Hello, I am working on a CAmkES application attempting to build a seL4 Network Stack. I am basing this on the CAmkES-VM and utilizing UDP Protocol with the lwIP library. During my build process, I get quite a few linking errors like this: undefined reference to `pbuf_alloc' This is odd, because in the templates, the proper header files are being linked in. There are also warnings like this: Warning: no template for ethdriver_1.to.source Even though the connection does exist: connection seL4Ethdriver eth_driver(from router.ethdriver, to ethdriver.client); Is there something obvious I am doing wrong? Thanks Chris
Hi Chris, For the 'pbuf_alloc' linker error can you confirm that the component is having 'lwip' added as a LIBS dependency. For example in the camkes-vm in projects/vm/components/UDPServer/UDPServer.mk there is the line UDPServer_LIBS := sel4camkes ethdrivers lwip sel4vspace This is what actually causes lwip to be linked into the component, and not just be provided as a build dependency for header staging With the template error can you confirm that you are provided the attributes for router.ethdriver? For example in apps/cma34cr_singlevm/vm.camkes the connection connection seL4Ethdriver eth_driver0(from udpserver0.ethdriver, to ethdriver.client) Has some associated configuration for udpserver0.ethdriver of udpserver0.ethdriver_attributes = "1"; udpserver0.ethdriver_shmem_size = 0x1000; udpserver0.ethdriver_global_endpoint = "udpserver0_endpoint"; udpserver0.ethdriver_mac = [06, 00, 00, 12, 13, 14]; Adrian On Wed 18-Jan-2017 6:10 AM, Chris Guikema wrote: Hello, I am working on a CAmkES application attempting to build a seL4 Network Stack. I am basing this on the CAmkES-VM and utilizing UDP Protocol with the lwIP library. During my build process, I get quite a few linking errors like this: undefined reference to `pbuf_alloc' This is odd, because in the templates, the proper header files are being linked in. There are also warnings like this: Warning: no template for ethdriver_1.to.source Even though the connection does exist: connection seL4Ethdriver eth_driver(from router.ethdriver, to ethdriver.client); Is there something obvious I am doing wrong? Thanks Chris _______________________________________________ Devel mailing list Devel@sel4.systemsmailto:Devel@sel4.systems https://sel4.systems/lists/listinfo/devel
Adrian,
You were right about the linker error; I had not renamed the LIBS line...
As for the template warning, here is my relevant configuration lines:
router.ethdriver_attributes = "1";
router.ethdriver_global_endpoint = "router_ep";
router.ethdriver_mac = [00, 0x0A, 0x35, 0x02, 0xFF, 0x1E];
From: Adrian.Danis@data61.csiro.au [mailto:Adrian.Danis@data61.csiro.au]
Sent: Tuesday, January 17, 2017 10:22 PM
To: Chris Guikema
participants (2)
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Adrian.Danis＠data61.csiro.au -
Chris Guikema