acx_python.m4 revision 307729 
1AC_DEFUN([AC_PYTHON_DEVEL],[
2        #
3        # Allow the use of a (user set) custom python version
4        #
5        AC_ARG_VAR([PYTHON_VERSION],[The installed Python
6                version to use, for example '2.3'. This string
7                will be appended to the Python interpreter
8                canonical name.])
9
10        AC_PATH_PROG([PYTHON],[python[$PYTHON_VERSION]])
11        if test -z "$PYTHON"; then
12           AC_MSG_ERROR([Cannot find python$PYTHON_VERSION in your system path])
13           PYTHON_VERSION=""
14        fi
15
16        if test -z "$PYTHON_VERSION"; then
17		PYTHON_VERSION=`$PYTHON -c "import sys; \
18			print(sys.version.split()[[0]])"`
19	fi
20
21        #
22        # Check if you have distutils, else fail
23        #
24        AC_MSG_CHECKING([for the distutils Python package])
25        ac_distutils_result=`$PYTHON -c "import distutils" 2>&1`
26        if test -z "$ac_distutils_result"; then
27                AC_MSG_RESULT([yes])
28        else
29                AC_MSG_RESULT([no])
30                AC_MSG_ERROR([cannot import Python module "distutils".
31Please check your Python installation. The error was:
32$ac_distutils_result])
33                PYTHON_VERSION=""
34        fi
35
36        #
37        # Check for Python include path
38        #
39        AC_MSG_CHECKING([for Python include path])
40        if test -z "$PYTHON_CPPFLAGS"; then
41                python_path=`$PYTHON -c "import distutils.sysconfig; \
42                        print(distutils.sysconfig.get_python_inc());"`
43                if test -n "${python_path}"; then
44                        python_path="-I$python_path"
45                fi
46                PYTHON_CPPFLAGS=$python_path
47        fi
48        AC_MSG_RESULT([$PYTHON_CPPFLAGS])
49        AC_SUBST([PYTHON_CPPFLAGS])
50
51        #
52        # Check for Python library path
53        #
54        AC_MSG_CHECKING([for Python library path])
55        if test -z "$PYTHON_LDFLAGS"; then
56                PYTHON_LDFLAGS=`$PYTHON -c "from distutils.sysconfig import *; \
57                        print('-L'+get_config_var('LIBDIR')+' -L'+get_config_var('LIBDEST')+' '+get_config_var('BLDLIBRARY'));"`
58        fi
59        AC_MSG_RESULT([$PYTHON_LDFLAGS])
60        AC_SUBST([PYTHON_LDFLAGS])
61
62        #
63        # Check for site packages
64        #
65        AC_MSG_CHECKING([for Python site-packages path])
66        if test -z "$PYTHON_SITE_PKG"; then
67                PYTHON_SITE_PKG=`$PYTHON -c "import distutils.sysconfig; \
68                        print(distutils.sysconfig.get_python_lib(1,0));"`
69        fi
70        AC_MSG_RESULT([$PYTHON_SITE_PKG])
71        AC_SUBST([PYTHON_SITE_PKG])
72
73        #
74        # final check to see if everything compiles alright
75        #
76        AC_MSG_CHECKING([consistency of all components of python development environment])
77        AC_LANG_PUSH([C])
78        # save current global flags
79        ac_save_LIBS="$LIBS"
80        ac_save_CPPFLAGS="$CPPFLAGS"
81
82        LIBS="$LIBS $PYTHON_LDFLAGS"
83        CPPFLAGS="$CPPFLAGS $PYTHON_CPPFLAGS"
84        AC_TRY_LINK([
85                #include <Python.h>
86        ],[
87                Py_Initialize();
88        ],[pythonexists=yes],[pythonexists=no])
89
90        AC_MSG_RESULT([$pythonexists])
91
92        if test ! "$pythonexists" = "yes"; then
93           AC_MSG_ERROR([
94  Could not link test program to Python. Maybe the main Python library has been
95  installed in some non-standard library path. If so, pass it to configure,
96  via the LDFLAGS environment variable.
97  Example: ./configure LDFLAGS="-L/usr/non-standard-path/python/lib"
98  ============================================================================
99   ERROR!
100   You probably have to install the development version of the Python package
101   for your distribution.  The exact name of this package varies among them.
102  ============================================================================
103           ])
104          PYTHON_VERSION=""
105        fi
106        AC_LANG_POP
107        # turn back to default flags
108        CPPFLAGS="$ac_save_CPPFLAGS"
109        LIBS="$ac_save_LIBS"
110
111        #
112        # all done!
113        #
114])
115
116