Support _core highslib

mip/highs.py

@@ -30,16 +30,21 @@
  # need library matching operating system
  platform = sys.platform.lower()
  if "linux" in platform:
- pattern = "highs_bindings.*.so"
+ patterns = ["highs_bindings.*.so", "_core.*.so"]
  elif platform.startswith("win"):
- pattern = "highs_bindings.*.pyd"
+ patterns = ["highs_bindings.*.pyd", "_core.*.pyd"]
  elif any(platform.startswith(p) for p in ("darwin", "macos")):
- pattern = "highs_bindings.*.so"
+ patterns = ["highs_bindings.*.so", "_core.*.so"]
  else:
  raise NotImplementedError(f"{sys.platform} not supported!")
 
  # there should only be one match
- [libfile] = glob.glob(os.path.join(pkg_path, pattern))
+ matched_files = []
+ for pattern in patterns:
+ matched_files.extend(glob.glob(os.path.join(pkg_path, pattern)))
+ if len(matched_files) != 1:
+ raise FileNotFoundError(f"Could not find HiGHS library in {pkg_path}.")
+ [libfile] = matched_files
  logger.debug("Choosing HiGHS library {libfile} via highspy package.")
 
  highslib = ffi.dlopen(libfile)