Adapt to from-source-builds on Linux
Adapt to from-source-builds on Linux

hpicgs/glbinding,hpicgs/glbinding,hpicgs/glbinding,mcleary/glbinding,j-o/glbinding,hpicgs/glbinding,mcleary/glbinding,j-o/glbinding,j-o/glbinding,mcleary/glbinding,cginternals/glbinding,mcleary/glbinding,j-o/glbinding,cginternals/glbinding