[MacPorts] #61197: R @4.0.2: configure hangs under trace mode

[MacPorts]

#61197: R @4.0.2: configure hangs under trace mode
--------------------------+----------------------
 Reporter:  chrstphrchvz  |      Owner:  kjellpk
     Type:  defect        |     Status:  assigned
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.6.3
 Keywords:  tracemode     |       Port:  R
--------------------------+----------------------
 I observe that on macOS 10.15, running `port -vst configure R` hangs
 indefinitely (0% CPU usage) after these steps:
 {{{
 checking whether the ccache /usr/bin/clang++ linker
 (/Library/Developer/CommandLineTools/usr/bin/ld) supports shared
 libraries... yes
 checking dynamic linker characteristics... darwin19.6.0 dyld
 checking how to hardcode library paths into programs... immediate
 }}}

 Without trace mode, it proceeds immediately:
 {{{
 checking whether the ccache /usr/bin/clang++ linker
 (/Library/Developer/CommandLineTools/usr/bin/ld) supports shared
 libraries... yes
 checking dynamic linker characteristics... darwin19.6.0 dyld
 checking how to hardcode library paths into programs... immediate
 checking if libtool supports shared libraries... yes
 checking whether to build shared libraries... yes
 checking whether to build static libraries... no
 checking for /opt/local/bin/gfortran-mp-10 option to produce PIC... -fno-
 common
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/61197>
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