diff --git a/_service:recompress:tar_scm:ocaml-parmap-20160605.10e2437.tar.xz b/_service:recompress:tar_scm:ocaml-parmap-20160605.10e2437.tar.xz
index 4abedde..ad083d1 100644
--- a/_service:recompress:tar_scm:ocaml-parmap-20160605.10e2437.tar.xz
+++ b/_service:recompress:tar_scm:ocaml-parmap-20160605.10e2437.tar.xz
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:ff88f440acb3209c06c58d882ba328e526753cfd8e9609c10d4505331599594d
-size 62412
+oid sha256:269c8a02b9d99297e5f9cbe196718a6f29a17f1826ab3db9d929eaedcec18456
+size 62428
diff --git a/_service:set_version:ocaml-parmap.spec b/_service:set_version:ocaml-parmap.spec
index 0f95327..b4aeccc 100644
--- a/_service:set_version:ocaml-parmap.spec
+++ b/_service:set_version:ocaml-parmap.spec
@@ -24,15 +24,14 @@ Summary:        Exploit multicore architectures for OCaml programs with minimal
 Url:            http://rdicosmo.github.io/parmap/
 Group:          Development/Libraries/Other
 Source:         %{name}-%{version}.tar.xz
-BuildRequires:  autoconf
-BuildRequires:  automake
 BuildRequires:  ocaml
-BuildRequires:  ocaml-findlib
-BuildRequires:  ocaml-ocamlbuild
+BuildRequires:  ocaml-oasis
 BuildRequires:  ocaml-ocamldoc
-BuildRequires:  ocaml-rpm-macros >= 4.02.1
+BuildRequires:  ocaml-rpm-macros >= 4.03
 BuildRequires:  ocamlfind(bigarray)
+BuildRequires:  ocamlfind(graphics)
 BuildRequires:  ocamlfind(unix)
+BuildRequires:  pkgconfig(x11)
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 # ocaml autodep start for pkg: ocaml-parmap
 # hardcoded rpm dependency for pre 12.1 to compensate for lack of ocaml() provides/requires
@@ -64,29 +63,61 @@ developing applications that use %{name}.
 %setup -q
 
 %build
-autoreconf -fi -I m4
-%configure
-o=
-make \
-	LIBDIR=${o}%{_libdir}/ocaml \
-	BINDIR=${o}%{_bindir} \
-	MANDIR=${o}%{_mandir}/man3 \
-	%{?_smp_mflags}
+echo -n > config.h
+if grep -w sched_setaffinity /usr/include/sched.h
+then
+tee -a config.h <<_EOF_
+#define HAVE_DECL_SCHED_SETAFFINITY 1
+_EOF_
+fi
+rm -fv setup.ml myocamlbuild.ml META* _* */_*
+# obs service changes every ^Version line ...
+sh -c "sed 's/^Version.*/Version: %{version}/' | tee _oasis" <<_EOF_
+OASISFormat: 0.4
+Name:        parmap
+Version:     20160605.10e2437
+Synopsis:    library to exploit multicore architectures (parallel programming)
+Authors:     Marco Danelutto and Roberto Di Cosmo
+License:     LGPL-2
+LicenseFile: LICENSE
+Plugins:     META(`oasis version`)
+BuildTools:  ocamlbuild
+
+Library parmap
+  Path: .
+  Install: true
+  Modules: Parmap
+  CSources: bytearray_stubs.c, setcore_stubs.c, config.h
+  CCOpt: -Wall -O2 -g -I$PWD -Werror -D_GNU_SOURCE
+
+Document parmap
+  Title:                API reference for parmap
+  Type:                 ocamlbuild
+  BuildTools+:          ocamldoc
+  InstallDir:           \$htmldir
+  Install:              true
+  XOCamlbuildPath:      .
+  XOCamlbuildLibraries: parmap
+
+Executable "%{name}-mandels"
+  Install: true
+  Path: example
+  MainIs: mandels.ml
+  CompiledObject: best
+  BuildDepends: parmap, graphics, unix, bigarray
+
+_EOF_
+%oasis_setup
+%ocaml_oasis_configure --enable-docs
+%ocaml_oasis_build
+%ocaml_oasis_doc
 
