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   1 # This file is part of DisOrder.
   2 # Copyright (C) 2004, 2005, 2007, 2008 Richard Kettlewell
   3 #
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful, but
  10 # WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 # General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  17 # USA
  18 #
  19
  20 AC_DEFUN([RJK_FIND_GC_H],[
  21   AC_CACHE_CHECK([looking for <gc.h>],[rjk_cv_gc_h],[
  22     AC_PREPROC_IFELSE([
  23                        #include <gc.h>
  24                       ],
  25                       [rjk_cv_gc_h="on default include path"],[
  26       oldCPPFLAGS="${CPPFLAGS}"
  27       for dir in /usr/include/gc /usr/local/include/gc; do
  28         if test "x$GCC" = xyes; then
  29           CPPFLAGS="${oldCPPFLAGS} -isystem $dir"
  30         else
  31           CPPFLAGS="${oldCPPFLAGS} -I$dir"
  32         fi
  33         AC_PREPROC_IFELSE([
  34                            #include <gc.h>
  35                           ],
  36                           [rjk_cv_gc_h=$dir;break],[rjk_cv_gc_h="not found"])
  37       done
  38       CPPFLAGS="${oldCPPFLAGS}"
  39    ])
  40   ])
  41   case "$rjk_cv_gc_h" in
  42   "not found" )
  43     missing_headers="$missing_headers gc.h"
  44     ;;
  45   /* )
  46     if test "x$GCC" = xyes; then
  47       CPPFLAGS="${CPPFLAGS} -isystem $rjk_cv_gc_h"
  48     else
  49       CPPFLAGS="${CPPFLAGS} -I$rjk_cv_gc_h"
  50     fi
  51     ;;
  52   esac
  53 ])
  54
  55 AC_DEFUN([RJK_CHECK_LIB],[
  56   AC_CACHE_CHECK([for $2 in -l$1],[rjk_cv_lib_$1_$2],[
  57     save_LIBS="$LIBS"
  58     LIBS="${LIBS} -l$1"
  59     AC_LINK_IFELSE([AC_LANG_PROGRAM([$3],[$2;])],
  60                    [rjk_cv_lib_$1_$2=yes],
  61                    [rjk_cv_lib_$1_$2=no])
  62     LIBS="$save_LIBS"
  63   ])
  64   if test $rjk_cv_lib_$1_$2 = yes; then
  65     $4
  66   else
  67     $5
  68   fi
  69 ])
  70
  71 AC_DEFUN([RJK_REQUIRE_PCRE_UTF8],[
  72   AC_CACHE_CHECK([whether libpcre was built with UTF-8 support],
  73                  [rjk_cv_pcre_utf8],[
  74     save_LIBS="$LIBS"
  75     LIBS="$LIBS $1"
  76     AC_RUN_IFELSE([AC_LANG_PROGRAM([
  77                     #include <pcre.h>
  78                     #include <stdio.h>
  79                   ],
  80                   [
  81                     pcre *r;
  82                     const char *errptr;
  83                     int erroffset;
  84
  85                     r = pcre_compile("\x80\x80", PCRE_UTF8,
  86                                      &errptr, &erroffset, 0);
  87                     if(!r) {
  88                       fprintf(stderr, "pcre_compile: %s at %d",
  89                               errptr, erroffset);
  90                       exit(0);
  91                     } else {
  92                       fprintf(stderr, "accepted bogus UTF-8 string\n");
  93                       exit(1);
  94                     }
  95                   ])],
  96                   [rjk_cv_pcre_utf8=yes],
  97                   [rjk_cv_pcre_utf8=no],
  98                   [AC_MSG_WARN([cross-compiling, cannot check libpcre behaviour])])
  99     LIBS="$save_LIBS"
 100   ])
 101   if test $rjk_cv_pcre_utf8 = no; then
 102     AC_MSG_ERROR([please rebuild your pcre library with --enable-utf8])
 103   fi
 104 ])
 105
 106 AC_DEFUN([RJK_GCOV],[
 107   GCOV=${GCOV:-true}
 108   AC_ARG_WITH([gcov],
 109               [AS_HELP_STRING([--with-gcov],
 110                               [Enable coverage testing])],
 111               [if test $withval = yes; then
 112                  CFLAGS="${CFLAGS} -O0 -fprofile-arcs -ftest-coverage"
 113                  GCOV=`echo $CC | sed s'/gcc/gcov/;s/ .*$//'`;
 114                fi])
 115   AC_SUBST([GCOV],[$GCOV])
 116 ])