diff --git a/Makefile.am b/Makefile.am
index 16742b8..e563215 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,3 +1,5 @@
 SUBDIRS = lib utils physics examples
 
+bin_SCRIPTS=latan-config
+
 ACLOCAL_AMFLAGS = -I .buildutils/m4
diff --git a/configure.ac b/configure.ac
index 134f26f..e610b1d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -53,9 +53,6 @@ AC_ARG_WITH([latcore],
     [use this option for a non-standard install prefix of the LatCore library])],
     [AM_CXXFLAGS="$AM_CXXFLAGS -I$with_latcore/include"]
     [AM_LDFLAGS="$AM_LDFLAGS -L$with_latcore/lib"])
-CFLAGS="$AM_CFLAGS $CFLAGS"
-CXXFLAGS="$AM_CXXFLAGS $CXXFLAGS"
-LDFLAGS="$AM_LDFLAGS $LDFLAGS"
 
 # Get compilers informations
 AX_COMPILER_VENDOR
@@ -78,6 +75,10 @@ AC_DEFINE_UNQUOTED([GXX_VERSION],["$GXX_VERSION"],
 			[version of g++ that will compile the code])
 
 # Checks for libraries.
+CXXFLAGS_CPY=$CXXFLAGS
+LDFLAGS_CPY=$LDFLAGS
+CXXFLAGS="$AM_CXXFLAGS $CXXFLAGS"
+LDFLAGS="$AM_LDFLAGS $LDFLAGS"
 AC_CHECK_LIB([m],[cos],[],[AC_MSG_ERROR([libm library not found])])
 AC_CHECK_LIB([gslcblas],[cblas_dgemm],[],
              [AC_MSG_ERROR([GSL CBLAS library not found])])
@@ -90,12 +91,8 @@ AC_CHECK_LIB([nlopt_cxx],[nlopt_create],
     [LIBS="$LIBS -lnlopt_cxx"],[])
 AM_CONDITIONAL([HAVE_NLOPT], [test x$have_nlopt = xtrue])
 AC_CHECK_LIB([hdf5_cpp],[H5Fopen],
-    [AC_DEFINE([HAVE_HDF5],
-    [1],
-    [Define to 1 if you have the `HDF5' library (-lhdf5_cpp).])]
-    [have_hdf5=true]
-    [LIBS="$LIBS -lhdf5_cpp -lhdf5"],[],[-lhdf5])
-AM_CONDITIONAL([HAVE_HDF5], [test x$have_hdf5 = xtrue])
+    [LIBS="$LIBS -lhdf5_cpp -lhdf5"],
+    [AC_MSG_ERROR([HDF5 library not found])], [-lhdf5])
 SAVED_LDFLAGS=$LDFLAGS
 LDFLAGS="$LDFLAGS -lMinuit2"
 AC_MSG_CHECKING([for ROOT::Minuit2::BasicMinimumError in -lMinuit2]);
@@ -123,24 +120,44 @@ AC_LINK_IFELSE(
     [AC_MSG_RESULT([no])]
     [AC_MSG_ERROR([LatCore library not found])])
 LDFLAGS=$SAVED_LDFLAGS
+CXXFLAGS=$CXXFLAGS_CPY
+LDFLAGS=$LDFLAGS_CPY
 
 # Checks for header files.
 AC_HEADER_STDC
 
+cwd=`pwd -P`; cd ${srcdir}; abs_srcdir=`pwd -P`; cd ${cwd}
+LATAN_CXXFLAGS="$AM_CXXFLAGS $CXXFLAGS"
+LATAN_LDFLAGS="$AM_LDFLAGS $LDFLAGS"
+LATAN_LIBS=$LIBS
+LATAN_SHORT_SHA=`git rev-parse --short HEAD`
+LATAN_SHA=`git rev-parse HEAD`
+LATAN_BRANCH=`git rev-parse --abbrev-ref HEAD`
+AM_CXXFLAGS="-I${abs_srcdir}/lib $AM_CXXFLAGS"
+AM_CFLAGS="-I${abs_srcdir}/lib $AM_CFLAGS"
+CXXFLAGS="$AM_CXXFLAGS $CXXFLAGS"
+LDFLAGS="$AM_LDFLAGS $LDFLAGS"
 AC_SUBST([LIBS])
-AC_SUBST([AM_CFLAGS])
+AC_SUBST([AM_CXXFLAGS])
 AC_SUBST([AM_LDFLAGS])
+AC_SUBST([LATAN_CXXFLAGS])
+AC_SUBST([LATAN_LDFLAGS])
+AC_SUBST([LATAN_LIBS])
+AC_SUBST([LATAN_SHA])
+AC_SUBST([LATAN_BRANCH])
 
