Revert "Use the AM_PATH_PYTHON macro instead of custom macros"

This reverts commit 23d91efac3.

bindings/python/Makefile.am

@@ -9,6 +9,7 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir) \
 	$(SASL_CFLAGS)
 
+pythondir= $(PY_SITE_PACKAGES)
 nodist_python_DATA = lasso.py
 python_LTLIBRARIES = _lasso.la
 

configure.ac

@@ -324,17 +324,42 @@ fi
 
 dnl need to change quotes to allow square brackets
 changequote(<<, >>)dnl
-PYTHON_VERSION=`$PYTHON --version | sed "s/Python //"`
+PYTHON_VERSION=`$PYTHON -c 'from distutils import sysconfig ; print(sysconfig.get_config_var("VERSION"))'`
 changequote([, ])dnl
 
-AM_PATH_PYTHON([$PYTHON_VERSION],[languages_available="$languages_available python($PYTHON_VERSION)"
-PY_CFLAGS="`${PYTHON}-config --cflags`"
-AC_SUBST(PY_CFLAGS)],[
-enable_python=no
-])
-
 test "x$PYTHON" != "x" || AC_MSG_ERROR(Python must be installed to compile lasso)
 
+AC_MSG_CHECKING(for Python development files)
+dnl Check if we were be able to extract a good version number.
+if test "X$PYTHON_VERSION" != "X"; then
+    changequote(<<, >>)dnl
+    PYTHON_INC=`$PYTHON -c 'from distutils import sysconfig ; print(sysconfig.get_python_inc())'`
+    PYTHON_LIB=`$PYTHON -c 'from distutils import sysconfig ; print(sysconfig.get_python_lib(1))'`
+    changequote([, ])dnl
+    PYTHON_H=$PYTHON_INC/Python.h
+    if test -f $PYTHON_H; then
+            PY_CFLAGS="-I$PYTHON_INC"
+            PY_MAKEFILE=`$PYTHON -c 'from distutils import sysconfig ; print(sysconfig.get_makefile_filename())'`
+            PY_OTHER_LIBS=`$SED -n -e 's/^LIBS=\(.*\)/\1/p' $PY_MAKEFILE`
+            PY_EXTRA_LIBS="$PY_LOCALMODLIBS $PY_BASEMODLIBS $PY_OTHER_LIBS"
+            dnl this extracts the $libdir out of python lib directory,
+            dnl replacing it by our own.
+            PY_SUFFIX_LIB=`echo $PYTHON_LIB | $SED -e 's/.*python/python/'`
+            PY_SITE_PACKAGES="\${libdir}/$PY_SUFFIX_LIB"
+            AC_SUBST(PYTHON)
+            AC_SUBST(PY_LIB_LOC)
+            AC_SUBST(PY_CFLAGS)
+            AC_SUBST(PY_EXTRA_LIBS)
+            AC_SUBST(PY_DYNLOAD)
+            AC_SUBST(PY_LIB_A)
+            AC_SUBST(PY_SITE_PACKAGES)
+            languages_available="$languages_available python($PYTHON_VERSION)"
+    else
+            enable_python=no
+    fi
+else
+	enable_python=no
+fi
 AM_CONDITIONAL([PYTHON_ENABLED],[test "x$enable_python" = "xyes"])
 AC_MSG_RESULT($enable_python)
 AC_SUBST(PYTHON_VERSION)