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https://github.com/mruby/mruby
synced 2026-06-08 16:11:16 +00:00
Yukihiro "Matz" Matsumoto
0d87198c92
When mrbc compiles multiple input files (e.g. `mrbc -g -o out.mrb a.rb b.rb`), the bison parser's one-token lookahead can buffer the final token of one file before partial_hook switches to the next. By the time bison reduces that token into an AST node, `mrb_parser_set_filename` has already reset `p->lineno` to 0, so init_var_header recorded lineno=0 for the previous file's last statement and codegen propagated the previous instruction's line. Save the lineno into `prev_file_lineno` immediately before the reset so init_var_header can restore the correct value when it detects the lookahead edge case (lineno==0 && filename_index>0). close #1316 Co-authored-by: Claude <noreply@anthropic.com>
mruby-bin-mrbc
mrbc is the mruby compiler that compiles Ruby source files into bytecode.
Usage
mrbc [switches] programfile...
Options
-c- check syntax only-o<outfile>- place the output into<outfile>; required for multi-files-v- print version number, then turn on verbose mode-g- produce debugging information-B<symbol>- binary<symbol>output in C language format-S- dump C struct (requires-B)-s- define<symbol>as static variable--remove-lv- remove local variables--no-ext-ops- prohibit using OP_EXTs--no-optimize- disable peephole optimization--verbose- run at verbose mode--version- print the version--copyright- print the copyright
Examples
# Compile a Ruby script to bytecode
mrbc script.rb
# Creates script.mrb
# Specify output file
mrbc -o output.mrb script.rb
# Compile multiple files into one
mrbc -o combined.mrb file1.rb file2.rb
# Generate C source with symbol name
mrbc -Bscript_bytecode script.rb
# Creates script.c with const uint8_t script_bytecode[]
# Check syntax only
mrbc -c script.rb
# Compile with debug information
mrbc -g script.rb
Output Formats
.mrb- RiteBinary format (default), executable bymruby -b.c- C source file (with-Boption), for embedding in C programs
License
MIT License - see the mruby LICENSE file.