MacOS Catalina 10.15.7 Ruby 2.6.5 Tcl/Tk version 8.5 (standard)
When I try to install normally as below, it fails.
$ gem install tk
Fetching tk-0.3.0.gem
Building native extensions. This could take a while...
ERROR: Error installing tk:
ERROR: Failed to build gem native extension.
current directory: /Users/****/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/tk-0.3.0/ext/tk
/Users/****/.rbenv/versions/2.6.5/bin/ruby -I /Users/****/.rbenv/versions/2.6.5/lib/ruby/2.6.0 -r ./siteconf20201215-2090-g0qb3m.rb 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.
Fail to find [tclConfig.sh, tkConfig.sh]
Use X11 libraries (or use TK_XINCLUDES/TK_XLIBSW information on tkConfig.sh).
checking for XOpenDisplay() in -lX11... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
~~~ Abbreviation ~~~
Warning:: cannot find X11 library. tcltklib will not be compiled (tcltklib is disabled on your Ruby. That is, Ruby/Tk will not work). Please check configure options. If your Tcl/Tk don't require X11, please try --without-X11.
Can't find X11 libraries.
So, can't make tcltklib.so which is required by Ruby/Tk.
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Users/****/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/extensions/x86_64-darwin-19/2.6.0/tk-0.3.0/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /Users/****/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/tk-0.3.0 for inspection.
Results logged to /Users/****/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/extensions/x86_64-darwin-19/2.6.0/tk-0.3.0/gem_make.out
Looking at the error, it says Fail to find [tclConfig.sh, tkConfig.sh], which is very important.
I couldn't find it even though I searched for it, so I'll write down the solution in the hope that it will be useful.
After a lot of research, it seems that you can specify the location of the Tcl/Tk library with the Configuration Option.
So, execute as follows.
$ gem install tk -- --with-tcltkversion=8.5 \
--with-tcl-lib=/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/Tcl.framework/Versions/8.5 \
--with-tk-lib=/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5 \
Building native extensions. This could take a while...
ERROR: Error installing tk:
ERROR: Failed to build gem native extension.
current directory: /Users/****/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/tk-0.3.0/ext/tk
/Users/****/.rbenv/versions/2.6.5/bin/ruby -I /Users/****/.rbenv/versions/2.6.5/lib/ruby/2.6.0 -r ./siteconf20201215-15693-14ro7nf.rb extconf.rb
Configure options for Ruby/Tk may be updated.
So, delete files which depend on old configs.
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
Specified Tcl/Tk version is ["8.5", "8.5"]
Use ActiveTcl libraries (if available).
Search tclConfig.sh and tkConfig.sh.
Fail to find [tclConfig.sh, tkConfig.sh]
Search tcl.h
checking for tcl.h... yes
Search tk.h
checking for tk.h... yes
Search Tcl library.checking for Tcl_FindExecutable() in -ltclstub8.5... no
.checking for Tcl_FindExecutable() in -ltclstub8.5... no
.checking for Tcl_FindExecutable() in -ltclstub8.5... no
.checking for Tcl_FindExecutable() in -ltclstub8.5... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
~~~ Abbreviation ~~~
Warning:: cannot find Tcl library. tcltklib will not be compiled (tcltklib is disabled on your Ruby. That is, Ruby/Tk will not work). Please check configure options.
Can't find proper Tcl/Tk libraries. So, can't make tcltklib.so which is required by Ruby/Tk.
If you have Tcl/Tk libraries on your environment, you may be able to use them with configure options (see ext/tk/README.tcltklib).
At present, Tcl/Tk8.6 is not supported. Although you can try to use Tcl/Tk8.6 with configure options, it will not work correctly. I recommend you to use Tcl/Tk8.5 or 8.4.
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Users/****/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/extensions/x86_64-darwin-19/2.6.0/tk-0.3.0/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /Users/****/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/gems/tk-0.3.0 for inspection.
Results logged to /Users/****/.rbenv/versions/2.6.5/lib/ruby/gems/2.6.0/extensions/x86_64-darwin-19/2.6.0/tk-0.3.0/gem_make.out
I specified the directory where the library is located, but it didn't work. .. It seems that the library cannot be found. ..
After all, it was solved by the following.
$ gem install tk -- --with-tcltkversion=8.5 \
--with-tcllib=tclstub8.5 \
--with-tklib=tkstub8.5 \
--enable-tcltk_stubs
Building native extensions with: '--with-tcltkversion=8.5 --with-tcllib=tclstub8.5 --with-tklib=tkstub8.5 --enable-tcltk_stubs'
This could take a while...
Successfully installed tk-0.3.0
Parsing documentation for tk-0.3.0
Installing ri documentation for tk-0.3.0
Done installing documentation for tk after 8 seconds
1 gem installed
For --with-tcllib, enter the *** part of the tcl library file name libtcl ***. So (example: libtcl8.5.so ==> --with-tcllib = tcl8.5). ..
By the way, the extension may be so or a.
In my case it was libtclstub8.5.a, so I wrote it that way.
Since the file name has stub, I added --enable-tcltk_stubs and forcibly enabled the stub, and I was able to install it.
When I tried to implement it after installation, it failed to compile inside Ruby, so it seems that it can not be implemented with standard Tcl/Tk. After uninstalling Ruby/Tk and installing ActiveTcl8.5, I was able to implement it normally with gem install tk again. Return the time so far. ..
(By the way, 8.6 didn't work)
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