GNU bug report logs - #26050
25.2; configure: no libxml2 support with libxml2 installed

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 26050 in the body.
You can then email your comments to 26050 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: nljlistbox2 <at> gmail.com (N. Jackson)
To: bug-gnu-emacs <at> gnu.org
Subject: 25.2; configure: no libxml2 support with libxml2 installed
Date: Fri, 10 Mar 2017 11:07:19 -0500

With Emacs from the emacs-25.2.rc2 release candidate tarball,
configure is omitting support for libxml2. (I discovered this
because eww no longer works.)

(The released version of emacs-25.1, also built from the tarball
(on 2016-09-19) did not have this problem.)

  $ ./configure
  .
  .
  .
  checking for LIBXML2... no
  .
  .
  .
    Does Emacs use -lxml2?                                  no
  .
  .
  .

  $ dnf list libxml2
  Last metadata expiration check: 1:42:01 ago on Fri Mar 10 08:15:37 2017.
  Installed Packages
  libxml2.x86_64                         2.9.3-4.fc25                          @anaconda

FWIW, the indentation of the conditional structures in the
relevant part of configure is confusing; the indentation belies
the logical nesting. Also some of the lines are excessively long.
In any case:

      16321 ### Use libxml (-lxml2) if available
      16322 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
      16323 HAVE_LIBXML2=no
true  16324 if test "${with_xml2}" != "no"; then
      16325   ### I'm not sure what the version number should be, so I just guessed.
      16326 
      16327 pkg_failed=no
      16328 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for LIBXML2" >&5
      16329 $as_echo_n "checking for LIBXML2... " >&6; }
      16330 
false 16331 if test -n "$LIBXML2_CFLAGS"; then
      16332     pkg_cv_LIBXML2_CFLAGS="$LIBXML2_CFLAGS"
true  16333  elif test -n "$PKG_CONFIG"; then
false 16334     if test -n "$PKG_CONFIG" && \
      16335     { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libxml-2.0 > 2.6.17\""; } >&5
      16336   ($PKG_CONFIG --exists --print-errors "libxml-2.0 > 2.6.17") 2>&5
      16337   ac_status=$?
      16338   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
      16339   test $ac_status = 0; }; then
      16340   pkg_cv_LIBXML2_CFLAGS=`$PKG_CONFIG --cflags "libxml-2.0 > 2.6.17" 2>/dev/null`
      16341                 test "x$?" != "x0" && pkg_failed=yes
      16342 else
-->   16343   pkg_failed=yes
      16344 fi
      16345  else
      16346     pkg_failed=untried
      16347 fi
false 16348 if test -n "$LIBXML2_LIBS"; then
      16349     pkg_cv_LIBXML2_LIBS="$LIBXML2_LIBS"
true  16350  elif test -n "$PKG_CONFIG"; then
false 16351     if test -n "$PKG_CONFIG" && \
      16352     { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libxml-2.0 > 2.6.17\""; } >&5
      16353   ($PKG_CONFIG --exists --print-errors "libxml-2.0 > 2.6.17") 2>&5
      16354   ac_status=$?
      16355   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
      16356   test $ac_status = 0; }; then
      16357   pkg_cv_LIBXML2_LIBS=`$PKG_CONFIG --libs "libxml-2.0 > 2.6.17" 2>/dev/null`
      16358                 test "x$?" != "x0" && pkg_failed=yes
      16359 else
-->   16360   pkg_failed=yes
      16361 fi
      16362  else
      16363     pkg_failed=untried
      16364 fi

The marginal annotations show which conditionals test true and
which test false, and shows where we set pkg_failed to yes.


In GNU Emacs 25.2.11 (x86_64-unknown-linux-gnu, GTK+ Version 3.22.8)
 of 2017-03-03 built on moondust.localdomain
Windowing system distributor 'Fedora Project', version 11.0.11901000
System Description:	Fedora release 25 (Twenty Five)

Configured using:
 'configure CFLAGS=-O3'

Configured features:
XPM JPEG TIFF GIF PNG IMAGEMAGICK SOUND DBUS GSETTINGS NOTIFY GNUTLS
FREETYPE XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LANG: en_CA.UTF-8
  value of $XMODIFIERS: @im=none
  locale-coding-system: utf-8-unix

