After removing call "C:\Program Files\Microsoft Visual Studio 9.0\VC\bin\vcvars32.bat", calling misc/vs2008.bat in gambc-v4_6_6 sources from VS2010 command prompt gives these errors for gsc:
_gambcgsc.obj : error LNK2001: unresolved external symbol _____20___t_2d_univ _gambcgsc.obj : error LNK2001: unresolved external symbol _____20___codegen _gambcgsc.obj : error LNK2001: unresolved external symbol _____20___x86 _gambcgsc.obj : error LNK2001: unresolved external symbol _____20___asm _gambcgsc.obj : error LNK2001: unresolved external symbol _____20___assert gsc.exe : fatal error LNK1120: 5 unresolved externals