+freebsd)
+ export MAKE=gmake
+ export TAR=tar
+ export NPROC="getconf _NPROCESSORS_ONLN"
+ export CPPFLAGS="-I/usr/local/include"
+ export LDFLAGS="-L/usr/local/lib"
+ export PYTHON="python3"
+ export PYTHON_CONFIG="python3-config"
+
+ # For bt 1.5
+ export YACC="bison -y"
+ ;;
+