BUG: Compiler gfortran cannot compile program

[ljlamarche]

Describe the bug

Attempting pip install apexpy, meson build fails will the error message Compiler gfortran cannot compile program

To Reproduce

pip install apexpy --no-cache

Expected behavior

Successful Installation

Computer

• OS: macOS 14.7.4
• Python version: 3.9
• Compiler with version: gfortran 12.2.0
• Apexpy version/branch: 2.1.0/main

Additional context

Add any other context about the problem here.

Error Message

Collecting apexpy==2.1.0
  Downloading apexpy-2.1.0.tar.gz (341 kB)
     |████████████████████████████████| 341 kB 1.4 MB/s
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... error
    ERROR: Command errored out with exit status 1:
     command: /Users/emirizio/opt/anaconda3/bin/python /Users/emirizio/opt/anaconda3/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py prepare_metadata_for_build_wheel /var/folders/_c/2ktd85pn6mx_5cskz5ljyzbm0000gq/T/tmp2t6_gk2s
         cwd: /private/var/folders/_c/2ktd85pn6mx_5cskz5ljyzbm0000gq/T/pip-install-u_2u8fsu/apexpy_e2e3cdca225d4e96bd5ef09b5e649554
    Complete output (16 lines):
    + meson setup /private/var/folders/_c/2ktd85pn6mx_5cskz5ljyzbm0000gq/T/pip-install-u_2u8fsu/apexpy_e2e3cdca225d4e96bd5ef09b5e649554 /private/var/folders/_c/2ktd85pn6mx_5cskz5ljyzbm0000gq/T/pip-install-u_2u8fsu/apexpy_e2e3cdca225d4e96bd5ef09b5e649554/.mesonpy-za28nibp -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --native-file=/private/var/folders/_c/2ktd85pn6mx_5cskz5ljyzbm0000gq/T/pip-install-u_2u8fsu/apexpy_e2e3cdca225d4e96bd5ef09b5e649554/.mesonpy-za28nibp/meson-python-native-file.ini
    The Meson build system
    Version: 1.9.1
    Source dir: /private/var/folders/_c/2ktd85pn6mx_5cskz5ljyzbm0000gq/T/pip-install-u_2u8fsu/apexpy_e2e3cdca225d4e96bd5ef09b5e649554
    Build dir: /private/var/folders/_c/2ktd85pn6mx_5cskz5ljyzbm0000gq/T/pip-install-u_2u8fsu/apexpy_e2e3cdca225d4e96bd5ef09b5e649554/.mesonpy-za28nibp
    Build type: native build
    Project name: apexpy
    Project version: 2.1.0
    C compiler for the host machine: cc (clang 16.0.0 "Apple clang version 16.0.0 (clang-1600.0.26.6)")
    C linker for the host machine: cc ld64 1115.7.3
    Host machine cpu family: x86_64
    Host machine cpu: x86_64
    
    ../meson.build:17:0: ERROR: Compiler gfortran cannot compile programs.
    
    A full log can be found at /private/var/folders/_c/2ktd85pn6mx_5cskz5ljyzbm0000gq/T/pip-install-u_2u8fsu/apexpy_e2e3cdca225d4e96bd5ef09b5e649554/.mesonpy-za28nibp/meson-logs/meson-log.txt
    ----------------------------------------
WARNING: Discarding [https://files.pythonhosted.org/packages/b9/03/3b9f9b2af6eb77e4e227a5bce913daa72cd53ec40556fcd027ec4…](https://files.pythonhosted.org/packages/b9/03/3b9f9b2af6eb77e4e227a5bce913daa72cd53ec40556fcd027ec4bd61fea/apexpy-2.1.0.tar.gz#sha256=166d38987468ef671ab989a19178c56b6185c62179769fe23287a6b2322dda6c) (from https://pypi.org/simple/apexpy/) (requires-python:>=3.9). Command errored out with exit status 1: /Users/emirizio/opt/anaconda3/bin/python /Users/emirizio/opt/anaconda3/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py prepare_metadata_for_build_wheel /var/folders/_c/2ktd85pn6mx_5cskz5ljyzbm0000gq/T/tmp2t6_gk2s Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement apexpy==2.1.0 (from versions: 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.1.0, 2.0.0, 2.0.1, 2.0.2, 2.1.0)
ERROR: No matching distribution found for apexpy==2.1.0

[ljlamarche]

Problem pertaining to installation for @emmam42

[ljlamarche]

The exact same error occurs when installing with the --no-binary flag and when attempting to build from source.

