m4/wm_imgfmt_check.m4

   1 # wm_imgfmt_check.m4 - Macros to check for image file format support libraries
   2 #
   3 # Copyright (c) 2013 Christophe CURIS
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License along
  16 # with this program; if not, write to the Free Software Foundation, Inc.,
  17 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19 # WM_IMGFMT_CHECK_GIF
  20 # -------------------
  21 #
  22 # Check for GIF file support through 'libgif', 'libungif' or 'giflib v5'
  23 # The check depends on variable 'enable_gif' being either:
  24 #   yes  - detect, fail if not found
  25 #   no   - do not detect, disable support
  26 #   auto - detect, disable if not found
  27 #
  28 # When found, append appropriate stuff in GFXLIBS, and append info to
  29 # the variable 'supported_gfx'
  30 # When not found, append info to variable 'unsupported'
  31 AC_DEFUN_ONCE([WM_IMGFMT_CHECK_GIF],
  32 [AC_REQUIRE([_WM_LIB_CHECK_FUNCTS])
  33 AS_IF([test "x$enable_gif" = "xno"],
  34     [unsupported="$unsupported GIF"],
  35     [AC_CACHE_CHECK([for GIF support library], [wm_cv_imgfmt_gif],
  36         [wm_cv_imgfmt_gif=no
  37          wm_save_LIBS="$LIBS"
  38          dnl
  39          dnl We check first if one of the known libraries is available
  40          for wm_arg in "-lgif" "-lungif" ; do
  41            AS_IF([wm_fn_lib_try_link "DGifOpenFileName" "$XLFLAGS $XLIBS $wm_arg"],
  42              [wm_cv_imgfmt_gif="$wm_arg" ; break])
  43          done
  44          LIBS="$wm_save_LIBS"
  45          AS_IF([test "x$enable_gif$wm_cv_imgfmt_gif" = "xyesno"],
  46            [AC_MSG_ERROR([explicit GIF support requested but no library found])])
  47          AS_IF([test "x$wm_cv_imgfmt_gif" != "xno"],
  48            [dnl
  49             dnl A library was found, now check for the appropriate header
  50             wm_save_CFLAGS="$CFLAGS"
  51             AS_IF([wm_fn_lib_try_compile "gif_lib.h" "" "return 0" ""],
  52               [],
  53               [AC_MSG_ERROR([found $wm_cv_imgfmt_gif but could not find appropriate header - are you missing libgif-dev package?])])
  54             AS_IF([wm_fn_lib_try_compile "gif_lib.h" 'const char *filename = "dummy";' "DGifOpenFileName(filename)" ""],
  55               [wm_cv_imgfmt_gif="$wm_cv_imgfmt_gif version:4"],
  56               [AC_COMPILE_IFELSE(
  57                 [AC_LANG_PROGRAM(
  58                   [@%:@include <gif_lib.h>
  59
  60 const char *filename = "dummy";],
  61                   [  int error_code;
  62   DGifOpenFileName(filename, &error_code);] )],
  63                 [wm_cv_imgfmt_gif="$wm_cv_imgfmt_gif version:5"],
  64                 [AC_MSG_ERROR([found $wm_cv_imgfmt_gif and header, but cannot compile - unsupported version?])])dnl
  65               ]
  66             )
  67             CFLAGS="$wm_save_CFLAGS"])
  68          ])
  69     AS_IF([test "x$wm_cv_imgfmt_gif" = "xno"],
  70         [unsupported="$unsupported GIF"
  71          enable_gif="no"],
  72         [supported_gfx="$supported_gfx GIF"
  73          WM_APPEND_ONCE([`echo "$wm_cv_imgfmt_gif" | sed -e 's, *version:.*,,' `], [GFXLIBS])
  74          AC_DEFINE_UNQUOTED([USE_GIF],
  75            [`echo "$wm_cv_imgfmt_gif" | sed -e 's,.*version:,,' `],
  76            [defined when valid GIF library with header was found])])
  77     ])
  78 AM_CONDITIONAL([USE_GIF], [test "x$enable_gif" != "xno"])dnl
  79 ]) dnl AC_DEFUN
  80
  81
  82 # WM_IMGFMT_CHECK_JPEG
  83 # --------------------
  84 #
