added more build related stuff

+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

-## This is the shared library to be built
+ACLOCAL_AMFLAGS = -I m4
+
 lib_LTLIBRARIES = libmodentropy.la
 
-## Define the source file for the module
 libmodentropy_la_SOURCES = mod_entropy.c mod_entropy_get_entropy_bits.c \
 			   mod_entropy_add_entropy.c
 libmodentropy_la_LDFLAGS = -lrt -lm

 #!/bin/sh
 
 aclocal
+autoconf -f
 libtoolize --copy
 autoheader
 automake --gnu --add-missing --copy

+AC_PREREQ([2.68])
+
+AC_INIT([mod_entropy], [0.1.0], [Georg Hopp <georg@steffers.org])
+AM_INIT_AUTOMAKE
+
+AC_CONFIG_SRCDIR([mod_entropy.c])
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIR([m4])
+
+#AM_SILENT_RULES([yes])
+AC_COPYRIGHT([Copyright © 2012 Georg Hopp])
+AC_REVISION([$Revision: 0.02 $])
+
+# Checks for programs.
+AC_PROG_CC
+AM_PROG_LIBTOOL
+
+# Checks for libraries.
+AC_CHECK_LIB([m], [log])
+AC_CHECK_LIB([rt], [clock_gettime])
+AC_CHECK_LIB([aprutil], [apr_palloc])
+
+# apache apxs linking                                                                     
+AC_SUBST(APXS)                                                                            
+AC_CHECK_PROGS(APXS, apxs)
+
+if test -z "$APXS"; then                                                                  
+  AC_MSG_WARN([[apxs missing]])                                                           
+fi                                                                                        
+                                                                                          
+AC_SUBST(MODULEDIR)                                                                       
+AC_MSG_CHECKING(apache module directory)                                                  
+if test -x "$APXS"; then                                                                  
+  MODULEDIR=`${APXS} -q LIBEXECDIR`                                                       
+else                                                                                      
+  MODULEDIR=/usr/local/lib                                                                
+fi                                                                                        
+AC_MSG_RESULT($MODULEDIR)                     
+
+# Checks for header files.
+AC_CHECK_HEADERS([fcntl.h sys/ioctl.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_TYPE_SIZE_T
+
+# Checks for library functions.
+AC_FUNC_MALLOC
+AC_CHECK_FUNCS([clock_gettime memset])
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT