bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Philipp]

Got the following compiler error when trying to compile the Harfbuzz
branch:

  CC       ftfont.o
ftfont.c: In function ‘ftfont_shape’:
ftfont.c:2952:7: error: unknown type name ‘OTF’
       OTF *otf = ftfont_get_otf (ftfont_info);
       ^~~
ftfont.c:2952:18: warning: implicit declaration of function ‘ftfont_get_otf’; did you mean ‘ftfont_get_cache’? [-Wimplicit-function-declaration]
       OTF *otf = ftfont_get_otf (ftfont_info);
                  ^~~~~~~~~~~~~~
                  ftfont_get_cache
ftfont.c:2952:18: warning: nested extern declaration of ‘ftfont_get_otf’ [-Wnested-externs]
ftfont.c:2952:18: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
ftfont.c:2954:14: warning: implicit declaration of function ‘ftfont_shape_by_flt’; did you mean ‘ftfont_shape_by_hb’? [-Wimplicit-function-declaration]
       return ftfont_shape_by_flt (lgstring, font, ftfont_info->ft_size->face,
              ^~~~~~~~~~~~~~~~~~~
              ftfont_shape_by_hb
ftfont.c:2954:14: warning: nested extern declaration of ‘ftfont_shape_by_flt’ [-Wnested-externs]
ftfont.c:2954:14: error: incompatible types when returning type ‘int’ but ‘Lisp_Object {aka struct Lisp_Object}’ was expected
       return ftfont_shape_by_flt (lgstring, font, ftfont_info->ft_size->face,
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
       otf, &ftfont_info->matrix);
       ~~~~~~~~~~~~~~~~~~~~~~~~~~
ftfont.c:2957:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
Makefile:386: recipe for target 'ftfont.o' failed
make[1]: *** [ftfont.o] Error 1

$ ./config.status --config
'--with-harfbuzz' '--enable-gtk-deprecation-warnings' '--enable-gcc-warnings=warn-only' '--with-modules' '--without-pop' '--with-mailutils' '--enable-checking' '--enable-check-lisp-object-type' 'CFLAGS=-O0 -ggdb3' 'LDFLAGS=-O0'

$ git log -n 1 --oneline
051d65a5a0 (HEAD -> harfbuzz, origin/harfbuzz) Assume hb_ft_font_create_referenced if HarfBuzz



In GNU Emacs 27.0.50 (build 59, x86_64-pc-linux-gnu, GTK+ Version 3.22.24)
 of 2018-12-16
Repository revision: 2f65525774b6e7edf119db678c9eb78cbb84de6a
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Debian GNU/Linux buster/sid

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.

Configured using:
 'configure --enable-gtk-deprecation-warnings
 --enable-gcc-warnings=warn-only --with-modules --without-pop
 --with-mailutils --enable-checking --enable-check-lisp-object-type
 'CFLAGS=-O0 -ggdb3''

Configured features:
XPM JPEG TIFF GIF PNG SOUND DBUS GSETTINGS GLIB NOTIFY INOTIFY GNUTLS
FREETYPE XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS
JSON GMP

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message rmc dired dired-loaddefs
format-spec rfc822 mml easymenu mml-sec epa derived epg epg-config
gnus-util rmail rmail-loaddefs time-date mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils phst pcase ffap
thingatpt url-parse auth-source cl-seq eieio eieio-core cl-macs
eieio-loaddefs password-cache json map url-vars subr-x rx gnutls puny
seq byte-opt gv bytecomp byte-compile cconv dbus xml cl-loaddefs cl-lib
elec-pair mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel term/x-win x-win term/common-win x-dnd tool-bar
dnd fontset image regexp-opt fringe tabulated-list replace newcomment
text-mode elisp-mode lisp-mode prog-mode register page menu-bar
rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core term/tty-colors 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 composite charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray 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 threads 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 109228 5116)
 (symbols 48 21803 1)
 (strings 32 32886 1896)
 (string-bytes 1 890091)
 (vectors 16 16542)
 (vector-slots 8 535229 8918)
 (floats 8 51 66)
 (intervals 56 224 0)
 (buffers 992 12))

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bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Eli Zaretskii]

> From: Philipp <p.stephani2@gmail.com>
> Date: Sun, 16 Dec 2018 19:57:54 +0100
> 
> 
> Got the following compiler error when trying to compile the Harfbuzz
> branch:
> 
>   CC       ftfont.o
> ftfont.c: In function ‘ftfont_shape’:
> ftfont.c:2952:7: error: unknown type name ‘OTF’
>        OTF *otf = ftfont_get_otf (ftfont_info);
>        ^~~

You are building without libotf?

