brennanmke/usedsymbolscounter

Count unused symbols in an executable

Used Symbols Counter

Run the build with the Count build scheme. Look though the output which is updated. Run build.sh to run a build with Release Configuration.

Removing Data Store

In Build.xcconfig the setting below is defined. It can be commented out to remove the use of DataStore which ideally will cause the executable which links this Swift Package as a static library from the final binary for a Release build.

SWIFT_ACTIVE_COMPILATION_CONDITIONS = $(inherited) USE_DATASTORE

Known Issues

• Public symbols are never dead stripped: (SR-521)
• Don't export public symbols from static libraries by default (SR-1021)
• Why public symbols are always no_dead_strip? (Swift Forums)

Tools

• nm
• otool
• symbols
• file

Abstract Syntax Tree

The parser will produce the Abstract Syntax Tree (AST) which can provide the name of the module for all symbols used in a source file so tha that all uses of the SDK can be counted.

• Dumping AST with Swift Compiler
• Swift Syntax (NSHipter)

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