src/tiff/configure.ac

   1 dnl                                               -*- Autoconf -*-
   2 dnl Tag Image File Format (TIFF) Software
   3 dnl
   4 dnl Copyright (C) 2004, Andrey Kiselev <dron@ak4719.spb.edu>
   5 dnl
   6 dnl Permission to use, copy, modify, distribute, and sell this software and
   7 dnl its documentation for any purpose is hereby granted without fee, provided
   8 dnl that (i) the above copyright notices and this permission notice appear in
   9 dnl all copies of the software and related documentation, and (ii) the names of
  10 dnl Sam Leffler and Silicon Graphics may not be used in any advertising or
  11 dnl publicity relating to the software without the specific, prior written
  12 dnl permission of Sam Leffler and Silicon Graphics.
  13 dnl
  14 dnl THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
  15 dnl EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  16 dnl WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  17 dnl
  18 dnl IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
  19 dnl ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
  20 dnl OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  21 dnl WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  22 dnl LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  23 dnl OF THIS SOFTWARE.
  24
  25 dnl Process this file with autoconf to produce a configure script.
  26
  27 AC_PREREQ(2.59)
  28 AC_INIT([LibTIFF Software], 3.8.2, [tiff@lists.maptools.org], tiff)
  29 AC_CONFIG_AUX_DIR(config)
  30 AC_CONFIG_MACRO_DIR(m4)
  31 AC_LANG(C)
  32
  33 dnl Compute the canonical build and host system type variables
  34 AC_CANONICAL_BUILD
  35 AC_CANONICAL_HOST
  36
  37 AM_INIT_AUTOMAKE
  38 dnl Do not rebuild generated files every time
  39 AM_MAINTAINER_MODE
  40
  41 dnl Versioning.
  42 dnl Don't fill the ALPHA_VERSION field, if not applicable.
  43 LIBTIFF_MAJOR_VERSION=3
  44 LIBTIFF_MINOR_VERSION=8
  45 LIBTIFF_MICRO_VERSION=2
  46 LIBTIFF_ALPHA_VERSION=
  47 LIBTIFF_VERSION=$LIBTIFF_MAJOR_VERSION.$LIBTIFF_MINOR_VERSION.$LIBTIFF_MICRO_VERSION$LIBTIFF_ALPHA_VERSION
  48 dnl This will be used with the 'make release' target
  49 LIBTIFF_RELEASE_DATE=`date +"%Y%m%d"`
  50
  51 # This is a special hack for OpenBSD and MirOS systems. The dynamic linker
  52 # in OpenBSD uses some special semantics for shared libraries. Their soname
  53 # contains only two numbers, major and minor.
  54 # See http://bugzilla.remotesensing.org/show_bug.cgi?id=838 for details.
  55 case "$target_os" in
  56     openbsd* | mirbsd*)
  57         LIBTIFF_VERSION_INFO=$LIBTIFF_MAJOR_VERSION$LIBTIFF_MINOR_VERSION:$LIBTIFF_MICRO_VERSION$LIBTIFF_ALPHA_VERSION:0
  58         ;;
  59     *)
  60         LIBTIFF_VERSION_INFO=$LIBTIFF_MAJOR_VERSION:$LIBTIFF_MINOR_VERSION:$LIBTIFF_MICRO_VERSION$LIBTIFF_ALPHA_VERSION
  61         ;;
  62 esac
  63
  64 AC_SUBST(LIBTIFF_MAJOR_VERSION)
  65 AC_SUBST(LIBTIFF_MINOR_VERSION)
  66 AC_SUBST(LIBTIFF_MICRO_VERSION)
  67 AC_SUBST(LIBTIFF_ALPHA_VERSION)
  68 AC_SUBST(LIBTIFF_VERSION)
  69 AC_SUBST(LIBTIFF_VERSION_INFO)
  70 AC_SUBST(LIBTIFF_RELEASE_DATE)
  71
  72 dnl Checks for programs.
  73 AC_PROG_CC
  74 AM_PROG_CC_C_O
  75
  76 dnl We want warnings. As many warnings as possible.
  77 VL_PROG_CC_WARNINGS()
  78
  79 AC_PROG_INSTALL
  80 AC_PROG_LN_S
  81 AC_PROG_LIBTOOL
  82 AC_LIBTOOL_WIN32_DLL
  83
  84 dnl Checks for libraries.
