Hello, This package's test suite sometimes fail; here's the test output for the failed test:
--8<---------------cut here---------------start------------->8--- //////////////////////////////////////////////// //////////////// ioformats_reg /////////////// //////////////////////////////////////////////// leptonica-1.83.1 : libgif 5.2.1 : libjpeg 6b (libjpeg-turbo 2.1.4) : libpng 1.6.37 : libtiff 4.4.0 : zlib 1.2.13 : libwebp 1.2.4 : libopenjp2 2.5.0 Test bmp 1 bpp file: Info in pixReadMemBmp: removing opaque cmap from 1 bpp Info in ioFormatTest: write/read bmp Info in pixReadMemBmp: removing opaque cmap from 1 bpp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read g4 compressed tiff Info in ioFormatTest: write/read g3 compressed tiff Info in ioFormatTest: write/read rle compressed tiff Info in ioFormatTest: write/read packbits compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found diff = 1.789 Info in ioFormatTest: All formats read and written OK! Test other 1 bpp file: Info in ioFormatTest: write/read bmp Info in pixReadMemBmp: removing opaque cmap from 1 bpp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read g4 compressed tiff Info in ioFormatTest: write/read g3 compressed tiff Info in ioFormatTest: write/read rle compressed tiff Info in ioFormatTest: write/read packbits compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found diff = 1.632 Info in ioFormatTest: All formats read and written OK! Test 2 bpp file: Info in ioFormatTest: write/read bmp Warning in pixWriteMemBmp: 2 bpp files can't be read; converting to 8 bpp Error in findFileFormatStream: truncated file Error in pixReadStream: Unknown format: no pix returned Error in pixRead: pix not read Error in pixEqualWithAlpha: pix1 and pix2 not both defined Info in ioFormatTest: **** bad bmp image: d = 2 **** Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found diff = 1.608 Test 2 bpp file with cmap: Info in ioFormatTest: write/read bmp Warning in pixWriteMemBmp: 2 bpp files can't be read; converting to 8 bpp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found diff = 2.770 Info in ioFormatTest: All formats read and written OK! Test 4 bpp file: Info in ioFormatTest: write/read bmp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found diff = 1.841 Info in ioFormatTest: All formats read and written OK! Test 4 bpp file with cmap: Info in ioFormatTest: write/read bmp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found diff = 3.486 Info in ioFormatTest: All formats read and written OK! Test 8 bpp grayscale file with cmap: Info in ioFormatTest: write/read bmp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in cmapEqual: colormap sizes are different Info in ioFormatTest: write/read lzw compressed tiff Info in cmapEqual: colormap sizes are different Info in ioFormatTest: write/read zip compressed tiff Info in cmapEqual: colormap sizes are different Info in ioFormatTest: write/read jpeg compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in cmapEqual: colormap sizes are different Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found diff = 2.535 Info in ioFormatTest: All formats read and written OK! Test 8 bpp color file with cmap: Info in ioFormatTest: write/read bmp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in cmapEqual: colormap sizes are different Info in ioFormatTest: write/read lzw compressed tiff Info in cmapEqual: colormap sizes are different Info in ioFormatTest: write/read zip compressed tiff Info in cmapEqual: colormap sizes are different Info in ioFormatTest: write/read jpeg compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in cmapEqual: colormap sizes are different Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found Error in pixReadStreamJp2k: failed to read the header Error in pixReadStream: jp2: no pix returned Error in pixRead: pix not read Error in pixCompareRGB: pix2 not defined or not ew bpp diff = 0.000 Info in ioFormatTest: All formats read and written OK! Test 8 bpp file without cmap: Info in ioFormatTest: write/read bmp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read jpeg compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found diff = 3.395 Info in ioFormatTest: All formats read and written OK! Test 16 bpp file: Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found Error in pixReadStreamJp2k: failed to read the header Error in pixReadStream: jp2: no pix returned Error in pixRead: pix not read Error in pixCompareRGB: pix2 not defined or not ew bpp diff = 0.000 Info in ioFormatTest: All formats read and written OK! Test 32 bpp files: Info in ioFormatTest: write/read bmp Info in ioFormatTest: write/read png Info in pixEqualWithAlpha: no colormaps, pix depths unequal, and one of them is RGB Info in ioFormatTest: **** bad png image: d = 32 **** Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read jpeg compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found diff = 3.773 Info in ioFormatTest: write/read bmp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read jpeg compressed tiff Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read webp Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found Info in pixCompareRGB: Images are pixel-wise identical diff = 0.000 Info in ioFormatTest: All formats read and written OK! Test spp = 1, bpp = 1, cmap with alpha file: Info in pixReadStreamPng: converting (cmap + alpha) ==> RGBA Info in pixReadStreamPng: converting 1 bpp cmap with alpha ==> RGBA Info in ioFormatTest: write/read bmp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read jpeg compressed tiff Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in ioFormatTest: write/read webp Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found Error in pixReadStreamJp2k: failed to read the header Error in pixReadStream: jp2: no pix returned Error in pixRead: pix not read Error in pixCompareRGB: pix2 not defined or not ew bpp diff = 0.000 Info in ioFormatTest: All formats read and written OK! Test spp = 1, bpp = 8, cmap with alpha file: Info in pixReadStreamPng: converting (cmap + alpha) ==> RGBA Info in pixReadStreamPng: converting 8 bpp cmap with alpha ==> RGBA Info in ioFormatTest: write/read bmp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read jpeg compressed tiff Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read webp Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found Info in pixCompareRGB: Images are pixel-wise identical diff = 0.000 Info in ioFormatTest: All formats read and written OK! Test spp = 1, fully transparent with alpha file: Info in pixReadStreamPng: transparency, 1 spp, no colormap, no transparency array: convention is fully transparent image Info in pixReadStreamPng: converting (fully transparent 1 spp) ==> RGBA Info in ioFormatTest: write/read bmp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read jpeg compressed tiff Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read pnm Error in pixReadStreamPnm: read error type 6 Error in pixReadStream: pnm: no pix returned Error in pixRead: pix not read Error in pixEqualWithAlpha: pix1 and pix2 not both defined Info in ioFormatTest: **** bad pnm image: d = 32 **** Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read webp Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found Info in pixCompareRGB: Images are pixel-wise identical diff = 0.000 Test spp = 2, gray with alpha file: Info in pixReadStreamPng: converting (gray + alpha) ==> RGBA Info in ioFormatTest: write/read bmp Info in ioFormatTest: write/read png Info in ioFormatTest: write/read uncompressed tiff Info in ioFormatTest: write/read lzw compressed tiff Info in ioFormatTest: write/read zip compressed tiff Info in ioFormatTest: write/read jpeg compressed tiff Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read pnm Info in ioFormatTest: write/read gif Info in ioFormatTest: write/read jpeg Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read webp Info in pixCompareRGB: Images are pixel-wise identical Info in ioFormatTest: write/read jp2k Warning in fgetJp2kResolution: image resolution not found Info in pixCompareRGB: Images are pixel-wise identical diff = 0.000 Info in ioFormatTest: All formats read and written OK! ******* Failure on at least one i/o format test ****** --8<---------------cut here---------------end--------------->8--- I'm not sure from the above output what is wrong exactly. To be investigated. -- Thanks, Maxim