Commit 290682ef authored by Jason Rumney's avatar Jason Rumney

Added notes for JPEG library.

parent 28908312
......@@ -927,10 +927,12 @@ See the Emacs 21.1 NEWS entry for tooltips for details.
---
** Some images are now supported on MS Windows.
PBM and XBM images are supported, PNG is supported if the libpng
and zlib headers were available when Emacs was built, and libpng
and zlib DLLs are available at run-time. Other formats which require
external libraries may be similarly supported in future.
PBM and XBM images are supported, PNG is supported if the libpng and
zlib headers were available when Emacs was built, and libpng and zlib
DLLs are available at run-time. Likewise, JPEG is supported if the
jpeg headers were available when Emacs was built, and jpeg.dll is
available at run-time. Other formats which require external
libraries may be similarly supported in future.
---
** Sound is now supported on MS Windows.
......
......@@ -77,15 +77,18 @@
* Optional image library support
To build Emacs with support for PNG image, the libpng and zlib headers
must be in the include path when the configure script is run. This can
be setup using environment variables, or by specifying --cflags -I...
options on the command-line to configure. The configure script will
report whether it was able to detect the headers.
To build Emacs with support for PNG image, 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
specifying --cflags -I... options on the command-line to
configure.bat. 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.
directory as emacs.exe when Emacs is started. For JPEG support,
jpeg.dll must be on the path or emacs.exe directory.
* Building
......
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