  85 AC_CHECK_LIB([c], [main])
  86
  87 dnl We don't need to add math library at all targets
  88 case "$target_os" in
  89     cygwin* | mingw32* | beos* | darwin*)
  90         ;;
  91     *)
  92         AC_CHECK_LIB(m,main,,,)
  93         ;;
  94 esac
  95
  96 dnl Checks for header files.
  97 AC_CHECK_HEADERS([assert.h fcntl.h limits.h malloc.h search.h sys/time.h unistd.h])
  98
  99 dnl Checks for typedefs, structures, and compiler characteristics.
 100 AC_C_CONST
 101 AC_C_INLINE
 102 AC_C_BIGENDIAN
 103 AC_TYPE_OFF_T
 104 AC_TYPE_SIZE_T
 105 AC_CHECK_SIZEOF(int)
 106 AC_CHECK_SIZEOF(long)
 107 AC_HEADER_TIME
 108 AC_STRUCT_TM
 109 dnl Some compilers (IBM VisualAge) has these types defined, so check it here:
 110 AC_CHECK_TYPES([int8, int16, int32],,,
 111 [
 112 #if HAVE_INTTYPES_H
 113 # include <inttypes.h>
 114 #endif
 115 ])
 116
 117 dnl Checks for library functions.
 118 AC_CHECK_FUNCS([floor isascii memmove memset mmap pow sqrt strchr strrchr strstr strtol])
 119
 120 dnl Will use local replacements for unavailable functions
 121 AC_REPLACE_FUNCS(getopt)
 122 AC_REPLACE_FUNCS(strcasecmp)
 123 AC_REPLACE_FUNCS(strtoul)
 124 AC_REPLACE_FUNCS(lfind)
 125
 126 dnl ---------------------------------------------------------------------------
 127 dnl Check the native cpu bit order.
 128 dnl ---------------------------------------------------------------------------
 129 AC_MSG_CHECKING([native cpu bit order])
 130 case "$target_cpu" in
 131     i*86*)
 132         HOST_FILLORDER=FILLORDER_LSB2MSB
 133         AC_MSG_RESULT([lsb2msb])
 134         ;;
 135     *)
 136         HOST_FILLORDER=FILLORDER_MSB2LSB
 137         AC_MSG_RESULT([msb2lsb])
 138         ;;
 139 esac
 140 AC_DEFINE_UNQUOTED(HOST_FILLORDER, $HOST_FILLORDER, [Set the native cpu bit order (FILLORDER_LSB2MSB or FILLORDER_MSB2LSB)])
 141
 142 dnl ---------------------------------------------------------------------------
 143 dnl Configure legacy tifconf.h HOST_BIGENDIAN.
 144 dnl ---------------------------------------------------------------------------
 145 if test "$ac_cv_c_bigendian" = yes ; then
 146     HOST_BIGENDIAN=1
 147 else
 148     HOST_BIGENDIAN=0
 149 fi
 150 AC_DEFINE_UNQUOTED(HOST_BIGENDIAN,$HOST_BIGENDIAN,[Native cpu byte order: 1 if big-endian (Motorola) or 0 if little-endian (Intel)])
 151
 152 dnl ---------------------------------------------------------------------------
 153 dnl Make the POSIX.2 features available.
 154 dnl ---------------------------------------------------------------------------
 155 #_POSIX_C_SOURCE=2
 156 #AC_DEFINE_UNQUOTED(_POSIX_C_SOURCE, $_POSIX_C_SOURCE, [Define this macro to a positive integer to control which POSIX functionality is made available.])
 157
 158 dnl ---------------------------------------------------------------------------
 159 dnl Set the floating point format.
 160 dnl FIXME: write appropriate test.
 161 dnl ---------------------------------------------------------------------------
 162 HAVE_IEEEFP=1
 163 AC_DEFINE_UNQUOTED(HAVE_IEEEFP, $HAVE_IEEEFP, [Define as 0 or 1 according to the floating point format suported by the machine])
 164
 165 dnl ---------------------------------------------------------------------------
 166 dnl Enable run-time paths to libraries usage.
