diff options
Diffstat (limited to 'acx_python.m4')
| -rw-r--r-- | acx_python.m4 | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/acx_python.m4 b/acx_python.m4 new file mode 100644 index 000000000000..6fa925af1684 --- /dev/null +++ b/acx_python.m4 @@ -0,0 +1,200 @@ +AC_DEFUN([AC_PYTHON_DEVEL],[ + # + # Allow the use of a (user set) custom python version + # + AC_ARG_VAR([PYTHON_VERSION],[The installed Python + version to use, for example '2.3'. This string + will be appended to the Python interpreter + canonical name.]) + + AC_PATH_PROG([PYTHON],[python[$PYTHON_VERSION]]) + if test -z "$PYTHON"; then + AC_MSG_ERROR([Cannot find python$PYTHON_VERSION in your system path]) + PYTHON_VERSION="" + fi + + if test -z "$PYTHON_VERSION"; then + PYTHON_VERSION=`$PYTHON -c "import sys, string; \ + print string.split(sys.version)[[0]]"` + fi + + # + # Check for a version of Python >= 2.1.0 + # + AC_MSG_CHECKING([for a version of Python >= '2.1.0']) + ac_supports_python_ver=`$PYTHON -c "import sys, string; \ + ver = string.split(sys.version)[[0]]; \ + print ver >= '2.1.0'"` + if test "$ac_supports_python_ver" != "True"; then + if test -z "$PYTHON_NOVERSIONCHECK"; then + AC_MSG_RESULT([no]) + AC_MSG_FAILURE([ +This version of the AC@&t@_PYTHON_DEVEL macro +doesn't work properly with versions of Python before +2.1.0. You may need to re-run configure, setting the +variables PYTHON_CPPFLAGS, PYTHON_LDFLAGS, PYTHON_SITE_PKG, +PYTHON_EXTRA_LIBS and PYTHON_EXTRA_LDFLAGS by hand. +Moreover, to disable this check, set PYTHON_NOVERSIONCHECK +to something else than an empty string. +]) + else + AC_MSG_RESULT([skip at user request]) + fi + else + AC_MSG_RESULT([yes]) + fi + + # + # if the macro parameter ``version'' is set, honour it + # + if test -n "$1"; then + AC_MSG_CHECKING([for a version of Python $1]) + ac_supports_python_ver=`$PYTHON -c "import sys, string; \ + ver = string.split(sys.version)[[0]]; \ + print ver $1"` + if test "$ac_supports_python_ver" = "True"; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + AC_MSG_ERROR([this package requires Python $1. +If you have it installed, but it isn't the default Python +interpreter in your system path, please pass the PYTHON_VERSION +variable to configure. See ``configure --help'' for reference. +]) + PYTHON_VERSION="" + fi + fi + + # + # Check if you have distutils, else fail + # + AC_MSG_CHECKING([for the distutils Python package]) + ac_distutils_result=`$PYTHON -c "import distutils" 2>&1` + if test -z "$ac_distutils_result"; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + AC_MSG_ERROR([cannot import Python module "distutils". +Please check your Python installation. The error was: +$ac_distutils_result]) + PYTHON_VERSION="" + fi + + # + # Check for Python include path + # + AC_MSG_CHECKING([for Python include path]) + if test -z "$PYTHON_CPPFLAGS"; then + python_path=`$PYTHON -c "import distutils.sysconfig; \ + print distutils.sysconfig.get_python_inc();"` + if test -n "${python_path}"; then + python_path="-I$python_path" + fi + PYTHON_CPPFLAGS=$python_path + fi + AC_MSG_RESULT([$PYTHON_CPPFLAGS]) + AC_SUBST([PYTHON_CPPFLAGS]) + + # + # Check for Python library path + # + AC_MSG_CHECKING([for Python library path]) + if test -z "$PYTHON_LDFLAGS"; then + # (makes two attempts to ensure we've got a version number + # from the interpreter) + py_version=`$PYTHON -c "from distutils.sysconfig import *; \ + from string import join; \ + print join(get_config_vars('VERSION'))"` + if test "$py_version" = "[None]"; then + if test -n "$PYTHON_VERSION"; then + py_version=$PYTHON_VERSION + else + py_version=`$PYTHON -c "import sys; \ + print sys.version[[:3]]"` + fi + fi + + PYTHON_LDFLAGS=`$PYTHON -c "from distutils.sysconfig import *; \ + from string import join; \ + print '-L' + get_python_lib(0,1), \ + '-L' + os.path.dirname(get_python_lib(0,1)), \ + '-lpython';"`$py_version + fi + AC_MSG_RESULT([$PYTHON_LDFLAGS]) + AC_SUBST([PYTHON_LDFLAGS]) + + # + # Check for site packages + # + AC_MSG_CHECKING([for Python site-packages path]) + if test -z "$PYTHON_SITE_PKG"; then + PYTHON_SITE_PKG=`$PYTHON -c "import distutils.sysconfig; \ + print distutils.sysconfig.get_python_lib(1,0);"` + fi + AC_MSG_RESULT([$PYTHON_SITE_PKG]) + AC_SUBST([PYTHON_SITE_PKG]) + + # + # libraries which must be linked in when embedding + # + AC_MSG_CHECKING(python extra libraries) + if test -z "$PYTHON_EXTRA_LIBS"; then + PYTHON_EXTRA_LIBS=`$PYTHON -c "import distutils.sysconfig; \ + conf = distutils.sysconfig.get_config_var; \ + print conf('LOCALMODLIBS'), conf('LIBS')"` + fi + AC_MSG_RESULT([$PYTHON_EXTRA_LIBS]) + AC_SUBST(PYTHON_EXTRA_LIBS) + + # + # linking flags needed when embedding + # + AC_MSG_CHECKING(python extra linking flags) + if test -z "$PYTHON_EXTRA_LDFLAGS"; then + PYTHON_EXTRA_LDFLAGS=`$PYTHON -c "import distutils.sysconfig; \ + conf = distutils.sysconfig.get_config_var; \ + print conf('LINKFORSHARED')"` + fi + AC_MSG_RESULT([$PYTHON_EXTRA_LDFLAGS]) + AC_SUBST(PYTHON_EXTRA_LDFLAGS) + + # + # final check to see if everything compiles alright + # + AC_MSG_CHECKING([consistency of all components of python development environment]) + AC_LANG_PUSH([C]) + # save current global flags + LIBS="$ac_save_LIBS $PYTHON_LDFLAGS" + CPPFLAGS="$ac_save_CPPFLAGS $PYTHON_CPPFLAGS" + AC_TRY_LINK([ + #include <Python.h> + ],[ + Py_Initialize(); + ],[pythonexists=yes],[pythonexists=no]) + + AC_MSG_RESULT([$pythonexists]) + + if test ! "$pythonexists" = "yes"; then + AC_MSG_ERROR([ + Could not link test program to Python. Maybe the main Python library has been + installed in some non-standard library path. If so, pass it to configure, + via the LDFLAGS environment variable. + Example: ./configure LDFLAGS="-L/usr/non-standard-path/python/lib" + ============================================================================ + ERROR! + You probably have to install the development version of the Python package + for your distribution. The exact name of this package varies among them. + ============================================================================ + ]) + PYTHON_VERSION="" + fi + AC_LANG_POP + # turn back to default flags + CPPFLAGS="$ac_save_CPPFLAGS" + LIBS="$ac_save_LIBS" + + # + # all done! + # +]) + |