Bugs item #1812600, was opened at 2007-10-13 01:01
Message generated for change (Comment added) made by bagder
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Category: libcurl
Group: wrong behaviour
>Status: Closed
>Resolution: Later
Priority: 5
Private: No
Submitted By: Juergen (juedau)
Assigned to: Daniel Stenberg (bagder)
Summary: curl-config --libs doesn't show required libraries

Initial Comment:
Curl configured with --enable-shared and build with openssl support doesn't list the required libraries.

The bug is in configure.ac line 197 which is:

 if test "X$enable_shared" = "Xyes" -a "X$link_all_deplibs" = "Xno
 then
     REQUIRE_LIB_DEPS=no
 else
     REQUIRE_LIB_DEPS=yes
 fi

IF we build a shared lib and do not link all deplibs, than REQUIRE_LIB_DEPS should be yes.

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>Comment By: Daniel Stenberg (bagder)
Date: 2007-10-22 11:03

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ok, so I consider this report to be known_bugs #31 and I close it now

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Comment By: Juergen (juedau)
Date: 2007-10-18 20:06

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Yep, libcurl was build with both types of libraries. Using pkg-config
works fine, so I can use that instead. Thanks !

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Comment By: Dan Fandrich (dfandrich)
Date: 2007-10-18 19:37

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Did you build your libcurl with --enable-shared (the default)? curl-config
has the limitation of being valid for only one library type at a
time--shared or static. If you build both, it defaults to giving you the
proper values for a shared library. This limitation is KNOWN_BUG #31.

To get around it, you can use pkg-config instead of curl-config. The
former supports both configurations simultaneously, e.g. pkg-config
--static --libs libcurl

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Comment By: Juergen (juedau)
Date: 2007-10-18 18:58

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The problem is that I try to link a static binary, see attached
config.log. In that case I need to know
all libs libcurl.a depends on. Btw, other libraries, e.g. gtk, imlib, are
listing all dependencies.

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Comment By: Dan Fandrich (dfandrich)
Date: 2007-10-18 18:29

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On many system, -lcurl is all you need to link an app with curl. Linking
against more libraries than that builds a false set of dependencies into
the app--they're not needed by the app itself, only by libcurl. Do you see
an error when you link your app with curl-config --libs right now? If so,
is you app using one of those libraries itself?

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Comment By: Juergen (juedau)
Date: 2007-10-13 09:45

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$:> curl-config --libs
-lcurl

IMO this should be something like:
-lcurl -lssl -lcrypto -ldl -lz

I recognized this issue while trying to compile darcs, config.log
attached.

Until 7.16.2 curl-config's output is what I expect.

File Added: config.log

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Comment By: Dan Fandrich (dfandrich)
Date: 2007-10-13 01:23

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Both enable_shared and link_all_deplibs are set by libtool, and the logic
of the above lines looks correct to me. What is the output of curl-config
--libs in your case? What do you expect it to be? And what error do you
see when you link your app with curl-config --libs right now?

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Received on 2007-10-22