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Old 08 July 2019, 21:50   #15
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Join Date: Jan 2014
Location: England
Posts: 53
Originally Posted by alkis View Post
Indeed that was the problem.
After switching to fs-uae-3.0 branch, it built correctly. It took 45 minutes to compile (on pi 3, single thread make invocation)


Same here, Thanks Frode.

Im checking out with

git clone -b fs-uae-3.0 --single-branch
configuring with
./configure --without-libmpeg2 --disable-jit --build=arm-pc-linux-gnueabihf
Haven't delved deep into compiler optimisations for the PI4 yet, so basing on a working config for the PI3 (hopefully adjusting for the new a72 core), im passing the following extra CFLAGS/CXXFLAGS as environment variables.
 "CFLAGS="-O2 -pipe -march=armv8-a+crc -mcpu=cortex-a72 -mtune=cortex-a72 -mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard -ftree-vectorize -funsafe-math-optimizations"
All compiling fine, and definitely running smoother than the 2.8 in the Buster repositories (which is probably not optimised for v7/neon FPU for backwards compatibility)
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