[cfe-dev] Relative Paths in Compilation Database

[Daniel Dilts]

I am calling runClangTidy using a JSONCompilationDatabase that I generate
from a string.  Everything works perfectly until I have a relative path.

With the following database I use "D:\\CMakeTest\\bld\\..\\src\\main.cpp"
as the file to open:
[
   {
      "directory": "D:\\CMakeTest\\bld\\",
      "command"  : "D:/llvm/build/Debug/bin/clang.exe -I\"C:\\Program Files
(x86)\\Microsoft Visual Studio 12.0\\VC\\include\" -I\"C:\\Program Files
(x86)\\Microsoft Visual Studio 12.0\\VC\\atlmfc\\include\" -I\"C:\\Program
Files (x86)\\Windows Kits\\8.1\\Include\\um\" -I\"C:\\Program Files
(x86)\\Windows Kits\\8.1\\Include\\shared\" -I\"C:\\Program Files
(x86)\\Windows Kits\\8.1\\Include\\winrt\"   -I\"C:\\Program Files
(x86)\\Microsoft Visual Studio 12.0\\VC\\include\" -I\"C:\\Program Files
(x86)\\Microsoft Visual Studio 12.0\\VC\\atlmfc\\include\" -I\"C:\\Program
Files (x86)\\Windows Kits\\8.1\\Include\\um\" -I\"C:\\Program Files
(x86)\\Windows Kits\\8.1\\Include\\shared\" -I\"C:\\Program Files
(x86)\\Windows Kits\\8.1\\Include\\winrt\"   -DWIN32 -D_WINDOWS -D_DEBUG
-DCMAKE_INTDIR=\"Debug\" ..\\src\\main.cpp",
      "file"     : "..\\src\\main.cpp"
   },
]

This gives me an output of "Error while processing
D:\\CMakeTest\\bld\\..\\src\\main.cpp."

When I use the following database with "D:\\CMakeTest\\src\\main.cpp" as
the file to open, everything works.

[
   {
      "directory": "D:\\CMakeTest\\src\\",
      "command"  : "D:/llvm/build/Debug/bin/clang.exe -I\"C:\\Program Files
(x86)\\Microsoft Visual Studio 12.0\\VC\\include\" -I\"C:\\Program Files
(x86)\\Microsoft Visual Studio 12.0\\VC\\atlmfc\\include\" -I\"C:\\Program
Files (x86)\\Windows Kits\\8.1\\Include\\um\" -I\"C:\\Program Files
(x86)\\Windows Kits\\8.1\\Include\\shared\" -I\"C:\\Program Files
(x86)\\Windows Kits\\8.1\\Include\\winrt\"   -I\"C:\\Program Files
(x86)\\Microsoft Visual Studio 12.0\\VC\\include\" -I\"C:\\Program Files
(x86)\\Microsoft Visual Studio 12.0\\VC\\atlmfc\\include\" -I\"C:\\Program
Files (x86)\\Windows Kits\\8.1\\Include\\um\" -I\"C:\\Program Files
(x86)\\Windows Kits\\8.1\\Include\\shared\" -I\"C:\\Program Files
(x86)\\Windows Kits\\8.1\\Include\\winrt\"   -DWIN32 -D_WINDOWS -D_DEBUG
-DCMAKE_INTDIR=\"Debug\" main.cpp",
      "file"     : "main.cpp"
   },
]


Is there something that I am doing wrong?  The only changes between the two
compilation databases are the directory and file entries.  Both should
refer to the same absolute path.
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