diff --git a/liblockdev-1.0.3_1.6-gcc-11.0.patch b/liblockdev-1.0.3_1.6-gcc-11.0.patch
new file mode 100644
index 0000000..fe0fd92
--- /dev/null
+++ b/liblockdev-1.0.3_1.6-gcc-11.0.patch
@@ -0,0 +1,15 @@
+--- lockdev-1.0.3/src/ttylock.h.orig	2021-08-24 19:07:37.210579510 +0200
++++ lockdev-1.0.3/src/ttylock.h	2021-08-24 19:07:44.530692451 +0200
+@@ -36,12 +36,6 @@
+ 
+ /* API of the library */
+ 
+-int ttylock (char * devname);
+-int ttywait (char * devname);
+-int ttyunlock (char * devname);
+-int ttylocked (char * devname);
+-
+-
+ static inline int
+ ttylock(char *devname)
+ {
diff --git a/liblockdev.spec b/liblockdev.spec
index 8b3dc19..9bbcccf 100644
--- a/liblockdev.spec
+++ b/liblockdev.spec
@@ -3,13 +3,13 @@
 %define minver %(echo %version | cut -d_ -f2)
 Name:          liblockdev
 Version:       1.0.3_1.6
-Release:       1mamba
+Release:       2mamba
 Summary:       A library to put an exclusive lock to devices
 Group:         System/Kernel and Hardware
 Vendor:        openmamba
 Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
-URL:           http://ftp.debian.org/debian/pool/main/l/lockdev
+URL:           http://ftp.debian.org/debian/pool/main/l/lockdev/
 Source:        http://ftp.debian.org/debian/pool/main/l/lockdev/lockdev_%{majver}.orig.tar.gz
 Patch0:        http://ftp.debian.org/debian/pool/main/l/lockdev/lockdev_%{majver}-%{minver}.diff.gz
 Patch1:        %{name}-1.0.0-rh.patch
@@ -17,10 +17,11 @@ Patch2:        %{name}-1.0.0-shared.patch
 Patch3:        %{name}-1.0.0-signal.patch
 Patch4:        %{name}-1.0.0-cli.patch
 Patch5:        %{name}-1.0.1-checkname.patch
+Patch6:        liblockdev-1.0.3_1.6-gcc-11.0.patch
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
+BuildRequires: glibc-devel
 ## AUTOBUILDREQ-END
-BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
 Lockdev provides a reliable way to put an exclusive lock to devices using _both_ FSSTND and SVr4 methods.
@@ -34,6 +35,8 @@ Requires:      %{name} = %{?epoch:%epoch:}%{version}-%{release}
 Lockdev provides a reliable way to put an exclusive lock to devices using _both_ FSSTND and SVr4 methods.
 This package contains static libraries and header files need for development.
 
+%debug_package
+
 %prep
 %setup -q -n lockdev-%{majver}
 %patch0 -p1
@@ -42,6 +45,7 @@ This package contains static libraries and header files need for development.
 #%patch3 -p1
 #%patch4 -p1
 #%patch5 -p1
+%patch6 -p1
 
 %build
 %make basedir=%{_prefix} CFLAGS="%{optflags} -fPIC" CC="%{_host}-gcc" \
@@ -53,9 +57,14 @@ This package contains static libraries and header files need for development.
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 make install basedir=%{buildroot}%{_prefix} libdir=%{buildroot}%{_libdir}
 
-ln -s liblockdev.so.1.0.1 %{buildroot}%{_libdir}/liblockdev.so.1
+mv %{buildroot}%{_libdir}/liblockdev.%{majver}.so %{buildroot}%{_libdir}/liblockdev.so.%{majver}
+ln -s liblockdev.so.%{majver} %{buildroot}%{_libdir}/liblockdev.so.1
+ln -s liblockdev.so.%{majver} %{buildroot}%{_libdir}/liblockdev.so
+
 install -d %{buildroot}/var/lock/subsys
 
+chmod +x %{buildroot}%{_libdir}/liblockdev.so.%{majver}
+
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 
@@ -82,6 +91,9 @@ fi
 %{_mandir}/man3/*
 
 %changelog
+* Tue Aug 24 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 1.0.3_1.6-2mamba
+- rebuilt with ttylock.h fixes and other specfile fixes
+
 * Sun Nov 16 2014 Silvan Calarco <silvan.calarco@mambasoft.it> 1.0.3_1.6-1mamba
 - update to 1.0.3_1.6