acinclude.m4

   1 dnl ---------------------------------------------------------------------------
   2 dnl
   3 dnl Macros for configure.in for wxWindows by Robert Roebling, Phil Blecker,
   4 dnl Vadim Zeitlin and Ron Lee
   5 dnl
   6 dnl This script is under the wxWindows licence.
   7 dnl
   8 dnl Version: $Id$
   9 dnl ---------------------------------------------------------------------------
  10
  11 dnl ===========================================================================
  12 dnl macros to find the a file in the list of include/lib paths
  13 dnl ===========================================================================
  14
  15 dnl ---------------------------------------------------------------------------
  16 dnl call WX_PATH_FIND_INCLUDES(search path, header name), sets ac_find_includes
  17 dnl to the full name of the file that was found or leaves it empty if not found
  18 dnl ---------------------------------------------------------------------------
  19 AC_DEFUN([WX_PATH_FIND_INCLUDES],
  20 [
  21 ac_find_includes=
  22 for ac_dir in $1;
  23   do
  24     if test -f "$ac_dir/$2"; then
  25       ac_find_includes=$ac_dir
  26       break
  27     fi
  28   done
  29 ])
  30
  31 dnl ---------------------------------------------------------------------------
  32 dnl call WX_PATH_FIND_LIBRARIES(search path, header name), sets ac_find_libraries
  33 dnl to the full name of the file that was found or leaves it empty if not found
  34 dnl ---------------------------------------------------------------------------
  35 AC_DEFUN([WX_PATH_FIND_LIBRARIES],
  36 [
  37 ac_find_libraries=
  38 for ac_dir in $1;
  39   do
  40     for ac_extension in a so sl dylib; do
  41       if test -f "$ac_dir/lib$2.$ac_extension"; then
  42         ac_find_libraries=$ac_dir
  43         break 2
  44       fi
  45     done
  46   done
  47 ])
  48
  49 dnl ---------------------------------------------------------------------------
  50 dnl Path to include, already defined
  51 dnl ---------------------------------------------------------------------------
  52 AC_DEFUN([WX_INCLUDE_PATH_EXIST],
  53 [
  54   ac_path_to_include=$1
  55   echo "$2" | grep "\-I$1" > /dev/null
  56   result=$?
  57   if test $result = 0; then
  58     ac_path_to_include=""
  59   else
  60     ac_path_to_include=" -I$1"
  61   fi
  62 ])
  63
  64 dnl ---------------------------------------------------------------------------
  65 dnl Path to link, already defined
  66 dnl ---------------------------------------------------------------------------
  67 AC_DEFUN([WX_LINK_PATH_EXIST],
  68 [
  69   echo "$2" | grep "\-L$1" > /dev/null
  70   result=$?
  71   if test $result = 0; then
  72     ac_path_to_link=""
  73   else
  74     ac_path_to_link=" -L$1"
  75   fi
  76 ])
  77
  78 dnl ===========================================================================
  79 dnl C++ features test
  80 dnl ===========================================================================
  81
  82 dnl ---------------------------------------------------------------------------
  83 dnl WX_CPP_NEW_HEADERS checks whether the compiler has "new" <iostream> header
  84 dnl or only the old <iostream.h> one - it may be generally assumed that if
  85 dnl <iostream> exists, the other "new" headers (without .h) exist too.
