diff options
| -rw-r--r-- | Source/cmake.cxx | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/Source/cmake.cxx b/Source/cmake.cxx index 036440a..d44a36b 100644 --- a/Source/cmake.cxx +++ b/Source/cmake.cxx @@ -4033,10 +4033,18 @@ static bool cmakeCheckStampFile(const char* stampName) } // The build system is up to date. The stamp file has been removed - // by the VS IDE due to a "rebuild" request. Just restore it. - std::ofstream stamp(stampName); + // by the VS IDE due to a "rebuild" request. Restore it atomically. + cmOStringStream stampTempStream; + stampTempStream << stampName << ".tmp" << cmSystemTools::RandomSeed(); + std::string stampTempString = stampTempStream.str(); + const char* stampTemp = stampTempString.c_str(); + { + // TODO: Teach cmGeneratedFileStream to use a random temp file (with + // multiple tries in unlikely case of conflict) and use that here. + std::ofstream stamp(stampTemp); stamp << "# CMake generation timestamp file this directory.\n"; - if(stamp) + } + if(cmSystemTools::RenameFile(stampTemp, stampName)) { // Notify the user why CMake is not re-running. It is safe to // just print to stdout here because this code is only reachable @@ -4047,6 +4055,7 @@ static bool cmakeCheckStampFile(const char* stampName) } else { + cmSystemTools::RemoveFile(stampTemp); cmSystemTools::Error("Cannot restore timestamp ", stampName); return false; } |