[Openswan Users] HTML docs won't install in /usr

[tomk at runbox.com]

I'm trying to install 2.3.1 in /usr instead of /usr/local. As there's no ./configure to take prefix=/usr, I've edited Makefile.inc and changed this line

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# "local" part of tree, used in building other pathnames
INC_USRLOCAL=/usr/local
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to this

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# "local" part of tree, used in building other pathnames
INC_USRLOCAL=/usr
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Everything installs as expected, except the HTML documentation. The directory /usr/share/doc/openswan is not created.

The build system has htmldoc and lynx installed, as required by doc/Makefile. Installation in /usr/local works perfectly, so it appears that the change described above does something to the doc install, even though it works for everything else. I can see in Makefile.inc where DOCDIR is defined, as follows:

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# sample configuration files go into
INC_DOCDIR?=share/doc
FINALEXAMPLECONFDIR=${INC_USRLOCAL}/${INC_DOCDIR}/openswan
EXAMPLECONFDIR=${DESTDIR}${FINALEXAMPLECONFDIR}

FINALDOCDIR?=${INC_USRLOCAL}/${INC_DOCDIR}/openswan
DOCDIR=${DESTDIR}${FINALDOCDIR}
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so with my modification, DOCDIR is /usr/share/doc/openswan, as required.

Then in doc/Makefile, in the install: section, I can see the following line:

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@mkdir -p ${DOCDIR}
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So the directory should be created - right? Can anyone suggest a reason why it isn't? Or where I should look for a possible solution?