Hi Chris,
In your original Forum post you said that you had "libpng and pngwriter compiling". Now you say that you cannot get it to compile.
If you cannot get PNGwriter to compile, then please copy and paste the compiler output here so I can have a look at it.
If you have compiled PNGwriter, but cannot install it, please edit make.include and change the line that says
DESTDIR=/usr/local
to
DESTDIR=/nnn/xxx
where /nnn/xxx is wherever you want to put the library. One suggestion is:
DESTDIR=/home/youruser/usr/local
Then, add the compiler flags -L/home/youruser/usr/local/lib and -I/home/youruser/usr/local/include to the compilation arguments of whatever project you compile that uses PNGwriter, in addition to the arguments specified in the example in the PNGwriter Manual PDF.
If you have compiled PNGwriter, installed it, but cannot figure out what arguments to give g++ to compile your project, please read the Compilation section of the PNGwriter Manual PDF.
Here is a section taken from the Makefile in the examples/ directory of the PNGwriter package. It should tell you the basics of what you need to know about compiling something. Please note that this was written before PNGwriter became a library (mental note, must change this), but the basics of what it explainns are valid.
Just to clear things up, the recommended procedure to use PNGwriter is:
Compile and install libpngwriter, either system-wide, the default, or in a director you own.
Write your program, create a Makefile for it, and use the example compilation arguments given in the Manual. If you installed libpngwriter somewhere non-standard, then just add these compiler arguments as shown above.
Best of luck
Paul
# MAKEFILE BASICS
# What do the compiler flags that are used here mean?
#
# -O3 (dash-oh-three). Code optimization. 1 is slight, 3 is max.
#
# -o "What you output, output with this filename".
#
# -c Compile the code, but don't link. Think of this as the instruction given
# to a carpenter who has made the parts to make a chair. He is told with this
# flag that he must not glue the chair together yet. The seat of the chair is
# useless by itself, it needs to be glued to the other parts of the chair to
# be useful. -c will make an object file, and this is what we want to do with
# PNGwriter, by creating pngwriter.o. This is like making a leg of a chair
# (the whole chair is your entire program) and we'll leave it ready for when
# your chair is ready for gluing (compiling and linking the final program).
# The advantage of this approach is, that if you need to re-do a part of the
# chair, you dont have to make (compile) the legs of the chair all over again.
# You can even take the object file (pngwriter.o) once it is compiled and use
# it in another project (remember to take the pngwriter.h file as well!)
#
# -I (uppercase i). If you, like me, have a few header files installed in a
# non-standard place, then say where with this option.
#
# -L The same, but for libraries.
#
# -l (lowecase L). To use a library. For libpng, use -lpng. For Zlib, use
# -lz. For pngwriter, use -lpngwriter.
#
#
######################################################################## ###############
From: Chris Gagnon <[EMAIL PROTECTED]>
Compiling PNGWriter
2004-11-06 18:37
As requested, I will continue with a question I posted in the forums on this
list.
I am attempting to use the pngwritter and I cannot get it to compile.
I would guess that the reason I cannot is because I cannot actually install
the package.
I can get it to compile since libpng is installed on the server.
But due to permissions I can"t install it.
I"m not the greatest with Makefile"s and am looking for some help somehow
telling it where to find the library file correctly.
Please include what files I need where and as much information as you
can(within reason of course, so I can make sure I have it all setup right)
Thx,
Chris
------------------------------------------------------- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_idU88&alloc_id065&op=click _______________________________________________ http://pngwriter.sourceforge.net/ PNGwriter-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/pngwriter-users
