I am looking at getting started with creating custom GCI functions on  UV 11.3.3 (RHEL7 installations).
I know nothing about c programming or compiling so am looking for feedback on how to get started (specifically with GCI - I figure I can pick up the c stuff as I go).

Has anyone worked through getting the example GCI functions  built and integrated with UV?

I have already learned that I needed to install the glibc-devel package in order for the compiler to be happy it has all the includes.

Now I am stuck with the following:

root@h1133# pwd
/usr/uv/gcidir
root@h1133# make -f Make.gci gci_hello
gcc -Iinclude -m64 -DU2_64_BUILD -fPIC -m64 -DU2_64_BUILD -DTHREADS -DFASTIO -DUSE_STDARG -DU_LINUX -DU2_LINUX -D_GNU_SOURCE -fPIC -Wimplicit-function-declaration -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -DNETwork=2 -DRAID -DUNIVERSEon -DU2SVNURL="/uvuddb-uv113/release/11.3.3@d15ee91-20210525" -lm -lcrypt -m64 gci_hello.c -o gci_hello
/usr/lib/gcc/x86_64-redhat-linux/4.8.5/../../../../lib64/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status
make: *** [gci_hello] Error 1
root@h1133#


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Gregor Scott
Software Architect
Pentana Solutions Pty Ltd
Mount Waverley VIC AU
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