acx_python.m4 revision 356345 
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=`$PYTHON -c "import sys; \
18			print(sys.version.split()[[0]])"`
19	fi
20
21        #
22        # Check if you have distutils, else fail
23        #
24        AC_MSG_CHECKING([for the distutils Python package])
25        if ac_distutils_result=`$PYTHON -c "import distutils" 2>&1`; then
26                AC_MSG_RESULT([yes])
27        else
28                AC_MSG_RESULT([no])
29                AC_MSG_ERROR([cannot import Python module "distutils".
30Please check your Python installation. The error was:
31$ac_distutils_result])
32                PYTHON_VERSION=""
33        fi
34
35        #
36        # Check for Python include path
37        #
38        AC_MSG_CHECKING([for Python include path])
39        if test -z "$PYTHON_CPPFLAGS"; then
40                python_path=`$PYTHON -c "import distutils.sysconfig; \
41                        print(distutils.sysconfig.get_python_inc());"`
42                if test -n "${python_path}"; then
43                        python_path="-I$python_path"
44                fi
45                PYTHON_CPPFLAGS=$python_path
46        fi
47        AC_MSG_RESULT([$PYTHON_CPPFLAGS])
48        AC_SUBST([PYTHON_CPPFLAGS])
49
50        #
51        # Check for Python library path
52        #
53        AC_MSG_CHECKING([for Python library path])
54        if test -z "$PYTHON_LDFLAGS"; then
55                PYTHON_LDFLAGS=`$PYTHON -c "from distutils.sysconfig import *; \
56                        print('-L'+get_config_var('LIBDIR')+' -L'+get_config_var('LIBDEST')+' '+get_config_var('BLDLIBRARY'));"`
57        fi
58        AC_MSG_RESULT([$PYTHON_LDFLAGS])
59        AC_SUBST([PYTHON_LDFLAGS])
60
61        #
62        # Check for site packages
63        #
64        AC_MSG_CHECKING([for Python site-packages path])
65        if test -z "$PYTHON_SITE_PKG"; then
66                PYTHON_SITE_PKG=`$PYTHON -c "import distutils.sysconfig; \
67                        print(distutils.sysconfig.get_python_lib(1,0));"`
68        fi
69        AC_MSG_RESULT([$PYTHON_SITE_PKG])
70        AC_SUBST([PYTHON_SITE_PKG])
71
72        #
73        # final check to see if everything compiles alright
74        #
75        AC_MSG_CHECKING([consistency of all components of python development environment])
76        AC_LANG_PUSH([C])
77        # save current global flags
78        ac_save_LIBS="$LIBS"
79        ac_save_CPPFLAGS="$CPPFLAGS"
80
81        LIBS="$LIBS $PYTHON_LDFLAGS"
82        CPPFLAGS="$CPPFLAGS $PYTHON_CPPFLAGS"
83        AC_TRY_LINK([
84                #include <Python.h>
85        ],[
86                Py_Initialize();
87        ],[pythonexists=yes],[pythonexists=no])
88
89        AC_MSG_RESULT([$pythonexists])
90
91        if test ! "$pythonexists" = "yes"; then
92           AC_MSG_ERROR([
93  Could not link test program to Python. Maybe the main Python library has been
94  installed in some non-standard library path. If so, pass it to configure,
95  via the LDFLAGS environment variable.
96  Example: ./configure LDFLAGS="-L/usr/non-standard-path/python/lib"
97  ============================================================================
98   ERROR!
99   You probably have to install the development version of the Python package
100   for your distribution.  The exact name of this package varies among them.
101  ============================================================================
102           ])
103          PYTHON_VERSION=""
104        fi
105        AC_LANG_POP
106        # turn back to default flags
107        CPPFLAGS="$ac_save_CPPFLAGS"
108        LIBS="$ac_save_LIBS"
109
110        #
111        # all done!
112        #
113])
114
115