#

# CDDL HEADER START

#

# The contents of this file are subject to the terms of the

# Common Development and Distribution License (the "License").

# You may not use this file except in compliance with the License.

#

# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

# or http://www.opensolaris.org/os/licensing.

# See the License for the specific language governing permissions

# and limitations under the License.

#

# When distributing Covered Code, include this CDDL HEADER in each

# file and include the License file at usr/src/OPENSOLARIS.LICENSE.

# If applicable, add the following below this CDDL HEADER, with the

# fields enclosed by brackets "[]" replaced with your own identifying

# information: Portions Copyright [yyyy] [name of copyright owner]

#

# CDDL HEADER END

#

# Copyright (c) 2008, 2015, Oracle and/or its affiliates. All rights reserved.

#

NAME:             emacs

VERSION:          24.3

DESCRIPTION:      GNU Emacs editor

LICENSE:          GPLv3

BUGTRAQ:          solaris/utility/emacs

COMMENTS:         

This file contains information about the emacs package within the Userland

consolidation. Along with the comments in the Makefile, it documents any

deviations from standard Userland or emacs practice, as well as miscellaneous

information needed to understand how this component is put together.

- We patch the following changes to the emacs sources:

	calc-forms.patch

	    calc has a flaw that puts the X11 versions of emacs into a

            tight loop. This patch comes from the calc maintainer. The

	    fix was applied to the GNU emacs "master" branch, in September

	    2014. It will be in version 25.1. We should be able to drop

	    this patch when we upgrade to, or past, that release.

	face_for_font.patch

	    xdisp.c has a call to face_for_font(), a function that is

	    only present when window system support is included, which is

	    not the case for emacs-nox. This patch ifdefs the offending

	    call away.

	find.patch

	    The rgrep function uses the GNU-specific -path option to the

	    find command. Change the default value for the find-program

	    variable in grep.el to use GNU find.

	gtkutil.patch

	    This fixes a bug in emacs 24.3 in which a message like the

	    following is emitted to stderr on startup if emacs was started

	    with a specified geometry:

	    (emacs:4090): Gtk-WARNING **: gtk_window_parse_geometry() called

	    on a window with no visible children; the window should be set up

	    before gtk_window_parse_geometry() is called.

	    This was fixed upstream: 

	        https://bugzilla.redhat.com/show_bug.cgi?id=929353

		http://bzr.savannah.gnu.org/lh/emacs/trunk/revision/111078

- The emacs distribution used to have a subdirectory, src/s, which

  contained per-platform header files. We would apply the following

    sol2-6.h: Enable the use of the native Solaris dldump()

        --- sol2-6.h.~1~        2011-10-17 19:20:46.000000000 -0600

        +++ sol2-6.h    2013-09-23 13:34:26.683033182 -0600

        @@ -2,10 +2,17 @@

         #include "sol2-5.h"

        -#if 0 /* dldump does not handle all the extensions used by GNU ld.  */

        +/*

        + * Use the Solaris dldump() function to dump emacs, instead of

        + * the generic unexelf code.

        + *

        + * If you encounter a problem using dldump(), please consider sending

        + * a message to the OpenSolaris tools-linking mailing list:

        + *      http://mail.opensolaris.org/mailman/listinfo/tools-linking

        + */

        +

         #undef UNEXEC

         #define UNEXEC unexsol.o

        -#endif

         /* arch-tag: 71ea3857-89dc-4395-9623-77964e6ed3ca

            (do not change this comment) */

    sol2-5.h: Use the system malloc instead of the GNU malloc:

        --- sol2-5.h.~1~        2011-10-17 19:20:46.000000000 -0600

        +++ sol2-5.h    2013-09-23 13:34:26.732656398 -0600

        @@ -17,6 +17,7 @@

         /* This is not always necessary.  Turned off at present for testers to

            identify any problems with gmalloc more accurately.  */

         /* #define SYSTEM_MALLOC */

        +#define SYSTEM_MALLOC

         /* There have problems reported with mmap at least on Solaris 2.6

            and 2.7.  For simplicity, let's not use mmap for anything >= 2.5.

  update, we must verify that these settings stick and remain enabled.

    System Malloc:

    The information output at the end of the configure step verifies this:

        Configured for `x86_64-pc-solaris2.12'.

	...

          Should Emacs use the GNU version of malloc?             no

            (The GNU allocators don't work with this system configuration.)

    dldump:

    One could examine the configure script looking for the setting

    "UNEXEC_OBJ=unexsol.o", but it seems easier/better to simply examine

    the final executable:

        % pvs -nos emacs | grep dldump

        emacs - libc.so.1 (SUNW_1.22): dldump;

- Emacs can be built as either 32-bit or 64-bit, depending on the target

  machine. The benefit of a 64-bit emacs is that the size of the files it

  can handle is not limited to 128MB, as it is with the 32-bit version.

  For Solaris, we used to build both versions, using /usr/lib/isaexec to

  run the 64-bit version if possible, and the 32-bit version otherwise. Note

  that this was only done for the emacs binary itself, as there is no

  technical need for 64-bit versions of the ancillary programs that come

  with emacs (etags, emacsclient, etc).

  Fortunately, the vast majority of the files in an emacs tree are identical,

  regardless of the platform and/or word size, which makes this particularly

  easy to do.

  With Solaris 11, all kernels are 64-bit, and we therefore do not need

  the 32-bit executables. As such, we only supply 64-bit emacs binaries now,

  and the use of usr/lib/isaexec has been removed: This cuts the number of

  builds necessary in half, and also the binary package size. It also

  simplifies packaging, and the user's view of /usr/bin/emacs*.

- There are three different toolkit options: None, Athena widgets

  (aka Xaw, or lucid), and gtk. It would be nice to only support gtk,

  but for purposes of minimization and user preference, we supply binaries

  for all three. We follow the Linux model in this regard. The Xaw and no-X

  versions are quite stable from release to release, so this isn't a large

  burden.

- In the past, we built emacs with gcc. The Makefile contained:

    # This code is built with gcc. The primary reason for this is that the

    # configure script has problems using a non-GNU cpp. I am not aware of

    # any reason Sun Studio could not be made to work, but simply made a

    # cost/benefit decision not to pursue it at this time

    COMPILER =      gcc

  With emacs 24.3, I removed this, and find that studio now builds

  emacs without issue. This is something that should be reverified

  with each update.

- We deliver the following packages:

	gnu-emacs - Everything you need to run emacs, except the

	    emacs binaries.

	gnu-emacs-gtk - Binary for the X11 version using the GTK toolkit.

	gnu-emacs-no-x11 - Pure tty emacs binary, built without

	    any X11 linkage or other extra support (i.e. D-bus). This

	    is the most basic emacs possible, ideal for headless server

	    systems.

	gnu-emacs-x11 - Binary for the X11 version using the Athena

	    widget (Xaw) toolkit.

	gnu-emacs-lisp - The compressed LISP files for which compiled

	    versions are delivered by gnu-emacs. These are only needed

	    for emacs developers and those who like to read source code.

  The core gnu-emacs package is required by all of the other packages.

  In turn, gnu-emacs requires at least one of the packages supplying an

  emacs binary to be installed.

- We do not ship any suid/sgid binaries for obvious security reasons.

  We do not install the files under /var/games/emacs. The reason for

  this is that we do not install update-game-score as setuid, and

  therefore the game files are not usable. This the same decision made

  by Debian, among others.