[MacPorts] #63072: py39-numpy @1.20.3_0+gcc11+openblas fails to build on aarch64

[MacPorts]

#63072: py39-numpy @1.20.3_0+gcc11+openblas fails to build on aarch64
-----------------------------+-----------------------
  Reporter:  thermalecology  |      Owner:  michaelld
      Type:  defect          |     Status:  reopened
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.7.1
Resolution:                  |   Keywords:  arm64
      Port:  py-numpy        |
-----------------------------+-----------------------

Comment (by kencu):

 gcc is supposed to predefine FLT_EVAL_METHOD to some value. eg from brew's
 gcc11 on Intel, we see:
 {{{
 % gcc-11 -dM -E - < /dev/null | grep FLT_EVAL
 #define __FLT_EVAL_METHOD__ 0
 }}}

 Apple's math.h accepts a few values:
 {{{
 */
 #if __FLT_EVAL_METHOD__ == 0
         typedef float float_t;
         typedef double double_t;
 #elif __FLT_EVAL_METHOD__ == 1
         typedef double float_t;
         typedef double double_t;
 #elif __FLT_EVAL_METHOD__ == 2 || __FLT_EVAL_METHOD__ == -1
         typedef long double float_t;
         typedef long double double_t;
 #else /* __FLT_EVAL_METHOD__ */
         #error "Unsupported value of __FLT_EVAL_METHOD__."
 #endif /* __FLT_EVAL_METHOD__ */

 }}}

 so -- what does your gcc-mp-11 compiler show?

 {{{
 gcc-mp-11 -dM -E - < /dev/null | grep FLT_EVAL_METHOD
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/63072#comment:10>
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