Gems like mruby-task add preprocessor defines (MRB_USE_TASK_SCHEDULER)
that affect mrb_state structure. The amalgamation generator now detects
these defines from the build configuration and adds them at the top of
mruby.h before struct definitions are encountered.
Supported define patterns: MRB_USE_*, MRB_UTF8_*, HAVE_MRUBY_*
Co-authored-by: Claude <noreply@anthropic.com>
Add ability to generate combined mruby.h and mruby.c files for
single-file embedding, similar to SQLite's amalgamation.
Usage: rake amalgam
Output: build/<target>/amalgam/mruby.{h,c}
Features:
- Headers concatenated in dependency order with guards stripped
- Sources concatenated with proper ordering (core, gems, mrblib)
- X-macro headers (ops.h) inlined at each include point
- Local includes automatically inlined
- Handles both src/ and core/ gem directory conventions
Co-authored-by: Claude <noreply@anthropic.com>
Yukihiro "Matz" Matsumoto