  86 dnl
  87 dnl call WX_CPP_NEW_HEADERS(actiof-if-true, action-if-false-or-cross-compiling)
  88 dnl ---------------------------------------------------------------------------
  89
  90 AC_DEFUN([WX_CPP_NEW_HEADERS],
  91 [
  92   if test "$cross_compiling" = "yes"; then
  93     ifelse([$2], , :, [$2])
  94   else
  95     AC_LANG_SAVE
  96     AC_LANG_CPLUSPLUS
  97
  98     AC_CHECK_HEADERS(iostream)
  99
 100     if test "$ac_cv_header_iostream" = "yes" ; then
 101       ifelse([$1], , :, [$1])
 102     else
 103       ifelse([$2], , :, [$2])
 104     fi
 105
 106     AC_LANG_RESTORE
 107   fi
 108 ])
 109
 110 dnl ---------------------------------------------------------------------------
 111 dnl WX_CPP_BOOL checks whether the C++ compiler has a built in bool type
 112 dnl
 113 dnl call WX_CPP_BOOL - will define HAVE_BOOL if the compiler supports bool
 114 dnl ---------------------------------------------------------------------------
 115
 116 AC_DEFUN([WX_CPP_BOOL],
 117 [
 118   AC_CACHE_CHECK([if C++ compiler supports bool], wx_cv_cpp_bool,
 119   [
 120     AC_LANG_SAVE
 121     AC_LANG_CPLUSPLUS
 122
 123     AC_TRY_COMPILE(
 124       [
 125       ],
 126       [
 127         bool b = true;
 128
 129         return 0;
 130       ],
 131       [
 132         wx_cv_cpp_bool=yes
 133       ],
 134       [
 135         wx_cv_cpp_bool=no
 136       ]
 137     )
 138
 139     AC_LANG_RESTORE
 140   ])
 141
 142   if test "$wx_cv_cpp_bool" = "yes"; then
 143     AC_DEFINE(HAVE_BOOL)
 144   fi
 145 ])
 146
 147 dnl ---------------------------------------------------------------------------
 148 dnl a slightly better AC_C_BIGENDIAN macro which allows cross-compiling
 149 dnl ---------------------------------------------------------------------------
 150
 151 AC_DEFUN([WX_C_BIGENDIAN],
 152 [AC_CACHE_CHECK([whether byte ordering is bigendian], ac_cv_c_bigendian,
 153 [ac_cv_c_bigendian=unknown
 154 # See if sys/param.h defines the BYTE_ORDER macro.
 155 AC_TRY_COMPILE([#include <sys/types.h>
 156 #include <sys/param.h>], [
 157 #if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
 158  bogus endian macros
 159 #endif], [# It does; now see whether it defined to BIG_ENDIAN or not.
 160 AC_TRY_COMPILE([#include <sys/types.h>
 161 #include <sys/param.h>], [
 162 #if BYTE_ORDER != BIG_ENDIAN
 163  not big endian
 164 #endif], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)])
 165 if test $ac_cv_c_bigendian = unknown; then
 166 AC_TRY_RUN([main () {
 167   /* Are we little or big endian?  From Harbison&Steele.  */
 168   union
 169   {
 170     long l;
 171     char c[sizeof (long)];
 172   } u;
 173   u.l = 1;
 174   exit (u.c[sizeof (long) - 1] == 1);
 175 }], [ac_cv_c_bigendian=no], [ac_cv_c_bigendian=yes], [ac_cv_c_bigendian=unknown])
 176 fi])
 177 if test $ac_cv_c_bigendian = unknown; then
 178   AC_MSG_WARN([Assuming little-endian target machine - this may be overriden by adding the line "ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}" to config.cache file])
 179 fi
 180 if test $ac_cv_c_bigendian = yes; then
 181   AC_DEFINE(WORDS_BIGENDIAN)
 182 fi
 183 ])
 184
 185 dnl ---------------------------------------------------------------------------
 186 dnl override AC_ARG_ENABLE/WITH to cache the results in .cache file
 187 dnl ---------------------------------------------------------------------------
 188
 189 AC_DEFUN([WX_ARG_CACHE_INIT],
 190         [
 191           wx_arg_cache_file="configarg.cache"
 192           echo "loading argument cache $wx_arg_cache_file"
 193           rm -f ${wx_arg_cache_file}.tmp
 194           touch ${wx_arg_cache_file}.tmp
 195           touch ${wx_arg_cache_file}
 196         ])
 197
 198 AC_DEFUN([WX_ARG_CACHE_FLUSH],
 199         [
 200           echo "saving argument cache $wx_arg_cache_file"
 201           mv ${wx_arg_cache_file}.tmp ${wx_arg_cache_file}
 202         ])
 203
 204 dnl this macro checks for a three-valued command line --with argument:
 205 dnl   possible arguments are 'yes', 'no', 'sys', or 'builtin'
 206 dnl usage: WX_ARG_SYS_WITH(option, helpmessage, variable-name)
 207 AC_DEFUN([WX_ARG_SYS_WITH],
 208         [
 209           AC_MSG_CHECKING([for --with-$1])
 210           no_cache=0
 211           AC_ARG_WITH($1, [$2],
 212                       [
 213                         if test "$withval" = yes; then
 214                           ac_cv_use_$1='$3=yes'
 215                         elif test "$withval" = no; then
 216                           ac_cv_use_$1='$3=no'
 217                         elif test "$withval" = sys; then
 218                           ac_cv_use_$1='$3=sys'
