tce-load -i compiletc cmake 

cd jsoncpp-1.8.4

mkdir build
cd build

cmake -LAH -DCMAKE_C_FLAGS_RELEASE="-flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe" -DCMAKE_CXX_FLAGS_RELEASE="-flto -fuse-linker-plugin -march=i486 -mtune=i686 -Os -pipe -D_GLIBCXX_USE_C99_MATH" -DCMAKE_INSTALL_PREFIX=/usr/local -DCMAKE_INSTALL_LOCALSTATEDIR=/var -DCMAKE_BUILD_TYPE=Release -DBUILD_STATIC_LIBS=OFF -DBUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_LIBDIR:PATH=lib -DCMAKE_VERBOSE_MAKEFILE=TRUE ../

make
sudo make install