Remove the check for librt on Linux because as of autoconf 2.70 or 2.71 the check fails on macOS: configure: error: Failed to find library with shm_open() https://gitlab.gnome.org/GNOME/anjuta/-/issues/30 --- configure.ac.orig 2021-12-13 12:13:13.000000000 -0600 +++ configure.ac 2021-12-13 12:13:31.000000000 -0600 @@ -812,11 +812,6 @@ AC_SUBST(SYMBOL_DB_SHM) -dnl On Linux, need librt for shm_open/shm_unlink -bck_LIBS="$LIBS" -AC_SEARCH_LIBS(shm_open, rt, [SHM_LIBS="$LIBS"], [AC_MSG_ERROR([Failed to find library with shm_open()])]) -AC_SUBST(SHM_LIBS) -LIBS="$bck_LIBS" dnl Test using autotest dnl -----------------------------