C2471 or LNK1140 errors may occur when you run into program database (PDB) file limits in Visual C++ (238875)
The information in this article applies to:
- Microsoft Visual C++, 32-bit Enterprise Edition 5.0
- Microsoft Visual C++, 32-bit Enterprise Edition 6.0
- Microsoft Visual C++, 32-bit Professional Edition 5.0
- Microsoft Visual C++, 32-bit Professional Edition 6.0
- Microsoft Visual C++, 32-bit Learning Edition 6.0
This article was previously published under Q238875 SYMPTOMS The following errors are normally related to running into
the module and size limits when a program database (PDB) file is created (a PDB
file contains information used by the debugger; the file has a .pdb extension):
Compiler Error: C2471: cannot update program database
Linker Error: LNK1140 "too many modules for program
database; relink with /PDB:NONE" Linker Error:LNK1201: error writing to program database
"c:\MSDEV\Projects\yourapp\Debug\yourapp.pdb"; check for insufficient disk
space CAUSE There is a limit of 4096 modules (.obj files) in a PDB
file. The file also has a total size limit of approximately 64 MB.
RESOLUTION There are several ways to reduce the size of PDB files:
- Build some of the source files with the /Zd switch (line
numbers only).
- Build some of the source files as separate dynamic-link
libraries (DLLs) instead of static libraries.
- Build some of the source files without debug
information.
- Try the compiler switch /Fd"myproject.pdb" (including the
quotation marks).
MORE INFORMATION Note that the linker option /PDBTYPE:SEPT may have little
affect in reducing the project's PDB file size. In Visual C++ 5.0, if you
choose to use the /Fd switch, avoid using the linker option /PDBTYPE:SEPT if
the PDB file name you choose is the same under compiler and linker options.
REFERENCES
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
121366
PDB and DBG files - What they are and how they work
| Modification Type: | Major | Last Reviewed: | 5/26/2005 |
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| Keywords: | kbtshoot kbBug kbCompiler kbDebug kbprb KB238875 kbAudDeveloper |
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