在 Linux 中，運行make test命令時安裝 perl 失敗
t/op/exec ...................................................... # Failed test 17 - at op/exec.t line 114
# $! eq 40, 'Too many levels of symbolic links'
FAILED at test 17
錯誤未指示失敗的符號鏈接。
遵循的步驟：
- Download perl archive from https://www.cpan.org/src/
- [user@hostname perl-5.28.3]$ tar -xvzf perl-5.28.3.tar.gz
- [user@hostname perl-5.28.3]$ cd perl-5.28.3
- [user@hostname perl-5.28.3]$ ./Configure -des -Dinstallprefix=<installation directory>
- [user@hostname perl-5.28.3]$ make
- [user@hostname perl-5.28.3]$ make test
Failed 2 tests out of 2464, 99.92% okay.
../cpan/Time-Local/t/Local.t
op/exec.t
Elapsed: 1317 sec
u=12.87 s=34.02 cu=548.85 cs=488.76 scripts=2464 tests=1158447
make: *** [test] Error 1
[user@hostname perl-5.28.3]$ t/TEST op/exec.t
t/op/exec ... # Failed test 17 - at op/exec.t line 114
# $! eq 40, 'Too many levels of symbolic links'
FAILED at test 17
Failed 1 test out of 1, 0.00% okay.
op/exec.t
已驗證其他 perl 版本也發生了相同的行為，這表明我的安裝環境存在一些問題。
任何指標都會有所幫助。
uj5u.com熱心網友回復：
感謝您的指標@choroba。
以下是根本原因。
在<perl-5.28.3>/t/op/exec.t檔案中，我們在第 114 行附近找到以下內容：
$rc = system { "lskdfj" } "lskdfj";
unless( ok($rc == 255 << 8 or $rc == -1 or $rc == 256 or $rc == 512) ) {
print "# \$rc == $rc\n";
}
unless ( ok( $! == 2 or $! =~ /\bno\b.*\bfile/i or
$! == 13 or $! =~ /permission denied/i or
$! == 22 or $! =~ /invalid argument/i ) ) {
diag sprintf "\$! eq %d, '%s'\n", $!, $!;
}
在我的環境 PATH 環境變數值是
[user@hostname perl-5.28.3]$ echo $PATH
/bin:/usr/lib64/qt-3.3/bin:/bin:/usr/bin:/usr/dev_infra/platform/bin:/usr/dev_infra/generic/bin:/usr/local/bin:/usr/local/ade/bin
在此 PATH 中，對于以下路徑，ls 嘗試拋出錯誤“符號鏈接級別太多”
[user@hostname perl-5.28.3]$ ls -i /usr/local/bin /usr/local/ade/bin
ls: cannot access /usr/local/bin: Too many levels of symbolic links
ls: cannot access /usr/local/ade/bin: Too many levels of symbolic links
[user@hostname perl-5.28.3]$ ls -ltr /usr/local
lrwxrwxrwx. 1 root root 20 Mar 30 2017 bin -> ./packages/local/bin
lrwxrwxrwx. 1 root root 18 Mar 30 2017 ade -> /usr/local/nde/ade
從 PATH 中洗掉違規路徑后，make test 運行成功
[user@hostname perl-5.28.3]$ export PATH=/bin:/usr/lib64/qt-3.3/bin:/bin:/usr/bin:/usr/dev_infra/platform/bin:/usr/dev_infra/generic/bin
[user@hostname perl-5.28.3]$ make test
All tests successful.
Elapsed: 1611 sec
u=14.47 s=44.63 cu=731.82 cs=575.84 scripts=2474 tests=1209537
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