diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -818,6 +818,7 @@
 paths, for example if also specified with -isystem, the -I option
 will be ignored}]>;
 def L : JoinedOrSeparate<["-"], "L">, Flags<[RenderJoined]>, Group<Link_Group>,
+    Visibility<[ClangOption, FlangOption]>,
     MetaVarName<"<dir>">, HelpText<"Add directory to library search path">;
 def MD : Flag<["-"], "MD">, Group<M_Group>,
     HelpText<"Write a depfile containing user and system headers">;
diff --git a/flang/test/Driver/driver-help-hidden.f90 b/flang/test/Driver/driver-help-hidden.f90
--- a/flang/test/Driver/driver-help-hidden.f90
+++ b/flang/test/Driver/driver-help-hidden.f90
@@ -102,6 +102,7 @@
 ! CHECK-NEXT: --help-hidden           Display help for hidden options
 ! CHECK-NEXT: -help                   Display available options
 ! CHECK-NEXT: -I <dir>                Add directory to the end of the list of include search paths
+! CHECK-NEXT: -L <dir>                Add directory to library search path
 ! CHECK-NEXT: -march=<value>          For a list of available architectures for the target use '-mcpu=help'
 ! CHECK-NEXT: -mcpu=<value>           For a list of available CPUs for the target use '-mcpu=help'
 ! CHECK-NEXT: -mllvm=<arg>            Alias for -mllvm
diff --git a/flang/test/Driver/driver-help.f90 b/flang/test/Driver/driver-help.f90
--- a/flang/test/Driver/driver-help.f90
+++ b/flang/test/Driver/driver-help.f90
@@ -90,6 +90,7 @@
 ! HELP-NEXT: --help-hidden           Display help for hidden options
 ! HELP-NEXT: -help                   Display available options
 ! HELP-NEXT: -I <dir>                Add directory to the end of the list of include search paths
+! HELP-NEXT: -L <dir>                Add directory to library search path
 ! HELP-NEXT: -march=<value>          For a list of available architectures for the target use '-mcpu=help'
 ! HELP-NEXT: -mcpu=<value>           For a list of available CPUs for the target use '-mcpu=help'
 ! HELP-NEXT: -mllvm=<arg>            Alias for -mllvm
diff --git a/flang/test/Driver/misc-flags.f90 b/flang/test/Driver/misc-flags.f90
--- a/flang/test/Driver/misc-flags.f90
+++ b/flang/test/Driver/misc-flags.f90
@@ -7,6 +7,9 @@
 ! Make sure that `-fuse-ld' is "visible" to Flang's driver
 ! RUN: %flang -fuse-ld= -### %s
 
+! Make sure that `-L' is "visible" to Flang's driver
+! RUN: %flang -L/ -### %s
+
 program hello
   write(*,*), "Hello world!"
 end program hello