Extend libuv file translate mode workaround to all executables

Since libuv commit v1.14.1~7 (win: add uv__once_init() calls,
2017-08-30) the libuv initialization of the file translate mode may take
place even if we do not use a uv loop.  This change was included in our
libuv update commit f4a26c748b (libuv 2018-01-19).  Therefore use of
libuv even through `cmSystemTools::GetRealPath` in any executable may
trigger its file translate mode setting.

Factor out the logic added to `cmake.exe` by commit v3.9.0-rc4~10^2
(cmake: Fix default file translate mode when using libuv, 2017-06-13)
and re-use to initialize all executables.

Issue: #16962

Source/CPack/cpack.cxx

@@ -99,6 +99,7 @@ int main(int argc, char const* const* argv)
   argv = args.argv();
 
   cmSystemTools::EnableMSVCDebugHook();
+  cmSystemTools::InitializeLibUV();
   cmSystemTools::FindCMakeResources(argv[0]);
   cmCPackLog log;
 

Source/CursesDialog/ccmake.cxx

@@ -75,6 +75,7 @@ int main(int argc, char const* const* argv)
   argc = encoding_args.argc();
   argv = encoding_args.argv();
 
+  cmSystemTools::InitializeLibUV();
   cmSystemTools::FindCMakeResources(argv[0]);
   cmDocumentation doc;
   doc.addCMakeStandardDocSections();

Source/QtDialog/CMakeSetup.cxx

@@ -55,6 +55,7 @@ int main(int argc, char** argv)
   int argc2 = encoding_args.argc();
   char const* const* argv2 = encoding_args.argv();
 
+  cmSystemTools::InitializeLibUV();
   cmSystemTools::FindCMakeResources(argv2[0]);
   // check docs first so that X is not need to get docs
   // do docs, if args were given

Source/cmSystemTools.cxx

@@ -51,6 +51,8 @@
 // include wincrypt.h after windows.h
 #include <wincrypt.h>
 
+#include <fcntl.h> /* _O_TEXT */
+
 #include "cm_uv.h"
 #else
 #include <sys/time.h>
@@ -980,6 +982,21 @@ std::string cmSystemTools::GetRealPath(const std::string& path,
 }
 #endif
 
+void cmSystemTools::InitializeLibUV()
+{
+#if defined(_WIN32)
+  // Perform libuv one-time initialization now, and then un-do its
+  // global _fmode setting so that using libuv does not change the
+  // default file text/binary mode.  See libuv issue 840.
+  uv_loop_close(uv_default_loop());
+#ifdef _MSC_VER
+  _set_fmode(_O_TEXT);
+#else
+  _fmode = _O_TEXT;
+#endif
+#endif
+}
+
 bool cmSystemTools::RenameFile(const char* oldname, const char* newname)
 {
 #ifdef _WIN32

Source/cmSystemTools.h

@@ -503,6 +503,10 @@ public:
   static std::string GetRealPath(const std::string& path,
                                  std::string* errorMessage = 0);
 #endif
+
+  /** Perform one-time initialization of libuv.  */
+  static void InitializeLibUV();
+
 private:
   static bool s_ForceUnixPaths;
   static bool s_RunCommandHideConsole;

Source/cmakemain.cxx

@@ -16,10 +16,6 @@
 #include "cmDynamicLoader.h"
 #endif
 
-#ifdef _WIN32
-#include <fcntl.h>  /* _O_TEXT */
-#include <stdlib.h> /* _set_fmode, _fmode */
-#endif
 #include "cm_uv.h"
 
 #include "cmsys/Encoding.hxx"
@@ -170,19 +166,8 @@ int main(int ac, char const* const* av)
   ac = args.argc();
   av = args.argv();
 
-#if defined(_WIN32)
-  // Perform libuv one-time initialization now, and then un-do its
-  // global _fmode setting so that using libuv does not change the
-  // default file text/binary mode.  See libuv issue 840.
-  uv_loop_close(uv_default_loop());
-#ifdef _MSC_VER
-  _set_fmode(_O_TEXT);
-#else
-  _fmode = _O_TEXT;
-#endif
-#endif
-
   cmSystemTools::EnableMSVCDebugHook();
+  cmSystemTools::InitializeLibUV();
   cmSystemTools::FindCMakeResources(av[0]);
   if (ac > 1) {
     if (strcmp(av[1], "--build") == 0) {

Source/ctest.cxx

@@ -137,6 +137,7 @@ int main(int argc, char const* const* argv)
 
   cmSystemTools::DoNotInheritStdPipes();
   cmSystemTools::EnableMSVCDebugHook();
+  cmSystemTools::InitializeLibUV();
   cmSystemTools::FindCMakeResources(argv[0]);
 
   // Dispatch 'ctest --launch' mode directly.