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CT sizeof(+friends) for {.importc, completeStruct.} types, enable ABI static checks (#13926)

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* -d:checkabi obsolete (ABI check now enforced); add `addTypeHeader` helper
* cleanups
* import sizeof at CT for {.completeType.}
* address comments; revert default enabling of -d:checkAbi for now
* mimportc_size_check.nim => msizeof5.nim; merge mabi_check.nim into msizeof5.nim; refactor
* all pragmas in errmsgs should be written: '.importc' (un-ambiguous and less verbose than {.importc.})
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Timothee Cour 2020-04-23 02:24:09 -07:00 • committed by GitHub
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@ -438,9 +438,8 @@ Define Effect
``memProfiler`` Enables memory profiling for the native GC.
``uClibc`` Use uClibc instead of libc. (Relevant for Unix-like OSes)
``checkAbi`` When using types from C headers, add checks that compare
what's in the Nim file with what's in the C header
(requires a C compiler with _Static_assert support, like
any C11 compiler)
what's in the Nim file with what's in the C header.
This may become enabled by default in the future.
``tempDir`` This symbol takes a string as its value, like
``--define:tempDir:/some/temp/path`` to override the
temporary directory returned by ``os.getTempDir()``.