 167 dnl ---------------------------------------------------------------------------
 168
 169 AC_ARG_ENABLE(rpath,
 170               AS_HELP_STRING([--enable-rpath],
 171                              [Enable runtime linker paths (-R libtool option)]),
 172               [HAVE_RPATH=$enableval], [HAVE_RPATH=no])
 173 AM_CONDITIONAL(HAVE_RPATH, test "$HAVE_RPATH" = "yes")
 174
 175 dnl ---------------------------------------------------------------------------
 176 dnl Support large files.
 177 dnl ---------------------------------------------------------------------------
 178
 179 AC_SYS_LARGEFILE
 180
 181 dnl ---------------------------------------------------------------------------
 182 dnl Point to path where we should install documentation.
 183 dnl ---------------------------------------------------------------------------
 184
 185 LIBTIFF_DOCDIR=\${prefix}/share/doc/${PACKAGE}-${LIBTIFF_VERSION}
 186
 187 AC_ARG_WITH(docdir,
 188             AS_HELP_STRING([--with-docdir=DIR],
 189                            [directory where documentation should be installed]),,)
 190 if test "x$with_docdir" != "x" ; then
 191   LIBTIFF_DOCDIR=$with_docdir
 192 fi
 193
 194 AC_SUBST(LIBTIFF_DOCDIR)
 195
 196 dnl ---------------------------------------------------------------------------
 197 dnl Switch on/off internal codecs.
 198 dnl ---------------------------------------------------------------------------
 199
 200 AC_ARG_ENABLE(ccitt,
 201               AS_HELP_STRING([--disable-ccitt],
 202                              [disable support for CCITT Group 3 & 4 algorithms]),
 203               [HAVE_CCITT=$enableval], [HAVE_CCITT=yes])
 204
 205 if test "$HAVE_CCITT" = "yes" ; then
 206   AC_DEFINE(CCITT_SUPPORT,1,[Support CCITT Group 3 & 4 algorithms])
 207 fi
 208
 209 AC_ARG_ENABLE(packbits,
 210               AS_HELP_STRING([--disable-packbits],
 211                              [disable support for Macintosh PackBits algorithm]),
 212               [HAVE_PACKBITS=$enableval], [HAVE_PACKBITS=yes])
 213
 214 if test "$HAVE_PACKBITS" = "yes" ; then
 215   AC_DEFINE(PACKBITS_SUPPORT,1,[Support Macintosh PackBits algorithm])
 216 fi
 217
 218 AC_ARG_ENABLE(lzw,
 219               AS_HELP_STRING([--disable-lzw],
 220                              [disable support for LZW algorithm]),
 221               [HAVE_LZW=$enableval], [HAVE_LZW=yes])
 222
 223 if test "$HAVE_LZW" = "yes" ; then
 224   AC_DEFINE(LZW_SUPPORT,1,[Support LZW algorithm])
 225 fi
 226
 227 AC_ARG_ENABLE(thunder,
 228               AS_HELP_STRING([--disable-thunder],
 229                              [disable support for ThunderScan 4-bit RLE algorithm]),
 230               [HAVE_THUNDER=$enableval], [HAVE_THUNDER=yes])
 231
 232 if test "$HAVE_THUNDER" = "yes" ; then
 233   AC_DEFINE(THUNDER_SUPPORT,1,[Support ThunderScan 4-bit RLE algorithm])
 234 fi
 235
 236 HAVE_NEXT=yes
 237
 238 AC_ARG_ENABLE(next,
 239               AS_HELP_STRING([--disable-next],
 240                              [disable support for NeXT 2-bit RLE algorithm]),
 241               [HAVE_NEXT=$enableval], [HAVE_NEXT=yes])
 242
 243 if test "$HAVE_NEXT" = "yes" ; then
 244   AC_DEFINE(NEXT_SUPPORT,1,[Support NeXT 2-bit RLE algorithm])
 245 fi
 246
 247 AC_ARG_ENABLE(logluv,
 248               AS_HELP_STRING([--disable-logluv],
 249                              [disable support for LogLuv high dynamic range encoding]),
 250               [HAVE_LOGLUV=$enableval], [HAVE_LOGLUV=yes])
 251
 252 if test "$HAVE_LOGLUV" = "yes" ; then
 253   AC_DEFINE(LOGLUV_SUPPORT,1,[Support LogLuv high dynamic range encoding])
 254 fi
 255
 256 dnl ---------------------------------------------------------------------------
 257 dnl Switch on/off support for Microsoft Document Imaging
 258 dnl ---------------------------------------------------------------------------
 259
 260 AC_ARG_ENABLE(mdi,
 261               AS_HELP_STRING([--disable-mdi],
 262                              [disable support for Microsoft Document Imaging]),
 263               [HAVE_MDI=$enableval], [HAVE_MDI=yes])
 264
 265 if test "$HAVE_MDI" = "yes" ; then
 266   AC_DEFINE(MDI_SUPPORT,1,[Support Microsoft Document Imaging format])
 267 fi
 268
 269 dnl ---------------------------------------------------------------------------
 270 dnl Check for ZLIB.
