[Cmake-commits] CMake branch, next, updated. v3.3.2-3350-gaa7274d

[Brad King]

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       via  fa5284f07f20e6d62ca5d2dab36ecc48c0511eba (commit)
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- Log -----------------------------------------------------------------
https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=aa7274d72651c28dfa7f8791208fbe57d0f75c3f
commit aa7274d72651c28dfa7f8791208fbe57d0f75c3f
Merge: 42730ac fa5284f
Author:     Brad King <brad.king at kitware.com>
AuthorDate: Mon Sep 28 11:33:36 2015 -0400
Commit:     CMake Topic Stage <kwrobot at kitware.com>
CommitDate: Mon Sep 28 11:33:36 2015 -0400

    Merge topic 'vs-old-rule-files' into next
    
    fa5284f0 VS: Prevent generated "rule" files from causing rebuilds


https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=fa5284f07f20e6d62ca5d2dab36ecc48c0511eba
commit fa5284f07f20e6d62ca5d2dab36ecc48c0511eba
Author:     Mike Pagel <Mike.Pagel at bmw.de>
AuthorDate: Mon Sep 28 15:33:10 2015 +0200
Commit:     Brad King <brad.king at kitware.com>
CommitDate: Mon Sep 28 10:58:57 2015 -0400

    VS: Prevent generated "rule" files from causing rebuilds
    
    When we generate a ".rule" file to attach a custom command in a VS IDE
    project, set the file timestamp to be old enough to prevent the rule
    from re-running due to its timestamp.

diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index 92403e3..6c71313 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -9,6 +9,7 @@
   implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   See the License for more information.
 ============================================================================*/
+#include "windows.h"
 #include "cmVisualStudio10TargetGenerator.h"
 #include "cmGlobalVisualStudio10Generator.h"
 #include "cmGeneratorTarget.h"
@@ -871,6 +872,9 @@ cmVisualStudio10TargetGenerator::WriteCustomRule(cmSourceFile const* source,
         fout << "# generated from CMake\n";
         fout.flush();
         fout.close();
+        // Force given file to have a very old timestamp, thus
+        // preventing dependent rebuilds.
+        this->ForceOld(sourcePath);
         }
       else
         {
@@ -3458,3 +3462,26 @@ cmVisualStudio10TargetGenerator
   this->WriteString("<None Include=\"", 2);
   (*this->BuildFileStream) << cmVS10EscapeXML(keyFile) << "\" />\n";
 }
+
+bool cmVisualStudio10TargetGenerator::ForceOld(const std::string& source) const
+{
+  HANDLE h = CreateFileW(
+    cmSystemTools::ConvertToWindowsExtendedPath(source).c_str(),
+    FILE_WRITE_ATTRIBUTES,
+    FILE_SHARE_WRITE, 0, OPEN_EXISTING,
+    FILE_FLAG_BACKUP_SEMANTICS, 0);
+  if (!h)
+    {
+    return false;
+    }
+
+  FILETIME const ftime_20010101 = { 3365781504, 29389701 };
+  if (!SetFileTime(h, &ftime_20010101, &ftime_20010101, &ftime_20010101))
+    {
+    CloseHandle(h);
+    return false;
+    }
+
+  CloseHandle(h);
+  return true;
+}
diff --git a/Source/cmVisualStudio10TargetGenerator.h b/Source/cmVisualStudio10TargetGenerator.h
index 5fadb60..f2aaf05 100644
--- a/Source/cmVisualStudio10TargetGenerator.h
+++ b/Source/cmVisualStudio10TargetGenerator.h
@@ -130,6 +130,8 @@ private:
   cmIDEFlagTable const* GetLinkFlagTable() const;
   cmIDEFlagTable const* GetMasmFlagTable() const;
 
+  bool ForceOld(const std::string& source) const;
+
 private:
   typedef cmVisualStudioGeneratorOptions Options;
   typedef std::map<std::string, Options*> OptionsMap;

-----------------------------------------------------------------------

Summary of changes:
 Source/cmVisualStudio10TargetGenerator.cxx |   27 +++++++++++++++++++++++++++
 Source/cmVisualStudio10TargetGenerator.h   |    2 ++
 2 files changed, 29 insertions(+)


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