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kumquat-buildroot/fs/common.mk

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target: Add new infrastructure for filesystem generation In order to avoid code duplication between the different filesystem generation makefile, we introduce a ROOTFS_TARGET macro. Documentation for this macro is contained in the patch. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-03-10 00:11:58 +01:00
#
# Macro that builds the needed Makefile target to create a root
# filesystem image.
#
# The following variable must be defined before calling this macro
#
# ROOTFS_$(FSTYPE)_CMD, the command that generates the root
# filesystem image. A single command is allowed. The filename of the
# filesystem image that it must generate is $$@.
#
# The following variables can optionaly be defined
#
# ROOTFS_$(FSTYPE)_DEPENDENCIES, the list of dependencies needed to
# build the root filesystem (usually host tools)
#
# ROOTFS_$(FSTYPE)_PRE_GEN_HOOKS, a list of hooks to call before
# generating the filesystem image
#
# ROOTFS_$(FSTYPE)_POST_GEN_HOOKS, a list of hooks to call after
# generating the filesystem image
#
linux: add support for initramfs In Buildroot, the kernel is built and installed *before* the root filesystems are built. This allows the root filesystem to correctly contain the kernel modules that have been installed. However, in the initramfs case, the root filesystem is part of the kernel. Therefore, the kernel should be built *after* the root filesystem (which, in the initramfs case simply builds a text file listing all files/directories/devices/symlinks that should be part of the initramfs). However, this isn't possible as the initramfs text file would lack all kernel modules. So, the solution choosen here is to keep the normal order: kernel is built before the root filesystem is generated, and to add a little quirk to retrigger a kernel compilation after the root filesystem generation. To do so, we add a ROOTFS_$(FSTYPE)_POST_TARGETS variable to the fs/common.mk infrastructure. This allows individual filesystems to set a target name that we should depend on *after* generating the root filesystem itself (contrary to normal ROOTFS_$(FSTYPE)_DEPENDENCIES, on which we depend *before* generating the root filesystem). The initramfs code in fs/initramfs/initramfs.mk uses this to add a dependency on 'linux26-rebuild-with-initramfs'. In linux/linux.mk, we do various things : * If BR2_TARGET_ROOTFS_INITRAMFS is enabled (i.e if initramfs is enabled as a root filesystem type), then we create an empty rootfs.initramfs file (remember that at this point, the root filesystem hasn't been generated) and we adjust the kernel configuration to include an initramfs. Of course, in the initial kernel build, this initramfs will be empty. * In the linux26-rebuild-with-initramfs target, we retrigger a compilation of the kernel image, after removing the initramfs in the kernel sources to make sure it gets properly rebuilt (we've experienced cases were modifying the rootfs.initramfs file wouldn't retrigger the generation of the initramfs at the kernel level). This is fairly quirky, but initramfs really is a special case, so in one way or another, we need a little quirk to solve its specialness. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-06-13 19:19:38 +02:00
# ROOTFS_$(FSTYPE)_POST_TARGETS, the list of targets that should be
# run after running the main filesystem target. This is useful for
# initramfs, to rebuild the kernel once the initramfs is generated.
#
target: Add new infrastructure for filesystem generation In order to avoid code duplication between the different filesystem generation makefile, we introduce a ROOTFS_TARGET macro. Documentation for this macro is contained in the patch. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-03-10 00:11:58 +01:00
