diff --git a/libptytty/libptytty.spec b/libptytty/libptytty.spec
index 7ddfcfae24..66eed17e47 100644
--- a/libptytty/libptytty.spec
+++ b/libptytty/libptytty.spec
@@ -31,14 +31,14 @@ Distribution: OpenPKG Community
 Class:        EVAL
 Group:        System
 License:      GPL
-Version:      1.8
-Release:      20160306
+Version:      2.0
+Release:      20210828
 
 #   list of sources
 Source0:      http://dist.schmorp.de/libptytty/libptytty-%{version}.tar.gz
 
 #   build information
-BuildPreReq:  OpenPKG, openpkg >= 20160101, gcc, gcc::with_cxx = yes, make
+BuildPreReq:  OpenPKG, openpkg >= 20160101, gcc, gcc::with_cxx = yes, make, cmake
 PreReq:       OpenPKG, openpkg >= 20160101
 
 %description
@@ -56,20 +56,34 @@ PreReq:       OpenPKG, openpkg >= 20160101
     %setup -q
 
 %build
-    CC="%{l_cc}" \
-    CXX="%{l_cxx}" \
-    CFLAGS="%{l_cflags -O}" \
-    CXXFLAGS="%{l_cxxflags -O}" \
-    CPPFLAGS="%{l_cppflags}" \
-    LDFLAGS="%{l_ldflags}" \
-    ./configure \
-        --prefix=%{l_prefix} \
-        --mandir=%{l_prefix}/man \
-        --disable-shared
-    %{l_make} %{l_mflags -O}
+    mkdir build
+    cd build
+    cmake \
+        -Wno-dev \
+        -DCMAKE_BUILD_TYPE="Release" \
+        -DCMAKE_INSTALL_PREFIX="%{l_prefix}" \
+        -DCMAKE_C_COMPILER="%{l_cc}" \
+        -DCMAKE_C_FLAGS="%{l_cflags} %{l_cppflags}" \
+        -DCMAKE_CXX_COMPILER="%{l_cxx}" \
+        -DCMAKE_CXX_FLAGS="%{l_cxxflags} %{l_cppflags}" \
+        -DCMAKE_EXE_LINKER_FLAGS="%{l_ldflags}" \
+        -DBUILD_SHARED_LIBS=OFF \
+        ..
+    %{l_make} %{l_mflags}
 
 %install
-    %{l_make} %{l_mflags} install DESTDIR=$RPM_BUILD_ROOT
+    %{l_shtool} mkdir -f -p -m 755 \
+        $RPM_BUILD_ROOT%{l_prefix}/bin \
+        $RPM_BUILD_ROOT%{l_prefix}/lib \
+        $RPM_BUILD_ROOT%{l_prefix}/include \
+        $RPM_BUILD_ROOT%{l_prefix}/lib/pkgconfig
+    %{l_shtool} install -c -s -m 775 \
+        build/libptytty.a $RPM_BUILD_ROOT%{l_prefix}/lib/
+    %{l_shtool} install -c -m 644 \
+        src/libptytty.h \
+        $RPM_BUILD_ROOT%{l_prefix}/include/
+    %{l_shtool} install -c -m 644 \
+        build/libptytty.pc $RPM_BUILD_ROOT%{l_prefix}/lib/pkgconfig/
     %{l_rpmtool} files -v -ofiles -r$RPM_BUILD_ROOT %{l_files_std}
 
 %files -f files