Trying to compile x264 on Synology DiskStation with PowerPC - powerpc

Question

I'm trying to compile x264 on a Synology NAS (DS413) with powerpc cpu (e500v).
However, when I try to run the configure - script, the following error occurs (in the config.log):
checking whether gcc works... no
Failed commandline was:
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gcc conftest.c -Wall -I. -I$(SRCPATH) -maltivec -mabi=altivec -lm -o conftest
conftest.c:1: error: AltiVec and E500 instructions cannot coexist
--------------------------------------------------
Failed program was:
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int main (void) { return 0; }
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DIED: No working C compiler found.
I'm 100% certain that gcc is installed and that it works. I've googled the error and it seems that this was a bug in the configure script which should have been fixed already:
link. It has something to do with altivec not present in the ppc hardware or something. The script should recognise this, but unfortunately it doesn't recognize it in my case. The x264 I tried to compile is the most recent one (cloned directly from github).
The error shows up regardless of which configuration-flags I set (I tried different ones, e.g. --prefix=/opt --enable-shared --disable-asm). I also tried to modify the configuration script with sed, i.e. changing this line:
CFLAGS="$CFLAGS -maltivec -mabi=altivec"
to simply:
CFLAGS="$CFLAGS"
but then I get this error:
checking whether gcc works... no
Failed commandline was:
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gcc conftest.c -Wall -I. -I$(SRCPATH) -lm -o conftest
/opt/lib/gcc/powerpc-linux-gnuspe/3.4.6/../../../../powerpc-linux-gnuspe/lib/li$
/opt/lib/gcc/powerpc-linux-gnuspe/3.4.6/../../../../powerpc-linux-gnuspe/lib/li$
/opt/lib/gcc/powerpc-linux-gnuspe/3.4.6/../../../../powerpc-linux-gnuspe/lib/li$
/opt/lib/gcc/powerpc-linux-gnuspe/3.4.6/../../../../powerpc-linux-gnuspe/lib/li$
/opt/lib/gcc/powerpc-linux-gnuspe/3.4.6/../../../../powerpc-linux-gnuspe/lib/li$
/opt/lib/gcc/powerpc-linux-gnuspe/3.4.6/../../../../powerpc-linux-gnuspe/lib/li$
collect2: ld returned 1 exit status
--------------------------------------------------
Failed program was:
--------------------------------------------------
int main (void) { return 0; }
--------------------------------------------------
DIED: No working C compiler found.
Any help on how to compile it would be greatly appreciated!