Compile Plugin for Linux

SDKs Plugins
#1

Hi, I have a plugin with some functions compiled and tested for Windows (Visual Studio Express) and OSX (Xcode), and I want to compile an application that use these plugin for Linux, how to compile my C / C++ code in Linux, so I can generate my Plugin for Linux too?

#2

Have you got any of the dev tools installed on Linux ?

You’ll need gcc then compile a shared library so you generate a .so file as the linux portion of the plugin

#3

Yes, I have gcc installed on Linux, but, my question is: PluginMain is c++ code. So, I think gcc won’t work with it, am I wrong? What do I have to include (.h) to my sources? Do I have to make some kind of changes on my code, or set some kind of environment variables? (on Windows, I had to set IGNOREQT on Visual Studio).

Thanks for Your help!

#4

Is there any readme for Linux, like the one for Visual Studio, present on the examples?

#5

you could start and check the examples coming with SDK. you compile with makefile and there you can define something. I define LINUX=1 for linux, so I can use #if LINUX there.

#6

GCC have a CPP frontend. Check the Eye Control example. Here is the make file (you can notice the g++ there):

[code]# Makefile_Linux | Sep 08 2011

This is the Linux makefile for the EyeControl plugin.

Document Author: William Yu

Document Contributor(s):

Revision History

CC = g++
BASEDIR = …/…/…
PLUGINSDKDIR = $(BASEDIR)/Plugins\ SDK
SDKGLUECODEDIR = $(PLUGINSDKDIR)/Glue\ Code
SDKINCLUDEDIR = $(PLUGINSDKDIR)/Includes

INCLUDE = -I$(SDKINCLUDEDIR)

PREFIXHEADER = $(SDKINCLUDEDIR)/LinuxHeader.h
CFLAGS = -s -O2 -DIGNOREQT -D__INTEL__ -DLINUX=1 -D__GCC__ $(INCLUDE) -include $(PREFIXHEADER)
LIBS =
BUILDOBJDIR = BuildLinux

OBJS = $(BUILDOBJDIR)/EyeControlPlugin.o \
$(BUILDOBJDIR)/PluginMain.o

all: CreateBuildObjDir $(OBJS)
$(CC) $(CFLAGS) -shared -o EyeControl.so $(OBJS) $(LIBS)

CreateBuildObjDir:
mkdir -p $(BUILDOBJDIR)

$(BUILDOBJDIR)/EyeControlPlugin.o: EyeControlPlugin.cpp
$(CC) $(CFLAGS) EyeControlPlugin.cpp -c -o $@

$(BUILDOBJDIR)/PluginMain.o: $(SDKGLUECODEDIR)/PluginMain.cpp
$(CC) $(CFLAGS) $(SDKGLUECODEDIR)/PluginMain.cpp -c -o $@

clean:
rm $(BUILDOBJDIR)/*.o -f
rm EyeControl.so
[/code]

#7

Ok, now I’ve got it!

Thank You all!!!

#8

Hi, I’ve compiled the plugin and maked the .rbx successfully, but when I build my application and try to run on a Linux machine, it returns this error:

Runtime Error
Please report what caused this error along with the information below.
Common/plugin.cpp: 5327
Failure Condition: 0
The application cannot continue because a needed file cannot be installed. /home/sandro/MyApplication/MyApplication Libs/libbds.so: undefined symbol: mod10

Any ideas?

#9

Try adding the --no-undefined flag here:
$(CC) $(CFLAGS) -shared -Wl,–no-undefined -o EyeControl.so $(OBJS) $(LIBS)

Basically you’re referencing a function that does not exist in your library. That flag will tell you where you’re using it and flag it as a compile error.

#10