diff --git a/compilers.py b/compilers.py
index 00b2ecfcf..eea79d070 100644
--- a/compilers.py
+++ b/compilers.py
@@ -177,6 +177,9 @@ class Compiler():
     def has_function(self, *args, **kwargs):
         raise EnvironmentException('Language %s does not support function checks.' % self.language)
 
+    def unixtype_flags_to_native(self, args):
+        return args
+
 class CCompiler(Compiler):
     def __init__(self, exelist, version, is_cross, exe_wrapper=None):
         super().__init__(exelist, version)
@@ -1055,7 +1058,6 @@ class VisualStudioCCompiler(CCompiler):
     vs2010_always_args = ['/nologo', '/showIncludes']
     vs2013_always_args = ['/nologo', '/showIncludes', '/FS']
 
-
     def __init__(self, exelist, version, is_cross, exe_wrap):
         CCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
         self.id = 'msvc'
@@ -1157,6 +1159,14 @@ class VisualStudioCCompiler(CCompiler):
     def get_option_link_args(self, options):
         return options['c_winlibs'].value
 
+    def unixtype_flags_to_native(self, args):
+        result = []
+        for i in args:
+            if i.startswith('-L'):
+                i = '/LIBPATH:' + i[2:]
+            result.append(i)
+        return result
+
 class VisualStudioCPPCompiler(VisualStudioCCompiler):
     def __init__(self, exelist, version, is_cross, exe_wrap):
         VisualStudioCCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
@@ -1768,6 +1778,9 @@ class VisualStudioLinker():
     def get_option_link_args(self, options):
         return []
 
+    def unixtype_flags_to_native(self, args):
+        return args
+
 class ArLinker():
     std_args = ['csr']
 
@@ -1804,3 +1817,6 @@ class ArLinker():
 
     def get_option_link_args(self, options):
         return []
+
+    def unixtype_flags_to_native(self, args):
+        return args
diff --git a/dependencies.py b/dependencies.py
index 165fd2f69..7aa2464a1 100644
--- a/dependencies.py
+++ b/dependencies.py
@@ -539,10 +539,7 @@ class BoostDependency(Dependency):
     def get_win_link_args(self):
         args = []
         if self.boost_root:
-            # FIXME, these are in gcc format, not msvc.
-            # On the other hand, so are the args that
-            # pkg-config returns.
-            args.append('/LIBPATH:' + self.libdir)
+            args.append('-L' + self.libdir)
         for module in self.requested_modules:
             module = BoostDependency.name2lib.get(module, module)
             if module in self.lib_modules_mt:
diff --git a/ninjabackend.py b/ninjabackend.py
index 749f35dd1..c465f7cbb 100644
--- a/ninjabackend.py
+++ b/ninjabackend.py
@@ -1675,6 +1675,7 @@ rule FORTRAN_DEP_HACK
         if self.environment.coredata.get_builtin_option('coverage'):
             commands += linker.get_coverage_link_args()
         commands += extra_args
+        commands = linker.unixtype_flags_to_native(commands)
         dep_targets = [self.get_dependency_filename(t) for t in dependencies]
         dep_targets += [os.path.join(self.environment.source_dir,
                                      target.subdir, t) for t in target.link_depends]