I'm trying to install Readline.
(The system is Linux Mint Mate 18.3, the same is true for Lubuntu 17.10).
$ zef install Readline
The installation process begins but later is aborted with the following messages:
===> Searching for: Readline
===> Searching for missing dependencies: LibraryCheck
===> Testing: LibraryCheck:ver<0.0.6>:auth<github:jonathanstowe>
===> Testing [OK] for LibraryCheck:ver<0.0.6>:auth<github:jonathanstowe>
===> Testing: Readline:ver<0.0.2>:auth<github:drforr>
# Failed test 'initialize'
# at t/02-base.t line 10
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'macro-dumper lives'
# at t/02-base.t line 18
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# 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': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'expand-prompt lives'
# at t/02-base.t line 29
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'on-new-line-with-prompt lives'
# at t/02-base.t line 31
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'save-prompt lives'
# at t/02-base.t line 33
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'restore-prompt lives'
# at t/02-base.t line 35
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# 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': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'tilde-expand-word lives'
# at t/02-base.t line 48
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# 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': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'deprep-terminal lives'
# at t/02-base.t line 60
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'reset-terminal'
# at t/02-base.t line 62
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# 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': libreadline.so: cannot open shared object file: No such file or directory
# 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': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'do-undo lives'
# at t/02-base.t line 83
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'begin-undo-group lives'
# at t/02-base.t line 85
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'end-undo-group lives'
# at t/02-base.t line 87
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# 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': libreadline.so: cannot open shared object file: No such file or directory
# 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': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'reset-screen-size lives'
# at t/02-base.t line 110
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# 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': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'delete-text lives'
# at t/02-base.t line 120
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'kill-text lives'
# at t/02-base.t line 122
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'copy-text lives'
# at t/02-base.t line 124
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# 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': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'copy-keymap lives'
# at t/02-base.t line 134
# Type check failed in binding to parameter '$map'; expected Readline::Keymap but got Any (Any)
# Failed test 'make-keymap lives'
# at t/02-base.t line 136
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'discard-keymap lives'
# at t/02-base.t line 138
# Type check failed in binding to parameter '$map'; expected Readline::Keymap but got Any (Any)
# Failed test 'get-keymap-by-name lives'
# at t/02-base.t line 145
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'get-keymap lives'
# at t/02-base.t line 147
# Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
# Failed test 'get-keymap-name lives'
# at t/02-base.t line 149
# Type check failed in binding to parameter '$map'; expected Readline::Keymap but got Any (Any)
# Failed test 'set-keymap lives'
# at t/02-base.t line 151
# Type check failed in binding to parameter '$map'; expected Readline::Keymap but got Any (Any)
# Looks like you failed 8 tests of 8
# Failed test 'keymap'
# at t/02-base.t line 128
Cannot locate native library 'libreadline.so': libreadline.so: cannot open shared object file: No such file or directory
in method setup at /opt/rakudo-pkg/share/perl6/sources/24DD121B5B4774C04A7084827BFAD92199756E03 (NativeCall) line 289
in method CALL-ME at /opt/rakudo-pkg/share/perl6/sources/24DD121B5B4774C04A7084827BFAD92199756E03 (NativeCall) line 576
in method make-bare-keymap at /home/evb/.zef/store/perl6-readline.git/e2cf431a87c36d420a3f2737b2cbc160efeb9233/lib/Readline.pm (Readline) line 1040
in sub at t/02-base.t line 162
in sub subtest at /opt/rakudo-pkg/share/perl6/sources/C712FE6969F786C9380D643DF17E85D06868219E (Test) line 411
in sub at t/02-base.t line 161
in sub subtest at /opt/rakudo-pkg/share/perl6/sources/C712FE6969F786C9380D643DF17E85D06868219E (Test) line 411
in block <unit> at t/02-base.t line 155
===> Testing [FAIL]: Readline:ver<0.0.2>:auth<github:drforr>
Aborting due to test failure: Readline:ver<0.0.2>:auth<github:drforr> (use --force-test to override)
in code at /home/evb/.perl6/sources/0061125F96D1E60B6E3B0001A4CB4D4188DF4869 (Zef::Client) line 375
in method test at /home/evb/.perl6/sources/0061125F96D1E60B6E3B0001A4CB4D4188DF4869 (Zef::Client) line 353
in code at /home/evb/.perl6/sources/0061125F96D1E60B6E3B0001A4CB4D4188DF4869 (Zef::Client) line 530
in sub at /home/evb/.perl6/sources/0061125F96D1E60B6E3B0001A4CB4D4188DF4869 (Zef::Client) line 527
in method install at /home/evb/.perl6/sources/0061125F96D1E60B6E3B0001A4CB4D4188DF4869 (Zef::Client) line 633
in sub MAIN at /home/evb/.perl6/sources/C360CEB3AF792C33F65155FA82FDB7AB4467EC82 (Zef::CLI) line 152
in block <unit> at bin/zef line 3
locate libreadline.so gives the following output:
/lib/x86_64-linux-gnu/libreadline.so.5
/lib/x86_64-linux-gnu/libreadline.so.5.2
/lib/x86_64-linux-gnu/libreadline.so.6
/lib/x86_64-linux-gnu/libreadline.so.6.3
Many distributions, including debian/ubuntu and friends encourage a certain separation between packaging, more information in the debian.org packaging docs.
In particular, they encourage distribution of shared libraries for certain versions (such as .so.1) that are dependencies of other packages separate from the 'unversioned' .so that are more typically used for 'development' (in distribution packages ending in -dev).
From the above docs:
Please note that the development package should contain a symlink for the associated shared library without a version number. E.g.:
/usr/lib/x86_64-linux-gnu/libfoo.so -> libfoo.so.1
For readline, that link is in the libreadline-dev package, which can be installed on mint/ubuntu/debian type systems like this: sudo apt-get install libreadline-dev
Perl 6 NativeCall docs discuss this too:
If you write native('foo') NativeCall will search libfoo.so under Unix like system (libfoo.dynlib on OS X, foo.dll on win32). In most modern system it will require you or the user of your module to install the development package because it's recommended to always provide an API/ABI version to a shared library, so libfoo.so ends often being a symbolic link provided only by a development package.
To avoid that, the native trait allows you to specify the API/ABI version. It can be a full version or just a part of it. (Try to stick to Major version, some BSD code does not care for Minor.)
It looks like Readline does not specify a specific API/ABI version. (perhaps it should?)
Since it does not, it will look for the unversioned shared library (plain .so).