Features:
(shadow bbdb-message emacsbug sendmail gnus-async qp mail-extr gnus-ml
disp-table mm-archive url-handlers nnrss xml nndraft nnmh utf-7 server
pinentry epa-file epa derived nnfolder bbdb-gnus bbdb-mua nnnil
gnus-agent gnus-srvr gnus-score score-mode nnvirtual gnus-msg nntp
gnus-cache sh-script smie executable bat-mode misearch multi-isearch
network-stream nsm starttls url-http url-gw url-cache url-auth eww
mm-url url-queue shr dom browse-url goto-addr thingatpt view linum
cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine
cc-vars cc-defs flyspell ispell sage sage-load rx emms-bookmarks
emms-cue emms-mode-line-icon emms-browser sort emms-playlist-sort
emms-last-played emms-player-xine emms-player-mpd emms-playing-time
emms-lyrics emms-url url url-proxy url-privacy url-expand url-methods
url-history url-cookie url-domsuf url-util url-parse url-vars
emms-streams emms-tag-editor emms-mark emms-mode-line emms-cache
emms-info-ogginfo emms-info-mp3info emms-info later-do
emms-playlist-mode emms-player-vlc emms-player-mplayer
emms-player-simple emms-source-playlist emms-source-file locate
emms-setup emms emms-compat calfw-org calfw holidays hol-loaddefs cl
pdf-occur ibuf-ext ibuffer tablist tablist-filter semantic/wisent/comp
semantic/wisent semantic/wisent/wisent semantic/util-modes semantic/util
semantic semantic/tag semantic/lex semantic/fw mode-local cedet
pdf-isearch let-alist pdf-misc imenu pdf-tools compile cus-edit pdf-view
bookmark pp pdf-cache pdf-info tq pdf-util org-contacts org-capture
gnus-art mm-uu mml2015 mm-view mml-smime smime dig mailcap gnus-sum
gnus-group gnus-undo gnus-start gnus-cloud nnimap nnmail mail-source tls
gnutls utf7 netrc nnoo parse-time gnus-spec gnus-int gnus-range message
rfc822 mml mml-sec epg mm-decode mm-bodies mm-encode mail-parse rfc2231
rfc2047 rfc2045 ietf-drums gmm-utils mailheader gnus-win gnus gnus-ems
nnheader mail-utils org-eldoc org-w3m org-rmail org-mhe org-irc org-info
org-habit org-gnus org-docview doc-view subr-x jka-compr image-mode
dired org-bibtex bibtex org-bbdb org-agenda org-element avl-tree org
org-macro org-footnote org-pcomplete org-list org-faces org-entities
noutline outline easy-mmode org-version ob-latex ob-emacs-lisp ob
ob-tangle org-src ob-ref ob-lob ob-table ob-keys ob-exp ob-comint tramp
tramp-compat auth-source cl-seq eieio eieio-core cl-macs gnus-util
mm-util help-fns mail-prsvr password-cache tramp-loaddefs trampver
ucs-normalize shell pcomplete advice comint ansi-color ring ob-core
ob-eval org-compat org-macs org-loaddefs format-spec find-func
bbdb-anniv diary-lib diary-loaddefs cal-menu calendar cal-loaddefs
bbdb-com crm mailabbrev bbdb bbdb-site timezone bbdb-loaddefs finder-inf
tex-site info package epg-config seq byte-opt gv bytecomp byte-compile
cl-extra help-mode cconv edmacro kmacro recentf tree-widget wid-edit
easymenu battery time wheatgrass-theme paren savehist saveplace
elec-pair desktop frameset cl-loaddefs pcase cl-lib delsel cua-base
cus-start cus-load time-date mule-util tooltip eldoc electric uniquify
ediff-hook vc-hooks lisp-float-type mwheel x-win term/common-win x-dnd
tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment
elisp-mode lisp-mode prog-mode register page menu-bar rfn-eshadow timer
select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
frame cl-generic cham georgian utf-8-lang misc-lang vietnamese tibetan
thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian
slovak czech european ethiopic indian cyrillic chinese charscript
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer
cl-preloaded nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote dbusbind inotify
dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 840029 275156)
 (symbols 48 104067 77)
 (miscs 40 19960 6933)
 (strings 32 203674 9947)
 (string-bytes 1 9233489)
 (vectors 16 78401)
 (vector-slots 8 1246250 9319)
 (floats 8 634 928)
 (intervals 56 34155 0)
 (buffers 976 80))

Message #8 received at 26050 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: nljlistbox2 <at> gmail.com (N. Jackson)
Cc: 26050 <at> debbugs.gnu.org
Subject: Re: bug#26050: 25.2;
 configure: no libxml2 support with libxml2 installed
Date: Fri, 10 Mar 2017 18:40:22 +0200

