config/antlr.m4

   1 ##
   2 # Check for ANTLR's runantlr script. Will set ANTLR to the location of the
   3 # runantlr script
   4 ##
   5 AC_DEFUN([AC_PROG_ANTLR], [
   6
   7   # Get the location of the runantlr script
   8   AC_ARG_WITH(
   9     [antlr],
  10     AC_HELP_STRING(
  11       [--with-antlr=RUNANTLR],
  12       [location of the ANTLR's `runantlr` script]
  13     ),
  14     ANTLR="$withval",
  15   )
  16
  17   # Check the existance of the runantlr script
  18   if test -z "$ANTLR"; then
  19     AC_CHECK_PROGS(ANTLR, [runantlr antlr])
  20   else
  21     AC_CHECK_PROG(ANTLR, "$ANTLR", "$ANTLR", [])
  22   fi
  23   if test no$ANTLR = "no";
  24   then
  25     AC_MSG_WARN(
  26       [Couldn't find the runantlr script, make sure that the parser code has
  27       been generated already. To obtain ANTLR see <http://www.antlr.org/>.]
  28     )
  29     AC_MSG_RESULT(no)
  30   fi
  31
  32   # Define the ANTL related variables
  33   AC_SUBST(ANTLR)
  34 ])
  35
  36 ##
  37 # Check the existnace of the ANTLR C++ runtime library and headers
  38 # Will set ANTLR_CPPFLAGS and ANTLR_LIBS to the location of the ANTLR headers
  39 # and library respectively
  40 ##
  41 AC_DEFUN([AC_LIB_ANTLR],[
  42
  43   # Get the location of the  ANTLR c++ includes and libraries
  44   AC_ARG_WITH(
  45     [antlr-prefix],
  46     AC_HELP_STRING(
  47       [--with-antlr-prefix=PATH],
  48       [set the search path for ANTLR headers and libraries to `PATH/include`
  49        and `PATH/lib`. By default we look in /usr, /usr/local, /opt and
  50        /opt/local.
  51       ]
  52     ),
  53     ANTLR_PREFIXES="$withval",
  54     ANTLR_PREFIXES="/usr/local /usr /opt/local /opt"
  55   )
  56
  57   AC_MSG_CHECKING(for antlr C++ runtime library)
  58
  59   # Use C++ and remember the variables we are changing
  60   AC_LANG_PUSH(C++)
  61   OLD_CPPFLAGS="$CPPFLAGS"
  62   OLD_LIBS="$LIBS"
  63
  64   # Try all the includes/libs set in ANTLR_PREFIXES
  65   for antlr_prefix in $ANTLR_PREFIXES
  66   do
  67     CPPFLAGS="$OLD_CPPFLAGS -I$antlr_prefix/include"
  68     LIBS="$OLD_LIBS -L$antlr_prefix/lib -lantlr-pic"
  69     AC_LINK_IFELSE(
  70       [
  71         #include <antlr/CommonAST.hpp>
  72         class MyAST : public ANTLR_USE_NAMESPACE(antlr)CommonAST {
  73         };
  74         int main() {
  75           MyAST ast;
  76         }
  77       ],
  78       [
  79         AC_MSG_RESULT(found in $antlr_prefix)
  80         ANTLR_INCLUDES="-I$antlr_prefix/include"
  81         ANTLR_LDFLAGS="-L$antlr_prefix/lib -lantlr-pic"
  82         break
  83       ],
  84       [
  85         CPPFLAGS="$OLD_CPPFLAGS -I$antlr_prefix/include"
  86         LIBS="$OLD_LIBS -L$antlr_prefix/lib -lantlr"
  87         AC_LINK_IFELSE(
  88           [
  89             #include <antlr/CommonAST.hpp>
  90             class MyAST : public ANTLR_USE_NAMESPACE(antlr)CommonAST {
  91             };
  92             int main() {
  93               MyAST ast;
  94             }
  95           ],
  96           [
  97             AC_MSG_RESULT(found in $antlr_prefix)
  98             ANTLR_INCLUDES="-I$antlr_prefix/include"
  99             ANTLR_LDFLAGS="-L$antlr_prefix/lib -lantlr"
 100             break
 101           ],
 102           [
 103             AC_MSG_RESULT(no)
 104             AC_MSG_ERROR([ANTLR C++ runtime not found, see <http://www.antlr.org/>])
 105           ]
 106         )
 107       ]
 108     )
 109   done
 110
 111   # Return the old compile variables and pop the language.
 112   LIBS="$OLD_LIBS"
 113   CPPFLAGS="$OLD_CPPFLAGS"
 114   AC_LANG_POP()
 115
 116   # Define the ANTLR include/libs variables
 117   AC_SUBST(ANTLR_INCLUDES)
 118   AC_SUBST(ANTLR_LDFLAGS)
 119 ])