 271 dnl ---------------------------------------------------------------------------
 272
 273 HAVE_ZLIB=no
 274
 275 AC_ARG_ENABLE(zlib,
 276               AS_HELP_STRING([--disable-zlib],
 277                              [disable Zlib usage (required for Deflate compression, enabled by default)]),,)
 278 AC_ARG_WITH(zlib-include-dir,
 279             AS_HELP_STRING([--with-zlib-include-dir=DIR],
 280                            [location of Zlib headers]),,)
 281 AC_ARG_WITH(zlib-lib-dir,
 282             AS_HELP_STRING([--with-zlib-lib-dir=DIR],
 283                            [location of Zlib library binary]),,)
 284
 285 if test "x$enable_zlib" != "xno" ; then
 286
 287   if test "x$with_zlib_lib_dir" != "x" ; then
 288     LDFLAGS="-L$with_zlib_lib_dir $LDFLAGS"
 289   fi
 290
 291   AC_CHECK_LIB(z, inflateEnd, [zlib_lib=yes], [zlib_lib=no],)
 292   if test "$zlib_lib" = "no" -a "x$with_zlib_lib_dir" != "x"; then
 293     AC_MSG_ERROR([Zlib library not found at $with_zlib_lib_dir])
 294   fi
 295
 296   if test "x$with_zlib_include_dir" != "x" ; then
 297     CPPFLAGS="-I$with_zlib_include_dir $CPPFLAGS"
 298   fi
 299   AC_CHECK_HEADER(zlib.h, [zlib_h=yes], [zlib_h=no])
 300   if test "$zlib_h" = "no" -a "x$with_zlib_include_dir" != "x" ; then
 301     AC_MSG_ERROR([Zlib headers not found at $with_zlib_include_dir])
 302   fi
 303
 304   if test "$zlib_lib" = "yes" -a "$zlib_h" = "yes" ; then
 305     HAVE_ZLIB=yes
 306   fi
 307
 308 fi
 309
 310 if test "$HAVE_ZLIB" = "yes" ; then
 311   AC_DEFINE(ZIP_SUPPORT,1,[Support Deflate compression])
 312   LIBS="-lz $LIBS"
 313
 314   if test "$HAVE_RPATH" = "yes" -a "x$with_zlib_lib_dir" != "x" ; then
 315     LIBDIR="-R $with_zlib_lib_dir $LIBDIR"
 316   fi
 317
 318 fi
 319
 320 dnl ---------------------------------------------------------------------------
 321 dnl Check for Pixar log-format algorithm.
 322 dnl ---------------------------------------------------------------------------
 323
 324 AC_ARG_ENABLE(pixarlog,
 325               AS_HELP_STRING([--disable-pixarlog],
 326                              [disable support for Pixar log-format algorithm (requires Zlib)]),
 327               [HAVE_PIXARLOG=$enableval], [HAVE_PIXARLOG=yes])
 328
 329 if test "$HAVE_ZLIB" = "yes" -a "$HAVE_PIXARLOG" = "yes" ; then
 330   AC_DEFINE(PIXARLOG_SUPPORT, 1,
 331             [Support Pixar log-format algorithm (requires Zlib)])
 332 else
 333   HAVE_PIXARLOG=no
 334 fi
 335
 336 dnl ---------------------------------------------------------------------------
 337 dnl Check for JPEG.