# In terms of configuration option, this macro assumes that the
# BR2_TARGET_ROOTFS_$(FSTYPE) config option allows to enable/disable
# the generation of a filesystem image of a particular type. If
# configura options BR2_TARGET_ROOTFS_$(FSTYPE)_GZIP,
# BR2_TARGET_ROOTFS_$(FSTYPE)_BZIP2 or
# BR2_TARGET_ROOTFS_$(FSTYPE)_LZMA exist and are enabled, then the
# macro will automatically generate a compressed filesystem image.
FAKEROOT_SCRIPT = $(BUILD_DIR)/_fakeroot.fs
Allow several device tables and split in two parts our device table This allows to have a device table for all directories/files and another device table for the device files themselves. Both are needed for static /dev, but only the first one is needed when devtmpfs/mdev/udev are used. We take this opportunity to move the documentation of the device table format in a common location, package/makedevs/README. [Peter: simplify code slightly, fix indentation] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2011-03-02 14:52:54 +01:00
FULL_DEVICE_TABLE = $(BUILD_DIR)/_device_table.txt
System config: split static-dev device table setting into seperate option As discussed here: http://lists.busybox.net/pipermail/buildroot/2011-May/043251.html Add BR2_ROOTFS_STATIC_DEVICE_TABLE for the extra device table file(s) to create device nodes in /dev, rather than complicated logic in BR2_ROOTFS_DEVICE_TABLE, making it complicated to move between static and dynamic modes. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2011-07-25 00:09:33 +02:00
ROOTFS_DEVICE_TABLES = $(call qstrip,$(BR2_ROOTFS_DEVICE_TABLE)) \
$(call qstrip,$(BR2_ROOTFS_STATIC_DEVICE_TABLE))
target: Add new infrastructure for filesystem generation In order to avoid code duplication between the different filesystem generation makefile, we introduce a ROOTFS_TARGET macro. Documentation for this macro is contained in the patch. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-03-10 00:11:58 +01:00
define ROOTFS_TARGET_INTERNAL
fs: add extra deps to ROOTFS_*_DEPENDENCIES variables Instead of explicitly adding it both places it is used. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2010-11-19 15:05:20 +01:00
# extra deps
fs/common.mk: delay evaluation of variables This makes things easier to understand and more consistent with the pkg-infra. For example, it removes the need for '$$@' in the CMD variables of fs/*/*.mk. It also makes it possible to update the variables later, e.g. in the package override file. It also makes sure that the date will be recorded correctly in Yann E. Morin's patch that logs the MESSAGE macros to a file. The fs/*/*.mk must be updated as well because the '$@' shouldn't be quoted anymore in the CMD variables or the hooks. The $(eval ...) for the dependencies is redundant, because the $(ROOTFS_TARGET) variable is already eval'd. Note that it is only redundant if the evaluation of the uses of the variable is also delayed. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2013-01-20 15:03:13 +01:00
ROOTFS_$(2)_DEPENDENCIES += host-fakeroot host-makedevs $$(if $$(BR2_TARGET_ROOTFS_$(2)_LZMA),host-lzma)
fs: add extra deps to ROOTFS_*_DEPENDENCIES variables Instead of explicitly adding it both places it is used. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2010-11-19 15:05:20 +01:00
fs/common.mk: delay evaluation of variables This makes things easier to understand and more consistent with the pkg-infra. For example, it removes the need for '$$@' in the CMD variables of fs/*/*.mk. It also makes it possible to update the variables later, e.g. in the package override file. It also makes sure that the date will be recorded correctly in Yann E. Morin's patch that logs the MESSAGE macros to a file. The fs/*/*.mk must be updated as well because the '$@' shouldn't be quoted anymore in the CMD variables or the hooks. The $(eval ...) for the dependencies is redundant, because the $(ROOTFS_TARGET) variable is already eval'd. Note that it is only redundant if the evaluation of the uses of the variable is also delayed. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2013-01-20 15:03:13 +01:00
$$(BINARIES_DIR)/rootfs.$(1): $$(ROOTFS_$(2)_DEPENDENCIES)
