kbuild: run depmod when installing external modules

Following patch enables depmod support when installing external modules.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

1 files changed, 20 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index fdb3dac3e70..c55d0f1b85e 100644
--- a/Makefile
+++ b/Makefile
@@ -1147,9 +1147,28 @@ modules: $(module-dirs)
         $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
 
 .PHONY: modules_install
-modules_install:
+modules_install: _emodinst_ _emodinst_post
+        
+install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)        
+.PHONY: _emodinst_
+_emodinst_:
+        $(Q)rm -rf $(MODLIB)/$(install-dir)
+        $(Q)mkdir -p $(MODLIB)/$(install-dir)
         $(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modinst
 
+# Run depmod only is we have System.map and depmod is executable
+quiet_cmd_depmod = DEPMOD  $(KERNELRELEASE)
+      cmd_depmod = if [ -r System.map -a -x $(DEPMOD) ]; then \
+                      $(DEPMOD) -ae -F System.map             \
+                      $(if $(strip $(INSTALL_MOD_PATH)),      \
+                      -b $(INSTALL_MOD_PATH) -r)              \
+                      $(KERNELRELEASE);                       \
+                   fi
+
+.PHONY: _emodinst_post
+_emodinst_post: _emodinst_
+        $(call cmd,depmod)
+
 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
 
 .PHONY: $(clean-dirs) clean