> From: nljlistbox2 <at> gmail.com (N. Jackson)
> Date: Fri, 10 Mar 2017 11:07:19 -0500
> 
> With Emacs from the emacs-25.2.rc2 release candidate tarball,
> configure is omitting support for libxml2. (I discovered this
> because eww no longer works.)
> 
> (The released version of emacs-25.1, also built from the tarball
> (on 2016-09-19) did not have this problem.)
> 
>   $ ./configure
>   .
>   .
>   .
>   checking for LIBXML2... no
>   .
>   .
>   .
>     Does Emacs use -lxml2?                                  no
>   .
>   .
>   .
> 
>   $ dnf list libxml2
>   Last metadata expiration check: 1:42:01 ago on Fri Mar 10 08:15:37 2017.
>   Installed Packages
>   libxml2.x86_64                         2.9.3-4.fc25                          @anaconda

What does config.log say about the libxml2 tests?

Message #11 received at 26050 <at> debbugs.gnu.org (full text, mbox):

From: Noam Postavsky <npostavs <at> users.sourceforge.net>
To: "N. Jackson" <nljlistbox2 <at> gmail.com>
Cc: 26050 <at> debbugs.gnu.org
Subject: Re: bug#26050: 25.2;
 configure: no libxml2 support with libxml2 installed
Date: Fri, 10 Mar 2017 11:50:35 -0500

On Fri, Mar 10, 2017 at 11:07 AM, N. Jackson <nljlistbox2 <at> gmail.com> wrote:
>   $ dnf list libxml2
>   Last metadata expiration check: 1:42:01 ago on Fri Mar 10 08:15:37 2017.
>   Installed Packages
>   libxml2.x86_64                         2.9.3-4.fc25                          @anaconda
>

Are you missing the -devel package, or does 'dnf' require some more
options to list it?

Message #14 received at 26050 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: nljlistbox2 <at> gmail.com (N. Jackson)
Cc: 26050 <at> debbugs.gnu.org
Subject: Re: bug#26050: 25.2;
 configure: no libxml2 support with libxml2 installed
Date: Fri, 10 Mar 2017 12:58:21 -0500

N. Jackson wrote:

> (The released version of emacs-25.1, also built from the tarball
> (on 2016-09-19) did not have this problem.)
[...]
> System Description:	Fedora release 25 (Twenty Five)

But Fedora 25 did not exist on 2016-09-19, so presumably you built 25.1
before performing a system upgrade. So who knows what's changed in-between.

> FWIW, the indentation of the conditional structures in the
> relevant part of configure is confusing; the indentation belies
> the logical nesting. Also some of the lines are excessively long.

It's a generated file. It's often simpler to read configure.ac.

Message #17 received at 26050 <at> debbugs.gnu.org (full text, mbox):

From: nljlistbox2 <at> gmail.com (N. Jackson)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 26050 <at> debbugs.gnu.org
Subject: Re: bug#26050: 25.2;
 configure: no libxml2 support with libxml2 installed
Date: Fri, 10 Mar 2017 13:42:17 -0500

tags 26050 notabug
close 26050
done

Sorry, this was a user error.

I simply didn't have the libxml2 development package on this
system. Gets me every time! (Although usually I don't get as far
as filing a bug report.)

So the fix was as simple as:

  # dnf install libxml2-devel


At 18:40 +0200 on Friday 2017-03-10, Eli Zaretskii wrote:
>
> What does config.log say about the libxml2 tests?

Sorry, I'd forgotten about that file! Here's what it was saying earlier:

  configure-test:16329: checking for LIBXML2
  configure-test:16338: $PKG_CONFIG --exists --print-errors "libxml-2.0 > 2.6.17"
  Package libxml-2.0 was not found in the pkg-config search path.
  Perhaps you should add the directory containing `libxml-2.0.pc'
  to the PKG_CONFIG_PATH environment variable
  No package 'libxml-2.0' found
  configure-test:16341: $? = 1
  configure-test:16361: $PKG_CONFIG --exists --print-errors "libxml-2.0 > 2.6.17"
  Package libxml-2.0 was not found in the pkg-config search path.
  Perhaps you should add the directory containing `libxml-2.0.pc'
  to the PKG_CONFIG_PATH environment variable
  No package 'libxml-2.0' found
  configure-test:16364: $? = 1
  configure-test:16381: result: no
  No package 'libxml-2.0' found

