[MacPorts] #65503: libgcc12: libgcc_s.1.dylib is missing its @rpath entry

[MacPorts]

#65503: libgcc12: libgcc_s.1.dylib is missing its @rpath entry
--------------------------+----------------------
 Reporter:  cjones051073  |      Owner:  (none)
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:
 Keywords:                |       Port:  libgcc12
--------------------------+----------------------
 Leads to issues such as one recently posted on the user list, where
 following the update all previously OK binaries where failing to run with

 {{{
 dyld: Library not loaded: @rpath/libgcc_s.1.1.dylib
 Referenced from: /opt/local/lib/libgcc/libgcc_s.1.dylib
 Reason: image not found
 Trace/BPT trap
 }}}

 Recompiling the code fixed things, but what I think is odd is the fact
 /opt/local/lib/libgcc/libgcc_s.1.dylib does not have an RPATH entry

 {{{
 Oberon /opt/local/lib/libgcc > otool -l libgcc_s.1.1.dylib | grep -A 3
 RPATH
 Oberon /opt/local/lib/libgcc >
 }}}

 compared to other dylib in libgcc12

 {{{
 /opt/local/lib/libgcc > otool -l libgfortran.5.dylib | grep -A 3 RPATH
           cmd LC_RPATH
       cmdsize 32
          path @loader_path/ (offset 12)
 Load command 16
           cmd LC_RPATH
       cmdsize 40
          path /opt/local/lib/libgcc (offset 12)
 Load command 17
           cmd LC_RPATH
       cmdsize 32
          path @loader_path (offset 12)
 Load command 18
           cmd LC_RPATH
       cmdsize 120
          path
 /opt/local/var/macports/build/_Users_chris_Projects_MacPorts_ports_lang_gcc12/libgcc12/work/build/gcc
 (offset 12)
 Load command 19
           cmd LC_RPATH
       cmdsize 32
          path /opt/local/lib (offset 12)
 }}}

 In particular, given we build gcc with the option

 {{{
  --with-darwin-extra-rpath=${prefix}/lib/libgcc
 }}}

 I would at least expect to see that there ?

 Ken - thoughts ? Can you check with Iain as to if this is a bug or not ?

-- 
Ticket URL: <https://trac.macports.org/ticket/65503>
MacPorts <https://www.macports.org/>
Ports system for macOS