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dino-lang / dino

The programming language DINO
GNU General Public License v2.0
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DINO/configure thinks Xcode's gcc supports -ffat-lto-objects, but it actually doesn't #6

Closed teshields closed 8 years ago

teshields commented 8 years ago

Environment: Mac OS X El Capitan version 10.11.5 (current) Xcode version 7.3.1 (current) MacPorts version 2.3.4 (current) - provides libgmp

'DINO/configure' thinks that the Xcode installed version of gcc (clang-703.0.31) supports the '-ffat-lto-objects' compiler option, but use of that option in the build in DINO results in warnings: clang: warning: optimization flag '-ffat-lto-objects' is not supported

teshields commented 8 years ago

Note: the MacPorts version of gcc interacts with 'DINO/configure' correctly, and does support '-ffat-lto-objects'

vnmakarov commented 8 years ago

As I remember LLVM does not need -ffat-lto-object and ignoring it is ok for LLVM but I'll look what I can do to remove the warning.

vnmakarov commented 8 years ago

Dino configure script checks that the used C compiler accepts -ffat-lto-objects. LLVM accepts it with a warning and ignores it as it is not necessary for LLVM. Even if a compiler ignores the option, the building should work (there will be no inter-file optimizations in the worst case).

It would be a real issue only if the configuration script did not check acceptance of -ffat-lto-objects. But it does. So I am closing the issue.