[nmglug] Solar Position Algorithm (SPA)

[a]

Sleuths of the Glug;

Can you offer a solution? Thanks.


a at a-laptop:~/Documents/spa$ ls -al
total 64
drwxrwxr-x 2 a a  4096 Nov 11 18:23 .
drwxr-xr-x 4 a a  4096 Nov  6 20:14 ..
-rw-rw-r-- 1 a a 37240 Nov  6 20:15 spa.c
-rw-rw-r-- 1 a a 11119 Nov  6 20:19 spa.h
-rwxrwxr-x 1 a a  3855 Nov  6 20:33 spa_tester.c

I did chmod +x on above probably not necessary but same result as w/o chmod

a at a-laptop:~/Documents/spa$ gcc -o spa_tester spa_tester.c
/tmp/ccQbHXvm.o: In function `main':
spa_tester.c:(.text+0xc7): undefined reference to `spa_calculate'
collect2: error: ld returned 1 exit status

reference: attachment

Best,Anthony
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