> ftfont.c:2952:18: warning: implicit declaration of function ‘ftfont_get_otf’; did you mean ‘ftfont_get_cache’? [-Wimplicit-function-declaration]
>        OTF *otf = ftfont_get_otf (ftfont_info);
>                   ^~~~~~~~~~~~~~
>                   ftfont_get_cache
> ftfont.c:2952:18: warning: nested extern declaration of ‘ftfont_get_otf’ [-Wnested-externs]
> ftfont.c:2952:18: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
> ftfont.c:2954:14: warning: implicit declaration of function ‘ftfont_shape_by_flt’; did you mean ‘ftfont_shape_by_hb’? [-Wimplicit-function-declaration]
>        return ftfont_shape_by_flt (lgstring, font, ftfont_info->ft_size->face,
>               ^~~~~~~~~~~~~~~~~~~
>               ftfont_shape_by_hb
> ftfont.c:2954:14: warning: nested extern declaration of ‘ftfont_shape_by_flt’ [-Wnested-externs]
> ftfont.c:2954:14: error: incompatible types when returning type ‘int’ but ‘Lisp_Object {aka struct Lisp_Object}’ was expected
>        return ftfont_shape_by_flt (lgstring, font, ftfont_info->ft_size->face,
>               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>        otf, &ftfont_info->matrix);
>        ~~~~~~~~~~~~~~~~~~~~~~~~~~
> ftfont.c:2957:1: warning: control reaches end of non-void function [-Wreturn-type]
>  }
>  ^
> Makefile:386: recipe for target 'ftfont.o' failed
> make[1]: *** [ftfont.o] Error 1

Does the below fix the problem?

diff --git a/src/ftfont.c b/src/ftfont.c
index bc98896..bbdc936 100644
--- a/src/ftfont.c
+++ b/src/ftfont.c
@@ -2931,7 +2931,7 @@ ftfont_shape_by_hb (Lisp_Object lgstring, FT_Face ft_face, hb_font_t *hb_font,
 
 #endif /* HAVE_HARFBUZZ */
 
-#if defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ
+#if defined HAVE_LIBOTF && (defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ)
 
 Lisp_Object
 ftfont_shape (Lisp_Object lgstring)
@@ -2956,7 +2956,7 @@ ftfont_shape (Lisp_Object lgstring)
     }
 }
 
-#endif /* defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ */
+#endif /* HAVE_LIBOTF && (HAVE_M17N_FLT || defined HAVE_HARFBUZZ) */
 
 static const char *const ftfont_booleans [] = {
   ":antialias",
@@ -3037,7 +3037,7 @@ static struct font_driver const ftfont_driver =
 #ifdef HAVE_LIBOTF
   .otf_capability = ftfont_otf_capability,
 #endif
-#if defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ
+#if defined HAVE_LIBOTF && (defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ)
   .shape = ftfont_shape,
 #endif
 #ifdef HAVE_OTF_GET_VARIATION_GLYPHS

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Mike Kupfer]

[-- Attachment #1: Type: text/plain, Size: 1618 bytes --]

Eli Zaretskii wrote:

> Does the below fix the problem?

It helps, thanks.  I needed to make a similar change in a few other
places, at least for building on Solaris.  I've attached the patch I
ended up with.