@$$(call MESSAGE,"Generating root filesystem image rootfs.$(1)")
$$(foreach hook,$$(ROOTFS_$(2)_PRE_GEN_HOOKS),$$(call $$(hook))$$(sep))
rm -f $$(FAKEROOT_SCRIPT)
rm -f $$(TARGET_DIR_WARNING_FILE)
echo "chown -R 0:0 $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT)
ifneq ($$(ROOTFS_DEVICE_TABLES),)
cat $$(ROOTFS_DEVICE_TABLES) > $$(FULL_DEVICE_TABLE)
ifeq ($$(BR2_ROOTFS_DEVICE_CREATION_STATIC),y)
printf '$$(subst $$(sep),\n,$$(PACKAGES_DEVICES_TABLE))' >> $$(FULL_DEVICE_TABLE)
Add support for package-declared devices Add a way for packages to declare files they need instead of relying only on device tables, which creates files no matter if the package is indeed enabled, as we can see for busybox. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com> Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2012-01-11 18:53:38 +01:00
endif
fs/common.mk: delay evaluation of variables This makes things easier to understand and more consistent with the pkg-infra. For example, it removes the need for '$$@' in the CMD variables of fs/*/*.mk. It also makes it possible to update the variables later, e.g. in the package override file. It also makes sure that the date will be recorded correctly in Yann E. Morin's patch that logs the MESSAGE macros to a file. The fs/*/*.mk must be updated as well because the '$@' shouldn't be quoted anymore in the CMD variables or the hooks. The $(eval ...) for the dependencies is redundant, because the $(ROOTFS_TARGET) variable is already eval'd. Note that it is only redundant if the evaluation of the uses of the variable is also delayed. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2013-01-20 15:03:13 +01:00
printf '$$(subst $$(sep),\n,$$(PACKAGES_PERMISSIONS_TABLE))' >> $$(FULL_DEVICE_TABLE)
echo "$$(HOST_DIR)/usr/bin/makedevs -d $$(FULL_DEVICE_TABLE) $$(TARGET_DIR)" >> $$(FAKEROOT_SCRIPT)
target: Add new infrastructure for filesystem generation In order to avoid code duplication between the different filesystem generation makefile, we introduce a ROOTFS_TARGET macro. Documentation for this macro is contained in the patch. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-03-10 00:11:58 +01:00
endif
fs/common.mk: delay evaluation of variables This makes things easier to understand and more consistent with the pkg-infra. For example, it removes the need for '$$@' in the CMD variables of fs/*/*.mk. It also makes it possible to update the variables later, e.g. in the package override file. It also makes sure that the date will be recorded correctly in Yann E. Morin's patch that logs the MESSAGE macros to a file. The fs/*/*.mk must be updated as well because the '$@' shouldn't be quoted anymore in the CMD variables or the hooks. The $(eval ...) for the dependencies is redundant, because the $(ROOTFS_TARGET) variable is already eval'd. Note that it is only redundant if the evaluation of the uses of the variable is also delayed. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2013-01-20 15:03:13 +01:00
echo "$$(ROOTFS_$(2)_CMD)" >> $$(FAKEROOT_SCRIPT)
chmod a+x $$(FAKEROOT_SCRIPT)
$$(HOST_DIR)/usr/bin/fakeroot -- $$(FAKEROOT_SCRIPT)
cp support/misc/target-dir-warning.txt $$(TARGET_DIR_WARNING_FILE)
-@rm -f $$(FAKEROOT_SCRIPT) $$(FULL_DEVICE_TABLE)
$$(foreach hook,$$(ROOTFS_$(2)_POST_GEN_HOOKS),$$(call $$(hook))$$(sep))
target: Add new infrastructure for filesystem generation In order to avoid code duplication between the different filesystem generation makefile, we introduce a ROOTFS_TARGET macro. Documentation for this macro is contained in the patch. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-03-10 00:11:58 +01:00
ifeq ($$(BR2_TARGET_ROOTFS_$(2)_GZIP),y)
gzip -9 -c $$@ > $$@.gz
endif
ifeq ($$(BR2_TARGET_ROOTFS_$(2)_BZIP2),y)
bzip2 -9 -c $$@ > $$@.bz2
endif
ifeq ($$(BR2_TARGET_ROOTFS_$(2)_LZMA),y)