 %install
-o=%{buildroot}
-env \
-make \
-	install \
-	LIBDIR=${o}%{_libdir}/ocaml \
-	BINDIR=${o}%{_bindir} \
-	MANDIR=${o}%{_mandir}/man3 \
-	DESTDIR=%{buildroot} \
-	%{?_smp_mflags}
+%ocaml_oasis_findlib_install
 #
 mkdir -vp %{buildroot}/etc/ld.so.conf.d/
 tee %{buildroot}/etc/ld.so.conf.d/%{name}.conf <<_EOF_
-%{_libdir}/ocaml/stublibs
+%{_libdir}/ocaml/parmap
 _EOF_
 #
 
@@ -98,25 +129,29 @@ _EOF_
 %defattr(-,root,root)
 %doc README.md LICENSE
 /etc/ld.so.conf.d/*.conf
+%{_bindir}/*
 %dir %{_libdir}/ocaml
 %dir %{_libdir}/ocaml/*
+%if %{ocaml_native_compiler}
+%{_libdir}/ocaml/*/*.cmxs
+%endif
 %{_libdir}/ocaml/*/*.so
-%{_libdir}/ocaml/*/*.so.owner
 
 %files devel
 %defattr(-,root,root,-)
 %doc LICENSE
-%{_mandir}/*/*
-%dir %{_libdir}/ocaml
+%{oasis_docdir_html}
 %dir %{_libdir}/ocaml/*
 %{_libdir}/ocaml/*/*.a
 %if %{ocaml_native_compiler}
 %{_libdir}/ocaml/*/*.cmx
 %{_libdir}/ocaml/*/*.cmxa
-%{_libdir}/ocaml/*/*.cmxs
 %endif
+%{_libdir}/ocaml/*/*.annot
 %{_libdir}/ocaml/*/*.cma
 %{_libdir}/ocaml/*/*.cmi
+%{_libdir}/ocaml/*/*.cmt
+%{_libdir}/ocaml/*/*.cmti
 %{_libdir}/ocaml/*/*.mli
 %{_libdir}/ocaml/*/META
 
diff --git a/ocaml-parmap.spec b/ocaml-parmap.spec
index 51703b5..dc99273 100644
--- a/ocaml-parmap.spec
+++ b/ocaml-parmap.spec
@@ -24,15 +24,14 @@ Summary:        Exploit multicore architectures for OCaml programs with minimal
 Url:            http://rdicosmo.github.io/parmap/
 Group:          Development/Libraries/Other
 Source:         %{name}-%{version}.tar.xz
-BuildRequires:  autoconf
-BuildRequires:  automake
 BuildRequires:  ocaml
-BuildRequires:  ocaml-findlib
-BuildRequires:  ocaml-ocamlbuild
+BuildRequires:  ocaml-oasis
 BuildRequires:  ocaml-ocamldoc
-BuildRequires:  ocaml-rpm-macros >= 4.02.1
+BuildRequires:  ocaml-rpm-macros >= 4.03
 BuildRequires:  ocamlfind(bigarray)
+BuildRequires:  ocamlfind(graphics)
 BuildRequires:  ocamlfind(unix)
+BuildRequires:  pkgconfig(x11)
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 # ocaml autodep start for pkg: ocaml-parmap
 # hardcoded rpm dependency for pre 12.1 to compensate for lack of ocaml() provides/requires
@@ -64,29 +63,61 @@ developing applications that use %{name}.
 %setup -q
 
