diff --git a/.gitmodules b/.gitmodules
index 083d51db0..d4ba87d27 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -212,3 +212,6 @@
 [submodule "src/external/screen"]
 	path = src/external/screen
 	url = ../darling-screen.git
+[submodule "src/external/doc_cmds"]
+	path = src/external/doc_cmds
+	url = ../darling-doc_cmds.git
diff --git a/platform-include/zconf.h b/platform-include/zconf.h
new file mode 120000
index 000000000..72c526009
--- /dev/null
+++ b/platform-include/zconf.h
@@ -0,0 +1 @@
+../src/external/zlib/zconf.h
\ No newline at end of file
diff --git a/platform-include/zlib.h b/platform-include/zlib.h
new file mode 120000
index 000000000..4c673f7ff
--- /dev/null
+++ b/platform-include/zlib.h
@@ -0,0 +1 @@
+../src/external/zlib/zlib.h
\ No newline at end of file
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3c9f6f0c6..1b16cb083 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -185,6 +185,7 @@ add_subdirectory(external/mail_cmds)
 add_subdirectory(external/screen)
 add_subdirectory(unxip)
 add_subdirectory(external/zsh)
+add_subdirectory(external/doc_cmds)
 add_subdirectory(external/libcxxabi)
 add_subdirectory(external/libcxx)
 
diff --git a/src/external/doc_cmds b/src/external/doc_cmds
new file mode 160000
index 000000000..cefacf002
--- /dev/null
+++ b/src/external/doc_cmds
@@ -0,0 +1 @@
+Subproject commit cefacf002d87f229622387fbb9301540766c048b
diff --git a/src/external/man b/src/external/man
index 2b55e30c9..6a2df29fa 160000
--- a/src/external/man
+++ b/src/external/man
@@ -1 +1 @@
-Subproject commit 2b55e30c9ff80f1030416bcc4a1b1aba125895cb
+Subproject commit 6a2df29faa8613d651fd6af59c7d2584bc157d7a