acinclude.m4

   1 dnl CLN_HEADER_GETVAL(NAME,FILE)
   2 dnl Expand at autoconf time to the value of a "#define NAME" from the given
   3 dnl FILE. The regexps here aren't very robust, but are enough for us.
   4 dnl /dev/null as a parameter prevents a hang if $2 is accidentally omitted.
   5 dnl (shamelessly ripped from GMP, and changed prefix to CL_).
   6
   7 define(CL_HEADER_GETVAL,
   8 [patsubst(patsubst(
   9 esyscmd([grep "^#define $1 " $2 /dev/null 2>/dev/null]),
  10 [^.*$1[         ]+],[]),
  11 [[
  12         ]*$],[])])
  13 define(CL_GET_VERSION,
  14 [CL_HEADER_GETVAL(CL_VERSION_$1,[include/cln/version.h])])
  15 define(CL_GET_LTVERSION,
  16 [CL_HEADER_GETVAL(CL_LT_$1,[include/cln/version.h])])
  17