Emscripten build broken on Mac OS

[dpk]

The Makefile appears to be confused at points between the flags and environment variables needed for (native) static builds on Mac OS and those needed for a static Emscripten build.

cc -Wall -DSEXP_USE_DL=0 -g -g3 -O3  -static -DSEXP_USE_DL=0 -o chibi-scheme-static main.o gc.o sexp.o bignum.o gc_heap.o opcodes.o vm.o eval.o simplify.o   -lm -ldl
ld: library not found for -lcrt0.o
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Explicitly passing the right static build flags for Mac OS (make js 'STATICFLAGS=-DSEXP_USE_DL=0') fixes this, but then it seems it gets stuck because the #ifdef maze used for parts of OS interface interface handling apparently ends up not defining a few functions:

/usr/local/Cellar/emscripten/3.1.8/libexec/emcc -c -DSEXP_USE_STRICT_TOPLEVEL_BINDINGS=1 -DSEXP_USE_ALIGNED_BYTECODE=1 -DSEXP_USE_STATIC_LIBS=1 -DSEXP_USE_STATIC_LIBS_NO_INCLUDE=0 -Iinclude  -DSEXP_USE_INTTYPES -Wall -DSEXP_USE_DL=0 -g -g3 -O3 -O2 -fPIC -o eval.o eval.c
In file included from eval.c:1376:
./clibs.c:6450:32: error: implicit declaration of function 'login_tty' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
  res = sexp_make_integer(ctx, login_tty((sexp_filenop(arg0) ? sexp_fileno_fd(arg0) : sexp_unbox_fixnum(arg0))));
                               ^
./clibs.c:6732:9: error: implicit declaration of function 'sexp_pid_cmdline' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
  res = sexp_pid_cmdline(ctx, sexp_sint_value(arg1));
        ^
./clibs.c:6732:7: warning: incompatible integer to pointer conversion assigning to 'sexp' (aka 'struct sexp_struct *') from 'int' [-Wint-conversion]
  res = sexp_pid_cmdline(ctx, sexp_sint_value(arg1));
      ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning and 2 errors generated.

[winstonwolff]

I'm getting this too. I'm running MacOS Ventura 13.2.1. I'm happy to poke around if someone can guide me.

I'm trying with 'chibi-scheme' commit d5e8587, Mar 19, 2023

% emcc --version
emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.34-git