tce-load -i compiletc libunistring-dev

wget https://ftp.gnu.org/gnu/libidn/libidn2-2.3.7.tar.gz

cd libidn2-2.3.7

CC="gcc -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -Os -pipe" CXX="g++ -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --localstatedir=/var --disable-static

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;

make [0m 38.46s]
sudo make install

  Version:            2.3.7
  Libtool version     4:0:4
  DLL version:        0
  Header version:     major 2 minor 3 patch 7 number 0x02030007
  Build system:       armv7l-unknown-linux-gnueabihf
  Host/Target system: armv7l-unknown-linux-gnueabihf
  Install prefix:     /usr/local
  Compiler:           gcc -march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -Os -pipe
  CFLAGS:             -g -O2
  CPPFLAGS:           
  LDFLAGS:            
  Library types:      Shared=yes, Static=no

  Warning flags:      
      WERROR_CFLAGS:  
WERROR_TESTS_CFLAGS:  
        WARN_CFLAGS:   -fanalyzer -fstrict-flex-arrays -Wall -Warith-conversion -Wcast-align=strict -Wdate-time -Wdisabled-optimization -Wdouble-promotion -Wduplicated-branches -Wduplicated-cond -Wextra -Wformat-signedness -Winit-self -Winvalid-pch -Wlogical-op -Wmissing-declarations -Wmissing-include-dirs -Wmissing-prototypes -Wnested-externs -Wnull-dereference -Wold-style-definition -Wopenmp-simd -Woverlength-strings -Wpacked -Wpointer-arith -Wshadow -Wstack-protector -Wstrict-flex-arrays -Wstrict-prototypes -Wsuggest-attribute=cold -Wsuggest-attribute=format -Wsuggest-attribute=malloc -Wsuggest-attribute=noreturn -Wsuggest-final-methods -Wsuggest-final-types -Wsync-nand -Wtrampolines -Wuninitialized -Wunknown-pragmas -Wunsafe-loop-optimizations -Wunused-macros -Wvariadic-macros -Wvector-operation-performance -Wvla -Wwrite-strings -Warray-bounds=2 -Wattribute-alias=2 -Wbidi-chars=any,ucn -Wformat-overflow=2 -Wformat=2 -Wformat-truncation=2 -Wimplicit-fallthrough=5 -Wshift-overflow=2 -Wuse-after-free=3 -Wunused-const-variable=2 -Wvla-larger-than=4031 -Wno-analyzer-malloc-leak -Wno-sign-compare

  Documentation:      yes

  nl_langinfo:        yes
  Libiconv:           not working, consider installing GNU libiconv
         LTLIBICONV:  
  Libunistring:       yes
            VERSION:  1.2.0
     LTLIBUNISTRING:  -L/usr/local/lib -lunistring -R/usr/local/lib

  Version script:     yes

  Valgrind: