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22 Feb 2017 : Building an unhobbled OpenSSL 1.0.2j RPM for Fedora 25 #
For most people it makes sense to use the latest (at time of writing) 1.0.2k version of OpenSSL on Fedora 25 (in which case, see my other blog post). However, if for some reason you need a slightly earlier build (version 1.0.2j to be precise), then you can switch out the middle part of the process I wrote about for 1.0.2k with the following set of commands.
# Install the fedora RPM with all the standard Red Hat patches
cd ~/rpmbuild/SRPMS
wget http://dl.fedoraproject.org/pub/fedora/linux/releases/25/Everything/source/tree/Packages/o/openssl-1.0.2j-1.fc25.src.rpm
rpm -i openssl-1.0.2j-1.fc25.src.rpm
# Install the stock OpenSSL source which doesn’t have the ECC code removed
cd ../SOURCES
wget https://www.openssl.org/source/old/1.0.2/openssl-1.0.2j.tar.gz
# Patch the spec file to avoid all of the nasty ECC-destroying patches
cd ../SPECS
wget http://www.flypig.co.uk/dnload/dnload/pico/openssl.spec.ec-1.0.2j.patch
patch -p0 < openssl.spec.ec-1.0.2j.patch
# And build
rpmbuild -bb openssl.spec
And to install the resulting RPMs:
cd ~/rpmbuild/RPMS/$(uname -i)
rpm -Uvh --force openssl-1.0.2j*rpm openssl-devel-1.0.2j*rpm openssl-libs-1.0.2j*rpm
I’m not sure why you might want to use 1.0.2j over 1.0.2k, but since I already had the patch lying around, it seemed sensible to make it available.
 

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