gclib ships with a compiled version of the open source portion, gclibo. However, if a source modification is desired, the following instructions will help with recompiling this portion of the library.

Windows

For brevity, these instructions assume the default installation location of C:\Program Files (x86)\Galil\gclib and a build type of x86 (win32). The following instructions were performed on Visual Studio Professional 2015 and can be extended to other Visual Studio versions.

Preparation

Create a working directory. A convenient, empty, writable location, e.g.

C:\>mkdir %homepath%\Desktop\temp

Note: In this documentation, a single greater-than character (>) will indicate a command prompt at this working directory.

Recompiling gclibo requires the source code for the open source compression library zlib. This can be downloaded from the zlib website: http://zlib.net/zlib1211.zip.

Extract the downloaded zlib source files to the working directory.

Open VS2015 x86 Native Tools Command Prompt and navigate to the working directory.

C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC>cd %homepath%\Desktop\temp
C:\Users\user\Desktop\temp>dir /b
zlib-1.2.11

Copy files

Set an environment variable for the base path.

>set base="C:\Program Files (x86)\Galil\gclib"

Set an environment variable for the zlib base path.

>set zlib="%CD%\zlib-1.2.11"

Copy the gclibo source files.

>copy %base%\source\gclibo\*.c .
C:\Program Files (x86)\Galil\gclib\source\gclibo\arrays.c
C:\Program Files (x86)\Galil\gclib\source\gclibo\gclibo.c
        2 file(s) copied.

Modify source

Make any necessary changes. For this example, the GInfo() function was changed from

GReturn GCALL GInfo(GCon g, GCStringOut info, GSize info_len)
{
  return GUtility(g, G_UTIL_INFO, info, &info_len);
}

to

GReturn GCALL GInfo(GCon g, GCStringOut info, GSize info_len)
{
  strncpy(info, "My controller", info_len);
  return G_NO_ERROR;
  //return GUtility(g, G_UTIL_INFO, info, &info_len);
}

Compile and copy

Compile the source code.

>cl -c *.c %zlib%\*.c -I %base%\include -I %zlib% -DBUILDING_GCLIB

Link the binaries.

>link /DLL *.obj %base%\lib\dynamic\x86\gclib.lib /OUT:gclibo.dll

Copy

Copy back to the installation location from the file explorer. This will require administrator privileges.

Copy gclibo.lib to "C:\Program Files (x86)\Galil\gclib\lib\dynamic\x86"
Copy gclibo.dll to "C:\Program Files (x86)\Galil\gclib\dll\x86"

Test

Copy simple example

>copy %base%\examples\cpp\x_simple.c .

Edit GOpen() call as necessary.

Compile

>cl x_simple.c %base%\lib\dynamic\x86\*.lib -I %base%\include

Set Path to DLL

>set PATH=%base%\dll\x86\;%PATH%

Execute

>x_simple.exe
rc: 0
version: 85.60.138
rc: 0
rc: 0
info: My controller
rc: 0
response:  355000958.0000
:

Linux

Copy files

$ cp -r /usr/share/gclib/src/gclibo .
$ cd gclibo
$ cp /usr/include/gclib*.h .

Modify source

Make any necessary changes. For this example, the GInfo() function was changed from

GReturn GCALL GInfo(GCon g, GCStringOut info, GSize info_len)
{
  return GUtility(g, G_UTIL_INFO, info, &info_len);
}

to

GReturn GCALL GInfo(GCon g, GCStringOut info, GSize info_len)
{
  strncpy(info, "My controller", info_len);
  return G_NO_ERROR;
  //return GUtility(g, G_UTIL_INFO, info, &info_len);
}

Make and install

# make install -f makefile_gclibo
# make clean -f makefile_gclibo

Test

Copy simple example

$ cp /usr/share/gclib/doc/examples/cpp/x_examples/x_simple.c .

Edit GOpen() call as necessary.

Compile

$ gcc x_simple.c -Wall -Werror -lgclib -lgclibo -o simple

Execute

$ ./simple
rc: 0
version: 85.60.131
rc: 0
rc: 0
info: My controller
rc: 0
response:  182879322.0000
:

OS X

Copy files

$ mkdir test
$ cd test
$ tar -xvf /Applications/gclib/source/gclibo_src.tar.gz x gclibo.h
x gclibo.c
x arrays.c
x makefile_gclibo
$ cp /Applications/gclib/include/* .
$ cp /Applications/gclib/dylib/gclib.0.dylib .
$ ls
arrays.c  gclib.h   gclib_record.h  gclibo.h
gclib.0.dylib gclib_errors.h  gclibo.c  makefile_gclibo

Modify source

Make any necessary changes. For this example, the GInfo() function was changed from

GReturn GCALL GInfo(GCon g, GCStringOut info, GSize info_len)
{
  return GUtility(g, G_UTIL_INFO, info, &info_len);
}

to

GReturn GCALL GInfo(GCon g, GCStringOut info, GSize info_len)
{
  strncpy(info, "My controller", info_len);
  return G_NO_ERROR;
  //return GUtility(g, G_UTIL_INFO, info, &info_len);
}

Make and install

$ make -f makefile_gclibo
Open source component, gclibo.0.dylib
  Compiling open source component.
gcc -c -Wall -Werror -fPIC -fvisibility=hidden -DBUILDING_GCLIB -DHAVE_VISIBILITY *.c
  Linking open source component into shared library.
gcc -dynamiclib -o gclibo.0.dylib *.o gclib.0.dylib
strip -u -r gclibo.0.dylib
  Cleaning up.
$ make install -f makefile_gclibo
Installing gclibo.0.dylib
cp gclibo.0.dylib /Applications/gclib/dylib
$ make clean -f makefile_gclibo
Cleaning project...

Test

Extract simple example

$ tar -xzf /Applications/gclib/examples/gclib_examples.tar.gz x_simple.c

Edit GOpen() call as necessary.

Compile

$ gcc x_simple.c -Wall -Werror gclib.0.dylib gclibo.0.dylib -o simple

Execute

$ ./simple
rc: 0
version: 127.110.253
rc: 0
rc: 0
info: My controller
rc: 0
response:  182879322.0000
: