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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`grp` module attempts to build even if `getgrent` family of functions are unavailable","articleBody":"# Bug report\n\n### Bug description:\n\nIn the configure script, the only prerequisite for the `grp` module is currently the `getgrgid` function. Older versions of Android have this function, but they don't have the `getgrent` function, which the `grp` module uses unconditionally. This causes the build to fail as follows:\n\n```\n/Users/msmith/Library/Android/sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/darwin-x86_64/bin/x86_64-linux-android21-clang  -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall    -std=c11 -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wstrict-prototypes -Werror=implicit-function-declaration -fvisibility=hidden  -I./Include/internal -I./Include/internal/mimalloc  -I. -I./Include     -c ./Modules/grpmodule.c -o Modules/grpmodule.o\n./Modules/grpmodule.c:127:24: warning: unused variable 'buf2' [-Wunused-variable]\n    char *buf = NULL, *buf2 = NULL;\n                       ^\n./Modules/grpmodule.c:205:24: warning: unused variable 'buf2' [-Wunused-variable]\n    char *buf = NULL, *buf2 = NULL, *name_chars;\n                       ^\n./Modules/grpmodule.c:287:5: error: implicit declaration of function 'setgrent' is invalid in C99 [-Werror,-Wimplicit-function-declaration]\n    setgrent();\n    ^\n./Modules/grpmodule.c:288:17: error: implicit declaration of function 'getgrent' is invalid in C99 [-Werror,-Wimplicit-function-declaration]\n    while ((p = getgrent()) != NULL) {\n                ^\n```\n\n### CPython versions tested on:\n\nCPython main branch\n\n### Operating systems tested on:\n\nOther\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-114876\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/mhsmith","@type":"Person","name":"mhsmith"},"datePublished":"2024-02-01T20:03:46.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/114875/cpython/issues/114875"}