Error installing on OS X 10.11.3

[yurivish]

The error is Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found. Tried installing immediately on top of the newest release of Rakudo Star, since Readline was recommended at the launch of the repl.

Full log:

panda install Readline
==> Readline depends on LibraryCheck
==> Fetching LibraryCheck
==> Building LibraryCheck
==> Testing LibraryCheck
t/01-basic.t .. ok
All tests successful.
Files=1, Tests=4,  6 wallclock secs ( 0.01 usr  0.01 sys +  5.88 cusr  0.32 csys =  6.22 CPU)
Result: PASS
==> Installing LibraryCheck
==> Successfully installed LibraryCheck
==> Fetching Readline
==> Building Readline
==> Testing Readline
t/01-load.t .. ok

# Failed test 'initialize'
# at t/02-base.t line 10
# Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'macro-dumper lives'
# at t/02-base.t line 18
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found
    # Looks like you failed 1 test of 1

# Failed test 'dumpers'
# at t/02-base.t line 13

# Failed test 'set-prompt lives'
# at t/02-base.t line 27
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'expand-prompt lives'
# at t/02-base.t line 29
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'on-new-line-with-prompt lives'
# at t/02-base.t line 31
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'save-prompt lives'
# at t/02-base.t line 33
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'restore-prompt lives'
# at t/02-base.t line 35
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found
    # Looks like you failed 5 tests of 5

# Failed test 'prompt'
# at t/02-base.t line 24

# Failed test 'tilde-expand lives'
# at t/02-base.t line 46
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'tilde-expand-word lives'
# at t/02-base.t line 48
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found
    # Looks like you failed 2 tests of 2

# Failed test 'tilde'
# at t/02-base.t line 39

# Failed test 'prep-terminal lives'
# at t/02-base.t line 58
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'deprep-terminal lives'
# at t/02-base.t line 60
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'reset-terminal'
# at t/02-base.t line 62
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found
    # Looks like you failed 3 tests of 3

# Failed test 'terminal'
# at t/02-base.t line 54

# Failed test 'reset-line-state lives'
# at t/02-base.t line 70
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found
    # Looks like you failed 1 test of 1

# Failed test 'state'
# at t/02-base.t line 68

# Failed test 'free-undo-list lives'
# at t/02-base.t line 81
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'do-undo lives'
# at t/02-base.t line 83
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'begin-undo-group lives'
# at t/02-base.t line 85
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'end-undo-group lives'
# at t/02-base.t line 87
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found
    # Looks like you failed 4 tests of 4

# Failed test 'undo'
# at t/02-base.t line 80

# Failed test 'funmap-names lives'
# at t/02-base.t line 99
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found
    # Looks like you failed 1 test of 1

# Failed test 'funmap'
# at t/02-base.t line 91

# Failed test 'set-screen-size'
# at t/02-base.t line 106
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'reset-screen-size lives'
# at t/02-base.t line 110
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found
    # Looks like you failed 2 tests of 2

# Failed test 'screen'
# at t/02-base.t line 103

# Failed test 'insert-text lives'
# at t/02-base.t line 118
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'delete-text lives'
# at t/02-base.t line 120
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'kill-text lives'
# at t/02-base.t line 122
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'copy-text lives'
# at t/02-base.t line 124
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found
    # Looks like you failed 4 tests of 4

# Failed test 'text'
# at t/02-base.t line 114

# Failed test 'make-bare-keymap lives'
# at t/02-base.t line 132
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'copy-keymap lives'
# at t/02-base.t line 134
    # Type check failed in binding $map; expected Readline::Keymap but got Any

# Failed test 'make-keymap lives'
# at t/02-base.t line 136
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'discard-keymap lives'
# at t/02-base.t line 138
    # Type check failed in binding $map; expected Readline::Keymap but got Any

# Failed test 'free-keymap lives'
# at t/02-base.t line 140
    # Type check failed in binding $map; expected Readline::Keymap but got Any