 219                         elif test "$withval" = builtin; then
 220                           ac_cv_use_$1='$3=builtin'
 221                         else
 222                           AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin])
 223                         fi
 224                       ],
 225                       [
 226                         LINE=`grep "$3" ${wx_arg_cache_file}`
 227                         if test "x$LINE" != x ; then
 228                           eval "DEFAULT_$LINE"
 229                         else
 230                           no_cache=1
 231                         fi
 232
 233                         ac_cv_use_$1='$3='$DEFAULT_$3
 234                       ])
 235
 236           eval "$ac_cv_use_$1"
 237           if test "$no_cache" != 1; then
 238             echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
 239           fi
 240
 241           if test "$$3" = yes; then
 242             AC_MSG_RESULT(yes)
 243           elif test "$$3" = no; then
 244             AC_MSG_RESULT(no)
 245           elif test "$$3" = sys; then
 246             AC_MSG_RESULT([system version])
 247           elif test "$$3" = builtin; then
 248             AC_MSG_RESULT([builtin version])
 249           else
 250             AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin])
 251           fi
 252         ])
 253
 254 dnl this macro checks for a command line argument and caches the result
 255 dnl usage: WX_ARG_WITH(option, helpmessage, variable-name)
 256 AC_DEFUN([WX_ARG_WITH],
 257         [
 258           AC_MSG_CHECKING([for --with-$1])
 259           no_cache=0
 260           AC_ARG_WITH($1, [$2],
 261                       [
 262                         if test "$withval" = yes; then
 263                           ac_cv_use_$1='$3=yes'
 264                         else
 265                           ac_cv_use_$1='$3=no'
 266                         fi
 267                       ],
 268                       [
 269                         LINE=`grep "$3" ${wx_arg_cache_file}`
 270                         if test "x$LINE" != x ; then
 271                           eval "DEFAULT_$LINE"
 272                         else
 273                           no_cache=1
 274                         fi
 275
 276                         ac_cv_use_$1='$3='$DEFAULT_$3
 277                       ])
 278
 279           eval "$ac_cv_use_$1"
 280           if test "$no_cache" != 1; then
 281             echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
 282           fi
 283
 284           if test "$$3" = yes; then
 285             AC_MSG_RESULT(yes)
 286           else
 287             AC_MSG_RESULT(no)
 288           fi
 289         ])
 290
 291 dnl like WX_ARG_WITH but uses AC_ARG_ENABLE instead of AC_ARG_WITH
 292 dnl usage: WX_ARG_ENABLE(option, helpmessage, variable-name)
 293 AC_DEFUN([WX_ARG_ENABLE],
 294         [
 295           AC_MSG_CHECKING([for --enable-$1])
 296           no_cache=0
 297           AC_ARG_ENABLE($1, [$2],
 298                         [
 299                           if test "$enableval" = yes; then
 300                             ac_cv_use_$1='$3=yes'
 301                           else
 302                             ac_cv_use_$1='$3=no'
 303                           fi
 304                         ],
 305                         [
 306                           LINE=`grep "$3" ${wx_arg_cache_file}`
 307                           if test "x$LINE" != x ; then
 308                             eval "DEFAULT_$LINE"
 309                           else
 310                             no_cache=1
 311                           fi
 312
 313                           ac_cv_use_$1='$3='$DEFAULT_$3
 314                         ])
 315
 316           eval "$ac_cv_use_$1"
 317           if test "$no_cache" != 1; then
 318             echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
 319           fi
 320
 321           if test "$$3" = yes; then
 322             AC_MSG_RESULT(yes)
 323           else
 324             AC_MSG_RESULT(no)
 325           fi
 326         ])
 327
 328
 329
 330 dnl ===========================================================================
 331 dnl "3rd party" macros included here because they are not widely available
 332 dnl ===========================================================================
 333
 334 dnl ---------------------------------------------------------------------------
 335 dnl test for availability of iconv()
 336 dnl ---------------------------------------------------------------------------
 337
 338 dnl From Bruno Haible.
