https://bugs.llvm.org/show_bug.cgi?id=38940
Bug ID: 38940
Summary: lld-link /pdbaltpath:%_PDB% doesn't expand %_PDB%
Product: lld
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: COFF
Assignee: unassignedb...@nondot.org
Reporter: nicolaswe...@gmx.de
CC: llvm-bugs@lists.llvm.org
/pdbaltpath:%_PDB% is mentioned in most places that mention /pdbaltpath:, but
lld-link does the wrong thing with it:
$ bin/llvm-readobj -coff-debug-directory foo.exe | grep PDBF
PDBFileName: %_PDB%
(see e.g. https://stackoverflow.com/questions/7596628/strip-the-path-to-the-pdb
"For newer link.exe versions,...", issue 31371, and the docs at
https://docs.microsoft.com/en-us/cpp/build/reference/pdbaltpath-use-alternate-pdb-path?view=vs-2017
. Probably don't need to support full env var feature for cross builds if
nothing else (but might want to warn if seeing %FOO% where FOO isn't
whitelisted), but _PDB and _EXT might be nice.)
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