Add support for macOS:
* bugfix(exprtk): Upgrade verison of exprtk to fix compile error in clang.
* refact: Remove `bits/stdc++.h` and move `src/codegen/cpp.cpp::replace_all` to `include/picker.hpp::str_replace_all`
* feat: Use `dlopen` for non-linux platform.
* fix: Add missing headers
* fix(nproc): Fix bug of missing `nproc` in MacOS
* refactor(python): Adapt python template to macOS
* refactor(mem_direct): Adapt mem_direct template to macOS
* refactor(lib_suffix): Add shared library suffix in code generator
* refactor(dut_base.cpp): Use code generator to set library suffix
* add(cpp): Add cpp support for macOS
* add(java): Add java support for macOS
* refactor(nproc): Set $NPROC to support macOS
* fix(parser/sv): Add missing header file `unordered_set`
* fix(python_macos): fix the wrong suffix of module-type library
* refactor(codegen/lib): generator template use absolute path
* fix(mem_direct): fix link error in macOS
* feat: Use LLVM Clang to compile instead of AppleClang
* feat(golang): Add golang support for macOS
* fix(rpath): fix CMAKE_BUILD_RPATH for macOS
* feat(lua): Add lua support for macOS
* fix(scala): Fix wrong use of static method in scala
* feat(scala): Add scala support for macOS
* refactor(cmake): Upgrade cmake version to 3.15
* feat(doc): Add doc about installing picker on macOS
chore(ci,test,build): add CI/tests for GSIM, .sv and Java; xcomm fallback; test preflight
- CI: install default-jdk for Java tests
- Tests: add GSIM export smoke, .sv verilator build, Java export
- test/Makefile: add preflight to auto-clean + rebuild with python+java when missing
- Build: Makefile init falls back to latest master for xcomm when branch missing
- Wire new tests into default test targets
- Run build-and-test and appimage-build on all branches
- Restrict appimage-publish and docker-build-push to master
- Reuse build directory via artifact between jobs to avoid rebuilds
- Fix deps: install swig in CI and AppImage job
- Makefile appimage target reuses existing build/ for install & packing
- Remove standalone AppImage/docker workflows to prevent duplicate runs
- build-and-test: install base toolchain and Kitware CMake
- Build and install SWIG v4.2.1 from source
- Build and install Verilator v5.018 from source
- appimage-build: reuse build/ artifact; minimal deps (appimagetool, linuxdeploy)
- Keep: appimage-build on all branches; publish/docker only on master
- 在 test/Makefile 中让 smoke、sv_build、gsim_smoke 依赖 preflight
- 避免 preflight 执行 clean/rebuild 时其他并发目标找不到构建产物
- preflight 完成后仍保留测试阶段的并行度
J. Wang
yaozhicheng