diff options
Diffstat (limited to 'contrib/unbound/acx_python.m4')
| -rw-r--r-- | contrib/unbound/acx_python.m4 | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/contrib/unbound/acx_python.m4 b/contrib/unbound/acx_python.m4 new file mode 100644 index 000000000000..4ed298cf9ebd --- /dev/null +++ b/contrib/unbound/acx_python.m4 @@ -0,0 +1,171 @@ +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$PYTHON_VERSION' in your system path. You can use the environment variable 'PYTHON_VERSION=version_number' for an explicit version.]) + PYTHON_VERSION="" + fi + + if test -z "$PYTHON_VERSION"; then + PYTHON_VERSION=`$PYTHON -c "import sys; \ + print(sys.version.split()[[0]])"` + fi + # calculate the version number components. + [ + v="$PYTHON_VERSION" + PYTHON_VERSION_MAJOR=`echo $v | sed 's/[^0-9].*//'` + if test -z "$PYTHON_VERSION_MAJOR"; then PYTHON_VERSION_MAJOR="0"; fi + v=`echo $v | sed -e 's/^[0-9]*$//' -e 's/[0-9]*[^0-9]//'` + PYTHON_VERSION_MINOR=`echo $v | sed 's/[^0-9].*//'` + if test -z "$PYTHON_VERSION_MINOR"; then PYTHON_VERSION_MINOR="0"; fi + v=`echo $v | sed -e 's/^[0-9]*$//' -e 's/[0-9]*[^0-9]//'` + PYTHON_VERSION_PATCH=`echo $v | sed 's/[^0-9].*//'` + if test -z "$PYTHON_VERSION_PATCH"; then PYTHON_VERSION_PATCH="0"; fi + ] + + # For some systems, sysconfig exists, but has the wrong paths, + # on Debian 10, for python 2.7 and 3.7. So, we check the version, + # and for older versions try distutils.sysconfig first. For newer + # versions>=3.10, where distutils.sysconfig is deprecated, use + # sysconfig first and then attempt the other one. + py_distutils_first="no" + if test $PYTHON_VERSION_MAJOR -lt 3; then + py_distutils_first="yes" + fi + if test $PYTHON_VERSION_MAJOR -eq 3 -a $PYTHON_VERSION_MINOR -lt 10; then + py_distutils_first="yes" + fi + + # Check if you have the first module + if test "$py_distutils_first" = "yes"; then m="distutils"; else m="sysconfig"; fi + sysconfig_module="" + AC_MSG_CHECKING([for the $m Python module]) + if ac_modulecheck_result1=`$PYTHON -c "import $m" 2>&1`; then + AC_MSG_RESULT([yes]) + sysconfig_module="$m" + else + AC_MSG_RESULT([no]) + fi + + # if not found, try the other one. + if test -z "$sysconfig_module"; then + if test "$py_distutils_first" = "yes"; then m2="sysconfig"; else m2="distutils"; fi + AC_MSG_CHECKING([for the $m2 Python module]) + if ac_modulecheck_result2=`$PYTHON -c "import $m2" 2>&1`; then + AC_MSG_RESULT([yes]) + sysconfig_module="$m2" + else + AC_MSG_RESULT([no]) + AC_MSG_ERROR([cannot import Python module "$m", or "$m2". + Please check your Python installation. The errors are: + $m + $ac_modulecheck_result1 + $m2 + $ac_modulecheck_result2]) + PYTHON_VERSION="" + fi + fi + if test "$sysconfig_module" = "distutils"; then sysconfig_module="distutils.sysconfig"; fi + + # + # Check for Python include path + # + AC_MSG_CHECKING([for Python include path]) + if test -z "$PYTHON_CPPFLAGS"; then + if test "$sysconfig_module" = "sysconfig"; then + python_path=`$PYTHON -c 'import sysconfig; \ + print(sysconfig.get_path("include"));'` + else + python_path=`$PYTHON -c "import distutils.sysconfig; \ + print(distutils.sysconfig.get_python_inc());"` + fi + 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 "$PYTHON_LDFLAGS"; then + PYTHON_LDFLAGS=`$PYTHON -c "from $sysconfig_module import *; \ + print('-L'+get_config_var('LIBDIR')+' -L'+get_config_var('LIBDEST')+' '+get_config_var('BLDLIBRARY'));"` + fi + AC_MSG_RESULT([$PYTHON_LDFLAGS]) + AC_SUBST([PYTHON_LDFLAGS]) + + if test -z "$PYTHON_LIBDIR"; then + PYTHON_LIBDIR=`$PYTHON -c "from $sysconfig_module import *; \ + print(get_config_var('LIBDIR'));"` + fi + + # + # Check for site packages + # + AC_MSG_CHECKING([for Python site-packages path]) + if test -z "$PYTHON_SITE_PKG"; then + if test "$sysconfig_module" = "sysconfig"; then + PYTHON_SITE_PKG=`$PYTHON -c 'import sysconfig; \ + print(sysconfig.get_path("platlib"));'` + else + PYTHON_SITE_PKG=`$PYTHON -c "import distutils.sysconfig; \ + print(distutils.sysconfig.get_python_lib(1,0));"` + fi + fi + AC_MSG_RESULT([$PYTHON_SITE_PKG]) + AC_SUBST([PYTHON_SITE_PKG]) + + # + # 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 + ac_save_LIBS="$LIBS" + ac_save_CPPFLAGS="$CPPFLAGS" + + LIBS="$LIBS $PYTHON_LDFLAGS" + CPPFLAGS="$CPPFLAGS $PYTHON_CPPFLAGS" + AC_LINK_IFELSE([AC_LANG_PROGRAM([[ + #include <Python.h> + ]],[[ + Py_Initialize(); + ]])],[pythonexists=yes],[pythonexists=no]) + + AC_MSG_RESULT([$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! + # +]) + |