 %build
-autoreconf -fi -I m4
-%configure
-o=
-make \
-	LIBDIR=${o}%{_libdir}/ocaml \
-	BINDIR=${o}%{_bindir} \
-	MANDIR=${o}%{_mandir}/man3 \
-	%{?_smp_mflags}
+echo -n > config.h
+if grep -w sched_setaffinity /usr/include/sched.h
+then
+tee -a config.h <<_EOF_
+#define HAVE_DECL_SCHED_SETAFFINITY 1
+_EOF_
+fi
+rm -fv setup.ml myocamlbuild.ml META* _* */_*
+# obs service changes every ^Version line ...
+sh -c "sed 's/^Version.*/Version: %{version}/' | tee _oasis" <<_EOF_
+OASISFormat: 0.4
+Name:        parmap
+Version:     20160605.10e2437
+Synopsis:    library to exploit multicore architectures (parallel programming)
+Authors:     Marco Danelutto and Roberto Di Cosmo
+License:     LGPL-2
+LicenseFile: LICENSE
+Plugins:     META(`oasis version`)
+BuildTools:  ocamlbuild
+
+Library parmap
+  Path: .
+  Install: true
+  Modules: Parmap
+  CSources: bytearray_stubs.c, setcore_stubs.c, config.h
+  CCOpt: -Wall -O2 -g -I$PWD -Werror -D_GNU_SOURCE
+
+Document parmap
+  Title:                API reference for parmap
+  Type:                 ocamlbuild
+  BuildTools+:          ocamldoc
+  InstallDir:           \$htmldir
+  Install:              true
+  XOCamlbuildPath:      .
+  XOCamlbuildLibraries: parmap
+
+Executable "%{name}-mandels"
+  Install: true
+  Path: example
+  MainIs: mandels.ml
+  CompiledObject: best
+  BuildDepends: parmap, graphics, unix, bigarray
+
+_EOF_
+%oasis_setup
+%ocaml_oasis_configure --enable-docs
+%ocaml_oasis_build
+%ocaml_oasis_doc
 
 %install
-o=%{buildroot}
-env \
-make \
-	install \
-	LIBDIR=${o}%{_libdir}/ocaml \
-	BINDIR=${o}%{_bindir} \
-	MANDIR=${o}%{_mandir}/man3 \
-	DESTDIR=%{buildroot} \
-	%{?_smp_mflags}
+%ocaml_oasis_findlib_install
 #
 mkdir -vp %{buildroot}/etc/ld.so.conf.d/
 tee %{buildroot}/etc/ld.so.conf.d/%{name}.conf <<_EOF_
-%{_libdir}/ocaml/stublibs
+%{_libdir}/ocaml/parmap
 _EOF_
 #
 
@@ -98,25 +129,29 @@ _EOF_
 %defattr(-,root,root)
 %doc README.md LICENSE
 /etc/ld.so.conf.d/*.conf
+%{_bindir}/*
 %dir %{_libdir}/ocaml
 %dir %{_libdir}/ocaml/*
+%if %{ocaml_native_compiler}
+%{_libdir}/ocaml/*/*.cmxs
+%endif
 %{_libdir}/ocaml/*/*.so
-%{_libdir}/ocaml/*/*.so.owner
 
 %files devel
 %defattr(-,root,root,-)
 %doc LICENSE
-%{_mandir}/*/*
-%dir %{_libdir}/ocaml
+%{oasis_docdir_html}
 %dir %{_libdir}/ocaml/*
 %{_libdir}/ocaml/*/*.a
 %if %{ocaml_native_compiler}
 %{_libdir}/ocaml/*/*.cmx
 %{_libdir}/ocaml/*/*.cmxa
-%{_libdir}/ocaml/*/*.cmxs
 %endif
+%{_libdir}/ocaml/*/*.annot
 %{_libdir}/ocaml/*/*.cma
 %{_libdir}/ocaml/*/*.cmi
+%{_libdir}/ocaml/*/*.cmt
+%{_libdir}/ocaml/*/*.cmti
 %{_libdir}/ocaml/*/*.mli
 %{_libdir}/ocaml/*/META