Emacs is coming back - 2nd try

Emacs is coming back - 2nd try

[Steffen Sledz]

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Here is my second try of the emacs 22.1 packages.

I've fixed some minor problems in dependency info. The conflicts with
ctags and xemacs are solved, and the emacs-el package is fixed (a lot of
files were missing in 22.1-1). Thanx to the hints from Eric.

I've not yet changed the emacs.exe binary behaviour in the way suggested
by Eric because I've not found a good sample for this. Also I'm not sure
if it is a better solution than the current one (emacs-nox.exe without
X11 support and emacs.exe with X11 support).

I believe the packages are ready for uploading now to give more people
the chance to test it. Please upload if you agree! It is again marked as
experimental.

The base package including everything to run without X11 and the sources:

<http://www.zone42.org/cygwin/emacs/emacs-22.1-2.tar.bz2>
<http://www.zone42.org/cygwin/emacs/emacs-22.1-2-src.tar.bz2>
<http://www.zone42.org/cygwin/emacs/setup.hint>

The X11 binary:

<http://www.zone42.org/cygwin/emacs/emacs-X11/emacs-X11-22.1-2.tar.bz2>
<http://www.zone42.org/cygwin/emacs/emacs-X11/setup.hint>

The lisp sources (including LEIM sources):

<http://www.zone42.org/cygwin/emacs/emacs-el/emacs-el-22.1-2.tar.bz2>
<http://www.zone42.org/cygwin/emacs/emacs-el/setup.hint>

LEIM is obsolete as an own package. This is an empty package moving
emacs-leim to _obsolete:

<http://www.zone42.org/cygwin/emacs/emacs-leim/emacs-leim-22.1-2.tar.bz2>
<http://www.zone42.org/cygwin/emacs/emacs-leim/setup.hint>

You can also install directly from:

<http://www.zone42.org/cygwin/setup.ini>

Steffen Sledz
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Re: Emacs is coming back - 2nd try

[Eric Blake]

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According to Steffen Sledz on 7/16/2007 1:28 PM:
> Here is my second try of the emacs 22.1 packages.
> 
> I've fixed some minor problems in dependency info. The conflicts with
> ctags and xemacs are solved, and the emacs-el package is fixed (a lot of
> files were missing in 22.1-1). Thanx to the hints from Eric.
> 
> I've not yet changed the emacs.exe binary behaviour in the way suggested
> by Eric because I've not found a good sample for this. Also I'm not sure
> if it is a better solution than the current one (emacs-nox.exe without
> X11 support and emacs.exe with X11 support).

I'd still like to see a -3 that takes an alternatives-based approach.  To
do that, you need to add a dependency on alternatives, then in your
postinstall script, do something like this (looking at
/etc/postinstall/automake1.<x>.sh for inspiration) for the non-X version:

prefix=/usr
bindir=${prefix}/bin
sbindir=${prefix}/sbin
${sbindir}/update-alternatives \
        --install ${bindir}/emacs emacs ${bindir}/emacs-nox 10

and this for the X version:

prefix=/usr
bindir=${prefix}/bin
sbindir=${prefix}/sbin
${sbindir}/update-alternatives \
        --install ${bindir}/emacs emacs ${bindir}/emacs-x 20

Notice that you would no longer ship emacs.exe in either package (meaning
the X version ships bin/emacs-x.exe).  When done right, if the user only
installs the nox package, the emacs symlink is created on their behalf
defaulting to the nox version; if the user installs the X package, the
emacs symlink takes priority to the X version even if the nox package is
then uninstalled and reinstalled.

> 
> I believe the packages are ready for uploading now to give more people
> the chance to test it. Please upload if you agree! It is again marked as
> experimental.

Still not ready to upload, but you are getting closer.

> 
> The base package including everything to run without X11 and the sources:
> 
> <http://www.zone42.org/cygwin/emacs/emacs-22.1-2.tar.bz2>
> <http://www.zone42.org/cygwin/emacs/emacs-22.1-2-src.tar.bz2>

The embedded file emacs-22.1-2.src.patch is identical to
emacs-22.1-2.cygwin.patch; it looks like you built emacs out of the box
without any source patches, so I'm not sure why you even had a .src.patch.
 But I don't think it is a showstopper for -2.

However, when trying to reproduce the build, I got this failure during the
package phase:

cygport emacs-22.1-2 package
...
>>> emacs-el-22.1-2.tar.bz2
...
tar: usr/share/emacs/22.1/leim: Cannot stat: No such file or directory
tar: Error exit delayed from previous errors
*** ERROR: Binary package creation failed


> <http://www.zone42.org/cygwin/emacs/setup.hint>

You don't need to mention _update-info-dir in requires: - that one happens
automatically.

> 
> The X11 binary:
> 
> <http://www.zone42.org/cygwin/emacs/emacs-X11/emacs-X11-22.1-2.tar.bz2>
> <http://www.zone42.org/cygwin/emacs/emacs-X11/setup.hint>

You are missing an "external-source: emacs" line - every package must have
a -src.tar.bz2 or an external-source.

