[MacPorts] #70859: GMP build with GCC, not Clang

[MacPorts]

#70859: GMP build with GCC, not Clang
-----------------------+---------------------
  Reporter:  haberg-1  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  ventura
      Port:  gmp       |
-----------------------+---------------------

Comment (by kencu):

 you can force an arm64 Mac into Intel mode like this:

 {{{
 gmp-6.3.0 % arch -arch x86_64 zsh
 }}}

 and from then on, the system thinks it's running on an Intel processor:

 {{{
 % ./configure  --enable-cxx  && make -j 10
 checking build system type... westmere-apple-darwin24.0.0
 checking host system type... westmere-apple-darwin24.0.0
 checking for a BSD-compatible install... /usr/bin/install -c
 ...
 }}}

 as per the ticket, there are certainly plenty of errors with the x86_64
 build. This was the last bit that printed:

 {{{
 ============================================================================
 Testsuite summary for GNU MP 6.3.0
 ============================================================================
 # TOTAL: 53
 # PASS:  20
 # SKIP:  1
 # XFAIL: 0
 # FAIL:  32
 # XPASS: 0
 # ERROR: 0
 ============================================================================
 See tests/mpn/test-suite.log
 }}}

 disabling assembly on Intel fixes all of the errors (this was suggested by
 a gmp developer but I don't see that anyone ever tested it):

 {{{
 % ./configure  --enable-cxx  --disable-assembly && make -j 10
 }}}

 {{{
 ============================================================================
 Testsuite summary for GNU MP 6.3.0
 ============================================================================
 # TOTAL: 22
 # PASS:  22
 # SKIP:  0
 # XFAIL: 0
 # FAIL:  0
 # XPASS: 0
 # ERROR: 0
 }}}

 So the error is in the way the handwritten gmp assembly files are being
 handled / compiled by clang. I suspect it is related to the ALIGN(8)
 above, so I'll see if changing that makes any difference. Here, we might
 be in tricky territory, however.

 I haven't tried a gcc build as yet.

-- 
Ticket URL: <https://trac.macports.org/ticket/70859#comment:3>
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