Merge branch 'upstream-KWSys' into update-kwsys

* upstream-KWSys:
  KWSys 2017-10-12 (ef0ad34d)

Source/kwsys/CMakeLists.txt

@@ -445,8 +445,13 @@ KWSYS_PLATFORM_C_TEST(KWSYS_C_HAS_PTRDIFF_T
   "Checking whether C compiler has ptrdiff_t in stddef.h" DIRECT)
 KWSYS_PLATFORM_C_TEST(KWSYS_C_HAS_SSIZE_T
   "Checking whether C compiler has ssize_t in unistd.h" DIRECT)
+IF(KWSYS_USE_Process)
+  KWSYS_PLATFORM_C_TEST(KWSYS_C_HAS_CLOCK_GETTIME_MONOTONIC
+    "Checking whether C compiler has clock_gettime" DIRECT)
+ENDIF()
+
 SET_SOURCE_FILES_PROPERTIES(ProcessUNIX.c System.c PROPERTIES
-  COMPILE_FLAGS "-DKWSYS_C_HAS_PTRDIFF_T=${KWSYS_C_HAS_PTRDIFF_T} -DKWSYS_C_HAS_SSIZE_T=${KWSYS_C_HAS_SSIZE_T}"
+  COMPILE_FLAGS "-DKWSYS_C_HAS_PTRDIFF_T=${KWSYS_C_HAS_PTRDIFF_T} -DKWSYS_C_HAS_SSIZE_T=${KWSYS_C_HAS_SSIZE_T} -DKWSYS_C_HAS_CLOCK_GETTIME_MONOTONIC=${KWSYS_C_HAS_CLOCK_GETTIME_MONOTONIC}"
   )
 
 IF(DEFINED KWSYS_PROCESS_USE_SELECT)

Source/kwsys/CommandLineArguments.cxx

@@ -529,10 +529,7 @@ void CommandLineArguments::GenerateHelp()
     }
   }
 
-  // Create format for that string
-  char format[80];
-  sprintf(format, "  %%-%us  ", static_cast<unsigned int>(maxlen));
-
+  CommandLineArguments::Internal::String::size_type maxstrlen = maxlen;
   maxlen += 4; // For the space before and after the option
 
   // Print help for each option
@@ -540,27 +537,24 @@ void CommandLineArguments::GenerateHelp()
     CommandLineArguments::Internal::SetOfStrings::iterator sit;
     for (sit = mpit->second.begin(); sit != mpit->second.end(); sit++) {
       str << std::endl;
-      char argument[100];
-      sprintf(argument, "%s", sit->c_str());
+      std::string argument = *sit;
       switch (this->Internals->Callbacks[*sit].ArgumentType) {
         case CommandLineArguments::NO_ARGUMENT:
           break;
         case CommandLineArguments::CONCAT_ARGUMENT:
-          strcat(argument, "opt");
+          argument += "opt";
           break;
         case CommandLineArguments::SPACE_ARGUMENT:
-          strcat(argument, " opt");
+          argument += " opt";
           break;
         case CommandLineArguments::EQUAL_ARGUMENT:
-          strcat(argument, "=opt");
+          argument += "=opt";
           break;
         case CommandLineArguments::MULTI_ARGUMENT:
-          strcat(argument, " opt opt ...");
+          argument += " opt opt ...";
           break;
       }
-      char buffer[80];
-      sprintf(buffer, format, argument);
-      str << buffer;
+      str << "  " << argument.substr(0, maxstrlen) << "  ";
     }
     const char* ptr = this->Internals->Callbacks[mpit->first].Help;
     size_t len = strlen(ptr);

Source/kwsys/DynamicLoader.cxx

@@ -163,17 +163,13 @@ DynamicLoader::SymbolPointer DynamicLoader::GetSymbolAddress(
 {
   void* result = 0;
   // Need to prepend symbols with '_' on Apple-gcc compilers
-  size_t len = sym.size();
-  char* rsym = new char[len + 1 + 1];
-  strcpy(rsym, "_");
-  strcat(rsym + 1, sym.c_str());
+  std::string rsym = '_' + sym;
 
-  NSSymbol symbol = NSLookupSymbolInModule(lib, rsym);
+  NSSymbol symbol = NSLookupSymbolInModule(lib, rsym.c_str());
   if (symbol) {
     result = NSAddressOfSymbol(symbol);
   }
 
-  delete[] rsym;
   // Hack to cast pointer-to-data to pointer-to-function.
   return *reinterpret_cast<DynamicLoader::SymbolPointer*>(&result);
 }
@@ -237,17 +233,12 @@ DynamicLoader::SymbolPointer DynamicLoader::GetSymbolAddress(
   void* result;
 #if defined(__BORLANDC__) || defined(__WATCOMC__)
   // Need to prepend symbols with '_'
-  size_t len = sym.size();
-  char* rsym = new char[len + 1 + 1];
-  strcpy(rsym, "_");
-  strcat(rsym, sym.c_str());
+  std::string ssym = '_' + sym;
+  const char* rsym = ssym.c_str();
 #else
   const char* rsym = sym.c_str();
 #endif
   result = (void*)GetProcAddress(lib, rsym);
-#if defined(__BORLANDC__) || defined(__WATCOMC__)
-  delete[] rsym;
-#endif
 // Hack to cast pointer-to-data to pointer-to-function.
 #ifdef __WATCOMC__
   return *(DynamicLoader::SymbolPointer*)(&result);

Source/kwsys/ProcessUNIX.c

@@ -2026,7 +2026,15 @@ static kwsysProcessTime kwsysProcessTimeGetCurrent(void)
 {
   kwsysProcessTime current;
   kwsysProcessTimeNative current_native;
+#if KWSYS_C_HAS_CLOCK_GETTIME_MONOTONIC
+  struct timespec current_timespec;
+  clock_gettime(CLOCK_MONOTONIC, &current_timespec);
+
+  current_native.tv_sec = current_timespec.tv_sec;
+  current_native.tv_usec = current_timespec.tv_nsec / 1000;
+#else
   gettimeofday(&current_native, 0);
+#endif
   current.tv_sec = (long)current_native.tv_sec;
   current.tv_usec = (long)current_native.tv_usec;
   return current;

Source/kwsys/kwsysPlatformTestsC.c

@@ -55,6 +55,21 @@ int KWSYS_PLATFORM_TEST_C_MAIN()
 }
 #endif
 
+#ifdef TEST_KWSYS_C_HAS_CLOCK_GETTIME_MONOTONIC
+#if defined(__APPLE__)
+#include <AvailabilityMacros.h>
+#if MAC_OS_X_VERSION_MIN_REQUIRED < 101200
+#error "clock_gettime not available on macOS < 10.12"
+#endif
+#endif
+#include <time.h>
+int KWSYS_PLATFORM_TEST_C_MAIN()
+{
+  struct timespec ts;
+  return clock_gettime(CLOCK_MONOTONIC, &ts);
+}
+#endif
+
 #ifdef TEST_KWSYS_C_TYPE_MACROS
 char* info_macros =
 #if defined(__SIZEOF_SHORT__)