True, can reproduce. Reading the issue and the linked "differences in C99" page, this all makes sense.
Thanks for enlightening me!
Best regards, Marcus
On Fri, 2018-06-29 at 10:11 +0100, David Woodhouse wrote:
On Fri, 2018-06-29 at 08:25 +0000, Müller, Marcus (CEL) wrote:
Hi David, Pinky, Steve and all,
I'd agree with "uh, I need to know where this goes wrong please, I'm scared".
GCC just fails to emit the offending functions and then the link fails:
[ 36%] Linking C executable rtl_power CMakeFiles/rtl_power.dir/rtl_power.c.o: In function `fix_fft': rtl_power.c:(.text+0x41a): undefined reference to `FIX_MPY' rtl_power.c:(.text+0x445): undefined reference to `FIX_MPY' rtl_power.c:(.text+0x476): undefined reference to `FIX_MPY' rtl_power.c:(.text+0x49d): undefined reference to `FIX_MPY' collect2: error: ld returned 1 exit status
You should be able to reproduce this really easily by building with -O0.
Admittedly it's fairly bloody stupid to use -O0 for rtl-sdr but for the MIPS target this was even happening with -Os, which is slightly saner.