  85 # Check for JPEG file support through 'libjpeg'
  86 # The check depends on variable 'enable_jpeg' being either:
  87 #   yes  - detect, fail if not found
  88 #   no   - do not detect, disable support
  89 #   auto - detect, disable if not found
  90 #
  91 # When found, append appropriate stuff in GFXLIBS, and append info to
  92 # the variable 'supported_gfx'
  93 # When not found, append info to variable 'unsupported'
  94 AC_DEFUN_ONCE([WM_IMGFMT_CHECK_JPEG],
  95 [WM_LIB_CHECK([JPEG], [-ljpeg], [jpeg_destroy_compress], [$XLFLAGS $XLIBS],
  96     [AC_COMPILE_IFELSE(
  97                 [AC_LANG_PROGRAM(
  98                     [@%:@include <stdlib.h>
  99 @%:@include <stdio.h>
 100 @%:@include <jpeglib.h>],
 101                     [  struct jpeg_decompress_struct cinfo;
 102
 103   jpeg_destroy_decompress(&cinfo);])],
 104                 [],
 105                 [AS_ECHO([failed])
 106                  AS_ECHO(["$as_me: error: found $CACHEVAR but cannot compile header"])
 107                  AS_ECHO(["$as_me: error:   - does header 'jpeglib.h' exists? (is package 'jpeg-dev' missing?)"])
 108                  AS_ECHO(["$as_me: error:   - version of header is not supported? (report to dev team)"])
 109                  AC_MSG_ERROR([JPEG library is not usable, cannot continue])])
 110            ],
 111     [supported_gfx], [GFXLIBS])dnl
 112 ]) dnl AC_DEFUN
 113
 114
 115 # WM_IMGFMT_CHECK_PNG
 116 # -------------------
 117 #
 118 # Check for PNG file support through 'libpng'
 119 # The check depends on variable 'enable_png' being either:
 120 #   yes  - detect, fail if not found
 121 #   no   - do not detect, disable support
 122 #   auto - detect, disable if not found
 123 #
 124 # When found, append appropriate stuff in GFXLIBS, and append info to
 125 # the variable 'supported_gfx'
 126 # When not found, append info to variable 'unsupported'
 127 AC_DEFUN_ONCE([WM_IMGFMT_CHECK_PNG],
 128 [WM_LIB_CHECK([PNG], ["-lpng" "-lpng -lz" "-lpng -lz -lm"], [png_get_valid], [$XLFLAGS $XLIBS],
 129     [wm_save_CFLAGS="$CFLAGS"
 130      AS_IF([wm_fn_lib_try_compile "png.h" "" "return 0" ""],
 131          [],
 132          [AC_MSG_ERROR([found $CACHEVAR but could not find appropriate header - are you missing libpng-dev package?])])
 133      AS_IF([wm_fn_lib_try_compile "png.h" "" "png_get_valid(NULL, NULL, PNG_INFO_tRNS)" ""],
 134          [],
 135          [AC_MSG_ERROR([found $CACHEVAR and header, but cannot compile - unsupported version?])])
 136      CFLAGS="$wm_save_CFLAGS"],
 137     [supported_gfx], [GFXLIBS])dnl
 138 ]) dnl AC_DEFUN
 139
 140
 141 # WM_IMGFMT_CHECK_TIFF
 142 # --------------------
 143 #
 144 # Check for TIFF file support through 'libtiff'
 145 # The check depends on variable 'enable_tiff' being either:
 146 #   yes  - detect, fail if not found
 147 #   no   - do not detect, disable support
 148 #   auto - detect, disable if not found
 149 #
 150 # When found, append appropriate stuff in GFXLIBS, and append info to
 151 # the variable 'supported_gfx'
 152 # When not found, append info to variable 'unsupported'
 153 AC_DEFUN_ONCE([WM_IMGFMT_CHECK_TIFF],
 154 [WM_LIB_CHECK([TIFF],
 155     ["-ltiff"  \
 156      dnl TIFF can have a dependancy over zlib
 157      "-ltiff -lz" "-ltiff -lz -lm"  \
 158      dnl It may also have a dependancy to jpeg_lib
 159      "-ltiff -ljpeg" "-ltiff -ljpeg -lz" "-ltiff -ljpeg -lz -lm"  \
 160      dnl There is also a possible dependancy on JBIGKit
 161      "-ltiff -ljpeg -ljbig -lz"  \
 162      dnl Probably for historical reasons?
