fix missing configure check for Python.h (bug #3092663)

    - thanks to Zoltan Kovacs for reporting this problem!

ChangeLog

@@ -1,4 +1,6 @@
 current:
+  * fix missing configure check for Python.h (bug #3092663)
+    - thanks to Zoltan Kovacs for reporting this problem!
   * fix C++ wrapper missing Symbol.quality (bug #3076524)
     - thanks to Rudy Melli for pointing this out!
   * fix C++ wrapper bugs (bug #3396068)

configure.ac

@@ -436,7 +436,16 @@ AS_IF([test "x$with_python" != "xno"],
      [test -x "$PYTHON-config"],
      [PYTHON_CFLAGS=`$PYTHON-config --cflags`],
      [PYTHON_CFLAGS=`$PYTHON -c 'import distutils.sysconfig as s; print " ".join(s.get_config_vars("CFLAGS")) + " -I"+s.get_python_inc() + " -I"+s.get_python_inc(plat_specific=True)'`])
-dnl FIXME now should check that #include <Python.h> compiles
+
+dnl check that #include <Python.h> compiles (bug #3092663)
+   CPPFLAGS_save="$CPPFLAGS"
+   CPPFLAGS="$CPPFLAGS $PYTHON_CFLAGS"
+   AC_CHECK_HEADER([Python.h], [], [AC_MSG_ERROR([dnl
+Python module enabled, but unable to compile Python.h.
+Install the development package for python-$am_cv_python_version, or configure
+--without-python to disable the python bindings.dnl
+])])
+   CPPFLAGS="$CPPFLAGS_save"
 
    AS_IF([test "x$with_gtk" = "xyes"],
      [PKG_CHECK_MODULES([PYGTK], [pygtk-2.0])