acinclude.m4

   1 dnl ---------------------------------------------------------------------------
   2 dnl
   3 dnl Purpose: Cursom macros for autoconf configure script.
   4 dnl Author:  Vadim Zeitlin
   5 dnl Created: 26.05.99
   6 dnl Version: $Id$
   7 dnl ---------------------------------------------------------------------------
   8
   9 dnl ===========================================================================
  10 dnl GKT+ version test
  11 dnl ===========================================================================
  12
  13 dnl ---------------------------------------------------------------------------
  14 dnl AM_PATH_GTK([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
  15 dnl Test for GTK, and define GTK_CFLAGS and GTK_LIBS. Uses variables
  16 dnl gtk_config_prefix and/or gtk_config_exec_prefix if defined.
  17 dnl ---------------------------------------------------------------------------
  18 dnl
  19 AC_DEFUN(AM_PATH_GTK,
  20 [
  21   if test x$gtk_config_exec_prefix != x ; then
  22      gtk_config_args="$gtk_config_args --exec-prefix=$gtk_config_exec_prefix"
  23      if test x${GTK_CONFIG+set} != xset ; then
  24         GTK_CONFIG=$gtk_config_exec_prefix/bin/gtk-config
  25      fi
  26   fi
  27   if test x$gtk_config_prefix != x ; then
  28      gtk_config_args="$gtk_config_args --prefix=$gtk_config_prefix"
  29      if test x${GTK_CONFIG+set} != xset ; then
  30         GTK_CONFIG=$gtk_config_prefix/bin/gtk-config
  31      fi
  32   fi
  33
  34   AC_PATH_PROG(GTK_CONFIG, gtk-config, no)
  35   min_gtk_version=ifelse([$1], ,0.99.7,$1)
  36   AC_MSG_CHECKING(for GTK - version >= $min_gtk_version)
  37   no_gtk=""
  38   if test "$GTK_CONFIG" != "no" ; then
  39     GTK_CFLAGS=`$GTK_CONFIG --cflags`
  40     GTK_LIBS=`$GTK_CONFIG --libs`
  41     ac_save_CFLAGS="$CFLAGS"
  42     ac_save_LIBS="$LIBS"
  43     CFLAGS="$CFLAGS $GTK_CFLAGS"
  44     LIBS="$LIBS $GTK_LIBS"
  45 dnl
  46 dnl Now check if the installed GTK is sufficiently new. (Also sanity
  47 dnl checks the results of gtk-config to some extent)
  48 dnl
  49     AC_TRY_RUN([
  50 #include <gtk/gtk.h>
  51 #include <stdio.h>
  52
  53 int
  54 main ()
  55 {
  56   int major, minor, micro;
  57
  58   if (sscanf("$min_gtk_version", "%d.%d.%d", &major, &minor, &micro) != 3) {
  59      printf("%s, bad version string\n", "$min_gtk_version");
  60      exit(1);
  61    }
  62
  63    if (gtk_minor_version == 1) return FALSE;
  64
  65    return !((gtk_major_version > major) ||
  66             ((gtk_major_version == major) && (gtk_minor_version > minor)) ||
  67             ((gtk_major_version == major) && (gtk_minor_version == minor) && (gtk_micro_version >= micro)));
  68 }
  69 ],, no_gtk=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
  70      CFLAGS="$ac_save_CFLAGS"
  71      LIBS="$ac_save_LIBS"
  72   else
  73      no_gtk=yes
  74   fi
  75   if test "x$no_gtk" = x ; then
  76      AC_MSG_RESULT(yes)
  77      ifelse([$2], , :, [$2])
  78   else
  79      AC_MSG_RESULT(no)
  80      GTK_CFLAGS=""
  81      GTK_LIBS=""
  82      ifelse([$3], , :, [$3])
  83   fi
  84   AC_SUBST(GTK_CFLAGS)
  85   AC_SUBST(GTK_LIBS)
  86 ])
  87
  88 dnl ===========================================================================
  89 dnl macros to find the a file in the list of include/lib paths
  90 dnl ===========================================================================
  91
  92 dnl ---------------------------------------------------------------------------
  93 dnl call WX_PATH_FIND_INCLUDES(search path, header name), sets ac_find_includes
  94 dnl to the full name of the file that was found or leaves it empty if not found
