tce-load -i compiletc meson

wget https://download.gnome.org/sources/libsigc++/3.6/libsigc++-3.6.0.tar.xz

cd libsigc++-3.6.0

mkdir build-lib
cd build-lib

CC="gcc -flto -mtune=generic -Os -pipe" CXX="g++ -flto -mtune=generic -Os -pipe -DNDEBUG" meson --prefix=/usr/local --localstatedir=/var --buildtype=plain -Dbuild-documentation=false -Dbuild-examples=false

ninja [0m 31.90s]
sudo ninja install

libsigc++ 3.6.0

         Maintainer mode: if-git-build (false)
       Compiler warnings: min (warning_level: 1, werror: false)
    Build deprecated API: true
Build HTML documentation: false
          XML validation: false (requires xmllint with Relax NG and DocBook V5.0 support)
               Build PDF: false
  Build example programs: false
     Build test programs: true
               Benchmark: false
Directories:
                  prefix: /usr/local
              includedir: /usr/local/include
        includesigcxxdir: /usr/local/include/sigc++-3.0
                  libdir: /usr/local/lib
        includeconfigdir: /usr/local/lib/sigc++-3.0/include
            pkgconfigdir: /usr/local/lib/pkgconfig
                 datadir: /usr/local/share
                  docdir: /usr/local/share/doc/libsigc++-3.0
              devhelpdir: /usr/local/share/devhelp/books/libsigc++-3.0
             tutorialdir: /usr/local/share/doc/libsigc++-3.0/tutorial