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# Tested on RHEL 6 & 7
# If possible, avoid creating packages as 'root' as this is quite dangerous because we # could delete or overwrite OS existing files. # Setup the folder structure. Placed on the HOME folder of a user without admin privileges, # run following command: # As a non-root user, create a build tree based on a ~/rpmbuild/ directory: user@myhost:/home/user#> mkdir -p ~/rpmbuild/{BUILD,BUILDROOT,RPMS,SOURCES,SPECS,SRPMS} user@myhost:/home/user#> echo '%_topdir %(echo $HOME)/rpmbuild' > ~/.rpmmacros # Given a simple package like the one we've built in # https://sites.google.com/site/syscookbook/rhel/rhel-rpm-build # Rebuilding the RPM from SRPM # ------------------------------------------------------------------------------------------ # If you only want to recompile a source rpm, without doing any changes, do the following: user@myhost:/home/user#> rpmbuild --rebuild </path_to_rpm>/HelloWorld-1.0-1.el6.src.rpm # Your new package will be under /home/user/rpmbuild/RPMS/<arch>/ # Patching the SRPM # ------------------------------------------------------------------------------------------ # First of all, install the source RPM user@myhost:/home/user#> rpm -ivh </path_to_rpm>/HelloWorld-1.0-1.el6.src.rpm 1:HelloWorld ########################################### [100%] # This will restore a specfile under /home/user/rpmbuild/SPECS, and a source tarball, as # well as any other other patches or additional files, under /home/user/rpmbuild/SOURCES user@myhost:/home/user#> ll rpmbuild/SPECS/ total 4 -rw-rw-r-- 1 user group 776 Sep 29 11:48 HelloWorld-1.0.spec user@myhost:/home/user#> ll rpmbuild/SOURCES/ total 4 -rw-rw-r-- 1 user group 210 Sep 29 11:45 HelloWorld-1.0.tar.gz # Extract the sources, make a copy of the source and make your changes user@myhost:/home/user#> cd rpmbuild/SOURCES user@myhost:/home/user/rpmbuild/SOURCES#> tar zxvf HelloWorld-1.0.tar.gz HelloWorld-1.0/ HelloWorld-1.0/HelloWorld.sh HelloWorld-1.0/configure user@myhost:/home/user/rpmbuild/SOURCES#> cp -pr HelloWorld-1.0 HelloWorld-1.0.p user@myhost:/home/user/rpmbuild/SOURCES#> vi HelloWorld-1.0.p/HelloWorld.sh echo "Hello NEW world!" # After the .new source tree is modified, generate the patch. To generate the patch, # run diff against the entire new and original source trees: user@myhost:/home/user/rpmbuild/SOURCES#> diff -uNrp HelloWorld-1.0 HelloWorld-1.0.p > ../SOURCES/mynewpatch.patch # Now, we have to add the patch to the specfile. There may be other patches already, # and they are applied in order of their number in the specfile, so we'll have to # number ours appropriately. user@myhost:/home/user/rpmbuild/SOURCES#> cd .. # Add a line after "Source 0" line like following one (respect appropriate patch number) user@myhost:/home/user/rpmbuild#> vi SPECS/HelloWorld-1.0.spec Patch0: mynewpatch.patch # After that, add a patch command that corresponds with the patch line above, usually # after "%setup" line: [...] %prep %setup -q %patch0 -p1 [...] # Rebuilding the package user@myhost:/home/user/rpmbuild#> rpmbuild -ba SPECS/HelloWorld-1.0.spec user@myhost:/home/user/rpmbuild#> cd RPMS/noarch user@myhost:/home/user/rpmbuild/RPMS/noarch#> ll total 4 -rw-rw-r-- 1 user group 2092 Sep 29 12:52 HelloWorld-1.0-1.el6.noarch.rpm user@myhost:/home/user/rpmbuild/RPMS/noarch#> rpm -qpl HelloWorld-1.0-1.el6.noarch.rpm /opt/HelloWorld/HelloWorld.sh # Let's install our new package (as 'root') root@myhost:/root#> rpm -ihv /home/user/rpmbuild/RPMS/noarch/HelloWorld-1.0-1.el6.noarch.rpm Preparing... ########################################### [100%] package HelloWorld-1.0-1.el6.noarch is already installed file /opt/HelloWorld/HelloWorld.sh from install of HelloWorld-1.0-1.el6.noarch conflicts with file from package HelloWorld-1.0-1.el6.noarch root@myhost:/root#> rpm --replacefiles --replacepkgs -ihv /home/user/rpmbuild/RPMS/noarch/HelloWorld-1.0-1.el6.noarch.rpm Preparing... ########################################### [100%] 1:HelloWorld ########################################### [100%] root@myhost:/root#> /opt/HelloWorld/HelloWorld.sh Hello NEW world! |