mk: Compile C code on MSVC with /MD #25995
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On MSVC there are two ways that the CRT can be linked, either statically or dynamically. Each object file produced by the compiler is compiled against msvcrt (a dll) or libcmt (a static library). When the linker is dealing with more than one object file, it requires that all object files link to the same CRT, or else the linker will spit out some errors. For now, compile code with `-MD` as it seems to appear more often in C libraries so we'll stick with the same trend.
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r? @nrc (rust_highfive has picked a reviewer for you, use r? to override) |
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That said, if someone can get some actual numbers on performance differences with |
alexcrichton
changed the title
alexcrichton
changed the title
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Aha! @retep998 is correct, and I have more investigation to do locally. I have removed that commit now. |
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@bors r+ |
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📌 Commit cb7d914 has been approved by |
On MSVC there are two ways that the CRT can be linked, either statically or dynamically. Each object file produced by the compiler is compiled against msvcrt (a dll) or libcmt (a static library). When the linker is dealing with more than one object file, it requires that all object files link to the same CRT, or else the linker will spit out some errors. For now, compile code with `-MD` as it seems to appear more often in C libraries so we'll stick with the same trend.
On MSVC there are two ways that the CRT can be linked, either statically or
dynamically. Each object file produced by the compiler is compiled against
msvcrt (a dll) or libcmt (a static library). When the linker is dealing with
more than one object file, it requires that all object files link to the same
CRT, or else the linker will spit out some errors.
For now, compile code with
-MDas it seems to appear more often in C librariesso we'll stick with the same trend.