[MacPorts] #57544: zstd @1.3.4: fails to compile for i386 on 10.6

[MacPorts]

#57544: zstd @1.3.4: fails to compile for i386 on 10.6
------------------------+------------------------
  Reporter:  LetterRip  |      Owner:  seanfarley
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.5.4
Resolution:             |   Keywords:
      Port:  zstd       |
------------------------+------------------------

Comment (by kencu):

 On 10.6.8, `clang-3.4` got past the inline assembly, but wouldn't build it
 `+universal`
 {{{
 make[1]: Leaving directory
 `/opt/local/var/macports/build/_opt_SnowLeopardPorts_archivers_zstd/zstd/work/zstd-1.3.4/contrib/gen_html'
 make[1]: Entering directory
 `/opt/local/var/macports/build/_opt_SnowLeopardPorts_archivers_zstd/zstd/work/zstd-1.3.4/lib'
 make[1]: Nothing to be done for `lib'.
 make[1]: Leaving directory
 `/opt/local/var/macports/build/_opt_SnowLeopardPorts_archivers_zstd/zstd/work/zstd-1.3.4/lib'
 /usr/bin/make -C contrib/pzstd all
 make[1]: Entering directory
 `/opt/local/var/macports/build/_opt_SnowLeopardPorts_archivers_zstd/zstd/work/zstd-1.3.4/contrib/pzstd'
 /opt/local/bin/clang++-mp-3.4 -arch x86_64 -arch i386
 -D__STDC_FORMAT_MACROS -MMD -MP -MF main.Td   -I../../lib
 -I../../lib/common -I../../programs -I. -DNDEBUG -O3 -Wall -Wextra
 -pedantic  -std=c++11 -c main.cpp  -o main.o
 In file included from main.cpp:9:
 ./ErrorHolder.h:11:10: fatal error: 'atomic' file not found
 #include <atomic>
          ^
 1 error generated.
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/57544#comment:3>
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