NAME

       LFortran - modern interactive LLVM-based Fortran compiler

SYNOPSIS

       lfortran OPTIONS [files...]  [SUBCOMMAND]

DESCRIPTION

       LFortran is a modern interactive Fortran compiler based on LLVM.

OPTIONS

       • -h, --help: Print this help message and exit

       • -S: Emit assembly, do not assemble or link

       • -c: Compile and assemble, do not link

       • -o TEXT: Specify the file to place the compiler’s output into

       • -v: Be more verbose

       • -E: Preprocess only; do not compile, assemble, or link

       • -l TEXT ...: Link library option

       • -L TEXT ...: Library path option

       • -I TEXT ...: Include path

       • -J TEXT: Where to save mod files

       • -g: Compile with debugging information

       • --debug-with-line-column:  Convert  the  linear  location  info  into  line  +  column in the debugging
         information

       • -D TEXT ...: Define <macro>=<value> (or 1 if <value> omitted)

       • --version: Display compiler version information

       • -W TEXT ...: Linker flags

       • -f TEXT ...: All -f* flags (only -fPIC supported for now)

       • --cpp: Enable C preprocessing

       • --fixed-form: Use fixed form Fortran source parsing

       • --fixed-form-infer: Use heuristics to infer if a file is in fixed form

       • --no-prescan: Turn off prescan

       • --show-prescan: Show tokens for the given file and exit

       • --show-tokens: Show tokens for the given file and exit

       • --show-ast: Show AST for the given file and exit

       • --show-asr: Show ASR for the given file and exit

       • --with-intrinsic-mods: Show intrinsic modules in ASR

       • --show-ast-f90: Show Fortran from AST for the given file and exit

       • --no-color: Turn off colored AST/ASR

       • --no-indent: Turn off Indented print ASR/AST

       • --tree: Tree structure print ASR/AST

       • --json: Print ASR/AST Json format

       • --no-loc: Skip location information in ASR/AST Json format

       • --visualize: Print ASR/AST Visualization

       • --pass TEXT: Apply the ASR pass and show ASR (implies –show-asr)

       • --skip-pass TEXT: Skip an ASR pass in the default pipeline

       • --show-llvm: Show LLVM IR for the given file and exit

       • --show-cpp: Show C++ translation source for the given file and exit

       • --show-c: Show C translation source for the given file and exit

       • --show-asm: Show assembly for the given file and exit

       • --show-wat: Show WAT (WebAssembly Text Format) and exit

       • --show-julia: Show Julia translation source for the given file and exit

       • --show-fortran: Show Fortran translation source for the given file and exit

       • --show-stacktrace: Show internal stacktrace on compiler errors

       • --symtab-only: Only create symbol tables in ASR (skip executable stmt)

       • --time-report: Show compilation time report

       • --static: Create a static executable

       • --no-warnings: Turn off all warnings

       • --no-error-banner: Turn off error banner

       • --error-format TEXT=human: Control how errors are produced (human, short)

       • --backend TEXT=llvm: Select a backend (llvm, cpp, x86, wasm, fortran)

       • --openmp: Enable OpenMP

       • --generate-object-code: Generate object code into .o files

       • --rtlib: Include the full runtime library in the LLVM output

       • --use-loop-variable-after-loop: Allow using loop variable after the loop

       • --fast: Best performance (disable strict standard compliance)

       • --link-with-gcc: Calls GCC for linking instead of clang

       • --target TEXT: Generate code for the given target

       • --print-targets: Print the registered targets

       • --implicit-typing: Allow implicit typing

       • --implicit-interface: Allow implicit interface

       • --implicit-argument-casting: Allow implicit argument casting

       • --print-leading-space: Print leading white space if format is unspecified

       • --interactive-parse: Use interactive parse

       • --verbose: Print debugging statements

       • --dump-all-passes: Apply all the passes and dump the ASR into a file

       • --dump-all-passes-fortran: Apply all passes and dump the ASR after each pass into a Fortran file

       • --cumulative: Apply all the passes cumulatively till the given pass

       • --realloc-lhs: Reallocate left-hand side automatically

       • --module-mangling: Mangles the module name

       • --global-mangling: Mangles all the global symbols

       • --intrinsic-mangling: Mangles all the intrinsic symbols

       • --all-mangling: Mangles all possible symbols

       • --bindc-mangling: Mangles functions with ABI bind(c)

       • --apply-fortran-mangling: Mangle symbols with Fortran supported syntax

       • --mangle-underscore: Mangles with underscore

       • --legacy-array-sections: Enables passing array items as sections if required

       • --ignore-pragma: Ignores all the pragmas

       • --stack-arrays: Allocate memory for arrays on stack

SUBCOMMANDS

       • fmt: Format Fortran source files.

       • kernel: Run in Jupyter kernel mode.

       • mod: Fortran mod file utilities.

       • pywrap: Python wrapper generator

SEE ALSO

       For more information, visit the official LFortran documentation at https://docs.lfortran.org/.

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