error: command ‘clang’ failed with exit status 1 の対処の仕方（mac）

Contents

1 はじめに
2 エラー詳細
3 対象方法

はじめに
エラー詳細
対象方法

はじめに

$ sudo pip3 install pygame

pipコマンドでpygameをインストールしようとすると、下記のエラーが出た。
「error: command ‘clang’ failed with exit status 1 」

困ったので、対象方法を記す。

環境：mac

エラー詳細

・・・（中略）・・・
    building 'pygame.gfxdraw' extension
    creating build/temp.macosx-10.15-x86_64-3.8
    creating build/temp.macosx-10.15-x86_64-3.8/src_c
    creating build/temp.macosx-10.15-x86_64-3.8/src_c/SDL_gfx
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -DENABLE_NEWBUF=1 -I/NEED_INC_PATH_FIX -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.8/3.8.5/Frameworks/Python.framework/Versions/3.8/include/python3.8 -c src_c/gfxdraw.c -o build/temp.macosx-10.15-x86_64-3.8/src_c/gfxdraw.o
    In file included from src_c/gfxdraw.c:33:
    In file included from src_c/pygame.h:32:
    src_c/_pygame.h:216:10: fatal error: 'SDL.h' file not found
    #include <SDL.h>
             ^~~~~~~
    1 error generated.
    ---
    For help with compilation see:
        https://www.pygame.org/wiki/MacCompile
    To contribute to pygame development see:
        https://www.pygame.org/contribute.html
    ---
    error: command 'clang' failed with exit status 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: /usr/local/opt/python@3.8/bin/python3.8 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/tmp/pip-install-l162cq0k/pygame/setup.py'"'"'; __file__='"'"'/private/tmp/pip-install-l162cq0k/pygame/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/tmp/pip-record-ywey3qut/install-record.txt --single-version-externally-managed --compile --install-headers /usr/local/include/python3.8/pygame Check the logs for full command output.

よく見てみると、エラーの中段に下記のような記載がある。

src_c/_pygame.h:216:10: fatal error: 'SDL.h' file not found
 #include <SDL.h>
 ^~~~~~~ 
1 error generated.

これはpygame.hの216行目でSDL.hがincludeできなくてエラーになっていることがわかる。
つまり、SDL.hをインストールすれば良い。

対象方法

下記のコマンドでSDL.h関連のパッケージをインストールする。

$ brew install sdl sdl_image sdl_mixer sdl_ttf portmidi

もう一度、pipコマンドを叩くと無事インストールできた。

$ sudo pip3 install pygame
WARNING: The directory '/Users/okamotosatoki/Library/Caches/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting pygame
  Downloading pygame-1.9.6.tar.gz (3.2 MB)
     |████████████████████████████████| 3.2 MB 2.7 MB/s 
Building wheels for collected packages: pygame
  Building wheel for pygame (setup.py) ... done
  Created wheel for pygame: filename=pygame-1.9.6-cp38-cp38-macosx_10_15_x86_64.whl size=2222212 sha256=8712112bcd6318e80395b05ca85b095acd8667899b16da526ecc08ecb29d3a87
  Stored in directory: /private/tmp/pip-ephem-wheel-cache-2liurj4r/wheels/5c/3a/34/864e618a7e57b5df7cc5f1d1338aa43e7d566a4749a540c9b7
Successfully built pygame
Installing collected packages: pygame

以上。