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Question about the ldd output
- From: "Lavrentiev, Anton (NIH/NLM/NCBI) [C] via cygwin" <cygwin at cygwin dot com>
- To: "'cygwin at cygwin dot com'" <cygwin at cygwin dot com>
- Date: Fri, 5 Jul 2019 18:28:20 +0000
- Subject: Question about the ldd output
- Ironport-sdr: KsALCUyeim7ury4CUFHBDXZkX7aCSicHhEdYZFEpIYBXN/Xg0xTcgaZS7Sa9v0egwEAtnd7vu2 koJINYAk1SSw==
- Reply-to: "Lavrentiev, Anton (NIH/NLM/NCBI) [C]" <lavr at ncbi dot nlm dot nih dot gov>
Hi all,
Here's the output from ldd, of an executable built just recently on Cygwin:
ntdll.dll => /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll (0x7ffc339d0000)
KERNEL32.DLL => /cygdrive/c/WINDOWS/System32/KERNEL32.DLL (0x7ffc31a00000)
KERNELBASE.dll => /cygdrive/c/WINDOWS/System32/KERNELBASE.dll (0x7ffc30090000)
cygwin1.dll => /cygdrive/u/2.4.0/release/Cygwin-64/bin/cygwin1.dll (0x180040000)
cygiconv-2.dll => /usr/bin/cygiconv-2.dll (0x3ec980000)
cygcom_err-2.dll => /usr/bin/cygcom_err-2.dll (0x3ef750000)
cygbz2-1.dll => /usr/bin/cygbz2-1.dll (0x3f6a40000)
cyggcc_s-seh-1.dll => /usr/bin/cyggcc_s-seh-1.dll (0x3ee3a0000)
cyggssapi_krb5-2.dll => /usr/bin/cyggssapi_krb5-2.dll (0x3eceb0000)
cygz.dll => /cygdrive/u/2.4.0/release/Cygwin-64/bin/cygz.dll (0x3aba30000)
cygpcre-1.dll => /usr/bin/cygpcre-1.dll (0x3eb1a0000)
cygk5crypto-3.dll => /usr/bin/cygk5crypto-3.dll (0x3ec300000)
cygintl-8.dll => /usr/bin/cygintl-8.dll (0x3ec8d0000)
cygkrb5support-0.dll => /usr/bin/cygkrb5support-0.dll (0x3ec150000)
??? => ??? (0x90000)
My question would be, how to read the last line? It'd be quite suspicious if ldd is unable to figure out what library (name) is required
(the left side of the =>), but I understand that the library itself might be missing (so it's logical to put "???" on the right side in that case).
Any insight is appreciated.
Thanks,
Anton
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