1 ================================================================
2 Copyright (c) 1999-2001 Arnar M. Hrafnkelsson. All rights reserved.
3 This program is free software; you can redistribute it and/or
4 modify it under the same terms as Perl itself.
5 ================================================================
7 >> THIS SOFTWARE COMES WITH ABSOLUTELY NO WARRANTY WHATSOEVER <<
8 If you like or hate Imager, please let us know at imager@perl.org!
10 ================================================================
13 ========================
14 1. Patent infringements?
15 ========================
17 Imager as such contains no patented algorithms. The external
18 libraries (which are not written by me) may or may not contain
19 patented algorithms. YOU ARE SOLELY RESPONSIBLE FOR OBTAINING
20 LICENSE(S) TO USE SUCH LIBRARIES SHOULD YOU NEED ANY.
23 ========================
24 2. Compiling and testing
25 ========================
27 Some care has been taken to make the installation as smooth as
28 possible. This is rather hard due to the difference between operating
29 systems and site setups. To get started just type
33 It should blurb out a list of which libraries were found and which
34 not. If you add a library to the machine after installing Imager it
35 does not automatically become available in Imager. It only uses the
36 libraries that are found. If the list of found libraries is not what
37 you expected, then the Makefile.PL is either not searching in the
38 right directories or your box does not have the libraries you think it
39 does. For a list of where to get the libraries have a look at
40 3. External dependencies. To widen the search path for libraries and
41 include files set the IM_INCPATH and IM_LIBPATH variables. The
42 environment variables that matter when Makefile.PL is run are
44 IM_INCPATH colon separated list of paths to extra include files
45 IM_LIBPATH colon separated list of paths to extra library files
47 IM_VERBOSE turns on verbose mode for the library scanning and such
48 IM_MANUAL to manually select which libraries are used and which not
49 IM_NOLOG if true logging will not be compiled into the module
50 IM_DEBUG_MALLOC if true malloc debugging will be compiled into the module
51 do not use IM_DEBUG_MALLOC in production - this slows
54 IM_CFLAGS Extra flags to pass to the compiler
55 IM_LFLAGS Extra flags to pass to the linker
56 IM_DFLAGS Extra flags to pass to the preprocessor
60 When finding the libraries has been sorted out it's time for
64 and if that works then do
68 If either fails do take a peek at the file errep.perl. It's creates a
69 file report.txt. This is some information which will help me discover
70 where the problem is so I can try to fix it in future releases. If
71 you find running it ok (just remember - no warranty!) please send the
72 report.txt via email to addi@umich.edu .
76 A common problem is that libgif/libungif are sometimes linked to the X
77 libraries and then running the tests fails. In that case something
80 $ IM_LFLAGS="-L/usr/X11R6/lib -lX11" perl Makefile.PL
82 Which simply sets the environment variables for the extra libraries
83 to include the X libraries (which we do not use at all, but must
84 included since libgif has been linked with it).
86 Also note that libgif has a few bugs: You can run something like
88 $ perl -Iblib/lib -Iblib/arch t/t105gif.t
90 This way you can see what comments the test script prints out.
91 t/t105gif.t checks for an bug in libgif and prints out a patch
92 if that bug is present, note that this bug only affects the more
93 "advanced" features of libgif.
95 If for some reason you have libungif-devel package installed but
96 not libungif on RedHat then you will probably get lots of errors
97 like undefined symbol: FreeSavedImages when running make test.
98 Install libungif package to fix it.
101 Imager needs to have a fairly recent libtiff installed (we know it
102 it runs fine with 3.5.5). In the future we might consider supporting older
103 libtiff versions. For now you can either configure Imager manually (by
104 setting the IM_MANUAL environment variable to 1, in sh:
106 $ IM_MANUAL=1 perl Makefile.PL
108 and simply say no to tiff support when asked if you want it, the same thing
109 can be used to circumvent problems in gifs to get Imager going.
112 If it worked just continue with the installation as normally
115 ========================
116 3. External dependencies
117 ========================
119 Some hints about getting the Imager module to find the libraries it
120 needs for specific features. The libraries it uses are:
122 jpeg: ftp://ftp.uu.net/graphics/jpeg/jpegsrc.v6b.tar.gz
124 png: ftp://ftp.uu.net/graphics/png
125 you also need zlib to use png: ftp://ftp.uu.net/pub/archiving/zip/zlib
126 We have encountered problems with libpng 1.0.1, which were fixed in 1.0.5
128 gif: http://www.arrakeen.demon.co.uk/giflib/
129 or at: http://prtr-13.ucsc.edu/~badger/software/libungif/index.shtml
131 tiff: http://www.libtiff.org/
133 t1: ftp://ftp.neuroinformatik.ruhr-uni-bochum.de/pub/software/t1lib/
134 or at: ftp://sunsite.unc.edu/pub/Linux/libs/graphics/
136 tt: http://www.freetype.org/
139 Precompiled versions of some of the libraries might be found at:
143 ftp://ftp.rge.com/pub/systems/aix/bull/
147 ========================
148 4. Logging and debugging
149 ========================
151 Logging is compiled in by default - if you should want to get of it
152 from the binaries you can do so by setting the env IMAGER_NOLOG
153 to something. If you want to enable malloc debugging to check for leaks
154 then set IMAGER_DEBUG_MALLOC to something. Needless to say it is
155 pretty pointless to have malloc debug enabled with no logging since you
156 can never see the malloc information that way.
159 ========================
160 5. Truetype information
161 ========================
163 If you enable the truetype part and want it to be TESTED you MUST set
164 the environment variable TTFONTTEST to a complete path to a truetype
172 Imager can be installed on Win32 systems. This was ported and tested
173 with Microsoft Visual C++ 6.0 with build 623 of ActivePerl. You can
174 use all of the features of Imager. You can also use Win32 GDI fonts
175 directly by supplying the 'face' parameter to Imager::Font->new(...).
177 I've tested with both MSVC++ 6.0 and cygwin (perl 5.6.1).
179 If you have any problems with the Win32 support, please email
180 tony@develop-help.com (don't forget to use nmake instead of make).
182 =======================
183 7. General information
184 =======================
186 The Imager module homepage is currently at:
188 http://www.eecs.umich.edu/~addi/perl/Imager/
190 The current docs are rather bad as I've been busy adding features
191 but hopefully they will be updated soon. Until then you'll just
192 have to use the source. The test scripts might also be a good idea.
193 By activating the the #init_log lines in the test script you can get
194 rather verbose debugging output from the C code.
197 ========================
199 ========================
203 Claes Jacobson ( Claes )
204 Philip Gwyn ( Leolo )
205 Michael Slade ( Micksa )
206 Brad Murray ( HalfJack )
207 Nicholas Dronen ( Veblen )
208 Michael G Schwern ( Schwern )
209 Rocco Caputo ( Dngor )
210 Graham barr ( Gbarr )
211 Mark-Jason Dominus ( Mjd )
213 Jason Alexander ( Jalex )
214 Randal R. Schwartz ( Merlyn )
216 Artur Bergman ( Sky )
217 Luc St-Louis ( Lucs )
219 Roderick Schertler ( Roderick )
220 Nathan Torkington ( gnat )
222 (and just to play it safe) all those I forgot to mention.