I still can't get a clean build, because of

    Checking /export/home/kupfer/src/emacs-git/lisp/leim/quail/japanese.el ...
    Fatal error 11: Segmentation Fault
    Backtrace:
    /export/home/kupfer/src/emacs-git/src/bootstrap-emacs'emacs_backtrace+0x43 [0x5b63f3]
    /export/home/kupfer/src/emacs-git/src/bootstrap-emacs'terminate_due_to_signal+0x8b [0x59c40b]
    /export/home/kupfer/src/emacs-git/src/bootstrap-emacs'0x1b4cfe [0x5b4cfe]
    /export/home/kupfer/src/emacs-git/src/bootstrap-emacs'deliver_thread_signal.constprop.13+0x2a [0x5b4eea]
    /export/home/kupfer/src/emacs-git/src/bootstrap-emacs'handle_sigsegv+0x1f [0x5b4f4f]
    /lib/amd64/libc.so.1'__sighndlr+0x6 [0x7fffbe44ebe6]
    /lib/amd64/libc.so.1'call_user_handler+0x2f1 [0x7fffbe4406b1]
    /export/home/kupfer/src/emacs-git/src/bootstrap-emacs'decode_char+0x3db [0x53804b]
    /export/home/kupfer/src/emacs-git/src/bootstrap-emacs'decode_coding_iso_2022+0x141e [0x544bde]
    /export/home/kupfer/src/emacs-git/src/bootstrap-emacs'decode_coding+0x18f [0x54976f]
    /export/home/kupfer/src/emacs-git/src/bootstrap-emacs'decode_coding_gap+0x15f [0x550f9f]
    /export/home/kupfer/src/emacs-git/src/bootstrap-emacs'Finsert_file_contents+0x11fb [0x5cf5eb]
    ...

I got the same failure building master, so it's not related to HarfBuzz.
I'll follow up about this second failure when I get some time; maybe
next week.

cheers,
mike


[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: patch: HarfBuzz but no libotf --]
[-- Type: text/x-diff, Size: 2755 bytes --]

diff --git a/src/ftcrfont.c b/src/ftcrfont.c
index 6d74d937a7..ae5b0a92ee 100644
--- a/src/ftcrfont.c
+++ b/src/ftcrfont.c
@@ -302,7 +302,7 @@ struct font_driver const ftcrfont_driver =
 #ifdef HAVE_LIBOTF
   .otf_capability = ftfont_otf_capability,
 #endif
-#if defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ
+#if defined HAVE_LIBOTF && (defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ)
   .shape = ftfont_shape,
 #endif
 #ifdef HAVE_OTF_GET_VARIATION_GLYPHS
diff --git a/src/ftfont.c b/src/ftfont.c
index bc98896393..bbdc936ffd 100644
--- a/src/ftfont.c
+++ b/src/ftfont.c
@@ -2931,7 +2931,7 @@ ftfont_shape_by_hb (Lisp_Object lgstring, FT_Face ft_face, hb_font_t *hb_font,
 
 #endif /* HAVE_HARFBUZZ */
 
-#if defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ
+#if defined HAVE_LIBOTF && (defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ)
 
 Lisp_Object
 ftfont_shape (Lisp_Object lgstring)
@@ -2956,7 +2956,7 @@ ftfont_shape (Lisp_Object lgstring)
     }
 }
 
-#endif /* defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ */
+#endif /* HAVE_LIBOTF && (HAVE_M17N_FLT || defined HAVE_HARFBUZZ) */
 
 static const char *const ftfont_booleans [] = {
   ":antialias",
@@ -3037,7 +3037,7 @@ static struct font_driver const ftfont_driver =
 #ifdef HAVE_LIBOTF
   .otf_capability = ftfont_otf_capability,
 #endif
-#if defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ
+#if defined HAVE_LIBOTF && (defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ)
   .shape = ftfont_shape,
 #endif
 #ifdef HAVE_OTF_GET_VARIATION_GLYPHS
diff --git a/src/ftxfont.c b/src/ftxfont.c
index 4d4ff6ee0c..a30b07636e 100644
--- a/src/ftxfont.c
+++ b/src/ftxfont.c
@@ -359,7 +359,7 @@ struct font_driver const ftxfont_driver =
   .otf_capability = ftfont_otf_capability,
 #endif
   .end_for_frame = ftxfont_end_for_frame,
-#if defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ
+#if defined HAVE_LIBOTF && (defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ)
   .shape = ftfont_shape,
 #endif
 #ifdef HAVE_OTF_GET_VARIATION_GLYPHS
diff --git a/src/xftfont.c b/src/xftfont.c
index e0bd243467..5111936f3e 100644
--- a/src/xftfont.c
+++ b/src/xftfont.c
@@ -672,7 +672,7 @@ xftfont_draw (struct glyph_string *s, int from, int to, int x, int y,
   return len;
 }
 
