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precompiled object not linked in; image may not run
If you use precompiled headers, LINK requires that all of the object files created with precompiled headers must be linked in. If you have a source file that you use to generate a precompiled header for use with other source files, you now must include the object file created along with the precompiled header.
For example, if you compile a file called STUB.cpp to create a precompiled header for use with other source files, you must link with STUB.obj or you will get this error. In the following command lines, line one is used to create a precompiled header, COMMON.pch, which is used with PROG1.cpp and PROG2.cpp in lines two and three. The file STUB.cpp contains only #include lines (the same #include lines as in PROG1.cpp and PROG2.cpp) and is used only to generate precompiled headers. In the last line, STUB.obj must be linked in to avoid LNK2011.
cl /c /Yccommon.h stub.cpp
cl /c /Yucommon.h prog1.cpp
cl /c /Yucommon.h prog2.cpp
link /out:prog.exe stub.obj prog1.obj prog2.obj