Boost C++ Libraries: Ticket #12991: Could not find yacc to build JAM grammar. https://svn.boost.org/trac10/ticket/12991 <p> VS2008, XP, Boost 1.64. bootstrap.bat fale to build bootstrap.log indicates boost: "Could not find yacc to build JAM grammar." Recommneds .\build.bat mdvc no help. 1.63 installed OK. </p> en-us Boost C++ Libraries /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/12991 Trac 1.4.3