Re: OS-sympathetic installation (fwd)

[Olly Betts]

In message <address@hidden>,
 David Lee writes:
>But the "big picture" is to be able to produce something along the lines of:
>
>   # Directories...
>   $prefix=/usr
>[...]
>
>   # Installables
>   %system all
>   f 0555 root sys ${libdir}/libgdbm.so.2.0.0 .libs/libgdbm.so.2.0.0
>   l 0555 root sys ${libdir}/libgdbm.so.2 libgdbm.so.2.0.0
>[...]
>
>(which particular case happens to be suitable for ESP's "epm" generic
>package manager).  "libtool" would need to be responsible for the lines
>containing "libgdbm".

The simplest approach seems to be to install to a scratch directory, then
build the package from there.  So unpack a tarball from `make dist' and
then do this:

./configure --prefix=/usr
make
make install-strip 'prefix=$SCRATCH_DIR/usr'

For one of my projects I added a rule to build rpms to Makefile.am using
this approach.  I've attached a slightly simplified version (the full
version build sub-rpms).  A similar approach will probably work for any
package manager which can make a package without having to install it.

One wrinkle to consider is that human made packages often have scripts to
run before and after both install and uninstall.  I suspect it's going to be
hard to do this in a package-manager independent way.

Cheers,
Olly

===

spec = ${PACKAGE}-${VERSION}.spec

extra_text = BUGS AUTHORS COPYING NEWS TODO ChangeLog

# this is the "RPM release" - if you repackage the same VERSION, you need to
# increment this
RPM_RELEASE = 1

rpm : dist
        echo Summary: ${SUMMARY} > ${spec}
        echo Name: ${PACKAGE} >> ${spec}
        echo Vendor: ${VENDOR} >> ${spec}
        echo Version: ${VERSION} >> ${spec}
        echo Release: ${RPM_RELEASE} >> ${spec}
        echo Copyright: GPL >> ${spec}
        echo Group: ${GROUP} >> ${spec}
        echo Source: ${DOWNLOAD_URL}/${PACKAGE}-${VERSION}.tar.gz >> ${spec}
        echo URL: ${HOME_URL} >> ${spec}
        echo Packager: ${PACKAGER} >> ${spec}
        echo BuildRoot: /var/tmp/%{name}-buildroot >> ${spec}
        echo "" >> ${spec}
        echo %description >> ${spec}
        cat desc.txt >> ${spec}
        echo "" >> ${spec}
        echo %prep >> ${spec}
        echo %setup >> ${spec}
        echo "" >> ${spec}
        echo %build >> ${spec}
        echo ./configure --prefix=/usr >> ${spec}
        echo make >> ${spec}
        echo "" >> ${spec}
        echo %install >> ${spec}
        echo rm -rf '$$RPM_BUILD_ROOT' >> ${spec}
        echo mkdir '$$RPM_BUILD_ROOT' >> ${spec}
        echo make install-strip 'prefix=$$RPM_BUILD_ROOT/usr' >> ${spec}
        echo "" >> ${spec}
        echo %clean >> ${spec}
        echo rm -rf '$$RPM_BUILD_ROOT' >> ${spec}
        echo "" >> ${spec}
        echo %files >> ${spec}
        echo "%defattr(-,root,root)" >> ${spec}
        echo %doc ${extra_text} >> ${spec}
        echo %doc /usr/doc/${PACKAGE} >> ${spec}
        echo %doc /usr/man >> ${spec}
        echo /usr/bin >> ${spec}
        echo /usr/share/${PACKAGE} >> ${spec}
        #
        echo %_topdir `pwd` > rpmmacros
        echo %_rpmdir `pwd` >> rpmmacros
        echo %_sourcedir `pwd` >> rpmmacros
        echo %_specdir `pwd` >> rpmmacros
        echo %_srcrpmdir `pwd` >> rpmmacros
        echo %_rpmfilename %%{NAME}-%%{VERSION}-%%{RELEASE}.%%{ARCH}.rpm >> 
rpmmacros
        #
        echo macrofiles : `rpm --showrc | sed 's/^macrofiles\> *: 
//p;d'`:`pwd`/rpmmacros > rpmrc
        #
        rpm -ba --clean --rcfile /usr/lib/rpm/rpmrc:`pwd`/rpmrc ${spec}