  95 dnl ---------------------------------------------------------------------------
  96 AC_DEFUN(WX_PATH_FIND_INCLUDES,
  97 [
  98 ac_find_includes=
  99 for ac_dir in $1;
 100   do
 101     if test -f "$ac_dir/$2"; then
 102       ac_find_includes=$ac_dir
 103       break
 104     fi
 105   done
 106 ])
 107
 108 dnl ---------------------------------------------------------------------------
 109 dnl call WX_PATH_FIND_LIBRARIES(search path, header name), sets ac_find_includes
 110 dnl to the full name of the file that was found or leaves it empty if not found
 111 dnl ---------------------------------------------------------------------------
 112 AC_DEFUN(WX_PATH_FIND_LIBRARIES,
 113 [
 114 ac_find_libraries=
 115 for ac_dir in $1;
 116   do
 117     for ac_extension in a so sl; do
 118       if test -f "$ac_dir/lib$2.$ac_extension"; then
 119         ac_find_libraries=$ac_dir
 120         break 2
 121       fi
 122     done
 123   done
 124 ])
 125
 126 dnl ---------------------------------------------------------------------------
 127 dnl Path to include, already defined
 128 dnl ---------------------------------------------------------------------------
 129 AC_DEFUN(WX_INCLUDE_PATH_EXIST,
 130 [
 131   ac_path_to_include=$1
 132   echo "$2" | grep "\-I$1" > /dev/null
 133   result=$?
 134   if test $result = 0; then
 135     ac_path_to_include=""
 136   else
 137     ac_path_to_include="-I$1"
 138   fi
 139 ])
 140
 141 dnl ---------------------------------------------------------------------------
 142 dnl Path to link, already defined
 143 dnl ---------------------------------------------------------------------------
 144 AC_DEFUN(WX_LINK_PATH_EXIST,
 145 [
 146   echo "$2" | grep "\-L$1" > /dev/null
 147   result=$?
 148   if test $result = 0; then
 149     ac_path_to_link=""
 150   else
 151     ac_path_to_link="-L$1"
 152   fi
 153 ])
 154
 155 dnl ===========================================================================
 156 dnl C++ features test
 157 dnl ===========================================================================
 158
 159 dnl ---------------------------------------------------------------------------
 160 dnl WX_CPP_NEW_HEADERS checks whether the compiler has "new" <iostream> header
 161 dnl or only the old <iostream.h> one - it may be generally assumed that if
 162 dnl <iostream> exists, the other "new" headers (without .h) exist too.
 163 dnl
 164 dnl call WX_CPP_NEW_HEADERS(actiof-if-true, action-if-false-or-cross-compiling)
 165 dnl ---------------------------------------------------------------------------
 166
 167 AC_DEFUN(WX_CPP_NEW_HEADERS,
 168 [
 169   if test "$cross_compiling" = "yes"; then
 170     ifelse([$2], , :, [$2])
 171   else
 172     AC_LANG_SAVE
 173     AC_LANG_CPLUSPLUS
 174
 175     AC_CHECK_HEADERS(iostream)
 176
 177     if test "x$HAVE_IOSTREAM" = x ; then
 178       ifelse([$2], , :, [$2])
 179     else
 180       ifelse([$1], , :, [$1])
 181     fi
 182
 183     AC_LANG_RESTORE
 184   fi
 185 ])
 186
 187 dnl ---------------------------------------------------------------------------
 188 dnl WX_CPP_BOOL checks whether the C++ compiler has a built in bool type
 189 dnl
 190 dnl call WX_CPP_BOOL - will define HAVE_BOOL if the compiler supports bool
 191 dnl ---------------------------------------------------------------------------
 192
 193 AC_DEFUN(WX_CPP_BOOL,
 194 [
 195   AC_CACHE_CHECK([if C++ compiler supports bool], wx_cv_cpp_bool,
 196   [
 197     AC_LANG_SAVE
 198     AC_LANG_CPLUSPLUS
 199
 200     AC_TRY_RUN([
 201         int main()
 202         {
 203             bool b = true;
 204
