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Bug #81276 Using curl/libcurl with NSS backend fails to load curl extension
Submitted: 2021-07-21 00:06 UTC Modified: 2021-07-23 15:30 UTC
From: 1001malac at gmail dot com Assigned:
Status: Open Package: cURL related
PHP Version: 7.4.21 OS: Debian 10.10
Private report: No CVE-ID: None
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 [2021-07-21 00:06 UTC] 1001malac at gmail dot com

I'm using cURL 7.64.0 with the NSS SSL backend, instead of OpenSSL. The problem I'm facing is php complains whenever it has to load the curl extension:

PHP Warning:  PHP Startup: Unable to load dynamic library '' (tried: /usr/lib/php/20190902/ (/lib/x86_64-linux-gnu/ version `CURL_OPENSSL_4' not found (required by /usr/lib/php/20190902/, /usr/lib/php/20190902/ (/usr/lib/php/20190902/ cannot open shared object file: No such file or directory)) in Unknown on line 0

Is there any way to use php's curl extension without openssl dependencies baked in? Maybe selecting the SSL backend somehow as detailed in the following link?


# curl --version
curl 7.64.0 (x86_64-pc-linux-gnu) libcurl/7.64.0 NSS/3.42.1 zlib/1.2.11 brotli/1.0.7 libidn2/2.0.5 libpsl/0.20.2 (+libidn2/2.0.5) nghttp2/1.36.0
Release-Date: 2019-02-06
Protocols: file ftp ftps http https 
Features: AsynchDNS IDN IPv6 Largefile NTLM SSL libz brotli HTTP2 UnixSockets HTTPS-proxy PSL 


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 [2021-07-21 11:54 UTC]
Can you please run ldd /usr/bin/curl to confirm that you curl binary is linked against the same

The error message looks like your is borked. PHP doesn't particularly care whether your curl is linked against openssl, gnutls or nss. (We only specially handle using an old openssl version, but that should fail in a different way.)
 [2021-07-22 23:34 UTC] 1001malac at gmail dot com
Here you go: (0x00007ffd799e2000) => /lib/x86_64-linux-gnu/ (0x00007f678a924000) => /lib/x86_64-linux-gnu/ (0x00007f678a90a000) => /lib/x86_64-linux-gnu/ (0x00007f678a900000) => /lib/x86_64-linux-gnu/ (0x00007f678a77d000) => /lib/x86_64-linux-gnu/ (0x00007f678a778000) => /lib/x86_64-linux-gnu/ (0x00007f678a5cd000) => /lib/x86_64-linux-gnu/ (0x00007f678a539000) => /lib/x86_64-linux-gnu/ (0x00007f678a250000) => /lib/x86_64-linux-gnu/ (0x00007f678a1cb000) => /lib/x86_64-linux-gnu/ (0x00007f6789fad000) => /lib/x86_64-linux-gnu/ (0x00007f6789f56000) => /lib/x86_64-linux-gnu/ (0x00007f6789d95000) => /lib/x86_64-linux-gnu/ (0x00007f6789d72000)
	/lib64/ (0x00007f678adda000) => /lib/x86_64-linux-gnu/ (0x00007f6789a97000) => /lib/x86_64-linux-gnu/ (0x00007f67898c8000) => /lib/x86_64-linux-gnu/ (0x00007f6787ed8000) => /lib/x86_64-linux-gnu/ (0x00007f6787eb0000) => /lib/x86_64-linux-gnu/ (0x00007f6787d2a000) => /lib/x86_64-linux-gnu/ (0x00007f6787d10000)
 [2021-07-22 23:35 UTC] 1001malac at gmail dot com
Well, forget the previous one, this is it: (0x00007fff701f9000) => /lib/x86_64-linux-gnu/ (0x00007fb7049b2000) => /lib/x86_64-linux-gnu/ (0x00007fb7049ad000) => /lib/x86_64-linux-gnu/ (0x00007fb70496c000) => /lib/x86_64-linux-gnu/ (0x00007fb70474e000) => /lib/x86_64-linux-gnu/ (0x00007fb70472d000) => /lib/x86_64-linux-gnu/ (0x00007fb70456c000) => /lib/x86_64-linux-gnu/ (0x00007fb704542000) => /lib/x86_64-linux-gnu/ (0x00007fb704523000) => /lib/x86_64-linux-gnu/ (0x00007fb704510000) => /lib/x86_64-linux-gnu/ (0x00007fb7043c2000) => /lib/x86_64-linux-gnu/ (0x00007fb704390000) => /lib/x86_64-linux-gnu/ (0x00007fb704361000) => /lib/x86_64-linux-gnu/ (0x00007fb704306000) => /lib/x86_64-linux-gnu/ (0x00007fb7042ff000) => /lib/x86_64-linux-gnu/ (0x00007fb7042f0000) => /lib/x86_64-linux-gnu/ (0x00007fb7042eb000) => /lib/x86_64-linux-gnu/ (0x00007fb7042e1000)
	/lib64/ (0x00007fb704a65000) => /lib/x86_64-linux-gnu/ (0x00007fb70415b000) => /lib/x86_64-linux-gnu/ (0x00007fb703fd8000) => /lib/x86_64-linux-gnu/ (0x00007fb703fb5000)
 [2021-07-23 06:05 UTC]
Did you build PHP yourself, or are you using a pre-built PHP from
your distro/PPA?
 [2021-07-23 15:30 UTC] 1001malac at gmail dot com
I'm running under Debian 10. 

apt-get source curl
modified the rules to my liking, removed slack, compile with debuild, install.

Only curl got recompiled. I've tried 7.3 as it's the version provided with the distro, then also tried with the semi official Sury's php 7.4 packages and it's the same.
 [2022-04-22 10:51 UTC] arunsharmaji982 at gmail dot com
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