-#if defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ
+#if defined HAVE_LIBOTF && (defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ)
 static Lisp_Object
 xftfont_shape (Lisp_Object lgstring)
 {
@@ -784,7 +784,7 @@ struct font_driver const xftfont_driver =
   .otf_capability = ftfont_otf_capability,
 #endif
   .end_for_frame = xftfont_end_for_frame,
-#if defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ
+#if defined HAVE_LIBOTF && (defined HAVE_M17N_FLT || defined HAVE_HARFBUZZ)
   .shape = xftfont_shape,
 #endif
 #ifdef HAVE_OTF_GET_VARIATION_GLYPHS

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Eli Zaretskii]

> From: Mike Kupfer <mkupfer@alum.berkeley.edu>
> cc: Philipp <p.stephani2@gmail.com>, 33771@debbugs.gnu.org,
>         far.nasiri.m@gmail.com
> Date: Sun, 16 Dec 2018 21:18:04 -0800
> 
> Eli Zaretskii wrote:
> 
> > Does the below fix the problem?
> 
> It helps, thanks.  I needed to make a similar change in a few other
> places, at least for building on Solaris.  I've attached the patch I
> ended up with.

Thanks, pushed.

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Philipp Stephani]

Am Mo., 17. Dez. 2018 um 18:11 Uhr schrieb Eli Zaretskii <eliz@gnu.org>:
>
> > From: Mike Kupfer <mkupfer@alum.berkeley.edu>
> > cc: Philipp <p.stephani2@gmail.com>, 33771@debbugs.gnu.org,
> >         far.nasiri.m@gmail.com
> > Date: Sun, 16 Dec 2018 21:18:04 -0800
> >
> > Eli Zaretskii wrote:
> >
> > > Does the below fix the problem?
> >
> > It helps, thanks.  I needed to make a similar change in a few other
> > places, at least for building on Solaris.  I've attached the patch I
> > ended up with.
>
> Thanks, pushed.

Thanks, it seems to build now without errors.
I still get a few warnings though:

  CC       ftfont.o
ftfont.c:2819:1: warning: ‘ftfont_shape_by_hb’ defined but not used
[-Wunused-function]
 ftfont_shape_by_hb (Lisp_Object lgstring, FT_Face ft_face, hb_font_t *hb_font,
 ^~~~~~~~~~~~~~~~~~
ftfont.c:482:1: warning: ‘ftfont_get_hb_font’ defined but not used
[-Wunused-function]
 ftfont_get_hb_font (struct ftfont_info *ftfont_info)
 ^~~~~~~~~~~~~~~~~~

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Eli Zaretskii]

> From: Philipp Stephani <p.stephani2@gmail.com>
> Date: Mon, 17 Dec 2018 18:20:28 +0100
> Cc: Mike Kupfer <mkupfer@alum.berkeley.edu>, 33771-done@debbugs.gnu.org, 
> 	far.nasiri.m@gmail.com
> 
> Thanks, it seems to build now without errors.
> I still get a few warnings though:
> 
>   CC       ftfont.o
> ftfont.c:2819:1: warning: ‘ftfont_shape_by_hb’ defined but not used
> [-Wunused-function]
>  ftfont_shape_by_hb (Lisp_Object lgstring, FT_Face ft_face, hb_font_t *hb_font,
>  ^~~~~~~~~~~~~~~~~~
> ftfont.c:482:1: warning: ‘ftfont_get_hb_font’ defined but not used
> [-Wunused-function]
>  ftfont_get_hb_font (struct ftfont_info *ftfont_info)
>  ^~~~~~~~~~~~~~~~~~

I tried to fix that, please test.

