LibreSSL on macOS cannot be compiled for different architecture

[davidbitterlich]

Hello,

currently I have tried to compile LibreSSL 3.7.3 release from source on macOS Ventura aarch64 with target architecture x86_64. I wanted to get LibreSSL built for both architectures separately.

For building I've used the following commands:

./configure --prefix=mycustomfolder.amd64 --build=x86_64-darwin --enable-asm --disable-shared --with-pic
make clean all install_sw

The compilation finishes without any error. However when I take a look at the libraries, it compiled.
Using lipo, the files are for arm64 only instead of x86_64.

Actually I am not sure if I configured it wrong or if there is an issue in the build chain. I don't use CMake for compilation, just configure and make.

I also found a workaround: after configure, I do get correct x86_64 binaries when I run make in x86_64 mode:

arch -x86_64 make clean all install_sw

Then it compiles true x86_64 binaries.

Additionally I saw this pull request: #877

And this issue #876 which is very similar to my situation but it's actually not the same situation because I don't use CMake at all, only make and configure.

[vszakats]

The reverse (cross-building aarch64 on intel) is working as expected, though in that case there is no asm involved:

export 'CC=clang -arch arm64e'
./configure --build=x86_64-apple-darwin --host=aarch64-apple-darwin --target=aarch64-apple-darwin [...]

Ref: https://github.com/vszakats/curl-for-win/actions/runs/6089877894/job/16523583215#step:3:2095