chiark - git - mdw - disorder/blob - acinclude.m4

   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 3 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,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU 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, see <http://www.gnu.org/licenses/>.
  16 #
  17
  18 AC_DEFUN([RJK_FIND_GC_H],[
  19   AC_CACHE_CHECK([looking for <gc.h>],[rjk_cv_gc_h],[
  20     AC_PREPROC_IFELSE([
  21                        #include <gc.h>
  22                       ],
  23                       [rjk_cv_gc_h="on default include path"],[
  24       oldCPPFLAGS="${CPPFLAGS}"
  25       for dir in /usr/include/gc /usr/local/include/gc; do
  26         if test "x$GCC" = xyes; then
  27           CPPFLAGS="${oldCPPFLAGS} -isystem $dir"
  28         else
  29           CPPFLAGS="${oldCPPFLAGS} -I$dir"
  30         fi
  31         AC_PREPROC_IFELSE([
  32                            #include <gc.h>
  33                           ],
  34                           [rjk_cv_gc_h=$dir;break],[rjk_cv_gc_h="not found"])
  35       done
  36       CPPFLAGS="${oldCPPFLAGS}"
  37    ])
  38   ])
  39   case "$rjk_cv_gc_h" in
  40   "not found" )
  41     missing_headers="$missing_headers gc.h"
  42     ;;
  43   /* )
  44     if test "x$GCC" = xyes; then
  45       CPPFLAGS="${CPPFLAGS} -isystem $rjk_cv_gc_h"
  46     else
  47       CPPFLAGS="${CPPFLAGS} -I$rjk_cv_gc_h"
  48     fi
  49     ;;
  50   esac
  51 ])
  52
  53 AC_DEFUN([RJK_CHECK_LIB],[
  54   AC_CACHE_CHECK([for $2 in -l$1],[rjk_cv_lib_$1_$2],[
  55     save_LIBS="$LIBS"
  56     LIBS="${LIBS} -l$1"
  57     AC_LINK_IFELSE([AC_LANG_PROGRAM([$3],[$2;])],
  58                    [rjk_cv_lib_$1_$2=yes],
  59                    [rjk_cv_lib_$1_$2=no])
  60     LIBS="$save_LIBS"
  61   ])
  62   if test $rjk_cv_lib_$1_$2 = yes; then
  63     $4
  64   else
  65     $5
  66   fi
  67 ])
  68
  69 AC_DEFUN([RJK_REQUIRE_PCRE_UTF8],[
  70   AC_CACHE_CHECK([whether libpcre was built with UTF-8 support],
  71                  [rjk_cv_pcre_utf8],[
  72     save_LIBS="$LIBS"
  73     LIBS="$LIBS $1"
  74     AC_RUN_IFELSE([AC_LANG_PROGRAM([
  75                     #include <pcre.h>
  76                     #include <stdio.h>
  77                   ],
  78                   [
  79                     pcre *r;
  80                     const char *errptr;
  81                     int erroffset;
  82
  83                     r = pcre_compile("\x80\x80", PCRE_UTF8,
  84                                      &errptr, &erroffset, 0);
  85                     if(!r) {
  86                       fprintf(stderr, "pcre_compile: %s at %d",
  87                               errptr, erroffset);
  88                       exit(0);
  89                     } else {
  90                       fprintf(stderr, "accepted bogus UTF-8 string\n");
  91                       exit(1);
  92                     }
  93                   ])],
  94                   [rjk_cv_pcre_utf8=yes],
  95                   [rjk_cv_pcre_utf8=no],
  96                   [AC_MSG_WARN([cross-compiling, cannot check libpcre behaviour])])
  97     LIBS="$save_LIBS"
  98   ])
  99   if test $rjk_cv_pcre_utf8 = no; then
 100     AC_MSG_ERROR([please rebuild your pcre library with --enable-utf8])
 101   fi
 102 ])
 103
 104 AC_DEFUN([RJK_GCOV],[
 105   GCOV=${GCOV:-true}
 106   AC_ARG_WITH([gcov],
 107               [AS_HELP_STRING([--with-gcov],
 108                               [Enable coverage testing])],
 109               [if test $withval = yes; then
 110                  CFLAGS="${CFLAGS} -O0 -fprofile-arcs -ftest-coverage"
 111                  GCOV=`echo $CC | sed s'/gcc/gcov/;s/ .*$//'`;
 112                fi])
 113   AC_SUBST([GCOV],[$GCOV])
 114 ])