FIX: fix the problem where a target is a single character and nmake gets confused and add a test for it

Source/cmSystemTools.cxx

@@ -426,15 +426,18 @@ bool cmSystemTools::RunSingleCommand(
     {
     verbose = false;
     }
+  std::string argsTemp;
+  std::string program;
+  cmSystemTools::SplitProgramFromArgs(command, program, argsTemp);
+  std::vector<cmStdString> args = cmSystemTools::ParseArguments(argsTemp.c_str());
 
-  std::vector<cmStdString> args = cmSystemTools::ParseArguments(command);
+  if(program.size() < 1)
-
-  if(args.size() < 1)
     {
     return false;
     }
   
   std::vector<const char*> argv;
+  argv.push_back(program.c_str());
   for(std::vector<cmStdString>::const_iterator a = args.begin();
       a != args.end(); ++a)
     {

Tests/Complex/Executable/CMakeLists.txt

@@ -11,7 +11,7 @@ LINK_DIRECTORIES(${Complex_BINARY_DIR}/../../Source/kwsys)
 SET(COMPLEX_LIBS CMakeTestLibrary;CMakeTestLibraryShared;CMakeTestCLibraryShared)
 LINK_LIBRARIES(${COMPLEX_LIBS})
 
-
+ADD_EXECUTABLE(A A.cxx)
 ADD_EXECUTABLE(complex complex)
 ADD_EXECUTABLE(complex.file complex.file.cxx)
 IF (UNIX)

Tests/Complex/Executable/complex.cxx

@@ -111,6 +111,34 @@ int main()
   lib += CMAKE_INTDIR;
   lib += "/";
 #endif
+  std::string exe = lib;
+
+  // Test a single character executable to test a: in makefiles
+  exe += "A";
+  exe += cmSystemTools::GetExecutableExtension();
+  int ret;
+  std::string errorMessage;
+  if(cmSystemTools::RunSingleCommand(exe.c_str(), 0, &ret))
+    {
+    if(ret != 10)
+      {
+      errorMessage += exe;
+      errorMessage += " did not return 10";
+      }
+    }
+  else
+    {
+    errorMessage += exe;
+    errorMessage += ": failed to run.";
+    }
+  if(errorMessage.size())
+    {
+    cmFailed(errorMessage.c_str());
+    }
+  else
+    {
+    cmPassed("run Single Character executable A returned 10 as expected.");
+    }
   
   lib += cmDynamicLoader::LibPrefix();
   lib += "CMakeTestModule";

Tests/ComplexOneConfig/Executable/CMakeLists.txt

@@ -11,7 +11,7 @@ LINK_DIRECTORIES(${Complex_BINARY_DIR}/../../Source/kwsys)
 SET(COMPLEX_LIBS CMakeTestLibrary;CMakeTestLibraryShared;CMakeTestCLibraryShared)
 LINK_LIBRARIES(${COMPLEX_LIBS})
 
-
+ADD_EXECUTABLE(A A.cxx)
 ADD_EXECUTABLE(complex complex)
 ADD_EXECUTABLE(complex.file complex.file.cxx)
 IF (UNIX)

Tests/ComplexOneConfig/Executable/complex.cxx

@@ -111,6 +111,34 @@ int main()
   lib += CMAKE_INTDIR;
   lib += "/";
 #endif
+  std::string exe = lib;
+
+  // Test a single character executable to test a: in makefiles
+  exe += "A";
+  exe += cmSystemTools::GetExecutableExtension();
+  int ret;
+  std::string errorMessage;
+  if(cmSystemTools::RunSingleCommand(exe.c_str(), 0, &ret))
+    {
+    if(ret != 10)
+      {
+      errorMessage += exe;
+      errorMessage += " did not return 10";
+      }
+    }
+  else
+    {
+    errorMessage += exe;
+    errorMessage += ": failed to run.";
+    }
+  if(errorMessage.size())
+    {
+    cmFailed(errorMessage.c_str());
+    }
+  else
+    {
+    cmPassed("run Single Character executable A returned 10 as expected.");
+    }
   
   lib += cmDynamicLoader::LibPrefix();
   lib += "CMakeTestModule";

Tests/ComplexRelativePaths/Executable/CMakeLists.txt

@@ -11,7 +11,7 @@ LINK_DIRECTORIES(${Complex_BINARY_DIR}/../../Source/kwsys)
 SET(COMPLEX_LIBS CMakeTestLibrary;CMakeTestLibraryShared;CMakeTestCLibraryShared)
 LINK_LIBRARIES(${COMPLEX_LIBS})
 
-
+ADD_EXECUTABLE(A A.cxx)
 ADD_EXECUTABLE(complex complex)
 ADD_EXECUTABLE(complex.file complex.file.cxx)
 IF (UNIX)

Tests/ComplexRelativePaths/Executable/complex.cxx

@@ -111,6 +111,34 @@ int main()
   lib += CMAKE_INTDIR;
   lib += "/";
 #endif
+  std::string exe = lib;
+
+  // Test a single character executable to test a: in makefiles
+  exe += "A";
+  exe += cmSystemTools::GetExecutableExtension();
+  int ret;
+  std::string errorMessage;
+  if(cmSystemTools::RunSingleCommand(exe.c_str(), 0, &ret))
+    {
+    if(ret != 10)
+      {
+      errorMessage += exe;
+      errorMessage += " did not return 10";
+      }
+    }
+  else
+    {
+    errorMessage += exe;
+    errorMessage += ": failed to run.";
+    }
+  if(errorMessage.size())
+    {
+    cmFailed(errorMessage.c_str());
+    }
+  else
+    {
+    cmPassed("run Single Character executable A returned 10 as expected.");
+    }
   
   lib += cmDynamicLoader::LibPrefix();
   lib += "CMakeTestModule";