Merge topic 'ninja-cmdLineLimit'

6332ba5a Ninja: also consider rule command length for rsp file
0c42faf6 Ninja: also consider variables when checking command line length

Source/cmGlobalNinjaGenerator.cxx

@@ -160,34 +160,35 @@ void cmGlobalNinjaGenerator::WriteBuild(std::ostream& os,
 
   arguments << "\n";
 
-
-  cmOStringStream builds;
+  cmOStringStream build;
 
   // Write outputs files.
-  builds << "build";
+  build << "build";
   for(cmNinjaDeps::const_iterator i = outputs.begin();
-      i != outputs.end();
-      ++i)
-    builds << " " << EncodeIdent(EncodePath(*i), os);
-  builds << ":";
-
+      i != outputs.end(); ++i)
+    build << " " << EncodeIdent(EncodePath(*i), os);
+  build << ":";
 
   // Write the rule.
-  builds << " " << rule;
+  build << " " << rule;
+
+  // Write the variables bound to this build statement.
+  cmOStringStream variable_assignments;
+  for(cmNinjaVars::const_iterator i = variables.begin();
+      i != variables.end(); ++i)
+    cmGlobalNinjaGenerator::WriteVariable(variable_assignments,
+                                          i->first, i->second, "", 1);
 
   // check if a response file rule should be used
+  std::string buildstr = build.str();
+  const std::string assignments = variable_assignments.str();
   const std::string args = arguments.str();
-  if (cmdLineLimit > 0 &&
-       (args.size() + + builds.str().size()) > (size_t)cmdLineLimit)
-    builds << "_RSPFILE";
+  if (cmdLineLimit > 0
+      && args.size() + buildstr.size() + assignments.size()
+         > (size_t) cmdLineLimit)
+    buildstr += "_RSPFILE";
 
-  os << builds.str() << args;
-
-  // Write the variables bound to this build statement.
-  for(cmNinjaVars::const_iterator i = variables.begin();
-      i != variables.end();
-      ++i)
-    cmGlobalNinjaGenerator::WriteVariable(os, i->first, i->second, "", 1);
+  os << buildstr << args << assignments;
 }
 
 void cmGlobalNinjaGenerator::WritePhonyBuild(std::ostream& os,
@@ -556,6 +557,8 @@ void cmGlobalNinjaGenerator::AddRule(const std::string& name,
                                     rspfile,
                                     restat,
                                     generator);
+
+  this->RuleCmdLength[name] = command.size();
 }
 
 bool cmGlobalNinjaGenerator::HasRule(const std::string &name)

Source/cmGlobalNinjaGenerator.h

@@ -319,6 +319,8 @@ private:
 
   std::string ninjaCmd() const;
 
+  int GetRuleCmdLength(const std::string& name) { return RuleCmdLength[name]; }
+
 private:
   /// The file containing the build statement. (the relation ship of the
   /// compilation DAG).
@@ -335,6 +337,9 @@ private:
   /// The set of rules added to the generated build system.
   RulesSetType Rules;
 
+  /// Length of rule command, used by rsp file evaluation
+  std::map<std::string, int> RuleCmdLength;
+
   /// The set of dependencies to add to the "all" target.
   cmNinjaDeps AllDependencies;
 

Source/cmLocalNinjaGenerator.cxx

@@ -272,7 +272,7 @@ std::string cmLocalNinjaGenerator::BuildCommandLine(
   // don't use POST_BUILD.
   if (cmdLines.empty())
 #ifdef _WIN32
-    return "cd.";
+    return "cd .";
 #else
     return ":";
 #endif

Source/cmNinjaNormalTargetGenerator.cxx

@@ -480,7 +480,8 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
 
   int cmdLineLimit;
 #ifdef _WIN32
-  cmdLineLimit = 8000;
+  cmdLineLimit = 8000 - this->GetGlobalGenerator()->
+                                 GetRuleCmdLength(this->LanguageLinkerRule());
 #else
   cmdLineLimit = -1; // TODO
 #endif