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Philipp Stephani]

Am Mo., 17. Dez. 2018 um 18:46 Uhr schrieb Eli Zaretskii <eliz@gnu.org>:
>
> > From: Philipp Stephani <p.stephani2@gmail.com>
> > Date: Mon, 17 Dec 2018 18:20:28 +0100
> > Cc: Mike Kupfer <mkupfer@alum.berkeley.edu>, 33771-done@debbugs.gnu.org,
> >       far.nasiri.m@gmail.com
> >
> > Thanks, it seems to build now without errors.
> > I still get a few warnings though:
> >
> >   CC       ftfont.o
> > ftfont.c:2819:1: warning: ‘ftfont_shape_by_hb’ defined but not used
> > [-Wunused-function]
> >  ftfont_shape_by_hb (Lisp_Object lgstring, FT_Face ft_face, hb_font_t *hb_font,
> >  ^~~~~~~~~~~~~~~~~~
> > ftfont.c:482:1: warning: ‘ftfont_get_hb_font’ defined but not used
> > [-Wunused-function]
> >  ftfont_get_hb_font (struct ftfont_info *ftfont_info)
> >  ^~~~~~~~~~~~~~~~~~
>
> I tried to fix that, please test.

Sure, now I get two different warnings:

  CC       ftfont.o
ftfont.c:2804:1: warning: ‘get_hb_unicode_funcs’ defined but not used
[-Wunused-function]
 get_hb_unicode_funcs (void)
 ^~~~~~~~~~~~~~~~~~~~
ftfont.c:482:1: warning: ‘ftfont_get_hb_font’ defined but not used
[-Wunused-function]
 ftfont_get_hb_font (struct ftfont_info *ftfont_info)
 ^~~~~~~~~~~~~~~~~~

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Eli Zaretskii]

> From: Philipp Stephani <p.stephani2@gmail.com>
> Date: Mon, 17 Dec 2018 21:34:52 +0100
> Cc: Mike Kupfer <mkupfer@alum.berkeley.edu>, 33771@debbugs.gnu.org, 
> 	far.nasiri.m@gmail.com
> 
> > >   CC       ftfont.o
> > > ftfont.c:2819:1: warning: ‘ftfont_shape_by_hb’ defined but not used
> > > [-Wunused-function]
> > >  ftfont_shape_by_hb (Lisp_Object lgstring, FT_Face ft_face, hb_font_t *hb_font,
> > >  ^~~~~~~~~~~~~~~~~~
> > > ftfont.c:482:1: warning: ‘ftfont_get_hb_font’ defined but not used
> > > [-Wunused-function]
> > >  ftfont_get_hb_font (struct ftfont_info *ftfont_info)
> > >  ^~~~~~~~~~~~~~~~~~
> >
> > I tried to fix that, please test.
> 
> Sure, now I get two different warnings:
> 
>   CC       ftfont.o
> ftfont.c:2804:1: warning: ‘get_hb_unicode_funcs’ defined but not used
> [-Wunused-function]
>  get_hb_unicode_funcs (void)
>  ^~~~~~~~~~~~~~~~~~~~
> ftfont.c:482:1: warning: ‘ftfont_get_hb_font’ defined but not used
> [-Wunused-function]
>  ftfont_get_hb_font (struct ftfont_info *ftfont_info)
>  ^~~~~~~~~~~~~~~~~~

Any improvement now?

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Philipp Stephani]

