Build failure seen in upf while building libgtp5gnl

[sudhir-intc]

I have tried to build the upf on the cascade lake server machine with Ubuntu 18.04.4 LTS and 5.0.0-23-generic kernel. I get the below error, looks in the build configuration there's some include missing to the kernel modules.

Making all in src
CC genl.lo
CC gtp5g-genl-pdr.lo
CC gtp5g-genl-far.lo
CC gtp5g-rtnl.lo
CC gtp5g.lo
gtp5g.c:71:14: warning: data definition has no type or storage class
EXPORT_SYMBOL(gtp5g_dev_alloc);
^
gtp5g.c:71:15: warning: type defaults to ‘int’ in declaration of ‘gtp5g_dev_alloc’ [-Wimplicit-int]
EXPORT_SYMBOL(gtp5g_dev_alloc);
^~~~~~~~~~~~~~~
gtp5g.c:71:15: error: ‘gtp5g_dev_alloc’ redeclared as different kind of symbol
gtp5g.c:60:19: note: previous definition of ‘gtp5g_dev_alloc’ was here
struct gtp5g_dev *gtp5g_dev_alloc(void)
^~~~~~~~~~~~~~~
gtp5g.c:48:14: warning: data definition has no type or storage class
EXPORT_SYMBOL(GTP5G_STRUCT_FUNC_NAME(_func_name))
^
gtp5g.c:73:1: note: in expansion of macro ‘gtp5g_struct_alloc_exp’
gtp5g_struct_alloc_exp(pdr, struct gtp5g_pdr);
^~~~~~~~~~~~~~~~~~~~~~
gtp5g.c:38:35: warning: type defaults to ‘int’ in declaration of ‘gtp5g_pdr_alloc’ [-Wimplicit-int]
#define GTP5G_STRUCT_FUNC_NAME(x) gtp5g ##x## _alloc

Attaching the generated build folder content

build.zip

[sudhir-intc]

I tried this build on a VM based on i7 too. Here the cpu configuration of the VM

Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 8
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 26
Model name: Intel Core i7 9xx (Nehalem Core i7, IBRS update)
Stepping: 3
CPU MHz: 2294.608
BogoMIPS: 4589.21
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 4096K
NUMA node0 CPU(s): 0-7

[sudhir-intc]

Many thanks for the quick fix. This has resolved the build issue for me.