[ruby-core:122939] [Ruby Bug#21536] ERROR: Error installing tk:

9 Aug 2025

      Issue #21536 has been reported by sevkme (sevk kk).

----------------------------------------
Bug #21536: ERROR:  Error installing tk:
https://bugs.ruby-lang.org/issues/21536

* Author: sevkme (sevk kk)
* Status: Open
* ruby -v: ruby 3.4.4 (2025-05-14 revision a38531fd3f) +YJIT +PRISM [x86_64-linux]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
``` shell
kkar4 :: ~ » pacman -Ss tcl | grep install
extra/tcl 8.6.16-1 [installed]
extra/tk 8.6.16-1 [installed]
```

``` shell
kkar4 :: ~ »  CFLAGS="-Wold-style-definition" gem install tk
Building native extensions. This could take a while...
ERROR:  Error installing tk:
	ERROR: Failed to build gem native extension.

    current directory: /usr/lib/ruby/gems/3.4.0/gems/tk-0.5.1/ext/tk
/usr/bin/ruby extconf.rb
check functions.checking for ruby_native_thread_p() in ruby.h... yes
checking for rb_errinfo() in ruby.h... yes
checking for rb_hash_lookup() in ruby.h... yes
checking for rb_proc_new() in ruby.h... yes
checking for rb_sourcefile() in ruby.h... yes
checking for rb_thread_alive_p() in ruby.h... no
checking for rb_thread_check_trap_pending() in ruby.h... yes
checking for ruby_enc_find_basename() in ruby.h... yes
check libraries.checking for t_open() in -lnsl... no
checking for socket() in -lsocket... no
checking for dlopen() in -ldl... yes
checking for log() in -lm... yes
Use ActiveTcl libraries (if available).
Search tclConfig.sh and tkConfig.sh.
Valid [tclConfig.sh, tkConfig.sh] are found in [["/usr/lib", "/usr/lib"], ["/usr/lib64", "/usr/lib64"]]
Use [tclConfig.sh, tkConfig.sh] == ["/usr/lib/tclConfig.sh", "/usr/lib/tkConfig.sh"]
Use X11 libraries (or use TK_XINCLUDES/TK_XLIBSW information on tkConfig.sh).
checking for XOpenDisplay() in -lX11... yes
creating Makefile

Find Tcl/Tk libraries. Make tcltklib.so which is required by Ruby/Tk.

current directory: /usr/lib/ruby/gems/3.4.0/gems/tk-0.5.1/ext/tk
make DESTDIR\= sitearchdir\=./.gem.20250809-2512403-8d3buu sitelibdir\=./.gem.20250809-2512403-8d3buu clean

current directory: /usr/lib/ruby/gems/3.4.0/gems/tk-0.5.1/ext/tk
make DESTDIR\= sitearchdir\=./.gem.20250809-2512403-8d3buu sitelibdir\=./.gem.20250809-2512403-8d3buu
compiling stubs.c
stubs.c: In function '_nativethread_consistency_check':
stubs.c:42:1: warning: old-style function definition [-Wold-style-definition]
   42 | _nativethread_consistency_check(ip)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compiling tcltklib.c
tcltklib.c: In function 'get_ip':
tcltklib.c:784:1: warning: old-style function definition [-Wold-style-definition]
  784 | get_ip(self)
      | ^~~~~~
tcltklib.c: In function 'deleted_ip':
tcltklib.c:802:1: warning: old-style function definition [-Wold-style-definition]
  802 | deleted_ip(ptr)
      | ^~~~~~~~~~
tcltklib.c: In function 'rbtk_preserve_ip':
tcltklib.c:818:1: warning: old-style function definition [-Wold-style-definition]
  818 | rbtk_preserve_ip(ptr)
      | ^~~~~~~~~~~~~~~~
tcltklib.c: In function 'rbtk_release_ip':
tcltklib.c:832:1: warning: old-style function definition [-Wold-style-definition]
  832 | rbtk_release_ip(ptr)
      | ^~~~~~~~~~~~~~~
tcltklib.c: In function 'tcltkip_init_tk':
tcltklib.c:1327:1: warning: old-style function definition [-Wold-style-definition]
 1327 | tcltkip_init_tk(interp)
      | ^~~~~~~~~~~~~~~
tcltklib.c: In function 'pending_exception_check1':
tcltklib.c:1435:1: warning: old-style function definition [-Wold-style-definition]
 1435 | pending_exception_check1(thr_crit_bup, ptr)
      | ^~~~~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'call_original_exit':
tcltklib.c:1480:1: warning: old-style function definition [-Wold-style-definition]
 1480 | call_original_exit(ptr, state)
      | ^~~~~~~~~~~~~~~~~~
tcltklib.c: In function '_timer_for_tcl':
tcltklib.c:1631:1: warning: old-style function definition [-Wold-style-definition]
 1631 | _timer_for_tcl(clientData)
      | ^~~~~~~~~~~~~~
tcltklib.c: In function 'set_eventloop_window_mode':
tcltklib.c:1682:1: warning: old-style function definition [-Wold-style-definition]
 1682 | set_eventloop_window_mode(self, mode)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'get_eventloop_window_mode':
tcltklib.c:1697:1: warning: old-style function definition [-Wold-style-definition]
 1697 | get_eventloop_window_mode(self)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'set_eventloop_tick':
tcltklib.c:1708:1: warning: old-style function definition [-Wold-style-definition]
 1708 | set_eventloop_tick(self, tick)
      | ^~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'get_eventloop_tick':
tcltklib.c:1742:1: warning: old-style function definition [-Wold-style-definition]
 1742 | get_eventloop_tick(self)
      | ^~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'ip_set_eventloop_tick':
tcltklib.c:1749:1: warning: old-style function definition [-Wold-style-definition]
 1749 | ip_set_eventloop_tick(self, tick)
      | ^~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'ip_get_eventloop_tick':
