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When building on Cygwin without -mwin32, the _WIN32 macro may not be defined. SharedForward must still set the PATH environment variable to ensure runtime dependencies are found. The 'ldd' wrapping feature uses 'cygcheck' for now since a real ldd tool is not available in Cygwin 1.5. We can change to use the real ldd when we choose to stop supporting legacy Cygwin and require 1.7.
KWSys provides a platform-independent API to many common system features that are implemented differently on every platform. This library is intended to be shared among many projects, so it has a configurable namespace. Each project should configure KWSys to use a namespace unique to itself. See comments in CMakeLists.txt for details. You are probably reading this file in the source tree of a surrounding project. In that case, see "../README.kwsys" for details of using KWSys in your project.