# Failed test 'get-keymap-by-name lives'
# at t/02-base.t line 142
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'get-keymap lives'
# at t/02-base.t line 144
    # Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found

# Failed test 'get-keymap-name lives'
# at t/02-base.t line 146
    # Type check failed in binding $map; expected Readline::Keymap but got Any

# Failed test 'set-keymap lives'
# at t/02-base.t line 148
    # Type check failed in binding $map; expected Readline::Keymap but got Any
    # Looks like you failed 9 tests of 9

# Failed test 'keymap'
# at t/02-base.t line 128
Cannot locate native library 'libreadline.so.6': dlopen(libreadline.so.6, 1): image not found
  in method setup at /Users/yurivish/Downloads/rakudo-star-2016.01/install/share/perl6/sources/075EFE4B4CDAAF73190194EA876F81A1F128D1A2 line 230
  in method CALL-ME at /Users/yurivish/Downloads/rakudo-star-2016.01/install/share/perl6/sources/075EFE4B4CDAAF73190194EA876F81A1F128D1A2 line 241
  in method make-bare-keymap at /Users/yurivish/.panda-work/1454915611_2/lib/Readline.pm line 1040
  in sub  at t/02-base.t line 159
  in sub subtest at /Users/yurivish/Downloads/rakudo-star-2016.01/install/share/perl6/sources/39D1BEBEB786F0DE0B82489F3F02F5C672CBA1F7 line 296
  in sub  at t/02-base.t line 158
  in sub subtest at /Users/yurivish/Downloads/rakudo-star-2016.01/install/share/perl6/sources/39D1BEBEB786F0DE0B82489F3F02F5C672CBA1F7 line 296
  in block <unit> at t/02-base.t line 152

t/02-base.t .. 
Dubious, test returned 1 (wstat 256, 0x100)
Failed 17/17 subtests 

Test Summary Report
-------------------
t/02-base.t (Wstat: 256 Tests: 11 Failed: 11)
  Failed tests:  1-11
  Non-zero exit status: 1
  Parse errors: Bad plan.  You planned 17 tests but ran 11.
Files=2, Tests=12, 18 wallclock secs ( 0.03 usr  0.01 sys + 16.77 cusr  0.51 csys = 17.32 CPU)
Result: FAIL
test stage failed for Readline: Tests failed
  in method install at /Users/yurivish/Downloads/rakudo-star-2016.01/install/share/perl6/site/sources/9036849E1656E91211D00AB4530B81D29A7D6E82 line 157
  in method resolve at /Users/yurivish/Downloads/rakudo-star-2016.01/install/share/perl6/site/sources/9036849E1656E91211D00AB4530B81D29A7D6E82 line 234
  in sub MAIN at /Users/yurivish/Downloads/rakudo-star-2016.01/install/share/perl6/site/resources/76CD539C815A33F2891D2EF3D6D96B1081567AD1 line 18
  in block <unit> at /Users/yurivish/Downloads/rakudo-star-2016.01/install/share/perl6/site/resources/76CD539C815A33F2891D2EF3D6D96B1081567AD1 line 150


Failure Summary
----------------
Readline(
    *test stage failed for Readline: Tests failed)

[raiph]

See also https://irclog.perlgeek.de/perl6/2016-01-08#i_11850841 and https://irclog.perlgeek.de/perl6/2016-01-08#i_11850868

[dha]

Yes, OS X comes with libedit, apparently, rather than libreadline. If you use Homebrew to install packages on your OS X system, it deals with this problem(?) thus: It does not link to readline in /usr/local, but rather suggests that you build libraries that require readline with flags to explicitly locate it (e. g. -L/usr/local/opt/readline/lib).

So, I suppose in that particular case the install process could check for a Homebrew install of readline, and act accordingly, but it's clearly not a general solution for OS X. That said, I don't really know how this should be solved in the general case.

Not sure how much that helps, but I think that gives a bit more detail than the IRC log above.