Compile problem with liquid_pll_example.tar.gz

[StoneyStu]

When following instructions on http://liquidsdr.org/blog/pll-howto/ my build failed with the following error (on kubuntu 18.04):

x@kubuntu-1804:~/liquid-dsp/pll/liquid_pll_example$ make pll_example
gcc -Wall -O2 -lm -lc -o pll_example pll_example.c
/tmp/ccJ75o4p.o: In function `main':
pll_example.c:(.text.startup+0xf7): undefined reference to `sincosf'
pll_example.c:(.text.startup+0x120): undefined reference to `sincosf'
pll_example.c:(.text.startup+0x1bd): undefined reference to `atan2f'
collect2: error: ld returned 1 exit status
makefile:8: recipe for target 'pll_example' failed
make: *** [pll_example] Error 1
x@kubuntu-1804:~/liquid-dsp/pll/liquid_pll_example$ 

The problem was resolved by changing the order of the gcc line in the makefile from: gcc -Wall -O2 -lm -lc -o $@ $< to gcc -o $@ $< -Wall -O2 -lc -lm

Just thought I'd mention it.

[jgaeddert]

Thanks! You know, I had to go through and change the makefile to accommodate new versions of gcc that enforced this ordering change. I'll make the fix right away.