[package] glib/2.72.0: os.version not applied on MacOS

[bkarasm]

Package and Environment Details

• Package Name/Version: glib/2.72.0 (also tried with 2.70.1)
• Operating System+version: MacOS 12.2.1
• Compiler+version: apple-clang 12.0.0
• Conan version: conan 1.45.0
• Python version: Python 3.9.8

Conan profile (output of conan profile show default or conan profile show <profile> if custom profile is in use)

[settings]
os=Macos
os_build=Macos
arch=x86_64
arch_build=x86_64
compiler=apple-clang
compiler.version=12.0
compiler.libcxx=libc++
build_type=Release
[options]
[conf]
[build_requires]
[env]

Steps to reproduce (Include if Applicable)

conan install glib/2.72.0@ -s os.version=10.12 -o glib:shared=True --build missing

Details

By setting os.version on MacOS I would expect that by running otool on any glib library, e.g. otool -l libglib-2.0.0.dylib, I'd see an information that given library is supported from the desired version (10.12 in this case).

Actual output:

...
Load command 9
      cmd LC_BUILD_VERSION
  cmdsize 32
 platform 1
    minos 11.1
      sdk 11.1
   ntools 1
     tool 3
  version 609.8
...

I verified that -mmacosx-version-min=10.12 flag is added to build.ninja so I'm not sure what's going wrong here.

[uilianries]

The setting os.version is not used by Conan Center.

[battlmonstr]

@uilianries What's the correct approach of passing -mmacosx-version-min then?

[uilianries]

@battlmonstr Hello, I commented how to inject compiler flags here: #20492 (comment)

It will not change your package ID. To change the package ID when using tools.build:cxxflags, you can add the follow configuration too:

-c tools.info.package_id:confs='["tools.build:cxxflags"]'

Still, you can add os.version to you settings.yml: https://docs.conan.io/2/examples/config_files/settings/settings_user.html