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-rw-r--r--Source/cmLocalGenerator.cxx2
1 files changed, 1 insertions, 1 deletions
diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index 33b8861..3aaf824 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -308,7 +308,7 @@ void cmLocalGenerator::GenerateInstallRules()
fout << "# Install script for directory: "
<< this->Makefile->GetCurrentDirectory() << std::endl << std::endl;
fout << "# Set the install prefix" << std::endl
- << "IF(NOT CMAKE_INSTALL_PREFIX)" << std::endl
+ << "IF(NOT DEFINED CMAKE_INSTALL_PREFIX)" << std::endl
<< " SET(CMAKE_INSTALL_PREFIX \"" << prefix << "\")" << std::endl
<< "ENDIF(NOT DEFINED CMAKE_INSTALL_PREFIX)" << std::endl
<< "STRING(REGEX REPLACE \"/$\" \"\" CMAKE_INSTALL_PREFIX \"${CMAKE_INSTALL_PREFIX}\")" << std::endl