[MinGW] Support creating DLLs with a def file

Differential Revision: https://reviews.llvm.org/D37761 llvm-svn: 313125
llvm · Sep 13, 2017 · 064b0fa · 064b0fa
1 parent 32e1626
commit 064b0fa
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/lld/MinGW/Driver.cpp b/lld/MinGW/Driver.cpp
@@ -177,7 +177,10 @@ bool mingw::link(ArrayRef<const char *> ArgsArr, raw_ostream &Diag) {
                                OPT_no_whole_archive)) {
     switch (A->getOption().getID()) {
     case OPT_INPUT:
-      Add(Prefix + StringRef(A->getValue()));
+      if (StringRef(A->getValue()).endswith(".def"))
+        Add("-def:" + StringRef(A->getValue()));
+      else
+        Add(Prefix + StringRef(A->getValue()));
       break;
     case OPT_l:
       Add(Prefix +

diff --git a/lld/test/MinGW/driver.test b/lld/test/MinGW/driver.test
@@ -26,6 +26,9 @@ RUN: ld.lld -### foo.o -m i386pep -shared | FileCheck -check-prefix=SHARED %s
 SHARED:      -out:a.dll
 SHARED-SAME: -dll
 
+RUN: ld.lld -### foo.o -m i386pep -shared foo.def | FileCheck -check-prefix=DEF %s
+DEF: -def:foo.def
+
 RUN: ld.lld -### foo.o -m i386pep -o bar.exe | FileCheck -check-prefix=OUT %s
 OUT: -out:bar.exe