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[clang] [MinGW] Add an implicit .exe suffix even when crosscompiling 

GCC 8 changed behaviour wrt this, and made it consistent for cross
compilation cases. While it's a change, it's a more sensible behaviour
going forward.

Differential Revision: https://reviews.llvm.org/D88005
This commit is contained in:
Martin Storsjö 2020-09-15 12:35:07 +03:00
parent 2697d138a6
commit ead7c3cdc3
3 changed files with 4 additions and 21 deletions
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10
clang/lib/Driver/ToolChains/MinGW.cpp
View File

@ -164,17 +164,13 @@ void tools::MinGW::Linker::ConstructJob(Compilation &C, const JobAction &JA,
CmdArgs.push_back("-o");
const char *OutputFile = Output.getFilename();
// GCC implicitly adds an .exe extension if it is given an output file name
// that lacks an extension. However, GCC only does this when actually
// running on windows, not when operating as a cross compiler. As some users
// have come to rely on this behaviour, try to replicate it.
#ifdef _WIN32
// that lacks an extension.
// GCC used to do this only when the compiler itself runs on windows, but
// since GCC 8 it does the same when cross compiling as well.
if (!llvm::sys::path::has_extension(OutputFile))
CmdArgs.push_back(Args.MakeArgString(Twine(OutputFile) + ".exe"));
else
CmdArgs.push_back(OutputFile);
#else
CmdArgs.push_back(OutputFile);
#endif
Args.AddAllArgs(CmdArgs, options::OPT_e);
// FIXME: add -N, -n flags

9
clang/test/Driver/mingw-implicit-extension-cross.c
View File

@ -1,9 +0,0 @@
// Test how an implicit .exe extension is added. If not running the compiler
// on windows, no implicit extension is added. (Therefore, this test is skipped
// when running on windows.)
// UNSUPPORTED: system-windows
// RUN: %clang -target i686-windows-gnu -### --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -o outputname 2>&1 | FileCheck %s
// CHECK: "-o" "outputname"

6
clang/test/Driver/mingw-implicit-extension-windows.c
View File

@ -1,8 +1,4 @@
// Test how an implicit .exe extension is added. If running the compiler
// on windows, an implicit extension is added if none is provided in the
// given name. (Therefore, this test is skipped when not running on windows.)
// REQUIRES: system-windows
// Test how an implicit .exe extension is added.
// RUN: %clang -target i686-windows-gnu -### --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -o outputname 2>&1 | FileCheck %s --check-prefix=CHECK-OUTPUTNAME-EXE