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PaulStoffregen / teensy_loader_cli

Command line Teensy Loader
http://www.pjrc.com/teensy/loader_cli.html
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In case of missing macOS SDK (Xcode), make instructs the user and exits #34

Closed neonsoftware closed 7 years ago

neonsoftware commented 7 years ago

Users of OSX that have not yet installed Xcode will have an empty $SDK variable (xcrun --show-sdk-path returns empty, see listing), which will expand in a malformatted compilation line, which returns a misleading error message (see listing).

An error message blocks this situation and a clear error message instructs the user on installing Xcode.

before

teensy_loader_cli >>> make
cc -O2 -Wall -DUSE_APPLE_IOKIT -isysroot  -o teensy_loader_cli teensy_loader_cli.c -Wl,-syslibroot, -framework IOKit -framework CoreFoundation
clang: error: no such file or directory: 'teensy_loader_cli'
clang: warning: no such sysroot directory: '-o'
make: *** [teensy_loader_cli] Error 1

teensy_loader_cli >>> xcrun --show-sdk-path

teensy_loader_cli >>>

After

teensy_loader_cli >>> make
Makefile:37: *** SDK was not found. To use this type of compilation please install Xcode.  Stop.

Impact

All other compilations (LINUX, WINDOWS, MACOSX using USE_LIBUSB=yes, BSD) are not affected by this change.

Available for any demand for change, or feedback, please feel free to modify it.