[GRASS-git] [OSGeo/grass] 388947: Use ${CC} instead of "cc" for linking on macOS (#611)

[nilason]

  Branch: refs/heads/releasebranch_7_8
  Home:   https://github.com/OSGeo/grass
  Commit: 38894730ff46df72f42fa18d5cb7770b4a475065
      https://github.com/OSGeo/grass/commit/38894730ff46df72f42fa18d5cb7770b4a475065
  Author: nilason <n_larsson at yahoo.com>
  Date:   2020-08-20 (Thu, 20 Aug 2020)

  Changed paths:
    M aclocal.m4
    M configure

  Log Message:
  -----------
  Use ${CC} instead of "cc" for linking on macOS (#611)

Replaces a hardcoded cc by a configured ${CC} in SHLIB_LD. Fixes #609.