Valentin Volkl 34732c57b3 py-cffi: add compiler flags to fix build with clang (#29679) ... * py-cffi: add compiler flags to fix build with clang For %clang@13.0.1, this avoids the ``` clang-13: warning: optimization flag '-ffat-lto-objects' is not supported [-Wignored-optimization-argument] ``` warning being turned into an error, and fixes this link error: ``` build/temp.linux-x86_64-3.10/c/_cffi_backend.o: file not recognized: file format not recognized ``` * style		2022-03-23 13:49:36 -05:00
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spack	py-cffi: add compiler flags to fix build with clang (#29679)	2022-03-23 13:49:36 -05:00