Issues compiling on Jammy

[kript]

Trying to compile this on Ubuntu 22.04, I ran into this issue;

In file included from /usr/include/string.h:535,
                 from utf8wc.c:18:
In function ‘strncpy’,
    inlined from ‘utf8_split’ at utf8wc.c:287:11:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:95:10: warning: ‘__builtin_strncpy’ output truncated before terminating nul copying as many bytes from a string as its length [-Wstringop-truncation]
   95 |   return __builtin___strncpy_chk (__dest, __src, __len,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   96 |                                   __glibc_objsize (__dest));
      |                                   ~~~~~~~~~~~~~~~~~~~~~~~~~
utf8wc.c: In function ‘utf8_split’:
utf8wc.c:284:21: note: length computed here
  284 |           long L2 = strlen(ret[i-1]);
      |                     ^~~~~~~~~~~~~~~~
make[1]: Leaving directory '/home/john/xscreensaver-5.36-build/xscreensaver-5.36/utils'
make[1]: Entering directory '/home/john/xscreensaver-5.36-build/xscreensaver-5.36/jwxyz'
make[1]: Nothing to be done for 'default'.
make[1]: Leaving directory '/home/john/xscreensaver-5.36-build/xscreensaver-5.36/jwxyz'
make[1]: Entering directory '/home/john/xscreensaver-5.36-build/xscreensaver-5.36/hacks'
gcc -pedantic -Wall -Wstrict-prototypes -Wnested-externs -Wmissing-prototypes -Wno-overlength-strings -Wdeclaration-after-statement -std=c89 -U__STRICT_ANSI__ -c -I. -I. -I./../utils -I..  -DSTANDALONE -DHAVE_CONFIG_H  -g -O2  attraction.c
gcc -pedantic -Wall -Wstrict-prototypes -Wnested-externs -Wmissing-prototypes -Wno-overlength-strings -Wdeclaration-after-statement -std=c89 -U__STRICT_ANSI__ -c -I. -I. -I./../utils -I..  -DSTANDALONE -DHAVE_CONFIG_H  -g -O2  screenhack.c
gcc -pedantic -Wall -Wstrict-prototypes -Wnested-externs -Wmissing-prototypes -Wno-overlength-strings -Wdeclaration-after-statement -std=c89 -U__STRICT_ANSI__ -c -I. -I. -I./../utils -I..  -DSTANDALONE -DHAVE_CONFIG_H  -g -O2  fps.c
gcc -pedantic -Wall -Wstrict-prototypes -Wnested-externs -Wmissing-prototypes -Wno-overlength-strings -Wdeclaration-after-statement -std=c89 -U__STRICT_ANSI__ -L/usr/local/lib -o attraction attraction.o	screenhack.o fps.o ../utils/resources.o ../utils/visual.o ../utils/usleep.o ../utils/yarandom.o ../utils/utf8wc.o ../utils/xmu.o ../utils/xft.o  ../utils/hsv.o ../utils/colors.o ../utils/spline.o     -lSM -lICE  -lXt -lX11  -lXext  -lm
/usr/bin/ld: cannot find -lXext: No such file or directory
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:582: attraction] Error 1
make[1]: Leaving directory '/home/john/xscreensaver-5.36-build/xscreensaver-5.36/hacks'
make: *** [Makefile:25: default] Error 5

build failed... sorry

To get to this point, I needed to have installed;

sudo apt-get install libegl1-mesa-dev xscreensaver xscreensaver-data-extra xscreensaver-gl xscreensaver-gl-extra libxt-dev

Not being a C coder, I am not sure how to proceed from here! If can can provide any more information, do say....

[davebiffuk]

The string.h warning is new to me. I haven't tried this on 22.04 yet.

For the linker error, did you do apt-get build-dep xscreensaver-gl at any point beforehand to get the build dependencies installed?

[kript]

I didn't (apologies if that was in the notes). Those packages are quite right on jammy though;

$ sudo apt-get install build-dep xscreensaver-gl
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package build-dep

[kript]

(should be aren't quite right)

[davebiffuk]

You don't want that "install" in there - "build-dep" is an instruction to apt-get, to install whatever packages are necessary to build the named package it's, not the name of a package to install.

[kript]

Ah, oops. Well, after adding deb-src versions of all the uncommented out lines in my /etc/apt/sources.list

I then re-ran doit and got further but now;

In file included from /usr/include/glib-2.0/gio/gio.h:132,
                 from /usr/include/gdk-pixbuf-2.0/gdk-pixbuf/gdk-pixbuf-core.h:33,
                 from /usr/include/gdk-pixbuf-2.0/gdk-pixbuf/gdk-pixbuf.h:34,
                 from xpm-pixmap.c:34:
/usr/include/glib-2.0/gio/gresolver.h:60:50: warning: comma at end of enumerator list [-Wpedantic]
   60 |   G_RESOLVER_NAME_LOOKUP_FLAGS_IPV6_ONLY = 1 << 1,
      |                                                  ^
xpm-pixmap.c:39:12: fatal error: gdk-pixbuf/gdk-pixbuf-xlib.h: No such file or directory
   39 | #  include <gdk-pixbuf/gdk-pixbuf-xlib.h>
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[1]: *** [Makefile:541: xpm-pixmap.o] Error 1
make[1]: Leaving directory '/home/john/xscreensaver-5.36-build/xscreensaver-5.36/hacks'
make: *** [Makefile:25: default] Error 5

build failed... sorry