| dnl a macro to check for the installed Cython version; note PYTHON needs to |
| dnl be set before this function is called. |
| dnl CYTHON_CHECK_VERSION([MIN-VERSION], [ACTION-IF-TRUE], [ACTION-IF-FALSE]) |
| AC_DEFUN([CYTHON_CHECK_VERSION], |
| [prog="import re, sys |
| from Cython.Compiler.Version import version |
| def get_int(arg): |
| matched = re.match(r'\d+', arg) |
| if matched is None: |
| return 0 |
| else: |
| return int(matched.group(0)) |
| # split strings by '.' and convert to numeric. Append some zeros |
| # because we need at least 4 digits for the hex conversion. |
| ver = map(get_int, version.rstrip('abcdefghijklmnopqrstuvwxyz').split('.')) + [[0, 0, 0]] |
| verhex = 0 |
| for i in range(0, 4): verhex = (verhex << 8) + ver[[i]] |
| minver = map(get_int, '$1'.split('.')) + [[0, 0, 0]] |
| minverhex = 0 |
| for i in range(0, 4): minverhex = (minverhex << 8) + minver[[i]] |
| sys.exit(verhex < minverhex)" |
| AS_IF([AM_RUN_LOG([$PYTHON -c "$prog"])], [$2], [$3])]) |
| |
