Outils de ligne de commande MacOS Catalina et erreurs gcc pendant l'installation

Les outils de ligne de commande donnent une multitude d'erreurs en essayant d'installer MuJoCo. Je soupçonne avec une grande confiance qu'il s'agit d'un problème provenant des outils de ligne de commande sur mon MacOS Catalina puisque j'ai installé mujoco précédemment sur Mojave et sur plusieurs machines ubuntu.

D'abord, je me produis :

xcode-select --install

Pour plus d'informations :

(base) ryanr@RRMBP ~ % /usr/bin/gcc --version
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 11.0.0 (clang-1100.0.33.8)
Target: x86_64-apple-darwin19.0.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

J'installe en utilisant pip3 install 'mujoco-py<2.1,>=2.0'

Je suis accueilli par des erreurs telles que les suivantes :

> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/sys/resource.h:443:34:
> error: expected declaration specifiers before
> '__OSX_AVAILABLE_STARTING'    int     getiopolicy_np(int, int)
> __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
>                                     ^~~~~~~~~~~~~~~~~~~~~~~~

et

  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stdlib.h:144:1: error: expected declaration specifiers before 'div_t'
   div_t  div(int, int) __pure2;
   ^~~~~

et

In file included from /Users/ryanr/.mujoco/mujoco200/include/mujoco.h:34:0,
                   from /private/var/folders/q7/q_59j36d5n31209r5c01mx2w0000gp/T/pip-install-4_wykvnc/mujoco-py/mujoco_py/gl/glshim.h:4,
                   from /private/var/folders/q7/q_59j36d5n31209r5c01mx2w0000gp/T/pip-install-4_wykvnc/mujoco-py/mujoco_py/gl/dummyshim.c:1:
  /usr/local/Cellar/gcc@6/6.5.0_2/lib/gcc/6/gcc/x86_64-apple-darwin18.5.0/6.5.0/include-fixed/math.h:59:19: error: storage class specified for parameter 'float_t'
       typedef float float_t;
                     ^~~~~~~
  /usr/local/Cellar/gcc@6/6.5.0_2/lib/gcc/6/gcc/x86_64-apple-darwin18.5.0/6.5.0/include-fixed/math.h:60:20: error: storage class specified for parameter 'double_t'
       typedef double double_t;
                      ^~~~~~~~
  /usr/local/Cellar/gcc@6/6.5.0_2/lib/gcc/6/gcc/x86_64-apple-darwin18.5.0/6.5.0/include-fixed/math.h:126:12: error: storage class specified for parameter '__math_errhandling'
   extern int __math_errhandling(void);
              ^~~~~~~~~~~~~~~~~~
  /usr/local/Cellar/gcc@6/6.5.0_2/lib/gcc/6/gcc/x86_64-apple-darwin18.5.0/6.5.0/include-fixed/math.h:146:12: error: storage class specified for parameter '__fpclassifyf'
   extern int __fpclassifyf(float);
              ^~~~~~~~~~~~~
  /usr/local/Cellar/gcc@6/6.5.0_2/lib/gcc/6/gcc/x86_64-apple-darwin18.5.0/6.5.0/include-fixed/math.h:147:12: error: storage class specified for parameter '__fpclassifyd'
   extern int __fpclassifyd(double);
              ^~~~~~~~~~~~~
  /usr/local/Cellar/gcc@6/6.5.0_2/lib/gcc/6/gcc/x86_64-apple-darwin18.5.0/6.5.0/include-fixed/math.h:148:12: error: storage class specified for parameter '__fpclassifyl'
   extern int __fpclassifyl(long double);
              ^~~~~~~~~~~~~

et

                                                  ^
  In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/sys/wait.h:110:0,
                   from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stdlib.h:66,
                   from /Users/ryanr/.mujoco/mujoco200/include/mujoco.h:33,
                   from /private/var/folders/q7/q_59j36d5n31209r5c01mx2w0000gp/T/pip-install-jye6hn52/mujoco-py/mujoco_py/gl/glshim.h:4,
                   from /private/var/folders/q7/q_59j36d5n31209r5c01mx2w0000gp/T/pip-install-jye6hn52/mujoco-py/mujoco_py/gl/dummyshim.c:1:
  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/sys/resource.h:443:9: error: old-style parameter declarations in prototyped function definition
   int     getiopolicy_np(int, int) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
           ^~~~~~~~~~~~~~
  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/sys/resource.h:443:1: error: parameter name omitted
   int     getiopolicy_np(int, int) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
   ^~~
  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/sys/resource.h:443:1: error: parameter name omitted
  /private/var/folders/q7/q_59j36d5n31209r5c01mx2w0000gp/T/pip-install-jye6hn52/mujoco-py/mujoco_py/gl/dummyshim.c:37:1: error: expected '{' at end of input
   }
   ^
  error: command '/usr/local/bin/gcc-6' failed with exit status 1
  ----------------------------------------
  ERROR: Failed building wheel for mujoco-py

Avez-vous des suggestions quant à la raison pour laquelle mes outils de ligne de commande échouent sur MacOS Catalina ? Quelles mesures faut-il prendre pour s'assurer que les outils de ligne de commande et gcc sur Catalina fonctionnent comme prévu ?

Un ticket a été ouvert sur le projet MuJoCo-py aquí .