Am Di., 18. Dez. 2018 um 16:04 Uhr schrieb Eli Zaretskii <eliz@gnu.org>:
>
> > From: Philipp Stephani <p.stephani2@gmail.com>
> > Date: Mon, 17 Dec 2018 21:34:52 +0100
> > Cc: Mike Kupfer <mkupfer@alum.berkeley.edu>, 33771@debbugs.gnu.org,
> >       far.nasiri.m@gmail.com
> >
> > > >   CC       ftfont.o
> > > > ftfont.c:2819:1: warning: ‘ftfont_shape_by_hb’ defined but not used
> > > > [-Wunused-function]
> > > >  ftfont_shape_by_hb (Lisp_Object lgstring, FT_Face ft_face, hb_font_t *hb_font,
> > > >  ^~~~~~~~~~~~~~~~~~
> > > > ftfont.c:482:1: warning: ‘ftfont_get_hb_font’ defined but not used
> > > > [-Wunused-function]
> > > >  ftfont_get_hb_font (struct ftfont_info *ftfont_info)
> > > >  ^~~~~~~~~~~~~~~~~~
> > >
> > > I tried to fix that, please test.
> >
> > Sure, now I get two different warnings:
> >
> >   CC       ftfont.o
> > ftfont.c:2804:1: warning: ‘get_hb_unicode_funcs’ defined but not used
> > [-Wunused-function]
> >  get_hb_unicode_funcs (void)
> >  ^~~~~~~~~~~~~~~~~~~~
> > ftfont.c:482:1: warning: ‘ftfont_get_hb_font’ defined but not used
> > [-Wunused-function]
> >  ftfont_get_hb_font (struct ftfont_info *ftfont_info)
> >  ^~~~~~~~~~~~~~~~~~
>
> Any improvement now?

We're down to 1 warning:

  CC       ftfont.o
ftfont.c:482:1: warning: ‘ftfont_get_hb_font’ defined but not used
[-Wunused-function]
 ftfont_get_hb_font (struct ftfont_info *ftfont_info)
 ^~~~~~~~~~~~~~~~~~

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Eli Zaretskii]

> From: Philipp Stephani <p.stephani2@gmail.com>
> Date: Tue, 18 Dec 2018 16:06:48 +0100
> Cc: Mike Kupfer <mkupfer@alum.berkeley.edu>, 33771@debbugs.gnu.org, 
> 	far.nasiri.m@gmail.com
> 
> We're down to 1 warning:
> 
>   CC       ftfont.o
> ftfont.c:482:1: warning: ‘ftfont_get_hb_font’ defined but not used
> [-Wunused-function]
>  ftfont_get_hb_font (struct ftfont_info *ftfont_info)
>  ^~~~~~~~~~~~~~~~~~

Should be fixed now.

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Philipp Stephani]

Am Di., 18. Dez. 2018 um 19:47 Uhr schrieb Eli Zaretskii <eliz@gnu.org>:
>
> > From: Philipp Stephani <p.stephani2@gmail.com>
> > Date: Tue, 18 Dec 2018 16:06:48 +0100
> > Cc: Mike Kupfer <mkupfer@alum.berkeley.edu>, 33771@debbugs.gnu.org,
> >       far.nasiri.m@gmail.com
> >
> > We're down to 1 warning:
> >
> >   CC       ftfont.o
> > ftfont.c:482:1: warning: ‘ftfont_get_hb_font’ defined but not used
> > [-Wunused-function]
> >  ftfont_get_hb_font (struct ftfont_info *ftfont_info)
> >  ^~~~~~~~~~~~~~~~~~
>
> Should be fixed now.

Confirmed, thanks.

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Philipp Stephani]

Am So., 16. Dez. 2018 um 20:52 Uhr schrieb Eli Zaretskii <eliz@gnu.org>:
>
> > From: Philipp <p.stephani2@gmail.com>
> > Date: Sun, 16 Dec 2018 19:57:54 +0100
> >
> >
> > Got the following compiler error when trying to compile the Harfbuzz
> > branch:
> >
> >   CC       ftfont.o
> > ftfont.c: In function ‘ftfont_shape’:
> > ftfont.c:2952:7: error: unknown type name ‘OTF’
> >        OTF *otf = ftfont_get_otf (ftfont_info);
> >        ^~~
>
> You are building without libotf?

Yes, my configure output contains

  Does Emacs use -lotf?                                   no

bug#33771: 27.0.50; Error building Harfbuzz branch on Debian testing

[Mike Kupfer]

>   CC       ftfont.o
> ftfont.c: In function ‘ftfont_shape’:
> ftfont.c:2952:7: error: unknown type name ‘OTF’
>        OTF *otf = ftfont_get_otf (ftfont_info);
>        ^~~
[...]

Heh, I was just about to report the same build problem on Solaris 11.4,
which has HarfBuzz but apparently lacks libotf.

mike