Error building on macOS: undeclared identifier '_SC_PHYS_PAGES'

[wshanks]

Informations

• Qiskit Aer version: 0.11.2
• Python version: 3.10.8
• Operating system: macOS 11.7.2

What is the current behavior?

When trying to build qiskit-aer, I encounter the following error (build log):

  [9/11] Building CXX object qiskit_aer/backends/wrappers/CMakeFiles/controller_wrappers.dir/bindings.cc.o
  FAILED: qiskit_aer/backends/wrappers/CMakeFiles/controller_wrappers.dir/bindings.cc.o
  /Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/_build_env/bin/x86_64-apple-darwin13.4.0-clang++ -Dcontroller_wrappers_EXPORTS -I/Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehol/include/python3.10 -I/Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehol/lib/python3.10/site-packages/pybind11/include -I/Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/work/src -march=core2 -mtune=haswell -mssse3 -ftree-vectorize -fPIC -fPIE -fstack-protector-strong -O2 -pipe -stdlib=libc++ -fvisibility-inlines-hidden -fmessage-length=0 -isystem /Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehol/include -fdebug-prefix-map=/Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/work=/usr/local/src/conda/qiskit-aer-0.11.2 -fdebug-prefix-map=/Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehol=/usr/local/src/conda-prefix -pedantic -Wall -Wfloat-equal -Wundef -Wcast-align -Wwrite-strings -Wmissing-declarations -Wredundant-decls -Wshadow -Woverloaded-virtual -fopenmp=libomp -mpopcnt -O3 -DNDEBUG -arch x86_64 -isysroot /Applications/Xcode_13.2.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk -mmacosx-version-min=10.9 -fPIC -fvisibility=hidden   -fopenmp=libomp -std=gnu++14 -MD -MT qiskit_aer/backends/wrappers/CMakeFiles/controller_wrappers.dir/bindings.cc.o -MF qiskit_aer/backends/wrappers/CMakeFiles/controller_wrappers.dir/bindings.cc.o.d -o qiskit_aer/backends/wrappers/CMakeFiles/controller_wrappers.dir/bindings.cc.o -c /Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/work/qiskit_aer/backends/wrappers/bindings.cc
  In file included from /Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/work/qiskit_aer/backends/wrappers/bindings.cc:19:
  In file included from /Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/work/src/framework/results/pybind_result.hpp:20:
  In file included from /Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/work/src/framework/results/legacy/pybind_data.hpp:19:
  In file included from /Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/work/src/framework/results/legacy/snapshot_data.hpp:22:
  /Users/runner/mambaforge/conda-bld/qiskit-aer_1671388392802/work/src/framework/utils.hpp:1280:34: error: use of undeclared identifier '_SC_PHYS_PAGES'
    size_t pages = (size_t)sysconf(_SC_PHYS_PAGES);
                                   ^

Steps to reproduce the problem

I think this is a bit tricky but the simplest way would be to use conda and conda-build to try to build the recipe in conda-forge/staged-recipes#21404 for qiskit-aer (install conda-build, check out that branch, and run conda-build recipes/qiskit-aer/meta.yaml).

What is the expected behavior?

qiskit-aer builds successfully.

Suggested solutions

Comparing the build environment in the qiskit-aer GitHub Actions CI with the environment from the conda-forge CI (like the one in the build log), what stands out to me is that in the qiskit-aer CI cmake reports the compiler as AppleClang 14.0.0.14000029 while in the conda-forge CI it is reported as Clang 14.0.6. My guess is that _SC_PHYS_PAGES is included in an Apple specific header that the conda build of clang does not include?

Searching for _SC_PHYS_PAGES and osx turns up a few things, mostly related to people trying to compile Linux programs on macOS using gcc. Could qiskit-aer do something like this?

[hhorii]

Could you give steps to reproduce this problem? I got following message after pip install conda-build, checked out conda-forge/staged-recipes@15d761a, and conda-build recipes/qiskit-aer/meta.yaml.

$ conda-build recipes/qiskit-aer/meta.yaml
/conda/lib/python3.9/site-packages/conda_build/cli/main_build.py:390: UserWarning: RECIPE_PATH received is a file (recipes/qiskit-aer/meta.yaml).
It should be a path to a folder.
Forcing conda-build to use the recipe file.
  warnings.warn(
No numpy version specified in conda_build_config.yaml.  Falling back to default numpy value of 1.16
WARNING:conda_build.metadata:No numpy version specified in conda_build_config.yaml.  Falling back to default numpy value of 1.16
Adding in variants from internal_defaults
INFO:conda_build.variants:Adding in variants from internal_defaults
/conda/lib/python3.9/site-packages/conda_build/environ.py:433: UserWarning: The environment variable 'DISABLE_DEPENDENCY_INSTALL' is being passed through with value 'ON'.  If you are splitting build and test phases with --no-test, please ensure that this value is also set similarly at test time.
  warnings.warn(
/conda/lib/python3.9/site-packages/conda_build/environ.py:433: UserWarning: The environment variable 'DISABLE_CONAN' is being passed through with value 'ON'.  If you are splitting build and test phases with --no-test, please ensure that this value is also set similarly at test time.
  warnings.warn(
/conda/lib/python3.9/site-packages/conda_build/environ.py:433: UserWarning: The environment variable 'SKBUILD_CONFIGURE_OPTIONS' is being passed through with value '"-GNinja"'.  If you are splitting build and test phases with --no-test, please ensure that this value is also set similarly at test time.
  warnings.warn(
Skipped: qiskit-aer from /HOME/staged-recipes/recipes/qiskit-aer defines build/skip for this configuration ({'numpy': '1.16', 'cxx_compiler': 'clangxx', 'python': '3.9', 'target_platform': 'osx-64'}).
Renaming work directory '/conda/conda-bld/qiskit-aer_1676886860845/work' to '/conda/conda-bld/qiskit-aer_1676886860845/work_moved_qiskit-aer-0.11.2-py39h331c576_0_osx-64_main_build_loop'
INFO:conda_build.utils:Renaming work directory '/conda/conda-bld/qiskit-aer_1676886860845/work' to '/conda/conda-bld/qiskit-aer_1676886860845/work_moved_qiskit-aer-0.11.2-py39h331c576_0_osx-64_main_build_loop'
shutil.move(work)=/conda/conda-bld/qiskit-aer_1676886860845/work, dest=/conda/conda-bld/qiskit-aer_1676886860845/work_moved_qiskit-aer-0.11.2-py39h331c576_0_osx-64_main_build_loop)
INFO:conda_build.utils:shutil.move(work)=/conda/conda-bld/qiskit-aer_1676886860845/work, dest=/conda/conda-bld/qiskit-aer_1676886860845/work_moved_qiskit-aer-0.11.2-py39h331c576_0_osx-64_main_build_loop)

INFO :: The inputs making up the hashes for the built packages are as follows:
{}


####################################################################################
Resource usage summary:

Total time: 0:00:00.1
CPU usage: sys=0:00:00.0, user=0:00:00.0
Maximum memory usage observed: 0B
Total disk usage observed (not including envs): 0B

[hhorii]

Please let me close this issue because of no response in more than 2 months. Please create a new issue if this issue still remains.

[wshanks]

Oh, wow, I never noticed that you replied to this. I had been waiting for a response. Can we just reopen this? I will make a new issue if not.