Makefile: Add support for compressed modules

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/Makefile b/Makefile
index b975bc769a333c92dd6f884cb76d29919c128200..33f43dfe14d5da6f9cd7c57b60f8ee1971201bd4 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -14,12 +14,20 @@ DRIVER := it87
 # Directory below /lib/modules/$(TARGET)/kernel into which to install
 # the module:
 MOD_SUBDIR = drivers/hwmon
+MODDESTDIR=$(KERNEL_MODULES)/kernel/$(MOD_SUBDIR)
 
 obj-m  := $(patsubst %,%.o,$(DRIVER))
 obj-ko  := $(patsubst %,%.ko,$(DRIVER))
 
 MAKEFLAGS += --no-print-directory
 
+ifneq ("","$(wildcard $(MODDESTDIR)/*.ko.gz)")
+COMPRESS_GZIP := y
+endif
+ifneq ("","$(wildcard $(MODDESTDIR)/*.ko.xz)")
+COMPRESS_XZ := y
+endif
+
 .PHONY: all install modules modules_install clean
 
 all: modules
@@ -32,6 +40,12 @@ modules clean:
 install: modules_install
 
 modules_install:
-       mkdir -p $(KERNEL_MODULES)/kernel/$(MOD_SUBDIR)
-       cp $(DRIVER).ko $(KERNEL_MODULES)/kernel/$(MOD_SUBDIR)/
+       mkdir -p $(MODDESTDIR)
+       cp $(DRIVER).ko $(MODDESTDIR)/
+ifeq ($(COMPRESS_GZIP), y)
+       @gzip -f $(MODDESTDIR)/$(DRIVER).ko
+endif
+ifeq ($(COMPRESS_XZ), y)
+       @xz -f $(MODDESTDIR)/$(DRIVER).ko
+endif
        depmod -a -F $(SYSTEM_MAP) $(TARGET)