Compiled on RPI4B-4G with 5.10.77-piCore-v8

Compile Flags:
CFLAGS='-march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -flto -fuse-linker-plugin -fno-exceptions'
CXXFLAGS='-march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -flto -fuse-linker-plugin -fno-exceptions -fno-rtti'
LDFLAGS='-Wl,-O1'
export CFLAGS CXXFLAGS LDFLAGS

Dependencies:
compiletc
cmake

Commands:

wget https://c-ares.org/download/c-ares-1.18.1.tar.gz

tar -xf /mnt/mmcblk0p3/compile/c-ares/c-ares

cd c-ares-1.18.1/

mkdir build && cd build

# build type: MinSizeRel --> mini-size release
cmake -LAH -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_INSTALL_LIBDIR:PATH=lib -DCMAKE_BUILD_TYPE=MinSizeRel -DCMAKE_VERBOSE_MAKEFILE=TRUE ..

time make -j4
real    0m 12.21s
user    0m 21.35s
sys     0m 7.23s

DESTDIR=/tmp/packing-c-ares make install

mkdir -p /tmp/packing-c-ares-dev/usr/local/lib/

mv /tmp/packing-c-ares/usr/local/lib/cmake /tmp/packing-c-ares/usr/local/lib/pkgconfig /tmp/packing-c-ares-dev/usr/local/lib/
mv /tmp/packing-c-ares/usr/local/include/ /tmp/packing-c-ares-dev/usr/local/
rm -fr /tmp/packing-c-ares/usr/local/share

find /tmp/packing-c-ares -exec file {} + | grep ELF | cut -d : -f 1 | xargs strip --strip-unneeded