[MacPorts] #52817: clang-3.8.1_6 on El Capitan: #error architecture not supported

[MacPorts]

#52817: clang-3.8.1_6 on El Capitan: #error architecture not supported
--------------------------------------+--------------------------------
 Reporter:  gnw3                      |      Owner:  macports-tickets@…
     Type:  defect                    |     Status:  new
 Priority:  Normal                    |  Milestone:
Component:  ports                     |    Version:  2.3.4
 Keywords:  unsupported architecture  |       Port:  clang-38
--------------------------------------+--------------------------------
 {{{port -s upgrade clang-3.8}}} fails. Relevant lines in {{{main.log}}}:

 {{{
 [  4%] Building C object projects/compiler-
 rt/lib/builtins/CMakeFiles/clang_rt.b
 uiltins_arm64_osx.dir/comparetf2.c.o
 cd
 /opt/local/var/macports/build/_opt_local_var_macports_sources_github.com_macp
 orts_macports-ports_lang_llvm-3.8/clang-3.8/work/build/projects/compiler-
 rt/lib/
 builtins &&
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.x
 ctoolchain/usr/bin/clang  -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS
 -D__ST
 DC_LIMIT_MACROS
 -I/opt/local/var/macports/build/_opt_local_var_macports_sources_
 github.com_macports_macports-
 ports_lang_llvm-3.8/clang-3.8/work/build/projects/c
 ompiler-rt/lib/builtins
 -I/opt/local/var/macports/build/_opt_local_var_macports_
 sources_github.com_macports_macports-
 ports_lang_llvm-3.8/clang-3.8/work/llvm-3.8
 .1.src/projects/compiler-rt/lib/builtins
 -I/opt/local/var/macports/build/_opt_lo
 cal_var_macports_sources_github.com_macports_macports-
 ports_lang_llvm-3.8/clang-
 3.8/work/build/include
 -I/opt/local/var/macports/build/_opt_local_var_macports_s
 ources_github.com_macports_macports-
 ports_lang_llvm-3.8/clang-3.8/work/llvm-3.8.
 1.src/include  -DNDEBUG -arch arm64    -isysroot
 /Applications/Xcode.app/Content
 s/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk
 -mmacosx-ve
 rsion-min=10.5 -fPIC -O3 -fvisibility=hidden -DVISIBILITY_HIDDEN -Wall
 -fomit-fr
 ame-pointer -arch arm64 -o
 CMakeFiles/clang_rt.builtins_arm64_osx.dir/comparetf2
 .c.o   -c
 /opt/local/var/macports/build/_opt_local_var_macports_sources_github.c
 om_macports_macports-
 ports_lang_llvm-3.8/clang-3.8/work/llvm-3.8.1.src/projects/
 compiler-rt/lib/builtins/comparetf2.c
 In file included from
 /opt/local/var/macports/build/_opt_local_var_macports_sour
 ces_github.com_macports_macports-
 ports_lang_llvm-3.8/clang-3.8/work/llvm-3.8.1.s
 rc/projects/compiler-rt/lib/builtins/comparetf2.c:41:
 In file included from
 /opt/local/var/macports/build/_opt_local_var_macports_sour
 ces_github.com_macports_macports-
 ports_lang_llvm-3.8/clang-3.8/work/llvm-3.8.1.s
 rc/projects/compiler-rt/lib/builtins/fp_lib.h:24:
 In file included from
 /Applications/Xcode.app/Contents/Developer/Toolchains/Xcod
 eDefault.xctoolchain/usr/bin/../lib/clang/7.3.0/include/stdint.h:63:
 In file included from
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOS
 X.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/stdint.h:52:
 In file included from
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOS
 X.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/sys/_types.h:32:
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/sys/cdefs.h:707:2:
 error: Unsupported architecture
 #error Unsupported architecture
  ^
 }}}

--
Ticket URL: <https://trac.macports.org/ticket/52817>
MacPorts <https://www.macports.org/>
Ports system for macOS