Ubuntu 15.10 : undefined reference to poco

Here it is :

/home/francois/Desktop/openFrameworks/libs/openFrameworksCompiled/lib/linux64/libopenFrameworks.a(ofSystemUtils.o): In function `gtkFileDialog(GtkFileChooserAction, std::string, std::string) [clone .constprop.8]':
ofSystemUtils.cpp:(.text+0x5bc): undefined reference to `Poco::Event::Event(Poco::Event::EventType)'
/home/francois/Desktop/openFrameworks/libs/openFrameworksCompiled/lib/linux64/libopenFrameworks.a(ofURLFileLoader.o):(.rodata._ZTVN4Poco3Net4Impl21IPv4SocketAddressImplE[_ZTVN4Poco3Net4Impl21IPv4SocketAddressImplE]+0x50): undefined reference to `Poco::Net::Impl::IPv4SocketAddressImpl::toString() const'
/home/francois/Desktop/openFrameworks/libs/openFrameworksCompiled/lib/linux64/libopenFrameworks.a(ofURLFileLoader.o):(.rodata._ZTVN4Poco3Net4Impl21IPv6SocketAddressImplE[_ZTVN4Poco3Net4Impl21IPv6SocketAddressImplE]+0x50): undefined reference to `Poco::Net::Impl::IPv6SocketAddressImpl::toString() const'
collect2: error: ld returned 1 exit status
/home/francois/Desktop/openFrameworks/libs/openFrameworksCompiled/project/makefileCommon/compile.project.mk:381: recipe for target 'bin/projectGenerator' failed
make[1]: *** [bin/projectGenerator] Error 1
make[1]: Leaving directory '/home/francois/Desktop/openFrameworks/apps/projectGenerator/commandLine'
/home/francois/Desktop/openFrameworks/libs/openFrameworksCompiled/project/makefileCommon/compile.project.mk:126: recipe for target 'Release' failed
make: *** [Release] Error 2
make: Leaving directory '/home/francois/Desktop/openFrameworks/apps/projectGenerator/commandLine'
there has been a problem compiling the command line projectGenerator