> 
> The lisp sources (including LEIM sources):
> 
> <http://www.zone42.org/cygwin/emacs/emacs-el/emacs-el-22.1-2.tar.bz2>
> <http://www.zone42.org/cygwin/emacs/emacs-el/setup.hint>

Likewise.

> 
> LEIM is obsolete as an own package. This is an empty package moving
> emacs-leim to _obsolete:
> 
> <http://www.zone42.org/cygwin/emacs/emacs-leim/emacs-leim-22.1-2.tar.bz2>
> <http://www.zone42.org/cygwin/emacs/emacs-leim/setup.hint>

You need to add a "requires: emacs" line to pick up the replacement as
part of the obsoletion process.  Also, I would create an empty
- -src.tar.bz2 file rather than relying on an external-source: line.

> 
> You can also install directly from:
> 
> <http://www.zone42.org/cygwin/setup.ini>

Thanks for posting this - it makes it a bit easier to test while you still
iron out bugs before the initial cygwin.com upload.  That gold star for
taking over maintainership will be yours in no time.

> 
> Steffen Sledz

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net
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Re: Emacs is coming back - 2nd try

[Eric Blake]

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According to Eric Blake on 7/17/2007 6:43 AM:
>> The base package including everything to run without X11 and the sources:
> 
>> <http://www.zone42.org/cygwin/emacs/emacs-22.1-2.tar.bz2>
>> <http://www.zone42.org/cygwin/emacs/emacs-22.1-2-src.tar.bz2>
> 
> However, when trying to reproduce the build, I got this failure during the
> package phase:
> 
> cygport emacs-22.1-2 package
> ...
>>>> emacs-el-22.1-2.tar.bz2
> ...
> tar: usr/share/emacs/22.1/leim: Cannot stat: No such file or directory
> tar: Error exit delayed from previous errors
> *** ERROR: Binary package creation failed

Also, your .cygport package does the following:

# build non-X11 binary first
        LDFLAGS='-Wl,--enable-auto-import -Wl,--enable-auto-image-base'\
 cygconf --with-x=no
        cygmake LD='$(CC)'
        # save non-X11 binary
        cp -v src/emacs.exe emacs-nox.exe
        # cleanup build dir
        make distclean
        # build X11 binary
        cygconf

Shouldn't the second cygconf also set LDFLAGS?  In fact, if my
understanding is correct, the problem of auto-image-base and auto-import
are MORE important for the X version, because it is pulling in more libraries.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net
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Re: Emacs is coming back - 2nd try

[Eric Blake]

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According to Eric Blake on 7/17/2007 6:43 AM:
> 
> However, when trying to reproduce the build, I got this failure during the
> package phase:
> 
> cygport emacs-22.1-2 package
> ...
>>>> emacs-el-22.1-2.tar.bz2
> ...
> tar: usr/share/emacs/22.1/leim: Cannot stat: No such file or directory
> tar: Error exit delayed from previous errors
> *** ERROR: Binary package creation failed

Actually, things failed earlier in the 'install' phase, but there was so
much output that I had missed it.  I am getting a lot of warnings like:

chown: `Eric': invalid user

My Windows account name is 'Eric Blake', with a space, although I've set
up my /etc/passwd so that id (and also $USER) report me as 'eblake'.  But
something in the emacs Makefiles needs to be patched so that it either
properly quotes Windows account names, or else uses a numeric uid as the
argument for chown (and why it even tried to use the Windows account name
is worth investigating).

When all was said and done, the 'install' phase failed on me:

*** ERROR: make install DESTDIR failed

so I think there is a cygport bug that it still tries the 'package' step
after an 'install' failure, when invoked as 'cygport emacs-22.1-2 prep
build install package'.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net
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Re: Emacs is coming back - 2nd try

[Steffen Sledz]

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Eric Blake schrieb:
> Also, your .cygport package does the following:
> 
> # build non-X11 binary first
>         LDFLAGS='-Wl,--enable-auto-import -Wl,--enable-auto-image-base'\
>  cygconf --with-x=no
>         cygmake LD='$(CC)'
>         # save non-X11 binary
>         cp -v src/emacs.exe emacs-nox.exe
>         # cleanup build dir
>         make distclean
>         # build X11 binary
>         cygconf
> 
> Shouldn't the second cygconf also set LDFLAGS?  In fact, if my
> understanding is correct, the problem of auto-image-base and auto-import
> are MORE important for the X version, because it is pulling in more libraries.

You're right. I didn't it before because I'd just problems with the nox
version and the ncurses lib. But after the message from Angelo I agree
to do it for the X11 version too.