 205             return 0;
 206         }
 207       ],
 208       [
 209         AC_DEFINE(HAVE_BOOL)
 210         wx_cv_cpp_bool=yes
 211       ],
 212       wx_cv_cpp_bool=no,
 213       wx_cv_cpp_bool=no
 214     )
 215
 216     AC_LANG_RESTORE
 217   ])
 218
 219   if test "$wx_cv_cpp_bool" = "yes"; then
 220     AC_DEFINE(HAVE_BOOL)
 221   fi
 222 ])
 223
 224 dnl ---------------------------------------------------------------------------
 225 dnl WX_CPP_SIZE_T_IS_NOT_INT checks whether size_t and int are different types,
 226 dnl i.e. whether we may overload operator[] on its argument type
 227 dnl ---------------------------------------------------------------------------
 228
 229 AC_DEFUN(WX_CPP_SIZE_T_IS_NOT_INT,
 230 [
 231   AC_CACHE_CHECK([if size_t and int are different types], wx_cv_cpp_sizet_not_int,
 232   [
 233     AC_LANG_SAVE
 234     AC_LANG_CPLUSPLUS
 235
 236     AC_TRY_RUN([
 237         #include <stdlib.h>
 238
 239         class S
 240         {
 241         public:
 242           S(char *s) { m_s = s; }
 243
 244           char operator[](size_t n) const { return m_s[n]; }
 245           char operator[](int n) const { return m_s[n]; }
 246
 247         private:
 248           char *m_s;
 249         };
 250
 251         int main()
 252         {
 253             S s("dummy");
 254             size_t n1 = 2;
 255             int n2 = 3;
 256
 257             return s[n1] == s[n2];
 258         }
 259       ],
 260       AC_DEFINE(wxUSE_SIZE_T_STRING_OPERATOR) wx_cv_cpp_sizet_not_int=yes,
 261       wx_cv_cpp_sizet_not_int=no,
 262       wx_cv_cpp_sizet_not_int=no
 263     )
 264
 265     AC_LANG_RESTORE
 266   ])
 267 ])
 268
 269 dnl ---------------------------------------------------------------------------
 270 dnl a slightly better AC_C_BIGENDIAN macro which allows cross-compiling
 271 dnl ---------------------------------------------------------------------------
 272
 273 AC_DEFUN(WX_C_BIGENDIAN,
 274 [AC_CACHE_CHECK(whether byte ordering is bigendian, ac_cv_c_bigendian,
 275 [ac_cv_c_bigendian=unknown
 276 # See if sys/param.h defines the BYTE_ORDER macro.
 277 AC_TRY_COMPILE([#include <sys/types.h>
 278 #include <sys/param.h>], [
 279 #if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
 280  bogus endian macros
 281 #endif], [# It does; now see whether it defined to BIG_ENDIAN or not.
 282 AC_TRY_COMPILE([#include <sys/types.h>
 283 #include <sys/param.h>], [
 284 #if BYTE_ORDER != BIG_ENDIAN
 285  not big endian
 286 #endif], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)])
 287 if test $ac_cv_c_bigendian = unknown; then
 288 AC_TRY_RUN([main () {
 289   /* Are we little or big endian?  From Harbison&Steele.  */
 290   union
 291   {
 292     long l;
 293     char c[sizeof (long)];
 294   } u;
 295   u.l = 1;
 296   exit (u.c[sizeof (long) - 1] == 1);
 297 }], ac_cv_c_bigendian=no, ac_cv_c_bigendian=yes, ac_cv_c_bigendian=unknown)
 298 fi])
 299 if test $ac_cv_c_bigendian = unknown; then
 300   AC_MSG_WARN([Assuming little-endian target machine - this may be overriden by adding the line "ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}" to config.cache file])
 301 fi
 302 if test $ac_cv_c_bigendian = yes; then
 303   AC_DEFINE(WORDS_BIGENDIAN)
 304 fi
 305 ])
 306
 307 dnl ---------------------------------------------------------------------------
 308 dnl override AC_ARG_ENABLE/WITH to cache the results in .cache file
 309 dnl ---------------------------------------------------------------------------
 310
 311 AC_DEFUN(WX_ARG_CACHE_INIT,
 312         [
 313           wx_arg_cache_file="configarg.cache"
 314           echo "loading argument cache $wx_arg_cache_file"
