Parse args, build conformance + unit tests + compile-only targets.

Entry point

Parse args and generate build artifacts.

used by the macros for registering tests

case insensitive strcmp

for sorting tests by suite/file/line

Return every valid flag combination. Constraints: - float=1 requires precision=1 - single-precision=1 requires float=1 (and transitiv

Write compile_commands.json and link.rsp for Windows parallel builds.

Write main.c that declares and calls every combo's test function.

Write a POSIX Makefile that compiles all combos and links them.

NOLINTBEGIN(readability-convert-member-functions-to-static)

Compile a single translation unit.

this was requested to be made virtual so users could override it