cpm on mac reports success even when the linker fails
e.g. when the executable couldn't be created (because it already was a directory) it reports:
ld: warning: option -s is obsolete and being ignored
ld: can't open output file for writing: /Users/build/mart/clean-bundle-complete/examples/iTasks/BasicAPIExamples, errno=21 for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
iTasks Resource Collector: Output css file /Users/build/mart/clean-bundle-complete/examples/iTasks/BasicAPIExamples-www/css/itasks-modules.css
iTasks Resource Collector: Adding css file /Users/build/mart/clean-bundle-complete/lib/iTasks/iTasks/Extensions/Admin/WorkflowAdmin.css
iTasks Resource Collector: Adding css file /Users/build/mart/clean-bundle-complete/lib/iTasks/iTasks/UI/Editor/Containers.css
iTasks Resource Collector: Adding css file /Users/build/mart/clean-bundle-complete/lib/iTasks/iTasks/UI/Editor/Controls.css
iTasks Resource Collector: Adding css file /Users/build/mart/clean-bundle-complete/lib/iTasks/iTasks/UI/Editor.css
iTasks Resource Collector: Adding css file /Users/build/mart/clean-bundle-complete/lib/iTasks/iTasks/UI/Definition.css
iTasks Resource Collector: Adding css file /Users/build/mart/clean-bundle-complete/examples/iTasks/BasicAPIExamples.css
iTasks Resource Collector: Copying resources from /Users/build/mart/clean-bundle-complete/lib/ABCInterpreter/WebPublic
iTasks Resource Collector: Copying resources from /Users/build/mart/clean-bundle-complete/lib/iTasks/iTasks/Extensions/GIS/WebPublic
iTasks Resource Collector: Copying resources from /Users/build/mart/clean-bundle-complete/lib/iTasks/iTasks/Extensions/Form/WebPublic
iTasks Resource Collector: Copying resources from /Users/build/mart/clean-bundle-complete/lib/iTasks/iTasks/UI/WebPublic
iTasks Resource Collector: Copying resources from /Users/build/mart/clean-bundle-complete/examples/iTasks/BasicAPIExamples-WebPublic
iTasks Resource Collector: Copying resources from /Users/build/mart/clean-bundle-complete/examples/iTasks/WebPublic
Finished making.
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