /*verbose*/, std::vector<std::string> const& makeOptions)
+std::vector<cmGlobalGenerator::GeneratedMakeCommand>
+cmGlobalGhsMultiGenerator::GenerateBuildCommand(
+  const std::string& makeProgram, const std::string& projectName,
+  const std::string& projectDir, std::vector<std::string> const& targetNames,
+  const std::string& /*config*/, bool /*fast*/, int jobs, bool /*verbose*/,
+  std::vector<std::string> const& makeOptions)
 {
+  GeneratedMakeCommand makeCommand = {};
   const char* gbuild =
     this->CMakeInstance->GetCacheDefinition("CMAKE_MAKE_PROGRAM");
   makeCommand.Add(this->SelectMakeProgram(makeProgram, (std::string)gbuild));
@@ -400,17 +402,23 @@ void cmGlobalGhsMultiGenerator::GenerateBuildCommand(
   }
 
   makeCommand.Add("-top", proj);
-  if (!targetName.empty()) {
-    if (targetName == "clean") {
+  if (!targetNames.empty()) {
+    if (std::find(targetNames.begin(), targetNames.end(), "clean") !=
+        targetNames.end()) {
       makeCommand.Add("-clean");
     } else {
-      if (targetName.compare(targetName.size() - 4, 4, ".gpj") == 0) {
-        makeCommand.Add(targetName);
-      } else {
-        makeCommand.Add(targetName + ".gpj");
+      for (const auto& tname : targetNames) {
+        if (!tname.empty()) {
+          if (tname.compare(tname.size() - 4, 4, ".gpj") == 0) {
+            makeCommand.Add(tname);
+          } else {
+            makeCommand.Add(tname + ".gpj");
+          }
+        }
       }
     }
   }
+  return { makeCommand };
 }
 
 void cmGlobalGhsMultiGenerator::WriteMacros(std::ostream& fout)

Source/cmGlobalGhsMultiGenerator.h

@@ -88,15 +88,12 @@ public:
 
 protected:
   void Generate() override;
-  void GenerateBuildCommand(GeneratedMakeCommand& makeCommand,
-                            const std::string& makeProgram,
-                            const std::string& projectName,
-                            const std::string& projectDir,
-                            const std::string& targetName,
-                            const std::string& config, bool fast, int jobs,
-                            bool verbose,
-                            std::vector<std::string> const& makeOptions =
-                              std::vector<std::string>()) override;
+  std::vector<GeneratedMakeCommand> GenerateBuildCommand(
+    const std::string& makeProgram, const std::string& projectName,
+    const std::string& projectDir, std::vector<std::string> const& targetNames,
+    const std::string& config, bool fast, int jobs, bool verbose,
+    std::vector<std::string> const& makeOptions =
+      std::vector<std::string>()) override;
 
 private:
   void GetToolset(cmMakefile* mf, std::string& tsd, const std::string& ts);

Source/cmGlobalJOMMakefileGenerator.cxx

@@ -54,11 +54,12 @@ void cmGlobalJOMMakefileGenerator::PrintCompilerAdvice(
   this->cmGlobalUnixMakefileGenerator3::PrintCompilerAdvice(os, lang, envVar);
 }
 
-void cmGlobalJOMMakefileGenerator::GenerateBuildCommand(
-  GeneratedMakeCommand& makeCommand, const std::string& makeProgram,
-  const std::string& projectName, const std::string& projectDir,
-  const std::string& targetName, const std::string& config, bool fast,
-  int jobs, bool verbose, std::vector<std::string> const& makeOptions)
+std::vector<cmGlobalGenerator::GeneratedMakeCommand>
+cmGlobalJOMMakefileGenerator::GenerateBuildCommand(
+  const std::string& makeProgram, const std::string& projectName,
+  const std::string& projectDir, std::vector<std::string> const& targetNames,
+  const std::string& config, bool fast, int jobs, bool verbose,
+  std::vector<std::string> const& makeOptions)
 {
   std::vector<std::string> jomMakeOptions;
 
@@ -75,7 +76,7 @@ void cmGlobalJOMMakefileGenerator::GenerateBuildCommand(
     jobs = cmake::NO_BUILD_PARALLEL_LEVEL;
   }
 
-  cmGlobalUnixMakefileGenerator3::GenerateBuildCommand(
-    makeCommand, makeProgram, projectName, projectDir, targetName, config,
-    fast, jobs, verbose, jomMakeOptions);
+  return cmGlobalUnixMakefileGenerator3::GenerateBuildCommand(
+    makeProgram, projectName, projectDir, targetNames, config, fast, jobs,
+    verbose, jomMakeOptions);
 }

