> On 20 Oct 2021, at 18:59, Carlo Cabrera <carlo.cabr...@me.com> wrote:
>
> The configure script mistakenly recognises macOS 11 (Big Sur) as an old
> version
> of macOS, thereby choosing the linker flags `-flat_namespace` and `-undefined
> suppress`.
…
> A library built with the correct linker options (`-undefined dynamic_lookup`)
> should produce this output (built on macOS 10.15):
>
> ❯ otool -hV lib/libgmp.10.dylib
> lib/libgmp.10.dylib:
> Mach header
> magic cputype cpusubtype caps filetype ncmds sizeofcmds
> flags
> MH_MAGIC_64 X86_64 ALL 0x00 DYLIB 14 1632
> NOUNDEFS DYLDLINK TWOLEVEL NO_REEXPORTED_DYLIBS
This what the MacPorts version does:
% otool -hV /opt/local/lib/libgmp.10.dylib
Mach header
magic cputype cpusubtype caps filetype ncmds sizeofcmds flags
MH_MAGIC_64 X86_64 ALL 0x00 DYLIB 14 1616 NOUNDEFS
DYLDLINK TWOLEVEL NO_REEXPORTED_DYLIBS
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