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[MinGW] Expand comment for MinGW driver. NFC. 

Originally authored by Rui Ueyama.

Differential Revision: https://reviews.llvm.org/D53031

llvm-svn: 350464
This commit is contained in:
Martin Storsjo 2019-01-05 10:43:59 +00:00
parent 65038515ee
commit 5abe10ac21
1 changed files with 21 additions and 3 deletions
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24
lld/MinGW/Driver.cpp
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@ -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"