CODEWITHSUNDEEP
xcodegccllvmbinary-compatibility
fbrereto
fbrereto

Reputation: 35925

GCC 4.0, 4.2 and LLVM ABI Compatibility

Are the three main compiler flavors supported by Xcode (gcc 4.0, 4.2, and llvm) binary-compatible with one another? What kind of gotchas and corner cases should I be aware of when bringing a multi-library project up to speed with the most recent Xcode tools?

Upvotes: 7

Views: 3735

Answers (2)

JWWalker
JWWalker

Reputation: 22707

A minor gotcha is that if you want to compile PowerPC code that will run on a G3, you must use GCC 4.0.

Upvotes: 1

mipadi
mipadi

Reputation: 410662

Clang is ABI-compatible with code generated by gcc. Clang also includes experimental support for some newer Objective-C ABIs, but compiling for the newer ABI requires flags, and generated code can be mixed with GCC-generated code anyway.

Upvotes: 4

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