tcltklib.c:1768:1: warning: old-style function definition [-Wold-style-definition]
 1768 | ip_get_eventloop_tick(self)
      | ^~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'set_no_event_wait':
tcltklib.c:1775:1: warning: old-style function definition [-Wold-style-definition]
 1775 | set_no_event_wait(self, wait)
      | ^~~~~~~~~~~~~~~~~
tcltklib.c: In function 'get_no_event_wait':
tcltklib.c:1793:1: warning: old-style function definition [-Wold-style-definition]
 1793 | get_no_event_wait(self)
      | ^~~~~~~~~~~~~~~~~
tcltklib.c: In function 'ip_set_no_event_wait':
tcltklib.c:1800:1: warning: old-style function definition [-Wold-style-definition]
 1800 | ip_set_no_event_wait(self, wait)
      | ^~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'ip_get_no_event_wait':
tcltklib.c:1819:1: warning: old-style function definition [-Wold-style-definition]
 1819 | ip_get_no_event_wait(self)
      | ^~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'set_eventloop_weight':
tcltklib.c:1826:1: warning: old-style function definition [-Wold-style-definition]
 1826 | set_eventloop_weight(self, loop_max, no_event)
      | ^~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'get_eventloop_weight':
tcltklib.c:1846:1: warning: old-style function definition [-Wold-style-definition]
 1846 | get_eventloop_weight(self)
      | ^~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'ip_set_eventloop_weight':
tcltklib.c:1853:1: warning: old-style function definition [-Wold-style-definition]
 1853 | ip_set_eventloop_weight(self, loop_max, no_event)
      | ^~~~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'ip_get_eventloop_weight':
tcltklib.c:1873:1: warning: old-style function definition [-Wold-style-definition]
 1873 | ip_get_eventloop_weight(self)
      | ^~~~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'set_max_block_time':
tcltklib.c:1880:1: warning: old-style function definition [-Wold-style-definition]
 1880 | set_max_block_time(self, time)
      | ^~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'lib_evloop_thread_p':
tcltklib.c:1913:1: warning: old-style function definition [-Wold-style-definition]
 1913 | lib_evloop_thread_p(self)
      | ^~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'lib_evloop_abort_on_exc':
tcltklib.c:1926:1: warning: old-style function definition [-Wold-style-definition]
 1926 | lib_evloop_abort_on_exc(self)
      | ^~~~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'ip_evloop_abort_on_exc':
tcltklib.c:1939:1: warning: old-style function definition [-Wold-style-definition]
 1939 | ip_evloop_abort_on_exc(self)
      | ^~~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'lib_evloop_abort_on_exc_set':
tcltklib.c:1946:1: warning: old-style function definition [-Wold-style-definition]
 1946 | lib_evloop_abort_on_exc_set(self, val)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'ip_evloop_abort_on_exc_set':
tcltklib.c:1960:1: warning: old-style function definition [-Wold-style-definition]
 1960 | ip_evloop_abort_on_exc_set(self, val)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'lib_num_of_mainwindows_core':
tcltklib.c:1979:1: warning: old-style function definition [-Wold-style-definition]
 1979 | lib_num_of_mainwindows_core(self, argc, argv)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'lib_num_of_mainwindows':
tcltklib.c:1992:1: warning: old-style function definition [-Wold-style-definition]
 1992 | lib_num_of_mainwindows(self)
      | ^~~~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'call_DoOneEvent':

tcltklib.c:2045:21: error: passing argument 1 of 'tk_funcall' from incompatible pointer type [-Wincompatible-pointer-types]

 2045 |   return tk_funcall(call_DoOneEvent_core, 0, (VALUE*)NULL, flag_val);
      |                     ^~~~~~~~~~~~~~~~~~~~
      |                     |
      |                     VALUE (*)(VALUE) {aka long unsigned int (*)(long unsigned int)}
In file included from /usr/include/ruby-3.4.0/ruby/defines.h:77,
                 from /usr/include/ruby-3.4.0/ruby/ruby.h:25,
                 from /usr/include/ruby-3.4.0/ruby.h:38,
                 from tcltklib.c:10:
tcltklib.c:258:28: note: expected 'VALUE (*)(void)' {aka 'long unsigned int (*)(void)'} but argument is of type 'VALUE (*)(VALUE)' {aka 'long unsigned int (*)(long unsigned int)'}
  258 | static VALUE tk_funcall _((VALUE(), int, VALUE*, VALUE));
      |                            ^~~~~~~
/usr/include/ruby-3.4.0/ruby/backward/2/stdarg.h:33:18: note: in definition of macro '_'
   33 | # define _(args) args
      |                  ^~~~
tcltklib.c:2021:1: note: 'call_DoOneEvent_core' declared here
 2021 | call_DoOneEvent_core(VALUE flag_val)
      | ^~~~~~~~~~~~~~~~~~~~
tcltklib.c: In function 'lib_eventloop_core':
tcltklib.c:2197:1: warning: old-style function definition [-Wold-style-definition]
 2197 | lib_eventloop_core(check_root, update_flag, check_var, interp)
      | ^~~~~~~~~~~~~~~~~~

```

-- 
https://bugs.ruby-lang.org/