config/antlr.m4

   1 ##
   2 # Check for ANTLR's antlr3 script.
   3 # Will set ANTLR to the location of the script.
   4 ##
   5 AC_DEFUN([AC_PROG_ANTLR], [
   6   AC_ARG_VAR([ANTLR],[location of the antlr3 script])
   7
   8   # Check the existence of the runantlr script
   9   if test -z "$ANTLR"; then
  10     AC_CHECK_PROGS(ANTLR, [antlr3])
  11   else
  12     AC_CHECK_PROG(ANTLR, "$ANTLR", "$ANTLR", [])
  13   fi
  14   if test no$ANTLR = "no";
  15   then
  16     AC_MSG_WARN(
  17       [Couldn't find the antlr3 script, make sure that the parser code has
  18       been generated already. To obtain ANTLR see <http://www.antlr.org/>.]
  19     )
  20     AC_MSG_RESULT(no)
  21   fi
  22
  23   # Define the ANTL related variables
  24   # AC_SUBST(ANTLR)
  25 ])
  26
  27 ##
  28 # Check the existence of the ANTLR3 C runtime library and headers
  29 # Will set ANTLR_INCLUDES and ANTLR_LIBS to the location of the ANTLR
  30 # headers and library respectively
  31 ##
  32 AC_DEFUN([AC_LIB_ANTLR],[
  33   AC_ARG_VAR(ANTLR_HOME, [path to libantlr3c installation])
  34
  35   # Get the location of the ANTLR3 C includes and libraries
  36   AC_ARG_WITH(
  37     [antlr-dir],
  38     AS_HELP_STRING(
  39       [--with-antlr-dir=PATH],
  40       [path to ANTLR C headers and libraries]
  41     ),
  42     ANTLR_PREFIXES="$withval",
  43     ANTLR_PREFIXES="$ANTLR_HOME /usr/local /usr /opt/local /opt"
  44   )
  45
  46   AC_MSG_CHECKING(for ANTLR3 C runtime library)
  47
  48   # Use C and remember the variables we are changing
  49   AC_LANG_PUSH(C)
  50   OLD_CPPFLAGS="$CPPFLAGS"
  51   OLD_LIBS="$LIBS"
  52
  53   # Try all the includes/libs set in ANTLR_PREFIXES
  54   for antlr_prefix in $ANTLR_PREFIXES
  55   do
  56     CPPFLAGS="$OLD_CPPFLAGS -I$antlr_prefix/include"
  57     LIBS="$OLD_LIBS -L$antlr_prefix/lib -lantlr3c"
  58     AC_LINK_IFELSE(
  59       [
  60         #include <antlr3.h>
  61
  62         int main() {
  63           pANTLR3_UINT8 fName = (pANTLR3_UINT8)"foo";
  64           pANTLR3_INPUT_STREAM input = antlr3AsciiFileStreamNew(fName);
  65           return 0;
  66         }
  67       ],
  68       [
  69         AC_MSG_RESULT(found in $antlr_prefix)
  70         ANTLR_INCLUDES="-I$antlr_prefix/include"
  71         ANTLR_LDFLAGS="-L$antlr_prefix/lib -lantlr3c"
  72         break
  73       ],
  74           [
  75             AC_MSG_RESULT(no)
  76             AC_MSG_ERROR([ANTLR3 C runtime not found, see <http://www.antlr.org/>])
  77           ]
  78     )
  79   done
  80
  81   # Return the old compile variables and pop the language.
  82   LIBS="$OLD_LIBS"
  83   CPPFLAGS="$OLD_CPPFLAGS"
  84   AC_LANG_POP()
  85
  86   # Define the ANTLR include/libs variables
  87   AC_SUBST(ANTLR_INCLUDES)
  88   AC_SUBST(ANTLR_LDFLAGS)
  89 ])