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authorDave Love <fx@gnu.org>2000-11-21 14:32:05 +0000
committerDave Love <fx@gnu.org>2000-11-21 14:32:05 +0000
commit4a9359ebcd23860cdee4c52352029f2215a4ef5b (patch)
tree00f0173c70513cfa32b4b0b1c8359e3ab537a2dd
parent18a7798993ef20300fae61f5381093ee35be6fc2 (diff)
downloademacs-4a9359ebcd23860cdee4c52352029f2215a4ef5b.tar.gz
Modify stuff about image libraries.
-rw-r--r--INSTALL41
1 files changed, 25 insertions, 16 deletions
diff --git a/INSTALL b/INSTALL
index f35791e6994..e537a418dea 100644
--- a/INSTALL
+++ b/INSTALL
@@ -76,19 +76,27 @@ that file `dir' in this directory contains an entry like this:
* Image support libraries
Emacs needs optional libraries to be able to display images (with the
-exception of PBM images whose support is built-in). Here's the list
-of these optional libraries, and the URLs where they can be found:
+exception of PBM and XBM images whose support is built-in). On some
+systems these may already be present or available as additional
+packages, particularly on GNU/Linux. (In some cases older versions
+won't work because some routines are missing, and configure should
+avoid such old versions.)
+
+If necessary, you can build them from source. None are vital for
+running Emacs. Here's the list of these optional libraries, and the
+URLs where they can be found:
. libxpm for XPM: ftp://ftp.x.org/contrib/libraries/
. libpng for PNG: ftp://www.libpng.org/pub/png/
- . Zlib (for PNG): http://www.info-zip.org/pub/infozip/zlib/
+ . libz (for PNG): http://www.info-zip.org/pub/infozip/zlib/
. libjpeg for JPEG: ftp://ftp.uu.net/graphics/jpeg/
. libtiff for TIFF: http://www.libtiff.org/
. libungif for GIF:
http://prtr-13.ucsc.edu/~badger/software/libungif/index.shtml
-Emacs needs to be configured with the appropriate --with-LIB option,
-to be built with these libraries. See below for more details.
+Emacs will configure itself to build with these libraries if configure
+finds them on your system unless you supply the appropriate
+--without-LIB option. See below for more details.
BUILDING AND INSTALLATION:
@@ -163,19 +171,20 @@ add `--with-hesiod'. These options enable Emacs to use POP; whether
Emacs uses POP is controlled by individual users--see the Rmail
chapter of the Emacs manual.
-To get Emacs with image support, configure with one or more of these
-options:
+For image support you may have to download, build, and install the
+appropriate image support libraries for image types other than XBM and
+PBM, see the list of URLs in "ADDITIONAL DISTRIBUTION FILES" above.
+(Note that PNG support requires libz in addition to libpng.)
- --with-xpm for XPM image support
- --with-jpeg for JPEG image support
- --with-tiff for TIFF image support
- --with-gif for GIF image support
- --with-png for PNG image support
+To disable individual types of image support in Emacs for some reason,
+even though configure finds the libraries, you can configure with one
+or more of these options:
-You will have to download, build, and install the appropriate image
-support libraries, see the list of URLs in "ADDITIONAL DISTRIBUTION
-FILES" above. (Note that configuring --with-png requires Zlib in
-addition to libpng.)
+ --without-xpm for XPM image support
+ --without-jpeg for JPEG image support
+ --without-tiff for TIFF image support
+ --without-gif for GIF image support
+ --without-png for PNG image support
The `--prefix=PREFIXDIR' option specifies where the installation process
should put emacs and its data files. This defaults to `/usr/local'.