[m-rev.] diff: do not pass GCC flags to MSVC

[Julien Fischer]

Do not pass GCC flags to MSVC.

compiler/Mmakefile:
      As above.

Julien.

diff --git a/compiler/Mmakefile b/compiler/Mmakefile
index 449bfe0..bcd611b 100644
--- a/compiler/Mmakefile
+++ b/compiler/Mmakefile
@@ -65,14 +65,15 @@ endif

  # The default C stack size of 1Mb on Windows is not enough to compile the
  # standard library in the hlc.gc grade using a Mercury compiler built in
-# the hlc.gc grade with MinGW64.
-# XXX We only want to pass --stack to the linker for MinGW64 GCC.
-# When we support the 64-bit version of the Microsoft toolchain, we will
+# the hlc.gc grade with the MinGW64 GCC.
+# XXX When we support the 64-bit version of the Microsoft toolchain, we will
  # need to do something different here.
-#
+# XXX what about clang?
+ifneq ("$(USING_MICROSOFT_CL_COMPILER)", "yes")
  ifneq ("$(findstring x86_64-w64-mingw32,$(FULLARCH))","")
  LDFLAGS += -Wl,--stack=8388608
  endif
+endif

  #-----------------------------------------------------------------------------#