[nettle] fix build on apple arm macs

[autoantwort]

Describe the pull request

• What does your PR fix? Fixes [nettle] fails to build an x64-osx triplet on Apple Silicon #16464

[Neumann-A]

Isn't this an error in _vcpkg_determine_autotools_host_arch_mac ?

editted out

[Neumann-A]

ah wait. it is in _vcpkg_determine_autotools_target_arch_mac

[Neumann-A]

vcpkg/scripts/cmake/vcpkg_configure_make.cmake

Lines 146 to 160 in c47216a

	macro(_vcpkg_determine_autotools_target_arch_mac out_var)
	list(LENGTH VCPKG_OSX_ARCHITECTURES _num_osx_archs)
	if(_num_osx_archs GREATER_EQUAL 2)
	set(${out_var} "universal")
	else()
	# Better match the arch behavior of config.guess
	# See: https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
	if(VCPKG_OSX_ARCHITECTURES MATCHES "^(ARM|arm)64$")
	set(${out_var} "aarch64")
	else()
	set(${out_var} "${VCPKG_OSX_ARCHITECTURES}")
	endif()
	endif()
	unset(_num_osx_archs)
	endmacro()

needs to be fixed for your use case. don't add this extra arguments in every port

[autoantwort]

_vcpkg_determine_autotools_host_arch_mac is right. It created the following call:

Command failed: /bin/bash ./../src/48e146e54f-e59f545639.clean/configure --build=arm64-apple-darwin --host=x86_64-apple-darwin ...

The Problem is, that the nettle configure tool can not handle arm64-apple-darwin

[autoantwort]

If you only pass --host=x86_64-apple-darwin, everything works. But this is a specific problem of the nettle configure tool. E.g. the icu configure tool can handle --build=arm64-apple-darwin

[Neumann-A]

why not remove

vcpkg/scripts/cmake/vcpkg_configure_make.cmake

Line 440 in c47216a

set(_csc_BUILD_TRIPLET "--build=${BUILD_ARCH}-apple-darwin")

generally? Configure should be able to figure it out any way. Windows just needs it because configure is not common on windows and needs some help in figuring out the correct one which everywhere works.

[autoantwort]

Configure should be able to figure it out any way.

Yeah ok. Then we can remove it.

[autoantwort]

Configure should be able to figure it out any way.

As you can see in #16596, gmp does not build without --build=... and I only have tested one package. Because of that I think it is better to stick with the solution of this PR.

[Neumann-A]

gmp on apple arm seems to be problematic anyway according to the release notes at https://gmplib.org/

[autoantwort]

But it currently builds (and it is a dependency of nettle)

[ras0219-msft]

Waiting to merge #16596 first

[autoantwort]

Already fixed by #16596