scripts/haveversions.awk

   1 # This script reads the contents of Versions.all and outputs a definition
   2 # of variable have-VERSION for each symbol version VERSION which is
   3 # defined.
   4 #
   5 # The have-VERSION variables can be used to check that a port supports a
   6 # particular symbol version in makefiles due to its base version.  A test
   7 # for a compatibility symbol which was superseded with a GLIBC_2.15
   8 # version could be tested like this:
   9 #
  10 # ifdef HAVE-GLIBC_2.14
  11 # tests += tst-spawn4-compat
  12 # endif # HAVE-GLIBC_2.14
  13 #
  14 # (NB: GLIBC_2.14 is the symbol version that immediately precedes
  15 # GLIBC_2.15.)
  16
  17 NF == 1 && $1 != "}" {
  18   haveversion[$1] = 1
  19 }
  20 END {
  21   for (i in haveversion)
  22     printf "have-%s = yes\n", i
  23 }