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update README

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John Cupitt 2015-07-10 12:44:02 +01:00
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@ -139,8 +139,8 @@ libraries automatically. See `./configure --help` for a set of flags to
control library detection. Packages are generally found with `pkg-config`,
so make sure that is working.
libtiff and libjpeg do not usually use pkg-config so libvips looks for
them in the default path and in $prefix. If you have installed your own
libtiff and libjpeg do not usually use `pkg-config` so libvips looks for
them in the default path and in `$prefix`. If you have installed your own
versions of these libraries in a different location, libvips will not see
them. Use switches to libvips configure like:
@ -158,88 +158,87 @@ or perhaps:
to get libvips to see your builds.
## vips8 Python binding
### vips8 Python binding
If `gobject-introspection`, `python-gi-dev`, and `libgirepository1.0-dev` are
available, libvips will install the vips8 Python binding.
## libjpeg
### libjpeg
The IJG JPEG library.
The IJG JPEG library. Use the `-turbo` version if you can.
## libexif
### libexif
If available, libvips adds support for EXIF metadata in JPEG files.
## libgsf-1
### libgsf-1
If available, libvips adds support for creating image pyramids with dzsave.
If available, libvips adds support for creating image pyramids with `dzsave`.
## libtiff
### libtiff
The TIFF library. It needs to be built with support for JPEG and
ZIP compression. 3.4b037 and later are known to be OK.
## fftw3
### fftw3
If libvips finds this library, it uses it for fourier transforms. It
can also use fftw2, but 3 is faster and more accurate.
If libvips finds this library, it uses it for fourier transforms.
## lcms2, lcms
### lcms2, lcms
If present, vips_icc_import(), vips_icc_export() and vips_icc_transform() are
available for transforming images with ICC profiles. If lcms2 is available,
it is used in preference to lcms, since it is faster.
If present, `vips_icc_import()`, `vips_icc_export()` and `vips_icc_transform()`
are available for transforming images with ICC profiles. If `lcms2` is
available it is used in preference to `lcms`, since it is faster.
## Large files
### Large files
libvips uses the standard autoconf tests to work out how to support
large files (>2GB) on your system. Any reasonably recent unix should
be OK.
## libpng
### libpng
If present, libvips can load and save png files.
## libMagick, or optionally GraphicsMagick
### ImageMagick, or optionally GraphicsMagick
if available, libvips adds support for loading all libMagick supported
image file types (about 80 different formats). Use
`--with-magickpackage` to build against graphicsmagick instead.
If available, libvips adds support for loading all libMagick-supported
image file types. Use `--with-magickpackage=GraphicsMagick` to build against
graphicsmagick instead.
## pangoft2
### pangoft2
If available, libvips adds support for text rendering. You need the
package pangoft2 in `pkg-config --list-all`.
## orc-0.4
### orc-0.4
If available, vips will accelerate some operations with this run-time
compiler.
## matio
### matio
If available, vips can load images from Matlab save files.
## cfitsio
### cfitsio
If available, vips can load FITS images.
## libwebp
### libwebp
If available, vips can load and save WebP images.
## OpenEXR
### OpenEXR
If available, libvips will directly read (but not write, sadly)
OpenEXR images.
## OpenSlide
### OpenSlide
If available, libvips can load OpenSlide-supported virtual slide
files: Aperio, Hamamatsu, Leica, MIRAX, Sakura, Trestle, and Ventana.
## swig, python, python-dev
### swig, python, python-dev
If available, we build the vips7 python binding.