 338 dnl ---------------------------------------------------------------------------
 339
 340 HAVE_JPEG=no
 341
 342 AC_ARG_ENABLE(jpeg,
 343               AS_HELP_STRING([--disable-jpeg],
 344                              [disable IJG JPEG library usage (required for JPEG compression, enabled by default)]),,)
 345 AC_ARG_WITH(jpeg-include-dir,
 346             AS_HELP_STRING([--with-jpeg-include-dir=DIR],
 347                            [location of IJG JPEG library headers]),,)
 348 AC_ARG_WITH(jpeg-lib-dir,
 349             AS_HELP_STRING([--with-jpeg-lib-dir=DIR],
 350                            [location of IJG JPEG library binary]),,)
 351
 352 if test "x$enable_jpeg" != "xno" ; then
 353
 354   if test "x$with_jpeg_lib_dir" != "x" ; then
 355     LDFLAGS="-L$with_jpeg_lib_dir $LDFLAGS"
 356
 357   fi
 358
 359   AC_CHECK_LIB(jpeg, jpeg_read_scanlines, [jpeg_lib=yes], [jpeg_lib=no],)
 360   if test "$jpeg_lib" = "no" -a "x$with_jpeg_lib_dir" != "x" ; then
 361     AC_MSG_ERROR([IJG JPEG library not found at $with_jpeg_lib_dir])
 362   fi
 363
 364   if test "x$with_jpeg_include_dir" != "x" ; then
 365     CPPFLAGS="-I$with_jpeg_include_dir $CPPFLAGS"
 366   fi
 367   AC_CHECK_HEADER(jpeglib.h, [jpeg_h=yes], [jpeg_h=no])
 368   if test "$jpeg_h" = "no" -a "x$with_jpeg_include_dir" != "x" ; then
 369     AC_MSG_ERROR([IJG JPEG library headers not found at $with_jpeg_include_dir])
 370   fi
 371
 372   if test "$jpeg_lib" = "yes" -a "$jpeg_h" = "yes" ; then
 373     HAVE_JPEG=yes
 374   fi
 375
 376 fi
 377
 378 if test "$HAVE_JPEG" = "yes" ; then
 379   AC_DEFINE(JPEG_SUPPORT,1,[Support JPEG compression (requires IJG JPEG library)])
 380   LIBS="-ljpeg $LIBS"
 381
 382   if test "$HAVE_RPATH" = "yes" -a "x$with_jpeg_lib_dir" != "x" ; then
 383     LIBDIR="-R $with_jpeg_lib_dir $LIBDIR"
 384   fi
 385
 386 fi
 387
 388 dnl ---------------------------------------------------------------------------
 389 dnl Check for Old JPEG.
 390 dnl ---------------------------------------------------------------------------
 391
 392 AC_ARG_ENABLE(old-jpeg,
 393               AS_HELP_STRING([--enable-old-jpeg],
 394                              [enable support for Old JPEG compresson (read contrib/ojpeg/README first! Compilation fails with unpatched IJG JPEG library)]),
 395               [HAVE_OJPEG=$enableval], [HAVE_OJPEG=no])
 396
 397 if test "$HAVE_JPEG" = "yes" -a "$HAVE_OJPEG" = "yes" ; then
 398   AC_DEFINE(OJPEG_SUPPORT, 1,
 399             [Support Old JPEG compresson (read contrib/ojpeg/README first! Compilation fails with unpatched IJG JPEG library)])
 400 else
 401   HAVE_OJPEG=no
 402 fi
 403
 404 dnl ---------------------------------------------------------------------------
 405 dnl Check for C++.
 406 dnl ---------------------------------------------------------------------------
 407
 408 AC_ARG_ENABLE(cxx,
 409               AS_HELP_STRING([--enable-cxx],
 410                              [enable C++ stream API building (requires C++ compiler)]),
 411               [HAVE_CXX=$enableval], [HAVE_CXX=yes])
 412
 413 if test "$HAVE_CXX" = "yes" ; then
 414   AC_DEFINE(CXX_SUPPORT, 1, [Support C++ stream API (requires C++ compiler)])
 415 else
 416   HAVE_CXX=no
 417 fi
 418
 419 AM_CONDITIONAL(HAVE_CXX, test "$HAVE_CXX" = "yes")
 420
 421 dnl ---------------------------------------------------------------------------
 422 dnl Check for OpenGL and GLUT.
