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v help: describe CFLAGS and LDFLAGS support in v help build-c

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Delyan Angelov 2021-04-22 18:12:28 +03:00
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cmd/v/help/build-c.txt
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@ -16,7 +16,13 @@ see also `v help build`.
Pass the provided flag as is to the C compiler.
Can be specified multiple times to provide multiple flags.
Use quotes to wrap the flag argument if it contains spaces.
V also supports the environment variables CFLAGS and LDFLAGS.
The contents of the CFLAGS variable will be prepended as is, at the start
of the C backend command, right after the name of the compiler.
The contents of the LDFLAGS variable will be appended as is, at the end
of the C backend command, after all other options.
-cstrict
Turn on additional C warnings. This slows down compilation
slightly (~10-10% for gcc), but sometimes provides better diagnosis.