diff options
Diffstat (limited to 'make/linux.mk')
| -rw-r--r-- | make/linux.mk | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/make/linux.mk b/make/linux.mk new file mode 100644 index 000000000..710d34f0a --- /dev/null +++ b/make/linux.mk @@ -0,0 +1,88 @@ +############################################################# +# +# Linux kernel targets +# +# Note: If you have any patched to apply, create the directory +# sources/kernel-patches and put your patches in there and number +# them in the order you wish to apply them... i.e. +# +# sources/kernel-patches/001-my-special-stuff.bz2 +# sources/kernel-patches/003-gcc-Os.bz2 +# sources/kernel-patches/004_no-warnings.bz2 +# sources/kernel-patches/030-lowlatency-mini.bz2 +# sources/kernel-patches/031-lowlatency-fixes-5.bz2 +# sources/kernel-patches/099-shutup.bz2 +# +# these patched will all be applied by the patch-kernel.sh +# script (which will also abort the build if it finds rejects) +# -Erik +# +############################################################# +ifneq ($(filter $(TARGETS),linux),) + +LINUX_KERNEL=$(BUILD_DIR)/buildroot-kernel +LINUX_DIR=$(BUILD_DIR)/linux-2.4.20 +LINUX_SOURCE=linux-2.4.20.tar.bz2 +LINUX_SITE=http://ftp.us.kernel.org/pub/linux/kernel/v2.4 +LINUX_KCONFIG=$(SOURCE_DIR)/linux.config +LINUX_VERSION=$(shell grep -s UTS_RELEASE $(LINUX_DIR)/include/linux/version.h || echo '\#define UTS_RELEASE \"2.4.20\"' | cut -f 2 -d \" ) + +$(DL_DIR)/$(LINUX_SOURCE): + $(WGET) -P $(DL_DIR) $(LINUX_SITE)/$(LINUX_SOURCE) + +$(LINUX_DIR)/.dist: $(DL_DIR)/$(LINUX_SOURCE) + rm -rf $(LINUX_DIR) + bzcat $(DL_DIR)/$(LINUX_SOURCE) | tar -C $(BUILD_DIR) -xvf - + $(SOURCE_DIR)/patch-kernel.sh $(LINUX_DIR) $(SOURCE_DIR)/kernel-patches \ + touch $(LINUX_DIR)/.dist + +$(LINUX_DIR)/.configured: $(LINUX_DIR)/.dist $(LINUX_KCONFIG) + perl -i -p -e "s,^CROSS_COMPILE.*,\ + CROSS_COMPILE=$(STAGING_DIR)/bin/$(ARCH)-uclibc-,g;" \ + $(LINUX_DIR)/Makefile + cp $(LINUX_KCONFIG) $(LINUX_DIR)/.config + make -C $(LINUX_DIR) oldconfig include/linux/version.h + touch $(LINUX_DIR)/.configured + +$(LINUX_DIR)/.depend_done: $(LINUX_DIR)/.configured + make -C $(LINUX_DIR) dep + touch $(LINUX_DIR)/.depend_done + +$(LINUX_DIR)/arch/$(ARCH)/boot/bzImage: $(LINUX_DIR)/.depend_done + make -C $(LINUX_DIR) bzImage + make -C $(LINUX_DIR) modules + +$(LINUX_KERNEL): $(LINUX_DIR)/arch/$(ARCH)/boot/bzImage + cp -fa $(LINUX_DIR)/arch/$(ARCH)/boot/bzImage $(LINUX_KERNEL) + +$(TARGET_DIR)/lib/modules/$(LINUX_VERSION)/modules.dep: $(LINUX_KERNEL) + rm -rf $(TARGET_DIR)/lib/modules + rm -f $(TARGET_DIR)/sbin/cardmgr + make -C $(LINUX_DIR) INSTALL_MOD_PATH=$(TARGET_DIR) modules_install + (cd $(TARGET_DIR)/lib/modules; ln -s $(LINUX_VERSION)/kernel/drivers .) + +$(STAGING_DIR)/include/linux/version.h: $(LINUX_DIR)/include/linux/version.h + mkdir -p $(STAGING_DIR)/include + tar -ch -C $(LINUX_DIR)/include -f - linux | tar -xf - -C $(STAGING_DIR)/include/ + tar -ch -C $(LINUX_DIR)/include -f - asm | tar -xf - -C $(STAGING_DIR)/include/ + +linux: $(STAGING_DIR)/include/linux/version.h $(TARGET_DIR)/lib/modules/$(LINUX_VERSION)/modules.dep + +# Rename this so it is cleaned by default on a make clean +linuxclean: clean + rm -f $(LINUX_KERNEL) + -make -C $(LINUX_DIR) clean + +linux-dirclean: + rm -rf $(LINUX_DIR) + +############################################################# +# +# Setup the kernel headers, but don't compile anything for the target yet, +# since we still need to build a cross-compiler to do that little task for +# us... Try to work around this little chicken-and-egg problem.. +# +############################################################# +linux_headers: $(LINUX_DIR)/.configured + +endif |