Compiled on PI4B4G with 5.10.77-piCore-v8

Compile Flags:
CC='gcc'
CXX='g++'
CPPFLAGS='-DNDEBUG'
CFLAGS='-march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -flto'
CXXFLAGS='-march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -flto'
LDFLAGS='-Wl,-O1 -Wl,-v -fuse-ld=gold -L/usr/local/lib'
export CC CXX CPPFLAGS CFLAGS CXXFLAGS LDFLAGS

AR='gcc-ar'
NM='gcc-nm'
RANLIB='gcc-ranlib'
LD='ld.gold'
export AR NM RANLIB STRIP LD

Dependencies:
cmake
compiletc
llvm-bin

Commands:

# tried to use the llvm tool set with clang
# but it won't pass the test
# "SCEV is not expected to evaluate a block terminator"
# fix lto for gcc
P=/usr/local/libexec/gcc/aarch64-unknown-linux-gnu/10.2.0/liblto_plugin.so.0.0.0
sudo mkdir -p /usr/local/lib/bfd-plugins
sudo ln -sfv $P /usr/local/lib/bfd-plugins/liblto_plugin.so

wget https://github.com/fmtlib/fmt/archive/refs/tags/8.1.1.tar.gz

tar -xf 8.1.1.tar.gz

cd fmt-8.1.1/

mkdir build && cd build

# Note: if you choose shared library, the static one is automatically disabled and can not be turned on
cmake .. -DCMAKE_BUILD_TYPE='MinSizeRel' \
-DCMAKE_INSTALL_PREFIX='/usr/local' \
-DCMAKE_INSTALL_LIBDIR='lib' \
-DBUILD_SHARED_LIBS=TRUE \
-DCMAKE_POSITION_INDEPENDENT_CODE=TRUE

time make -j4
real    5m 47.13s
user    21m 13.98s
sys     1m 1.03s

DESTDIR=/tmp/packing-fmt make install/strip

# rebuild for static library
# add a patch file for the cmake config files