[MacPorts] #32982: libtool-2.4.2: patch to allow -stdlib=* as linker flags

[MacPorts]

#32982: libtool-2.4.2: patch to allow -stdlib=* as linker flags
--------------------------------+-------------------------------------------
 Reporter:  titus@…             |       Owner:  ram@…           
     Type:  enhancement         |      Status:  assigned        
 Priority:  Normal              |   Milestone:                  
Component:  ports               |     Version:  2.0.3           
 Keywords:                      |        Port:  libtool         
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Comment(by titus@…):

 It's simply that libtool filters linker options that are unknown to it.

 It refuses to pass -stdlib=libc++ to clang++ as the linker.
 No macport uses this up to now, but it's necessary for my software.
 I've just sent some general questions about that to the mailing list.

 A simple test is to try to compile cppunit with libc++:

 {{{
 tar xzf /opt/local/var/macports/distfiles/cppunit/cppunit-1.12.1.tar.gz
 cd cppunit-1.12.1
 autoreconf -fvi
 export CC=clang
 export CXX=clang++
 export CXXFLAGS=-libstdc++
 export LDFLAGS=-libstdc++
 ./configure
 make
 }}}

 This fails during linking the dylib because for compilation libc++ header
 files get used,
 but for linking the flag is dropped by libtool, so clang++ tries to link
 to libstdc++,
 which of course has to fail.

 After modifying libtool with the patch, and executing "autoreconf -fvi"
 before
 ./configuring cppunit, the dylib linking step is ok.


 I don't know why the mail to gnu.org does not show up.

 Is it a moderated list? Do I have to subscribe to something?
 Did you successfully post to this address?

 My server says

 {{{
 Jan 22 13:30:40 postfix/smtp[37774]: D8B951C583E1: to=<bug-
 libtool at gnu.org>, relay=eggs.gnu.org[140.186.70.92]:25, status=sent (250
 OK id=1RowZE-000499-DT)
 }}}

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Ticket URL: <https://trac.macports.org/ticket/32982#comment:3>
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