Stop shipping a pre-compiled ibverbs.c

Only EL6 needed this, lets just make a new enough Cython in the docker
container so it can be built instead.

Building the .c with newer versions of the IB headers results in a module
that is un-buildable on older distros anyhow due to new IBV constants.

debian/rules

@@ -4,8 +4,6 @@ PACKAGE = $(firstword $(shell dh_listpackages))
 TMP     = $(CURDIR)/debian/$(PACKAGE)
 
 override_dh_auto_build:
-	# Force rebuild of cython output for Debian
-	rm rdma/ibverbs.c
 	dh_auto_build
 	python setup.py docs
 

docker/build-centos-6.Dockerfile

@@ -11,3 +11,8 @@ RUN yum install -y \
 	rpm-build \
 	tar \
 	&& yum clean all
+
+ADD http://vault.centos.org/7.1.1503/os/Source/SPackages/Cython-0.19-3.el7.src.rpm /tmp/
+RUN rpmbuild --rebuild /tmp/Cython-0.19-3.el7.src.rpm && \
+    rpm -U /root/rpmbuild/RPMS/x86_64/Cython-0.19-3.el6.x86_64.rpm && \
+    rm -rf /root/rpmbuild

python-rdma.spec

@@ -12,9 +12,7 @@ BuildRequires: gcc
 BuildRequires: libibverbs-devel
 BuildRequires: python-devel
 BuildRequires: python-sphinx
-%if 0%{?rhel} >= 7
 BuildRequires: Cython
-%endif
 
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root
 
@@ -39,9 +37,6 @@ libraries to provide ibverbs functionality.
 echo "__git_head__ = '"`zcat %{sources} | git get-tar-commit-id`"'" >> rdma/__init__.py
 
 %build
-%if 0%{?rhel} >= 7
-rm rdma/ibverbs.c
-%endif
 env CFLAGS="$RPM_OPT_FLAGS" python setup.py build
 python setup.py docs