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75 lines
3.5 KiB
V
75 lines
3.5 KiB
V
module main
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const (
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HelpText = 'Usage: v [options/commands] [file.v | directory]
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When V is run without any arguments, it is run in REPL mode.
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When given a .v file, it will be compiled. The executable will have the
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same name as the input .v file: `v foo.v` produces `./foo` on *nix systems,
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`foo.exe` on Windows.
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You can use -o to specify a different output executable\'s name.
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When given a directory, all .v files contained in it will be compiled as
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part of a single main module.
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By default the executable will have the same name as the directory.
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To compile all V files in current directory, run `v .`
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Any file ending in _test.v, will be treated as a test.
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It will be compiled and run, evaluating the assert statements in every
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function named test_xxx.
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You can put common options inside an environment variable named VFLAGS, so that
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you don\'t have to repeat them.
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You can set it like this: `export VFLAGS="-cc clang -debug"` on *nix,
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`set VFLAGS=-os msvc` on Windows.
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Options/commands:
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-h, help Display this information.
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-o <file> Write output to <file>.
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-o <file>.c Produce C source without compiling it.
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-o <file>.js Produce JavaScript source.
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-prod Build an optimized executable.
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-v, version Display compiler version and git hash of the compiler source.
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-live Enable hot code reloading (required by functions marked with [live]).
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-os <OS> Produce an executable for the selected OS.
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OS can be linux, mac, windows, msvc.
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Use msvc if you want to use the MSVC compiler on Windows.
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-cc <ccompiler> Specify which C compiler you want to use as a C backend.
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The C backend compiler should be able to handle C99 compatible C code.
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Common C compilers are gcc, clang, tcc, icc, cl...
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-cflags <flags> Pass additional C flags to the C backend compiler.
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Example: -cflags `sdl2-config --cflags`
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-debug Keep the generated C file for debugging in program.tmp.c even after compilation.
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-g Show v line numbers in backtraces. Implies -debug.
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-obf Obfuscate the resulting binary.
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-show_c_cmd Print the full C compilation command and how much time it took.
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- Shorthand for `v runrepl`.
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up Update V. Run `v up` at least once per day, since V development is rapid and features/bugfixes are added constantly.
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run <file.v> Build and execute the V program in file.v. You can add arguments for the V program *after* the file name.
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build <module> Compile a module into an object file.
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runrepl Run the V REPL. If V is running in a tty terminal, the REPL is interactive, otherwise it just reads from stdin.
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symlink Useful on unix systems. Symlinks the current V executable to /usr/local/bin/v, so that V is globally available.
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install <module> Install a user module from https://vpm.vlang.io/.
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test v Run all V test files, and compile all V examples.
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fmt Run vfmt to format the source code. [wip]
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doc Run vdoc over the source code and produce documentation. [wip]
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translate Translates C to V. [wip, will be available in V 0.3]
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'
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)
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/*
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- To disable automatic formatting:
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v -nofmt file.v
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- To build a program with an embedded vlib (use this if you do not have prebuilt vlib libraries or if you
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are working on vlib)
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v -embed_vlib file.v
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*/
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