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  1. # ===========================================================================
  2. # https://www.gnu.org/software/autoconf-archive/ax_prog_python_version.html
  3. # ===========================================================================
  4. #
  5. # SYNOPSIS
  6. #
  7. # AX_PROG_PYTHON_VERSION([VERSION],[ACTION-IF-TRUE],[ACTION-IF-FALSE])
  8. #
  9. # DESCRIPTION
  10. #
  11. # Makes sure that python supports the version indicated. If true the shell
  12. # commands in ACTION-IF-TRUE are executed. If not the shell commands in
  13. # ACTION-IF-FALSE are run. Note if $PYTHON is not set (for example by
  14. # running AC_CHECK_PROG or AC_PATH_PROG) the macro will fail.
  15. #
  16. # Example:
  17. #
  18. # AC_PATH_PROG([PYTHON],[python])
  19. # AX_PROG_PYTHON_VERSION([2.4.4],[ ... ],[ ... ])
  20. #
  21. # This will check to make sure that the python you have supports at least
  22. # version 2.4.4.
  23. #
  24. # NOTE: This macro uses the $PYTHON variable to perform the check.
  25. # AX_WITH_PYTHON can be used to set that variable prior to running this
  26. # macro. The $PYTHON_VERSION variable will be valorized with the detected
  27. # version.
  28. #
  29. # LICENSE
  30. #
  31. # Copyright (c) 2009 Francesco Salvestrini <salvestrini@users.sourceforge.net>
  32. #
  33. # Copying and distribution of this file, with or without modification, are
  34. # permitted in any medium without royalty provided the copyright notice
  35. # and this notice are preserved. This file is offered as-is, without any
  36. # warranty.
  37. #serial 12
  38. AC_DEFUN([AX_PROG_PYTHON_VERSION],[
  39. AC_REQUIRE([AC_PROG_SED])
  40. AC_REQUIRE([AC_PROG_GREP])
  41. AS_IF([test -n "$PYTHON"],[
  42. ax_python_version="$1"
  43. AC_MSG_CHECKING([for python version])
  44. changequote(<<,>>)
  45. python_version=`$PYTHON -V 2>&1 | $GREP "^Python " | $SED -e 's/^.* \([0-9]*\.[0-9]*\.[0-9]*\)/\1/'`
  46. changequote([,])
  47. AC_MSG_RESULT($python_version)
  48. AC_SUBST([PYTHON_VERSION],[$python_version])
  49. AX_COMPARE_VERSION([$ax_python_version],[le],[$python_version],[
  50. :
  51. $2
  52. ],[
  53. :
  54. $3
  55. ])
  56. ],[
  57. AC_MSG_WARN([could not find the python interpreter])
  58. $3
  59. ])
  60. ])