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[MinGW] Allow requesting PDB output without giving a file name

Description

[MinGW] Allow requesting PDB output without giving a file name

When integrating PDB output in mingw targeting build systems, it
might be a lot of extra work to specify unique file names for
the pdb output. Therefore allow omitting the actual file name
and let it implicitly be the same name as the linker output, with
a pdb extension.

As the current form of the pdb option takes a separate parameter value,
e.g. "-pdb out.pdb", it is impractical to leave out the parameter value.

Therefore, introduce a second syntax for the option, with an equals
sign, like -pdb=out.pdb, where the value easily can be omitted.

The form -pdb= for requesting pdb files with an implicit name should
work fine, even though it looks a bit unconventional in that form.

Differential Revision: https://reviews.llvm.org/D62004

Details

Committed
mstorsjoMay 17 2019, 4:07 AM
Differential Revision
D62004: [LLD] [MinGW] Allow requesting PDB output without giving a file name
Parents
rL361013: [ELF][test] Reorganize some R_*_NONE tests
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