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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"configure: `--with-dbmliborder=gdbm` no longer satisfies `_dbm`","articleBody":"# Bug report\r\n\r\nIt seems that the `configure` script is no longer able to build `_dbm` module from `gdbm_compat`.\r\n\r\nExcerpts from configure log (full log: [configure.txt](https://github.com/python/cpython/files/9857724/configure.txt)):\r\n\r\n```\r\n$ ./configure -C --with-dbmliborder=gdbm\r\n[...]\r\nchecking gdbm.h usability... yes\r\nchecking gdbm.h presence... yes\r\nchecking for gdbm.h... yes\r\nchecking for gdbm_open in -lgdbm... yes\r\nchecking ndbm.h usability... no\r\nchecking ndbm.h presence... no\r\nchecking for ndbm.h... no\r\nchecking for ndbm presence and linker args...  ()\r\nchecking gdbm/ndbm.h usability... yes\r\nchecking gdbm/ndbm.h presence... yes\r\nchecking for gdbm/ndbm.h... yes\r\nchecking gdbm-ndbm.h usability... no\r\nchecking gdbm-ndbm.h presence... no\r\nchecking for gdbm-ndbm.h... no\r\nchecking for library containing dbm_open... -lgdbm_compat\r\nchecking db.h usability... no\r\nchecking db.h presence... no\r\nchecking for db.h... no\r\nchecking for --with-dbmliborder... gdbm\r\nchecking for _dbm module CFLAGS and LIBS...  \r\n[...]\r\nchecking for stdlib extension module _dbm... missing\r\nchecking for stdlib extension module _gdbm... yes\r\n[...]\r\n```\r\n\r\nIt seems that the problem is in the following snippet:\r\n\r\n```sh\r\nfor db in $with_dbmliborder; do\r\n  case \"$db\" in\r\n    ndbm)\r\n      if test \"$have_ndbm\" = yes; then\r\n        DBM_CFLAGS=\"-DUSE_NDBM\"\r\n        DBM_LIBS=\"$dbm_ndbm\"\r\n        have_dbm=yes\r\n        break\r\n      fi\r\n      ;;\r\n    gdbm)\r\n      if test \"$have_gdbm_compat\" = yes; then\r\n        DBM_CFLAGS=\"-DUSE_GDBM_COMPAT\"\r\n        DBM_LIBS=\"-lgdbm_compat\"\r\n        have_dbm=yes\r\n        break\r\n      fi\r\n      ;;\r\n```\r\n\r\nHowever, `have_gdbm_compat` is not declared anymore, probably because of:\r\n\r\n```sh\r\nAC_MSG_CHECKING([for ndbm presence and linker args])\r\nAS_CASE([$ac_cv_search_dbm_open],\r\n  [*ndbm*|*gdbm_compat*], [\r\n    dbm_ndbm=\"$ac_cv_search_dbm_open\"\r\n    have_ndbm=yes\r\n  ],\r\n```\r\n\r\ndeclaring `have_ndbm=yes` in this case.\r\n\r\nSeems to have been introduced in ec5e253556875640b1ac514e85c545346ac3f1e0 by @tiran.\r\n\r\n# Your environment\r\n\r\n- CPython versions tested on: 3.12.0a1\r\n- Operating system and architecture: Gentoo/amd64\r\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-98643\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/mgorny","@type":"Person","name":"mgorny"},"datePublished":"2022-10-25T06:48:08.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/98636/cpython/issues/98636"}