diff options
| author | Martin Storsjo <martin@martin.st> | 2019-01-05 10:43:59 +0000 |
|---|---|---|
| committer | Martin Storsjo <martin@martin.st> | 2019-01-05 10:43:59 +0000 |
| commit | 6e955867f62741238eb5e1bea9c3dbf173ddd503 (patch) | |
| tree | 981324d4381ae03985446ade1568fc945d477f6b /lld | |
| parent | fbcdc2beee9478261b95b162034c3c7582d1413e (diff) | |
[MinGW] Expand comment for MinGW driver. NFC.
Originally authored by Rui Ueyama.
Differential Revision: https://reviews.llvm.org/D53031
Diffstat (limited to 'lld')
| -rw-r--r-- | lld/MinGW/Driver.cpp | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/lld/MinGW/Driver.cpp b/lld/MinGW/Driver.cpp index d682baf592a..def769bb912 100644 --- a/lld/MinGW/Driver.cpp +++ b/lld/MinGW/Driver.cpp @@ -6,9 +6,27 @@ // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// -/// -/// GNU ld style linker driver for COFF currently supporting mingw-w64. -/// +// +// MinGW is a GNU development environment for Windows. It consists of GNU +// tools such as GCC and GNU ld. Unlike Cygwin, there's no POSIX-compatible +// layer, as it aims to be a native development toolchain. +// +// lld/MinGW is a drop-in replacement for GNU ld/MinGW. +// +// Being a native development tool, a MinGW linker is not very different from +// Microsoft link.exe, so a MinGW linker can be implemented as a thin wrapper +// for lld/COFF. This driver takes Unix-ish command line options, translates +// them to Windows-ish ones, and then passes them to lld/COFF. +// +// When this driver calls the lld/COFF driver, it passes a hidden option +// "-lldmingw" along with other user-supplied options, to run the lld/COFF +// linker in "MinGW mode". +// +// There are subtle differences between MS link.exe and GNU ld/MinGW, and GNU +// ld/MinGW implements a few GNU-specific features. Such features are directly +// implemented in lld/COFF and enabled only when the linker is running in MinGW +// mode. +// //===----------------------------------------------------------------------===// #include "lld/Common/Driver.h" |