The qDecoder Project

qDecoder Installation Guide

Step 1. Getting qDecoder Package

The latest version of qDecoder can be downloaded from / or

To get working current : svn co svn:// qdecoder

Step 2. Unpacking qDecoder Package

Basically, qDecoder is provided being compressed with tar on Unix. Follow the below procedure to decompress it.

$ uncompress qDecoder-VERSION.tar.Z $ tar xvf qDecoder-VERSION.tar

On a system installed with GNU TAR, it can be decompressed at once as follows:

$ tar xvfZ qDecoder-VERSION.tar.Z

A directory corresponding to qDecoder-VERSION is created. And the package is unpacked like the following:

$ cd qDecoder-VERSION $ ls -asCF 1 ./ 3 6 install-sh* 1 ../ 7 README 2 qDecoder.jpg 1 AUTHORS 48 REFERENCE 1 rfc/ 9 CHANGES 55 configure* 1 src/ 26 COPYING 3 1 win32/ 2 DISCLAIMER 1 contrib/ 12 INSTALL 1 examples/ 4 ./ 4 4 doc/ 4 qDecoder.jpg 4 ../ 32 config.sub* 4 examples/ 8 README 4 AUTHORS 164 configure* 16 INSTALL 4 REFERENCE 16 CHANGES 8 16 install-sh* 4 src/ 44 config.guess* 8 COPYING 4 4 .svn/ AUTHORS – List of manufacturers’ names CHANGES – Changes of each version COPYING – Copyright-related documents INSTALL – Installation guide README – General guide REFERENCE – Manual on how to use functions qDecoder.jpg – Logotype picture –+ configure + + install-sh +–> Autoconf-related files config.guess + config.sub + –+ doc/… – Documentations examples/… – Collection of example sources. src/… – qDecoder main sources.

Step 3. Compile

qDecoder makes the compilation between different platforms more convenient by applying Autoconf (6.0.1 and above) which almost all the GNU software and free/open source software adopt. The compilation method is, like that of general open sources, through “make” after configuration, which checks to see if the compiler environment, needed functions and commands of the pertinent system can be used, and then constructs Makefile for them to be compiled in the system most efficiently.

$ cd qDecoder-VERSION $ ./configure -h (…some messages…) Optional Features: –enable-FEATURE[=ARG] include FEATURE [ARG=yes] –enable-debug enable debugging print out –enable-64bit enable 64 bit supports –enable-sendfile enable sendfile if possible –enable-mysql=/MYSQL_INCLUDE_DIR_PATH/ enable MySQL database supports –disable-cgisupport disable CGI(web application) related APIs (influence on: qCgiRequest.c, qCgiResponse.c, qSession.c, qHtml.c) –disable-socket disable socket APIs (influence on: qSocket.c) –disable-ipc disable IPC APIs (influence on: qSem.c, qShm.c) –disable-datastructure disable data structure APIs (influence on: qHashtbl.c, qHasharr.c, qObstack.c) $ ./configure creating cache ./config.cache checking for gcc… gcc checking whether the C compiler (gcc ) works… yes checking whether the C compiler (gcc ) is a cross-compiler… no …(skip)… creating Makefile creating src/Makefile creating examples/Makefile creating contrib/qValue-1.0.1/Makefile creating contrib/qcValue-1.0/Makefile $ ls -asCF (We can note that Makefile is created.) 4 ./ 4 8 COPYING 4 4 ../ 16 config.log 4 doc/ 4 qDecoder.jpg 4 AUTHORS 24 config.status* 4 examples/ 8 README 16 CHANGES 32 config.sub* 16 INSTALL 4 REFERENCE 44 config.guess* 164 configure* 16 install-sh* 4 src/ 4 config.h 8 4 Makefile 4 .svn/ $ make …(omission)…

NOTE) In case of Solaris, it is often the case that “make” is not set up in the primary path. In this case, try after adding to the path the ‘/usr/ccs/bin/” directory where “make” is located.

NOTE) If you wish to delete the library and object created by compilation and maintain the condition of the early distributed edition, enter “make clean”. In this case, “make clean” does not delete Makefile created by the configuration for the convenience purpose. If you wish to make an environment to be exactly the same as that of the early distributed edition, use “make distclean”.

NOTE) Compiled packages of each platform are provided on for those users that are not able to perform the procedure or for those cases in which there is no compiler in the system.

Step 4. Install

The “make install” command is used in order to install a library. “make install” installs a library on the system. And the installation location of headers and libraries is adjusted by the –prefix, –libdir, –includedir options during the configuration. The relationship between the installation location and the options is as follows, and the installation location comes to be /usr/local/lib, /usr/local/include when the configuration is performed without any argument.

${prefix} ===> /usr/local (default) ${libdir} ===> ${prefix}/lib (default) ${includedir} ===> ${prefix}/include (default) libqDecoder.a ===> ${libdir}/libqDecoder.a[n] ===> ${libdir}/[n] ===> ${libdir}/ qDecoder.h ===> ${includedir}/include/qDecoder.h ex) $ ./configure –prefix=/usr ex) $ ./configure –libdir=/home/nobreak/mylib –includedir=/home/nobreak/myinclude

NOTE) is a symbolic link that refers to[n] which is the actual shared library. Here, n is an integer that increases from 1. It increases when the downward compatibility lacks. Let’s take version 6.0.1 for example, in which it is Even if the qDecoder version increases to 7.0 and 8.0, the shared library will be created as when the downward compatibility is maintained.

$ cd qDecoder-VERSION $ make install

NOTE) A root privilege is required for an installation in the system area.

Step 5. Deinstall

The installed qDecoder can be completely deleted by “make deinstall”.

$ cd qDecoder-VERSION $ make deinstall

Step 6. Test

In the examples directory, there are example sources that have been produced in advance. Since sources are automatically compiled when packages are compiled, tests can be performed immediately after examples.html of the corresponding directory is opened by browsers. Referring to source codes and Makefile, think how you should apply qDecoder to your program.

The example is linked to the static library (libqDecoder.a). If a shared library ( is linked, the program gets more compact and works efficiently. Modify “QLIB = ../src/libqDecoder.a” of examples/Makefile into “QLIB = ../src/”. And then, compile it again through the “make clean all” command at the examples directory. (You can get the same result by doing as follows at the examples directory without modifying Makefile: “make clean all QLIB=../src/”)

$ make clean all QLIB=../src/libqDecoder.a (When linking static libraries) $ ls -al *.cgi -rwxr-xr-x 1 root power 61876 6 2 22:32 arglist.cgi -rwxr-xr-x 1 root power 61210 6 2 22:32 fetch.cgi -rwxr-xr-x 1 root power 61331 6 2 22:32 multivalue.cgi -rwxr-xr-x 1 root power 61551 6 2 22:32 streamedit.cgi -rwsr-sr-x 1 root power 61639 6 2 22:32 upload.cgi $ make clean all QLIB=../src/ (When linking shared libraries) $ ls -al *.cgi -rwxr-xr-x 1 root power 12682 6 2 22:33 arglist.cgi -rwxr-xr-x 1 root power 11560 6 2 22:33 fetch.cgi -rwxr-xr-x 1 root power 11852 6 2 22:33 multivalue.cgi -rwxr-xr-x 1 root power 12052 6 2 22:33 streamedit.cgi -rwsr-sr-x 1 root power 12393 6 2 22:33 upload.cgi

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