[Bug 211808] graphics/opencv-core: c++ compiler error due to "fatal error: 'stddef.h' file not found"

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=211808

Jan Beich (mail not working) <jbeich at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jbeich at FreeBSD.org

--- Comment #5 from Jan Beich (mail not working) <jbeich at FreeBSD.org> ---
-O3 -march=native is safe to use sans occasional crashes on less supported
platforms. |make delete-old| is mandatory for source upgrades e.g.,
/usr/include/utmp.h was known to break utmpx.h support in the past.

Can you provide verbose build log? Or just do the homework of reproducing
within poudriere jail.

(In reply to ohartman from comment #3)
> CPUTYPE?=               native,

"native" requires adjusting MACHINE_CPU manually, or some ports may exclude
SSE4 or AVX support e.g.,

  # Skylake
  MACHINE_CPU += avx2 avx sse42 sse41 ssse3 sse3 # popcnt fma3
  .if ${MACHINE_CPUARCH} == i386
  MACHINE_CPU += sse2 sse i686 mmx i586 i486
  .endif

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