diff --git a/coin.spec b/coin.spec
index 79459e2..bbb2b16 100644
--- a/coin.spec
+++ b/coin.spec
@@ -1,6 +1,6 @@
 Name:          coin
 Version:       4.0.3
-Release:       1mamba
+Release:       2mamba
 Summary:       An OpenGL-based, 3D graphics library
 Group:         Development/Libraries
 Vendor:        openmamba
@@ -16,6 +16,7 @@ BuildRequires: libSM-devel
 BuildRequires: libX11-devel
 BuildRequires: libXext-devel
 BuildRequires: libgcc
+BuildRequires: libglu-devel
 BuildRequires: libglvnd-devel
 BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
@@ -45,22 +46,19 @@ This package contains libraries and header files for developing applications tha
 
 %prep
 %setup -q -n coin
-sed -i "s,| arm-\*  |,| aarch64-\* | arm-\*  |," cfg/config.sub
 
 %build
-%configure \
-   --disable-debug
+%cmake
 
-%make
+%cmake_build
 
 %install
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
-%makeinstall
+%cmake_install
 
 %clean
 [ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
 
-
 %files
 %defattr(-,root,root)
 %dir %{_datadir}/Coin
@@ -89,11 +87,15 @@ sed -i "s,| arm-\*  |,| aarch64-\* | arm-\*  |," cfg/config.sub
 %dir %{_includedir}/Inventor
 %{_includedir}/Inventor/*
 %{_libdir}/libCoin.so
-%{_datadir}/aclocal/coin.m4
-%{_mandir}/man1/coin-config.1*
 %{_libdir}/pkgconfig/Coin.pc
+%dir %{_libdir}/cmake/Coin-%{version}
+%{_libdir}/cmake/Coin-%{version}/coin-*.cmake
+
 
 %changelog
+* Sat Nov 02 2024 Silvan Calarco <silvan.calarco@mambasoft.it> 4.0.3-2mamba
+- rebuilt with cmake
+
 * Fri Sep 06 2024 Automatic Build System <autodist@openmamba.org> 4.0.3-1mamba
 - automatic version update by autodist