 423 dnl ---------------------------------------------------------------------------
 424
 425 HAVE_OPENGL=no
 426
 427 AC_PATH_XTRA
 428
 429 AX_CHECK_GL
 430 AX_CHECK_GLU
 431 AX_CHECK_GLUT
 432
 433 if test "$no_x" != "yes" -a "$no_gl" != "yes" \
 434         -a "$no_glu" != "yes" -a "$no_glut" != "yes" ; then
 435   HAVE_OPENGL=yes
 436 fi
 437
 438 AM_CONDITIONAL(HAVE_OPENGL, test "$HAVE_OPENGL" = "yes")
 439
 440 dnl ===========================================================================
 441 dnl ``Orthogonal Features''
 442 dnl ===========================================================================
 443
 444 dnl ---------------------------------------------------------------------------
 445 dnl Default handling of strip chopping support.
 446 dnl ---------------------------------------------------------------------------
 447
 448 AC_ARG_ENABLE(strip-chopping,
 449               AS_HELP_STRING([--disable-strip-chopping],
 450                              [disable support for strip chopping (whether or not to convert single-strip uncompressed images to mutiple strips of specified size to reduce memory usage)]),
 451               [HAVE_STRIPCHOP=$enableval], [HAVE_STRIPCHOP=yes])
 452 AC_ARG_WITH(default-strip-size,
 453             AS_HELP_STRING([--with-default-strip-size=SIZE],
 454                            [default size of the strip in bytes (when strip chopping enabled) [[default=8192]]]),,)
 455
 456 if test "$HAVE_STRIPCHOP" = "yes" \
 457         -a "x$with_default_strip_size" != "xno"; then
 458   AC_DEFINE(STRIPCHOP_DEFAULT,TIFF_STRIPCHOP,[Support strip chopping (whether or not to convert single-strip uncompressed images to mutiple strips of specified size to reduce memory usage)])
 459
 460   if test "x$with_default_strip_size" = "x" \
 461           -o "x$with_default_strip_size" = "xyes"; then
 462     with_default_strip_size="8192"
 463   fi
 464
 465   AC_DEFINE_UNQUOTED(STRIP_SIZE_DEFAULT,$with_default_strip_size,[Default size of the strip in bytes (when strip chopping enabled)])
 466
 467 fi
 468
 469 dnl ---------------------------------------------------------------------------
 470 dnl Default subifd support.
 471 dnl ---------------------------------------------------------------------------
 472 AC_DEFINE(SUBIFD_SUPPORT,1,[Enable SubIFD tag (330) support])
 473
 474 dnl ---------------------------------------------------------------------------
 475 dnl Default handling of ASSOCALPHA support.
 476 dnl ---------------------------------------------------------------------------
 477
 478 AC_ARG_ENABLE(extrasample-as-alpha,
 479               AS_HELP_STRING([--disable-extrasample-as-alpha],
 480                              [the RGBA interface will treat a fourth sample with no EXTRASAMPLE_ value as being ASSOCALPHA. Many packages produce RGBA files but don't mark the alpha properly]),
 481               [HAVE_EXTRASAMPLE_AS_ALPHA=$enableval],
 482               [HAVE_EXTRASAMPLE_AS_ALPHA=yes])
 483
 484 if test "$HAVE_EXTRASAMPLE_AS_ALPHA" = "yes" ; then
 485   AC_DEFINE(DEFAULT_EXTRASAMPLE_AS_ALPHA, 1,
 486             [Treat extra sample as alpha (default enabled). The RGBA interface will treat a fourth sample with no EXTRASAMPLE_ value as being ASSOCALPHA. Many packages produce RGBA files but don't mark the alpha properly.])
 487 fi
 488
 489 dnl ---------------------------------------------------------------------------
 490 dnl Default handling of YCbCr subsampling support.
 491 dnl See Bug 168 in Bugzilla, and JPEGFixupTestSubsampling() for details.