Now that everything works, it says:

  configure:16328: checking for LIBXML2
  configure:16335: $PKG_CONFIG --exists --print-errors "libxml-2.0 > 2.6.17"
  configure:16338: $? = 0
  configure:16352: $PKG_CONFIG --exists --print-errors "libxml-2.0 > 2.6.17"
  configure:16355: $? = 0
  configure:16393: result: yes
  configure:16428: checking for htmlReadMemory in -lxml2
  configure:16453: gcc -o conftest  -g3 -O2       conftest.c -lxml2 -lxml2 -lX11   >&5 
  configure:16453: $? = 0
  configure:16462: result: yes

Is it my imagination, or was there a time in the past when
configure printed a friendly message suggesting the installation
of the development package for a library when it failed to find
something like this?

N.

Message #24 received at 26050 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: nljlistbox2 <at> gmail.com (N. Jackson)
Cc: 26050 <at> debbugs.gnu.org
Subject: Re: bug#26050: 25.2;
 configure: no libxml2 support with libxml2 installed
Date: Fri, 10 Mar 2017 20:49:31 +0200

> From: nljlistbox2 <at> gmail.com (N. Jackson)
> Cc: 26050 <at> debbugs.gnu.org
> Date: Fri, 10 Mar 2017 13:42:17 -0500
> 
> Sorry, this was a user error.

No worries.

>   configure-test:16329: checking for LIBXML2
>   configure-test:16338: $PKG_CONFIG --exists --print-errors "libxml-2.0 > 2.6.17"
>   Package libxml-2.0 was not found in the pkg-config search path.
>   Perhaps you should add the directory containing `libxml-2.0.pc'
>   to the PKG_CONFIG_PATH environment variable
>   No package 'libxml-2.0' found
>   configure-test:16341: $? = 1
>   configure-test:16361: $PKG_CONFIG --exists --print-errors "libxml-2.0 > 2.6.17"
>   Package libxml-2.0 was not found in the pkg-config search path.
>   Perhaps you should add the directory containing `libxml-2.0.pc'
>   to the PKG_CONFIG_PATH environment variable
>   No package 'libxml-2.0' found
>   configure-test:16364: $? = 1
>   configure-test:16381: result: no
>   No package 'libxml-2.0' found
> 
> Now that everything works, it says:
> 
>   configure:16328: checking for LIBXML2
>   configure:16335: $PKG_CONFIG --exists --print-errors "libxml-2.0 > 2.6.17"
>   configure:16338: $? = 0
>   configure:16352: $PKG_CONFIG --exists --print-errors "libxml-2.0 > 2.6.17"
>   configure:16355: $? = 0
>   configure:16393: result: yes
>   configure:16428: checking for htmlReadMemory in -lxml2
>   configure:16453: gcc -o conftest  -g3 -O2       conftest.c -lxml2 -lxml2 -lX11   >&5 
>   configure:16453: $? = 0
>   configure:16462: result: yes
> 
> Is it my imagination, or was there a time in the past when
> configure printed a friendly message suggesting the installation
> of the development package for a library when it failed to find
> something like this?

The configure script still does that, but the above message comes from
pkg-config related tests, not from configure.

Message #27 received at 26050 <at> debbugs.gnu.org (full text, mbox):

From: Noam Postavsky <npostavs <at> users.sourceforge.net>
To: "N. Jackson" <nljlistbox2 <at> gmail.com>
Cc: 26050 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>
Subject: Re: bug#26050: 25.2;
 configure: no libxml2 support with libxml2 installed
Date: Fri, 10 Mar 2017 14:13:40 -0500

On Fri, Mar 10, 2017 at 1:42 PM, N. Jackson <nljlistbox2 <at> gmail.com> wrote:
>
> Is it my imagination, or was there a time in the past when
> configure printed a friendly message suggesting the installation
> of the development package for a library when it failed to find
> something like this?
>

This is the case for image libraries (xpm, jpeg, png, gif, tiff) and
gnutls, so you may be thinking of that.

configure.ac lines 3591-3616:

dnl Check for required libraries.
MISSING=
WITH_NO=
if test "${HAVE_X11}" = "yes"; then
  test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
    MISSING="libXpm" && WITH_NO="--with-xpm=no"
  test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
    MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
  test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
    MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
  test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
    MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
  test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
    MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
fi
test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
  MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
if test "X${MISSING}" != X; then
  AC_MSG_ERROR([The following required libraries were not found:
    $MISSING
Maybe some development libraries/packages are missing?
If you don't want to link with them give
    $WITH_NO
as options to configure])
fi

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.