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**Pre-requisites:**
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* Xcode suite (free)
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* SDK bundle for target minimum version
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* Fortran compiler (not part of Xcode, but installable as part of ShellB3 using 'install_macgfortran' before building a trim)
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**Relevant Environment Variables:**
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* *MACOSX_DEPLOYMENT_TARGET* - target Mac OS version. Default 10.9. used to determine minimal runtime version at compile time, and SDK to link to. This can be any earlier version if you have the appropriate SDK bundle.
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* *PORTABLESHELLB3* - require any external libraries be part of the target SDK. Default "YES"
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* *CPUTYPE* - target different platform. defaults to undefined, meaning native (x86_64). can be x86_64 or i386 |
