Bug 488895 - libcurl depends on libssh2
libcurl depends on libssh2
Product: Fedora
Classification: Fedora
Component: curl (Show other bugs)
x86_64 Linux
low Severity medium
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Assigned To: Jindrich Novy
Fedora Extras Quality Assurance
Depends On:
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Reported: 2009-03-05 23:42 EST by Pete Zaitcev
Modified: 2013-07-02 19:35 EDT (History)
3 users (show)

See Also:
Fixed In Version: 7.19.4-2.fc10
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2009-03-09 18:44:07 EDT
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Regression: ---
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Verified Versions:
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Pete Zaitcev 2009-03-05 23:42:49 EST
Description of problem:

An application that requires libcurl cannot configure itself because
of link error against a symbol libssh2_something... Installing libssh2-devel
solves the issue. I think "yum install libcurl-devel" should pull
libssh2-devel as well.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Make sure that libssh2-devel is not installed
2. yum install libcurl-devel
3. Find an application that uses libcurl
4. If application is configured with autotools, at ./confgure step
   the libcurl detection will say:
    checking whether libcurl is usable ... no
Actual results:

libcurl-devel can be installed, but not useable

Expected results:

RPM requires should refer libssh2-devel

Additional info:

This is a bit confusing to me, because I don't understand if BuildRequires
is necessary or Requires, but for -devel package.

The autoconf files of the application cannot do anything because they
cannot know if a specific implementation of libcurl needs libssh2, I think.
Comment 1 Kamil Dudka 2009-03-06 01:42:35 EST
At first glance I can't see any dependency of libcurl headers on libssh2 headers. Which application are you building? Could you please attach the failing autoconf test?
Comment 2 Jindrich Novy 2009-03-06 09:04:08 EST
Pete, please attach the config.log to let us have a look what happenned.

I added the libssh2-devel dependency to libcurl-devel so it should be fixed. But I'm curious what failed as well.
Comment 3 Fedora Update System 2009-03-06 09:31:04 EST
curl-7.19.4-2.fc10 has been submitted as an update for Fedora 10.
Comment 4 Fedora Update System 2009-03-06 09:33:42 EST
curl-7.19.4-2.fc9 has been submitted as an update for Fedora 9.
Comment 5 Pete Zaitcev 2009-03-06 11:25:27 EST
I removed libssh2-devel and found that I cannot reproduce the problem.
The libssh2 cannot be removed because there's a (necessary) dependency.

So, I looked at the logs. The /var/log/yum says:
Mar 05 08:47:57 Installed: libevent-devel-1.4.5-2.fc11.x86_64
Mar 05 08:48:19 Installed: db4-devel-4.7.25-11.fc11.x86_64
Mar 05 12:59:00 Updated: libcurl-7.19.4-1.fc11.x86_64
Mar 05 12:59:01 Updated: libcurl-7.19.4-1.fc11.i586
Mar 05 12:59:04 Installed: libcurl-devel-7.19.4-1.fc11.x86_64
Mar 05 14:39:41 Updated: libssh2-1.0-2.fc11.x86_64
Mar 05 14:39:41 Updated: libssh2-1.0-2.fc11.i586
Mar 05 14:39:42 Installed: libssh2-devel-1.0-2.fc11.x86_64
Mar 05 14:43:28 Updated: pcre-7.8-2.fc11.x86_64
Mar 05 14:43:30 Installed: pcre-devel-7.8-2.fc11.x86_64

The gap between 1 p.m and 2:40 p.m. is when I tried to figure why
libcurl was unusable. I'm not used to understanding config.log, and
the failure was quite a bit up from the tail end.

IIRC the link failed because of libssh2_session_block_directions.

I think the following actually happened:
The libcurl-7.19.4-1.fc11 that I installed as a dependency for libcurl-devel
needed a new libssh2, but did not require the right release. So, when linked
against previously installed libssh2-0.18-8.fc11 it failed. Then, when
I installed libssh2-devel, yum updated libss2 to libssh2-1.0-2.fc11.

Like Kamil said, libssh2-devel is not necessary to build applications
with librucl (but libssh2 is necessary to run them). So what I made
Jindrich to do was incorrect. The correct fix would be for libcurl
to require libssh2 >= 1.0, I suspect now. Currently, the dependency
is automatic without a version:

[root@niphredil zaitcev]# rpm -q --requires libcurl  | grep ssh
[root@niphredil zaitcev]#
Comment 6 Kamil Dudka 2009-03-07 14:18:43 EST
Yes, it makes sense. Thank you for investigating this! Please what's the application you tried to build? We need to verify that problem is really gone after fixing this correctly.
Comment 7 Pete Zaitcev 2009-03-07 14:31:47 EST
Don't worry about setting it up to run, that may be convoluted.
Also, I don't have a spec file yet. But the build should be just
sh autogen.sh and then ./configure && make.
Comment 8 Fedora Update System 2009-03-09 18:43:58 EDT
curl-7.19.4-2.fc9 has been pushed to the Fedora 9 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 Fedora Update System 2009-03-09 18:47:43 EDT
curl-7.19.4-2.fc10 has been pushed to the Fedora 10 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 10 Kamil Dudka 2009-03-10 07:59:40 EDT
I've tested it on F-10 and it works for me with libssh2-0.18-7.fc9.x86_64 and without libssh2-devel:

# rpm -q libssh2 libssh2-devel libcurl libcurl-devel
package libssh2-devel is not installed

checking for curl-config... /usr/bin/curl-config
checking for the version of libcurl... 7.19.4
checking for libcurl >= version 7.10.1... yes
checking whether libcurl is usable... yes
checking for curl_free... yes

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