[MacPorts] #61971: dar @2.6.13_0 fails to build on macOS 11 (Big Sur) "ld: symbol(s) not found for architecture x86_64"

[MacPorts]

#61971: dar @2.6.13_0 fails to build on macOS 11 (Big Sur) "ld: symbol(s) not found
for architecture x86_64"
----------------------+--------------------
 Reporter:  jgosmann  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:            |       Port:  dar
----------------------+--------------------
 The command {{{sudo port install dar}}} fails with the following output:

 {{{
 --->  Computing dependencies for dar
 --->  Fetching archive for dar
 --->  Attempting to fetch dar-2.6.13_0.darwin_20.x86_64.tbz2 from
 https://packages.macports.org/dar
 --->  Attempting to fetch dar-2.6.13_0.darwin_20.x86_64.tbz2 from
 https://lil.fr.packages.macports.org/dar
 --->  Attempting to fetch dar-2.6.13_0.darwin_20.x86_64.tbz2 from
 https://mse.uk.packages.macports.org/dar
 --->  Fetching distfiles for dar
 --->  Verifying checksums for dar
 --->  Extracting dar
 --->  Configuring dar
 --->  Building dar
 Error: Failed to build dar: command execution failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_archivers_dar/dar/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 Error: Processing of port dar failed
 }}}

 A snippet of the error output from the log (full log attached):

 {{{
 :info:build libtool: link: /usr/bin/clang++ -dynamiclib  -o
 .libs/libdar64.6000.dylib [...]
 :info:build Undefined symbols for architecture x86_64:
 :info:build   "_curl_easy_cleanup", referenced from:
 :info:build
 libdar::mycurl_easyhandle_node::~mycurl_easyhandle_node() in
 mycurl_easyhandle_sharing.o
 :info:build
 libdar::mycurl_easyhandle_node::~mycurl_easyhandle_node() in
 mycurl_shared_handle.o
 :info:build   "_curl_easy_duphandle", referenced from:
 :info:build
 libdar::mycurl_easyhandle_node::mycurl_easyhandle_node(libdar::mycurl_easyhandle_node
 const&) in mycurl_easyhandle_node.o
 ...
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/61971>
MacPorts <https://www.macports.org/>
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