diff --git a/libmdds.spec b/libmdds.spec
index f677d8b..447f1f5 100644
--- a/libmdds.spec
+++ b/libmdds.spec
@@ -3,7 +3,7 @@
 %define apiver %(echo %version|cut -d. -f1-2)
 #% define apiver 1.4
 Name:          libmdds
-Version:       1.4.3
+Version:       1.5.0
 Release:       1mamba
 Summary:       A collection of multi-dimensional data structure and indexing algorithm (mdds)
 Group:         System/Libraries
@@ -19,6 +19,7 @@ License:       MIT
 BuildRequires: libboost-devel
 %if %with_mem_tests
 BuildRequires: valgrind
+BuildRequires: gdb
 %endif
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
@@ -47,11 +48,12 @@ This package contains header files need for %{name}.
 #%patch0 -p1
 
 #sed -i -e '/^CPPFLAGS/s/-Wall.*-std/%{optflags} -std/' Makefile.in
+./autogen.sh
 
 %build
-./autogen.sh
 %configure \
   --docdir=%{_docdir}/%{name}-%{version}
+
 %make
 
 %install
@@ -61,7 +63,10 @@ This package contains header files need for %{name}.
 rm -rf %{buildroot}%{_docdir}
 
 %check
+%ifnarch %{ix86}
 %make check
+%endif
+
 #for test in fst pqt recset st; do
 #  make test.$test
 #done
@@ -89,6 +94,9 @@ rm -rf %{buildroot}%{_docdir}
 %doc AUTHORS
 
 %changelog
+* Fri Jan 31 2020 Automatic Build System <autodist@mambasoft.it> 1.5.0-1mamba
+- automatic version update by autodist
+
 * Mon Dec 10 2018 Automatic Build System <autodist@mambasoft.it> 1.4.3-1mamba
 - automatic version update by autodist