Source/cmGlobalJOMMakefileGenerator.h

@@ -40,15 +40,12 @@ public:
                       bool optional) override;
 
 protected:
-  void GenerateBuildCommand(GeneratedMakeCommand& makeCommand,
-                            const std::string& makeProgram,
-                            const std::string& projectName,
-                            const std::string& projectDir,
-                            const std::string& targetName,
-                            const std::string& config, bool fast, int jobs,
-                            bool verbose,
-                            std::vector<std::string> const& makeOptions =
-                              std::vector<std::string>()) override;
+  std::vector<GeneratedMakeCommand> GenerateBuildCommand(
+    const std::string& makeProgram, const std::string& projectName,
+    const std::string& projectDir, std::vector<std::string> const& targetNames,
+    const std::string& config, bool fast, int jobs, bool verbose,
+    std::vector<std::string> const& makeOptions =
+      std::vector<std::string>()) override;
 
 private:
   void PrintCompilerAdvice(std::ostream& os, std::string const& lang,

Source/cmGlobalNMakeMakefileGenerator.cxx

@@ -54,11 +54,12 @@ void cmGlobalNMakeMakefileGenerator::PrintCompilerAdvice(
   this->cmGlobalUnixMakefileGenerator3::PrintCompilerAdvice(os, lang, envVar);
 }
 
-void cmGlobalNMakeMakefileGenerator::GenerateBuildCommand(
-  GeneratedMakeCommand& makeCommand, const std::string& makeProgram,
-  const std::string& projectName, const std::string& projectDir,
-  const std::string& targetName, const std::string& config, bool fast,
-  int /*jobs*/, bool verbose, std::vector<std::string> const& makeOptions)
+std::vector<cmGlobalGenerator::GeneratedMakeCommand>
+cmGlobalNMakeMakefileGenerator::GenerateBuildCommand(
+  const std::string& makeProgram, const std::string& projectName,
+  const std::string& projectDir, std::vector<std::string> const& targetNames,
+  const std::string& config, bool fast, int /*jobs*/, bool verbose,
+  std::vector<std::string> const& makeOptions)
 {
   std::vector<std::string> nmakeMakeOptions;
 
@@ -68,9 +69,9 @@ void cmGlobalNMakeMakefileGenerator::GenerateBuildCommand(
   nmakeMakeOptions.insert(nmakeMakeOptions.end(), makeOptions.begin(),
                           makeOptions.end());
 
-  this->cmGlobalUnixMakefileGenerator3::GenerateBuildCommand(
-    makeCommand, makeProgram, projectName, projectDir, targetName, config,
-    fast, cmake::NO_BUILD_PARALLEL_LEVEL, verbose, nmakeMakeOptions);
+  return this->cmGlobalUnixMakefileGenerator3::GenerateBuildCommand(
+    makeProgram, projectName, projectDir, targetNames, config, fast,
+    cmake::NO_BUILD_PARALLEL_LEVEL, verbose, nmakeMakeOptions);
 }
 
 void cmGlobalNMakeMakefileGenerator::PrintBuildCommandAdvice(std::ostream& os,

Source/cmGlobalNMakeMakefileGenerator.h

@@ -45,15 +45,12 @@ public:
                       bool optional) override;
 
 protected:
-  void GenerateBuildCommand(GeneratedMakeCommand& makeCommand,
-                            const std::string& makeProgram,
-                            const std::string& projectName,
-                            const std::string& projectDir,
-                            const std::string& targetName,
-                            const std::string& config, bool fast, int jobs,
-                            bool verbose,
-                            std::vector<std::string> const& makeOptions =
-                              std::vector<std::string>()) override;
+  std::vector<GeneratedMakeCommand> GenerateBuildCommand(
+    const std::string& makeProgram, const std::string& projectName,
+    const std::string& projectDir, std::vector<std::string> const& targetNames,
+    const std::string& config, bool fast, int jobs, bool verbose,
+    std::vector<std::string> const& makeOptions =
+      std::vector<std::string>()) override;
 
   void PrintBuildCommandAdvice(std::ostream& os, int jobs) const override;
 