-AC_CONFIG_FILES([Makefile lib/Makefile utils/Makefile physics/Makefile 
-                 examples/Makefile])
+AC_CONFIG_FILES([latan-config], [chmod +x latan-config])
+AC_CONFIG_FILES([Makefile])
+AC_CONFIG_FILES([lib/Makefile])
+AC_CONFIG_FILES([utils/Makefile])
+AC_CONFIG_FILES([physics/Makefile])
+AC_CONFIG_FILES([examples/Makefile])
 AC_OUTPUT
 
 echo "*********************************************"
 echo "* ${PACKAGE_NAME} v${VERSION}" build options
 echo "*********************************************"
 echo "* C++ compiler     : $CXX"
-echo "* HDF5 support     : `test x$HAVE_HDF5_TRUE = 'x'   && echo yes \
-                                                          || echo no`"
 echo "* Minuit minimizers: `test x$HAVE_MINUIT_TRUE = 'x' && echo yes \
                                                           || echo no`"
 echo "* NLopt minimizers : `test x$HAVE_NLOPT_TRUE = 'x'  && echo yes \
diff --git a/lib/Io.cpp b/lib/Io.cpp
index 908cf4b..32812e0 100644
--- a/lib/Io.cpp
+++ b/lib/Io.cpp
@@ -20,9 +20,7 @@
 #include <LatAnalyze/Io.hpp>
 #include <LatAnalyze/includes.hpp>
 #include <LatAnalyze/AsciiFile.hpp>
-#ifdef HAVE_HDF5
 #include <LatAnalyze/Hdf5File.hpp>
-#endif
 
 using namespace std;
 using namespace Latan;
@@ -42,12 +40,10 @@ unique_ptr<File> Io::open(const std::string &fileName, const unsigned int mode)
     {
         return unique_ptr<File>(new AsciiFile(fileName, mode));
     }
-#ifdef HAVE_HDF5
     else if (ext == "h5")
     {
         return unique_ptr<File>(new Hdf5File(fileName, mode));
     }
-#endif
     else
     {
         LATAN_ERROR(Io, "unknown file extension '" + ext + "'");
diff --git a/lib/Makefile.am b/lib/Makefile.am
index a4199d3..d284ffc 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -35,6 +35,7 @@ libLatAnalyze_la_SOURCES = \
     GslHybridRootFinder.cpp\
     GslMinimizer.cpp       \
     GslQagsIntegrator.cpp  \
+    Hdf5File.cpp           \
     Histogram.cpp          \
     includes.hpp           \
     Io.cpp                 \
@@ -69,6 +70,7 @@ libLatAnalyze_la_HEADERS = \
     GslHybridRootFinder.hpp\
     GslMinimizer.hpp       \
     GslQagsIntegrator.hpp  \
+    Hdf5File.hpp           \
     Histogram.hpp          \
     Integrator.hpp         \
     Io.hpp                 \
@@ -87,10 +89,6 @@ libLatAnalyze_la_HEADERS = \
     StatArray.hpp          \
     XYSampleData.hpp       \
     XYStatData.hpp
-if HAVE_HDF5
-    libLatAnalyze_la_SOURCES += Hdf5File.cpp
-    libLatAnalyze_la_HEADERS += Hdf5File.hpp
-endif
 if HAVE_MINUIT
     libLatAnalyze_la_SOURCES += MinuitMinimizer.cpp
     libLatAnalyze_la_HEADERS += MinuitMinimizer.hpp
diff --git a/utils/resample.cpp b/utils/resample.cpp
index c3f6a66..15c5dda 100644
--- a/utils/resample.cpp
+++ b/utils/resample.cpp
@@ -25,12 +25,7 @@
 #ifndef DEF_NSAMPLE
 #define DEF_NSAMPLE "100"
 #endif
-
-#ifdef HAVE_HDF5
 #define DEF_FMT "h5"
-#else
-#define DEF_FMT "sample"
-#endif
 
 using namespace std;
 using namespace Latan;