 315           rm -f ${wx_arg_cache_file}.tmp
 316           touch ${wx_arg_cache_file}.tmp
 317           touch ${wx_arg_cache_file}
 318         ])
 319
 320 AC_DEFUN(WX_ARG_CACHE_FLUSH,
 321         [
 322           echo "saving argument cache $wx_arg_cache_file"
 323           mv ${wx_arg_cache_file}.tmp ${wx_arg_cache_file}
 324         ])
 325
 326 dnl this macro checks for a command line argument and caches the result
 327 dnl usage: WX_ARG_WITH(option, helpmessage, variable-name)
 328 AC_DEFUN(WX_ARG_WITH,
 329         [
 330           AC_MSG_CHECKING("for --with-$1")
 331           no_cache=0
 332           AC_ARG_WITH($1, $2,
 333                       [
 334                         if test "$withval" = yes; then
 335                           ac_cv_use_$1='$3=yes'
 336                         else
 337                           ac_cv_use_$1='$3=no'
 338                         fi
 339                       ],
 340                       [
 341                         LINE=`grep "$3" ${wx_arg_cache_file}`
 342                         if test "x$LINE" != x ; then
 343                           eval "DEFAULT_$LINE"
 344                         else
 345                           no_cache=1
 346                         fi
 347
 348                         ac_cv_use_$1='$3='$DEFAULT_$3
 349                       ])
 350
 351           eval "$ac_cv_use_$1"
 352           if test "$no_cache" != 1; then
 353             echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
 354           fi
 355
 356           if test "$$3" = yes; then
 357             AC_MSG_RESULT(yes)
 358           else
 359             AC_MSG_RESULT(no)
 360           fi
 361         ])
 362
 363 dnl like WX_ARG_WITH but uses AC_ARG_ENABLE instead of AC_ARG_WITH
 364 dnl usage: WX_ARG_ENABLE(option, helpmessage, variable-name)
 365 AC_DEFUN(WX_ARG_ENABLE,
 366         [
 367           AC_MSG_CHECKING("for --enable-$1")
 368           no_cache=0
 369           AC_ARG_ENABLE($1, $2,
 370                         [
 371                           if test "$enableval" = yes; then
 372                             ac_cv_use_$1='$3=yes'
 373                           else
 374                             ac_cv_use_$1='$3=no'
 375                           fi
 376                         ],
 377                         [
 378                           LINE=`grep "$3" ${wx_arg_cache_file}`
 379                           if test "x$LINE" != x ; then
 380                             eval "DEFAULT_$LINE"
 381                           else
 382                             no_cache=1
 383                           fi
 384
 385                           ac_cv_use_$1='$3='$DEFAULT_$3
 386                         ])
 387
 388           eval "$ac_cv_use_$1"
 389           if test "$no_cache" != 1; then
 390             echo $ac_cv_use_$1 >> ${wx_arg_cache_file}.tmp
 391           fi
 392
 393           if test "$$3" = yes; then
 394             AC_MSG_RESULT(yes)
 395           else
 396             AC_MSG_RESULT(no)
 397           fi
 398         ])
 399
 400 dnl -
 401 dnl - GNU libc extension (added by GL)
 402 dnl -
 403
 404 AC_DEFUN(WX_GNU_EXTENSIONS,
 405 [
 406 AC_MSG_CHECKING([if you need GNU extensions])
 407 AC_CACHE_VAL(wx_cv_gnu_extensions,[
 408    AC_TRY_COMPILE([#include <features.h>],[
 409
 410 #ifndef __GNU_LIBRARY__
 411  Compile error wanted
 412 #endif
 413
 414 ],
 415   [wx_cv_gnu_extensions=yes],
 416   [wx_cv_gnu_extensions=no])
 417 ])
 418
 419 AC_MSG_RESULT($wx_cv_gnu_extensions)
 420 if test "$wx_cv_gnu_extensions" = "yes"; then
 421   AC_DEFINE_UNQUOTED(_GNU_SOURCE)
 422 fi
 423 ])