 163      "-ltiff34" "-ltiff34 -ljpeg" "-ltiff34 -ljpeg -lm"],
 164     [TIFFGetVersion], [$XLFLAGS $XLIBS],
 165     [wm_save_CFLAGS="$CFLAGS"
 166      AS_IF([wm_fn_lib_try_compile "tiffio.h" "" "return 0" ""],
 167          [],
 168          [AC_MSG_ERROR([found $CACHEVAR but could not find appropriate header - are you missing libtiff-dev package?])])
 169      AS_IF([wm_fn_lib_try_compile "tiffio.h" 'const char *filename = "dummy";' 'TIFFOpen(filename, "r")' ""],
 170          [],
 171          [AC_MSG_ERROR([found $CACHEVAR and header, but cannot compile - unsupported version?])])
 172      CFLAGS="$wm_save_CFLAGS"],
 173     [supported_gfx], [GFXLIBS])dnl
 174 ]) dnl AC_DEFUN
 175
 176
 177 # WM_IMGFMT_CHECK_XPM
 178 # -------------------
 179 #
 180 # Check for XPM file support through 'libXpm'
 181 # The check depends on variable 'enable_xpm' being either:
 182 #   yes  - detect, fail if not found
 183 #   no   - do not detect, use internal support
 184 #   auto - detect, use internal if not found
 185 #
 186 # When found, append appropriate stuff in GFXLIBS, and append info to
 187 # the variable 'supported_gfx'
 188 AC_DEFUN_ONCE([WM_IMGFMT_CHECK_XPM],
 189 [AC_REQUIRE([_WM_LIB_CHECK_FUNCTS])
 190 AS_IF([test "x$enable_xpm" = "xno"],
 191     [supported_gfx="$supported_gfx builtin-XPM"],
 192     [AC_CACHE_CHECK([for XPM support library], [wm_cv_imgfmt_xpm],
 193         [wm_cv_imgfmt_xpm=no
 194          dnl
 195          dnl We check first if one of the known libraries is available
 196          wm_save_LIBS="$LIBS"
 197          AS_IF([wm_fn_lib_try_link "XpmCreatePixmapFromData" "$XLFLAGS $XLIBS -lXpm"],
 198            [wm_cv_imgfmt_xpm="-lXpm" ; break])
 199          LIBS="$wm_save_LIBS"
 200          AS_IF([test "x$enable_xpm$wm_cv_imgfmt_xpm" = "xyesno"],
 201            [AC_MSG_ERROR([explicit libXpm support requested but no library found])])
 202          AS_IF([test "x$wm_cv_imgfmt_xpm" != "xno"],
 203            [dnl
 204             dnl A library was found, now check for the appropriate header
 205             wm_save_CFLAGS="$CFLAGS"
 206             AS_IF([wm_fn_lib_try_compile "X11/xpm.h" "" "return 0" "$XCFLAGS"],
 207               [],
 208               [AC_MSG_ERROR([found $wm_cv_imgfmt_xpm but could not find appropriate header - are you missing libXpm-dev package?])])
 209             AS_IF([wm_fn_lib_try_compile "X11/xpm.h" 'char *filename = "dummy";' 'XpmReadFileToXpmImage(filename, NULL, NULL)' "$XCFLAGS"],
 210               [],
 211               [AC_MSG_ERROR([found $wm_cv_imgfmt_xpm and header, but cannot compile - unsupported version?])])
 212             CFLAGS="$wm_save_CFLAGS"])
 213          ])
 214     AS_IF([test "x$wm_cv_imgfmt_xpm" = "xno"],
 215         [supported_gfx="$supported_gfx builtin-XPM"
 216          enable_xpm="no"],
 217         [supported_gfx="$supported_gfx XPM"
 218          WM_APPEND_ONCE([$wm_cv_imgfmt_xpm], [GFXLIBS])
 219          AC_DEFINE([USE_XPM], [1],
 220            [defined when valid XPM library with header was found])])
 221     ])
 222 AM_CONDITIONAL([USE_XPM], [test "x$enable_xpm" != "xno"])dnl
 223 ]) dnl AC_DEFUN