Steffen

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Re: Emacs is coming back - 2nd try

[Steffen Sledz]

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Eric Blake schrieb:
> I'd still like to see a -3 that takes an alternatives-based approach.  To
> do that, you need to add a dependency on alternatives, then in your
> postinstall script, do something like this (looking at
> /etc/postinstall/automake1.<x>.sh for inspiration) for the non-X version:

OK. I'll try to please you.  :)

>> The base package including everything to run without X11 and the sources:
> 
>> <http://www.zone42.org/cygwin/emacs/emacs-22.1-2.tar.bz2>
>> <http://www.zone42.org/cygwin/emacs/emacs-22.1-2-src.tar.bz2>
> 
> The embedded file emacs-22.1-2.src.patch is identical to
> emacs-22.1-2.cygwin.patch; it looks like you built emacs out of the box
> without any source patches, so I'm not sure why you even had a .src.patch.
>  But I don't think it is a showstopper for -2.

Hmmm? That's interesting. I did not embed any emacs-22.1-2.src.patch
file. A cygport bug???

Steffen

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Re: Emacs is coming back - 2nd try

[Steffen Sledz]

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Eric Blake schrieb:
> I'd still like to see a -3 that takes an alternatives-based approach.  To
> do that, you need to add a dependency on alternatives, then in your
> postinstall script, do something like this (looking at
> /etc/postinstall/automake1.<x>.sh for inspiration) for the non-X version:

Another newbie question at this point: What's the right way to create
the postinstall script? Currently there is one generated by cygport
containing the install-info stuff.

Steffen
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Re: Emacs is coming back - 2nd try

[Eric Blake]

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According to Steffen Sledz on 7/17/2007 3:14 PM:
> Eric Blake schrieb:
>> I'd still like to see a -3 that takes an alternatives-based approach.  To
>> do that, you need to add a dependency on alternatives, then in your
>> postinstall script, do something like this (looking at
>> /etc/postinstall/automake1.<x>.sh for inspiration) for the non-X version:
> 
> Another newbie question at this point: What's the right way to create
> the postinstall script? Currently there is one generated by cygport
> containing the install-info stuff.

Simply create a file named postinstall.sh inside the CYGWIN-PATCHES
directory, alongside the readme files.  Cygport will automatically append
its postinstall stuff after the contents of your file.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net
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Re: Emacs is coming back - 2nd try

[Steffen Sledz]

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On Tue, 17 Jul 2007, Eric Blake wrote:
> > Another newbie question at this point: What's the right way to create 
> > the postinstall script? Currently there is one generated by cygport 
> > containing the install-info stuff.
> 
> Simply create a file named postinstall.sh inside the CYGWIN-PATCHES
> directory, alongside the readme files.  Cygport will automatically append
> its postinstall stuff after the contents of your file.

What's the right naming here? I need two of them, one for emacs and one 
for emacs-X11.

Steffen

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Re: Emacs is coming back - 2nd try

[Eric Blake]

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According to Steffen Sledz on 7/18/2007 12:13 AM:
> On Tue, 17 Jul 2007, Eric Blake wrote:
>>> Another newbie question at this point: What's the right way to create 
>>> the postinstall script? Currently there is one generated by cygport 
>>> containing the install-info stuff.
>> Simply create a file named postinstall.sh inside the CYGWIN-PATCHES
>> directory, alongside the readme files.  Cygport will automatically append
>> its postinstall stuff after the contents of your file.
> 
> What's the right naming here? I need two of them, one for emacs and one 
> for emacs-X11.

Hmm, you're right - cygport is currently hardcoded to only outputting
postinstall information for the primary ${PN}, regardless of how many
additional packages get created during the process.  This seems like a
cygport limitation - maybe Yaakov has some more insight?

But I think you are still okay - you only need the cygport postinstall
additions appended in the primary emacs package, for two reasons - the
cygport additions only install info files, which are already limited to
the primary emacs package; and the emacs-X11 package depends on emacs, so
that part of the postinstall will get run regardless of which of the two
packages the user selected.

So I think the answer is as follows - for creating
/etc/postinstall/emacs.sh, simply put your prefix into
CYGWIN_PATCHES/postinstall.sh, and let cygport append its trailer and do
the renaming.  For creating /etc/postinstall/emacs-X11.sh, put your entire
file in CYGWIN_PATCHES/emacs-X11-post.sh, then have your .cygport file do
the following as part of src_install:

dodir /etc/postinstall
cp ${C}/emacs-X11-post.sh ${D}/etc/postinstall/emacs-X11.sh

Oh, and don't forget the corresponding preremoves.  Again, using
/etc/preremove/automake<n>.sh as a guide, you will need something similar
to this for your two preremoves:

prefix=/usr
bindir=${prefix}/bin
sbindir=${prefix}/sbin

${sbindir}/update-alternatives --remove emacs ${bindir}/emacs-nox.exe

Again, cygport makes the emacs preremove easy, but you will have to do the
same trick as for the postinstall to get the emacs-X11 preremove installed.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net
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