One thing to note that may or may not be related is that this is an ARM Mac with an Intel conda installation. I've seen various problems with that before (also Anaconda is no longer supporting Intel packages, which may generally cause issues), but I don't know if that's the root cause or not.

[aburrell]

It might be this:

C compiler for the host machine: cc (clang 16.0.0 "Apple clang version 16.0.0 (clang-1600.0.26.6)")

You need to specify the GCC version of C that pairs with GFortran for it to work. Clang doesn't have a fortran distribution and meson needs the C and Fortran compilers to be from the same background.

If that doesn't work, let me know.

[ljlamarche]

Hm, Interesting... I have no problems using clang with gfortran installing on my MacBook.

  The Meson build system
  Version: 1.9.1
  Source dir: /private/var/folders/yf/c17s54f12c1bg0cxdywsxyxjssh4z4/T/pip-install-53c34pu6/apexpy_15c807c0bb474828ba034eef44d9b1e9
  Build dir: /private/var/folders/yf/c17s54f12c1bg0cxdywsxyxjssh4z4/T/pip-install-53c34pu6/apexpy_15c807c0bb474828ba034eef44d9b1e9/.mesonpy-84254gaj
  Build type: native build
  Project name: apexpy
  Project version: 2.1.0
  C compiler for the host machine: cc (clang 17.0.0 "Apple clang version 17.0.0 (clang-1700.3.19.1)")
  C linker for the host machine: cc ld64 1221.4
  Host machine cpu family: aarch64
  Host machine cpu: aarch64
  Fortran compiler for the host machine: gfortran (gcc 15.1.0 "GNU Fortran (Homebrew GCC 15.1.0) 15.1.0")
  Fortran linker for the host machine: gfortran ld64 1221.4
  Program python found: YES (/Users/e30737/venvs/test/bin/python3.13)
  Found pkg-config: YES (/opt/homebrew/bin/pkg-config) 2.5.1
  Run-time dependency python found: YES 3.13
  Message: /Users/e30737/venvs/test/bin/python3.13
  Message: /usr/local/lib/python3.13/site-packages/
  Message: The Numpy major version is:  2
  Compiler for C supports arguments -Wno-unused-but-set-variable: YES
  Library m found: YES
  Check usable header "Python.h" with dependency python-3.13: YES
  Build targets in project: 3

Regardless, yes, let's give this a go. If you installed gfortran through gcc in homebrew (brew install gcc) I think the command should be something along the lines of:

FC=/opt/homebrew/bin/gfortran CC=/opt/homebrew/bin/gcc-15 pip install -v --no-cache apexpy

[johncoxon]

I get the same error here using either method in the readme or by using FC=/opt/homebrew/bin/gfortran CC=/opt/homebrew/bin/gcc-13 pip install -v --no-cache apexpy

It reports that either gfortran (by using the readme methods) or gcc-13 (using the above method) can’t install programs.

I was wondering if this is because we’ve both installed gfortran through brew? Is the meson process looking for binaries it can find without reading my .zprofile and tripping up?

[EDIT TO ADD] I forgot to mention: I am running ARM conda, not Intel conda, on an MacBook Pro with an M1 Max chip.

[johncoxon]

I tried updating gcc to the latest version with brew install gcc again and now it installs fine with CC=/opt/homebrew/bin/gcc-15 FC=/opt/homebrew/bin/gfortran pip install -v --no-cache apexpy and I have no idea why. Did it just hate gcc-13?

[aburrell]

Maybe! I am currently setting up on Tahoe and MacPorts had issues just installing gcc-13