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v.pref: make -b unknown_backend an error, with a more informative diagnostic message

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Delyan Angelov
2022-12-01 15:28:03 +02:00
parent 02f5c59340
commit 161847ed1a
2 changed files with 16 additions and 9 deletions
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9
cmd/v/help/build.txt
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@@ -34,15 +34,16 @@ If you have not set it, a suitable platform specific folder (like /tmp) will be
NB: the build flags are shared with the run command too:
-b <backend>, -backend <backend>
Specify the backend to use while building the executable.
Specifies the backend that will be used for building the executable.
Current list of supported backends:
* `c` (default) - V outputs C source code which is passed to a C compiler to be compiled.
* `interpret` - Same as `v interpret` to run the V program
* `c` (default) - V outputs C source code, which is then passed to a C compiler.
* `go` - V outputs Go source code, which is then passed to a Go compiler.
* `interpret` - V will interpret the V program directly, instead of compiling it first. Same as `v interpret file.v`.
* `js` - V outputs JS source code which can be passed to NodeJS to be ran.
* `js_browser` - V outputs JS source code ready for the browser.
* `js_node` - V outputs JS source code to run with nodejs.
* `js_freestanding` - V outputs JS source code with no hard runtime dependency.
* `native` - V outputs native executable (see -arch x64|arm64 and -os linux|macos) (EXPERIMENTAL).
* `native` - V outputs a native executable directly (see -arch x64|arm64 and -os linux|macos) (EXPERIMENTAL).
-d <flag>[=<value>], -define <flag>[=<value>]
Define the provided flag.