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Add a library C/C++ into project Titan [message #1805813]

Wed, 24 April 2019 14:34

Hung Duy Mai

Messages: 8
Registered: April 2019

Junior Member

Hello experts,

Could you show me how to import/add libraries C/C++ and how to build a external library C/C++ with TITAN?

Thanks for your helping.

Regards
Duy

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Re: Add a library C/C++ into project Titan [message #1805852 is a reply to message #1805813]

Thu, 25 April 2019 12:43

Lenard Nagy

Messages: 54
Registered: September 2016

Member

Hi Duy,

Since I do not know if You are using Titan from CommandLine or from Eclipse IDE I'll explain both. Also, I'm supposing You are working under a Linux distribution.

Supposing You have a precompiled library "mylib.so" under the path "/usr/lib/"

For both methods You'll have to add the containing directory to the LD_LIBRARY_PATH variable.

Let's start with the Eclipse IDE part:
Right-Click on the name of the project in the left project browser pane and select "Properties"
In the "Properties for <PROJECTNAME>" window select "TITAN Project Property"
In the rigth pane around the middle click on "Internal makefile creation attributes" (here I'm supposing that You are using the default Eclipse-managed Makefile)
Under the menu item "Platform specific libraries" select "Linux". To add a library click on the "Add" icon (it is a leaf of paper with a green "+" sign)
In this window specify the name of the library, e.g. mylib (without the extension)
Under the menu item "Linker" select "Libraries". To add a library path in the "Library search path (-L)" list click on the "Add" icon (it is a leaf of paper with a green "+" sign)
In this window specify the path where the library is located (excluding the file name) either by manually typing it or selecting it from the path or environment variables or browsing for it in the file system using the "browse" button.

After this You should be able to compile and run the project.

CLI:

When building Your project from CLI You have do the modifications to the Makefile of the project:

- Add the containing directory path to the CPPFLAGS list with a "-I" prefix, e.g.:
CPPFLAGS = -D$(PLATFORM) -I. -I$(TTCN3_DIR)/include -I/usr/lib/

- Add Your library to the LINUX_LIBS, e.g:
LINUX_LIBS = -lxml2 -lpthread -lrt -lmylib

- Modify the $(EXECUTABLE): ... rule by adding the path containing the library with a "-L" prefix, e.g. the full rule should look like this:

$(EXECUTABLE): $(OBJECTS) $(BASE_OBJECTS)
	$(CXX) $(LDFLAGS) -o $@ $(OBJECTS) $(BASE_OBJECTS) \
	-L$(TTCN3_DIR)/lib -L$(OPENSSL_DIR)/lib -L$(XMLDIR)/lib -L/usr/lib/ \     <-- Look at the last -L item in this line
	-l$(TTCN3_LIB) -lcrypto \
	$($(PLATFORM)_LIBS) \
	|| if [ -f $(TTCN3_DIR)/bin/titanver ]; then $(TTCN3_DIR)/bin/titanver $(OBJECTS) $(BASE_OBJECTS); else : ; fi

After this You should be able to compile and run the project.

Regards,
Lenard Nagy

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Re: Add a library C/C++ into project Titan [message #1805878 is a reply to message #1805852]

Fri, 26 April 2019 10:53

Jeno Attila Balasko

Messages: 80
Registered: September 2013
Location: Budapest, Hungary

Member

Hi Duy,

if you were interested in using C++ code from ttcn code, I would suggest you this as an interesting an useful source: https://github.com/eclipse/titan.Libraries.TCCUsefulFunctions

Best regards
Jeno

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