Commit 752ead61 authored by Jason Rumney's avatar Jason Rumney

More image notes.

parent 5d54d177
......@@ -77,18 +77,22 @@
* Optional image library support
To build Emacs with support for PNG image, the libpng and zlib
To build Emacs with support for PNG images, the libpng and zlib
headers must be in the include path when the configure script is
run. Likewise, the jpeg headers must be in the include path for
JPEG support. This can be setup using environment variables, or by
run. This can be setup using environment variables, or by
specifying --cflags -I... options on the command-line to
configure.bat. The configure script will report whether it was able
to detect the headers.
configure.bat. Similarly, the jpeg-6b, libXpm, tiff and libungif
headers need to be in the include path for support for those image
formats to work. The configure script will report whether it was
able to detect the headers.
To use the PNG support, zlib.dll (or zlibd.dll) and libpng.dll (or
libpng13.dll, or libpng13d.dll) must be on the PATH or in the same
directory as emacs.exe when Emacs is started. For JPEG support,
jpeg.dll must be on the path or emacs.exe directory.
directory as emacs.exe when Emacs is started. Similar instructions
apply for other image libraries. Note that tiff support depends on
the jpeg library. If you did not compile the libraries yourself, you
must make sure that the jpeg library you install is the same one
that the tiff library was compiled against.
* Building
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