Source/cmGlobalNinjaGenerator.cxx

@@ -677,12 +677,15 @@ void cmGlobalNinjaGenerator::EnableLanguage(
 //   cmGlobalXCodeGenerator
 // Called by:
 //   cmGlobalGenerator::Build()
-void cmGlobalNinjaGenerator::GenerateBuildCommand(
-  GeneratedMakeCommand& makeCommand, const std::string& makeProgram,
-  const std::string& /*projectName*/, const std::string& /*projectDir*/,
-  const std::string& targetName, const std::string& /*config*/, bool /*fast*/,
-  int jobs, bool verbose, std::vector<std::string> const& makeOptions)
-{
+std::vector<cmGlobalGenerator::GeneratedMakeCommand>
+cmGlobalNinjaGenerator::GenerateBuildCommand(
+  const std::string& makeProgram, const std::string& /*projectName*/,
+  const std::string& /*projectDir*/,
+  std::vector<std::string> const& targetNames, const std::string& /*config*/,
+  bool /*fast*/, int jobs, bool verbose,
+  std::vector<std::string> const& makeOptions)
+{
+  GeneratedMakeCommand makeCommand;
   makeCommand.Add(this->SelectMakeProgram(makeProgram));
 
   if (verbose) {
@@ -695,13 +698,16 @@ void cmGlobalNinjaGenerator::GenerateBuildCommand(
   }
 
   makeCommand.Add(makeOptions.begin(), makeOptions.end());
-  if (!targetName.empty()) {
-    if (targetName == "clean") {
-      makeCommand.Add("-t", "clean");
-    } else {
-      makeCommand.Add(targetName);
+  for (const auto& tname : targetNames) {
+    if (!tname.empty()) {
+      if (tname == "clean") {
+        makeCommand.Add("-t", "clean");
+      } else {
+        makeCommand.Add(tname);
+      }
     }
   }
+  return { std::move(makeCommand) };
 }
 
 // Non-virtual public methods.

Source/cmGlobalNinjaGenerator.h

@@ -200,15 +200,12 @@ public:
   void EnableLanguage(std::vector<std::string> const& languages,
                       cmMakefile* mf, bool optional) override;
 
-  void GenerateBuildCommand(GeneratedMakeCommand& makeCommand,
-                            const std::string& makeProgram,
-                            const std::string& projectName,
-                            const std::string& projectDir,
-                            const std::string& targetName,
-                            const std::string& config, bool fast, int jobs,
-                            bool verbose,
-                            std::vector<std::string> const& makeOptions =
-                              std::vector<std::string>()) override;
+  std::vector<GeneratedMakeCommand> GenerateBuildCommand(
+    const std::string& makeProgram, const std::string& projectName,
+    const std::string& projectDir, std::vector<std::string> const& targetNames,
+    const std::string& config, bool fast, int jobs, bool verbose,
+    std::vector<std::string> const& makeOptions =
+      std::vector<std::string>()) override;
 
   // Setup target names
   const char* GetAllTargetName() const override { return "all"; }

Source/cmGlobalUnixMakefileGenerator3.cxx

@@ -494,11 +494,13 @@ void cmGlobalUnixMakefileGenerator3::WriteDirectoryRules2(
   this->WriteDirectoryRule2(ruleFileStream, lg, "preinstall", true, true);
 }
 
-void cmGlobalUnixMakefileGenerator3::GenerateBuildCommand(
-  GeneratedMakeCommand& makeCommand, const std::string& makeProgram,
-  const std::string& /*projectName*/, const std::string& /*projectDir*/,
-  const std::string& targetName, const std::string& /*config*/, bool fast,
-  int jobs, bool verbose, std::vector<std::string> const& makeOptions)
+std::vector<cmGlobalGenerator::GeneratedMakeCommand>
+cmGlobalUnixMakefileGenerator3::GenerateBuildCommand(
+  const std::string& makeProgram, const std::string& /*projectName*/,
+  const std::string& /*projectDir*/,
+  std::vector<std::string> const& targetNames, const std::string& /*config*/,
+  bool fast, int jobs, bool verbose,
+  std::vector<std::string> const& makeOptions)
 {
   std::unique_ptr<cmMakefile> mfu;
   cmMakefile* mf;
@@ -515,6 +517,8 @@ void cmGlobalUnixMakefileGenerator3::GenerateBuildCommand(
     mf = mfu.get();
   }
 
+  GeneratedMakeCommand makeCommand;
+
   // Make it possible to set verbosity also from command line
   if (verbose) {
     makeCommand.Add(cmSystemTools::GetCMakeCommand());
@@ -532,17 +536,19 @@ void cmGlobalUnixMakefileGenerator3::GenerateBuildCommand(
   }
 
   makeCommand.Add(makeOptions.begin(), makeOptions.end());
-  if (!targetName.empty()) {
-    std::string tname = targetName;
-    if (fast) {
-      tname += "/fast";
+  for (auto tname : targetNames) {
+    if (!tname.empty()) {
+      if (fast) {
+        tname += "/fast";
+      }
+      tname =