 339
 340 AC_DEFUN([AM_ICONV],
 341 [
 342   dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
 343   dnl those with the standalone portable GNU libiconv installed).
 344
 345   AC_ARG_WITH([libiconv-prefix],
 346 [  --with-libiconv-prefix=DIR  search for libiconv in DIR/include and DIR/lib], [
 347     for dir in `echo "$withval" | tr : ' '`; do
 348       if test -d $dir/include; then CPPFLAGS="$CPPFLAGS -I$dir/include"; fi
 349       if test -d $dir/lib; then LDFLAGS="$LDFLAGS -L$dir/lib"; fi
 350     done
 351    ])
 352
 353   AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [
 354     am_cv_func_iconv="no, consider installing GNU libiconv"
 355     am_cv_lib_iconv=no
 356     AC_TRY_LINK([#include <stdlib.h>
 357 #include <iconv.h>],
 358       [iconv_t cd = iconv_open("","");
 359        iconv(cd,NULL,NULL,NULL,NULL);
 360        iconv_close(cd);],
 361       am_cv_func_iconv=yes)
 362     if test "$am_cv_func_iconv" != yes; then
 363       am_save_LIBS="$LIBS"
 364       LIBS="$LIBS -liconv"
 365       AC_TRY_LINK([#include <stdlib.h>
 366 #include <iconv.h>],
 367         [iconv_t cd = iconv_open("","");
 368          iconv(cd,NULL,NULL,NULL,NULL);
 369          iconv_close(cd);],
 370         am_cv_lib_iconv=yes
 371         am_cv_func_iconv=yes)
 372       LIBS="$am_save_LIBS"
 373     fi
 374   ])
 375   if test "$am_cv_func_iconv" = yes; then
 376     AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.])
 377     AC_CACHE_CHECK([if iconv needs const], wx_cv_func_iconv_const,
 378       AC_TRY_COMPILE([
 379 #include <stdlib.h>
 380 #include <iconv.h>
 381 extern
 382 #ifdef __cplusplus
 383 "C"
 384 #endif
 385 #if defined(__STDC__) || defined(__cplusplus)
 386 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
 387 #else
 388 size_t iconv();
 389 #endif
 390         ],
 391         [],
 392         wx_cv_func_iconv_const="no",
 393         wx_cv_func_iconv_const="yes"
 394       )
 395     )
 396
 397     iconv_const=
 398     if test "x$wx_cv_func_iconv_const" = "xyes"; then
 399         iconv_const="const"
 400     fi
 401
 402     AC_DEFINE_UNQUOTED(ICONV_CONST, $iconv_const,
 403       [Define as const if the declaration of iconv() needs const.])
 404   fi
 405   LIBICONV=
 406   if test "$am_cv_lib_iconv" = yes; then
 407     LIBICONV="-liconv"
 408   fi
 409   AC_SUBST(LIBICONV)
 410 ])
 411