1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
dnl @synopsis AX_WITH_PYTHON([minimum-version], [value-if-not-found], [path])
dnl
dnl Locates an installed Python binary, placing the result in the
dnl precious variable $PYTHON. Accepts a present $PYTHON, then
dnl --with-python, and failing that searches for python in the given
dnl path (which defaults to the system path). If python is found,
dnl $PYTHON is set to the full path of the binary; if it is not found,
dnl $PYTHON is set to VALUE-IF-NOT-FOUND, which defaults to 'python'.
dnl
dnl Example:
dnl
dnl AX_WITH_PYTHON(2.2, missing)
dnl
dnl @category InstalledPackages
dnl @author Dustin Mitchell <dustin@cs.uchicago.edu>
dnl @version 2005-01-22
dnl @license GPLWithACException
AC_DEFUN([AX_WITH_PYTHON],
[
AC_ARG_VAR([PYTHON])
dnl unless PYTHON was supplied to us (as a precious variable)
if test -z "$PYTHON"
then
AC_MSG_CHECKING(for --with-python)
AC_ARG_WITH(python,
AC_HELP_STRING([--with-python=PYTHON],
[absolute path name of Python executable]),
[ if test "$withval" != "yes"
then
PYTHON="$withval"
AC_MSG_RESULT($withval)
else
AC_MSG_RESULT(no)
fi
],
[ AC_MSG_RESULT(no)
])
fi
dnl if it's still not found, check the paths, or use the fallback
if test -z "$PYTHON"
then
AC_PATH_PROG([PYTHON], python, m4_ifval([$2],[$2],[python]), $3)
fi
dnl check version if required
m4_ifvaln([$1], [
dnl do this only if we didn't fall back
if test "$PYTHON" != "m4_ifval([$2],[$2],[python])"
then
AC_MSG_CHECKING($PYTHON version >= $1)
if test `$PYTHON -c ["import sys; print sys.version[:3] >= \"$1\" and \"OK\" or \"OLD\""]` = "OK"
then
AC_MSG_RESULT(ok)
else
AC_MSG_RESULT(no)
PYTHON="$2"
fi
fi])
])
|
