What's this aclocal error mean?

[Skip Montanaro]

I just checked out my project fresh from SF CVS.  Running aclocal gives me
this error:

    % aclocal
    aclocal: configure.in: 50: macro `AM_CHECK_PYTHON_HEADERS' not found in library

Line 50 is indeed the place where AM_CHECK_PYTHON_HEADERS is called, but it
is defined starting on line 26 as

    AC_DEFUN([AM_CHECK_PYTHON_HEADERS],
    [AC_REQUIRE([AM_PATH_PYTHON])
    AC_MSG_CHECKING(for Python.h location)
    dnl deduce PYTHON_INCLUDES
    py_prefix=`$PYTHON -c "import sys; print sys.prefix"`
    py_exec_prefix=`$PYTHON -c "import sys; print sys.exec_prefix"`
    PYTHON_INCLUDES="-I${py_prefix}/include/python${PYTHON_VERSION}"
    if test "$py_prefix" != "$py_exec_prefix"; then
      PYTHON_INCLUDES="$PYTHON_INCLUDES 
-I${py_exec_prefix}/include/python${PYTHON_VERSION}"
    fi
    AC_SUBST(PYTHON_INCLUDES)
    dnl check if the headers exist:
    save_CPPFLAGS="$CPPFLAGS"
    CPPFLAGS="$CPPFLAGS $PYTHON_INCLUDES"
    AC_TRY_CPP([#include <Python.h>],dnl
    [AC_MSG_RESULT($PYTHON_INCLUDES)
    $1],dnl
    [AC_MSG_RESULT(no)
    $2])
    CPPFLAGS="$save_CPPFLAGS"
    ])

Why is aclocal upset?

Thx,

-- 
Skip Montanaro ([EMAIL PROTECTED] - http://www.mojam.com/)