 492 dnl ---------------------------------------------------------------------------
 493
 494 AC_ARG_ENABLE(check-ycbcr-subsampling,
 495               AS_HELP_STRING([--disable-check-ycbcr-subsampling],
 496                              [disable picking up YCbCr subsampling info from the JPEG data stream to support files lacking the tag]),
 497               [CHECK_JPEG_YCBCR_SUBSAMPLING=$enableval],
 498               [CHECK_JPEG_YCBCR_SUBSAMPLING=yes])
 499
 500 if test "$CHECK_JPEG_YCBCR_SUBSAMPLING" = "yes" ; then
 501   AC_DEFINE(CHECK_JPEG_YCBCR_SUBSAMPLING, 1,
 502             [Pick up YCbCr subsampling info from the JPEG data stream to support files lacking the tag (default enabled).])
 503 fi
 504
 505 dnl ---------------------------------------------------------------------------
 506
 507 AC_SUBST(LIBDIR)
 508
 509 AC_CONFIG_HEADERS([libtiff/tif_config.h libtiff/tiffconf.h])
 510
 511 AC_CONFIG_FILES([Makefile \
 512                  contrib/Makefile \
 513                  contrib/acorn/Makefile \
 514                  contrib/addtiffo/Makefile \
 515                  contrib/dbs/Makefile \
 516                  contrib/dbs/xtiff/Makefile \
 517                  contrib/iptcutil/Makefile \
 518                  contrib/mac-cw/Makefile \
 519                  contrib/mac-mpw/Makefile \
 520                  contrib/mfs/Makefile \
 521                  contrib/ojpeg/Makefile \
 522                  contrib/pds/Makefile \
 523                  contrib/ras/Makefile \
 524                  contrib/stream/Makefile \
 525                  contrib/tags/Makefile \
 526                  contrib/win_dib/Makefile \
 527                  html/Makefile \
 528                  html/images/Makefile \
 529                  html/man/Makefile \
 530                  libtiff/Makefile \
 531                  man/Makefile \
 532                  port/Makefile \
 533                  test/Makefile \
 534                  tools/Makefile])
 535 AC_OUTPUT
 536
 537 dnl ---------------------------------------------------------------------------
 538 dnl Display configuration status
 539 dnl ---------------------------------------------------------------------------
 540
 541 LOC_MSG()
 542 LOC_MSG([Libtiff is now configured for ${host}])
 543 LOC_MSG()
 544 LOC_MSG([  Installation directory:             ${prefix}])
 545 LOC_MSG([  Documentation directory:            ${LIBTIFF_DOCDIR}])
 546 LOC_MSG([  C compiler:                         ${CC} ${CFLAGS}])
 547 LOC_MSG([  C++ compiler:                       ${CXX} ${CXXFLAGS}])
 548 LOC_MSG([  Enable runtime linker paths:        ${HAVE_RPATH}])
 549 LOC_MSG([  Support Microsoft Document Imaging: ${HAVE_MDI}])
 550 LOC_MSG()
 551 LOC_MSG([ Support for internal codecs:])
 552 LOC_MSG([  CCITT Group 3 & 4 algorithms:       ${HAVE_CCITT}])
 553 LOC_MSG([  Macintosh PackBits algorithm:       ${HAVE_PACKBITS}])
 554 LOC_MSG([  LZW algorithm:                      ${HAVE_LZW}])
 555 LOC_MSG([  ThunderScan 4-bit RLE algorithm:    ${HAVE_THUNDER}])
 556 LOC_MSG([  NeXT 2-bit RLE algorithm:           ${HAVE_NEXT}])
 557 LOC_MSG([  LogLuv high dynamic range encoding: ${HAVE_LOGLUV}])
 558 LOC_MSG()
 559 LOC_MSG([ Support for external codecs:])
 560 LOC_MSG([  ZLIB support:                       ${HAVE_ZLIB}])
 561 LOC_MSG([  Pixar log-format algorithm:         ${HAVE_PIXARLOG}])
 562 LOC_MSG([  JPEG support:                       ${HAVE_JPEG}])
 563 LOC_MSG([  Old JPEG support:                   ${HAVE_OJPEG}])
 564 LOC_MSG()
 565 LOC_MSG([  C++ support:                        ${HAVE_CXX}])
 566 LOC_MSG()
 567 LOC_MSG([  OpenGL support:                     ${HAVE_OPENGL}])
 568 LOC_MSG()
 569