Re: Getting pkgconfig to a specific location

[Thomas Dickey]

On Mon, Jan 03, 2022 at 08:36:43AM -0500, Vincent Fortier wrote:
> Hi,
> 
> I'm a community dev working on the SynoCommunity project.  We're using
> ncurses for multiple opensource packages that we integrate so they can
> be installed on Synology NAS (which uses linux).
> 
> While trying to update ncurses to 6.3 I tried (once more) to modify
> the pkgconfig location to another location.  Under synology NAS each
> application is self-contained and installed under
> /var/packages/<app>/target.  When cross-compiling our installation
> prefix is set as such which lead to having pkgconfig directory to sit
> under $(INSTALL_PREFIX)/lib/pkgconfig.  That $(INSTALL_PREFIX) sits
> under our working directory $(INSTALL_DIR).
> 
> >From the documentation the following two are obvious:
> --prefix=$(INSTALL_PREFIX)
> --with-install-prefix=$(INSTALL_DIR)   --> or using DESTDIR at make install 
> time

hmm - "--with-install-prefix" isn't intended as the pathname by
which an application finds the data.  It is a configure-time
version of $DESTDIR (which relocates the installed data,, making
it simple(r) to construct CD images, etc.).

that said, the ncurses build scripts shouldn't be repeating '$(INSTALL_DIR)'.

But the configure script can be confused, since it wouldn't see
that as an absolute pathname such as "/whatever/lib/pkgconfig",
and would attempt to add an absolute prefix in front.

That's in 6.3-release.  In post-6.3 development, I've relaxed that
a little (mainly for users who want to configure when the pkgconfig
directory does not yet exist).

So... to let me understand the problem better, it would help to have
a script which shows the complete configure-command that you're trying.

Given that, I can either offer some advice on workarounds, to attempt
to solve the problem :-)
 
> When ever I install ncurses the pkgconfig directory ends-up going
> under (cross-compiling x86_64 under x86_64 in this case):
> $(INSTALL_DIR)/usr/lib/x86_64-linux-gnu/pkgconfig
> 
> I'm doing something similar for terminfo and it works just fine:
> --with-terminfo-dirs=$(INSTALL_PREFIX)/share/terminfo
> 
> So my obvious choice is is to set the following:
> --with-pkg-config-libdir=$(INSTALL_PREFIX)/lib/pkgconfig
> 
> It so happen that ncurses install the pkgconfig under:
> $(INSTALL_DIR)/home/spksrc/gdbm-ncurse/spksrc/cross/ncurses/work-kvmx64-7.0/install/usr/local/ncurses/lib/pkgconfig/
> Which could be summarized as:
> $(INSTALL_DIR)/$(INSTALL_DIR)/$(INSTALL_PREFIX)/lib/pkgconfig/
> 
> I've tried every possible variation on that theme and it always get to
> that same point.  I thought it could be a framework environment
> variable but haven't found anything yet.
> 
> This is normally trivial but I've been spending way more cycles than
> expected on something that I thought would be trivial to do.
> 
> Help much appreciated :)
> 
> - vin (@th0ma7)
> 
> For reference:
> https://github.com/SynoCommunity/spksrc
> https://synocommunity.com/
> 

-- 
Thomas E. Dickey <dickey@invisible-island.net>
https://invisible-island.net
ftp://ftp.invisible-island.net

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