fs/common.mk: delay evaluation of variables This makes things easier to understand and more consistent with the pkg-infra. For example, it removes the need for '$$@' in the CMD variables of fs/*/*.mk. It also makes it possible to update the variables later, e.g. in the package override file. It also makes sure that the date will be recorded correctly in Yann E. Morin's patch that logs the MESSAGE macros to a file. The fs/*/*.mk must be updated as well because the '$@' shouldn't be quoted anymore in the CMD variables or the hooks. The $(eval ...) for the dependencies is redundant, because the $(ROOTFS_TARGET) variable is already eval'd. Note that it is only redundant if the evaluation of the uses of the variable is also delayed. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2013-01-20 15:03:13 +01:00
$$(LZMA) -9 -c $$@ > $$@.lzma
target: Add new infrastructure for filesystem generation In order to avoid code duplication between the different filesystem generation makefile, we introduce a ROOTFS_TARGET macro. Documentation for this macro is contained in the patch. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-03-10 00:11:58 +01:00
endif
fs: rename make targets to match package/ convention Use rootfs-* rather than *-root, to match the convention used under package/ and which fits with the ROOTFS_*_ variables. This will also help with the host dependencies. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2010-11-19 15:01:13 +01:00
rootfs-$(1)-show-depends:
fs/common.mk: delay evaluation of variables This makes things easier to understand and more consistent with the pkg-infra. For example, it removes the need for '$$@' in the CMD variables of fs/*/*.mk. It also makes it possible to update the variables later, e.g. in the package override file. It also makes sure that the date will be recorded correctly in Yann E. Morin's patch that logs the MESSAGE macros to a file. The fs/*/*.mk must be updated as well because the '$@' shouldn't be quoted anymore in the CMD variables or the hooks. The $(eval ...) for the dependencies is redundant, because the $(ROOTFS_TARGET) variable is already eval'd. Note that it is only redundant if the evaluation of the uses of the variable is also delayed. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2013-01-20 15:03:13 +01:00
@echo $$(ROOTFS_$(2)_DEPENDENCIES)
Add a <fs>-root-show-depends target Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-05-13 19:20:21 +02:00
fs/common.mk: delay evaluation of variables This makes things easier to understand and more consistent with the pkg-infra. For example, it removes the need for '$$@' in the CMD variables of fs/*/*.mk. It also makes it possible to update the variables later, e.g. in the package override file. It also makes sure that the date will be recorded correctly in Yann E. Morin's patch that logs the MESSAGE macros to a file. The fs/*/*.mk must be updated as well because the '$@' shouldn't be quoted anymore in the CMD variables or the hooks. The $(eval ...) for the dependencies is redundant, because the $(ROOTFS_TARGET) variable is already eval'd. Note that it is only redundant if the evaluation of the uses of the variable is also delayed. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2013-01-20 15:03:13 +01:00
rootfs-$(1): $$(BINARIES_DIR)/rootfs.$(1) $$(ROOTFS_$(2)_POST_TARGETS)
target: Add new infrastructure for filesystem generation In order to avoid code duplication between the different filesystem generation makefile, we introduce a ROOTFS_TARGET macro. Documentation for this macro is contained in the patch. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-03-10 00:11:58 +01:00
ifeq ($$(BR2_TARGET_ROOTFS_$(2)),y)
fs: rename make targets to match package/ convention Use rootfs-* rather than *-root, to match the convention used under package/ and which fits with the ROOTFS_*_ variables. This will also help with the host dependencies. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2010-11-19 15:01:13 +01:00
TARGETS += rootfs-$(1)
target: Add new infrastructure for filesystem generation In order to avoid code duplication between the different filesystem generation makefile, we introduce a ROOTFS_TARGET macro. Documentation for this macro is contained in the patch. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-03-10 00:11:58 +01:00
endif
endef
define ROOTFS_TARGET
$(call ROOTFS_TARGET_INTERNAL,$(1),$(call UPPERCASE,$(1)))
target/common: do not use IMAGE Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-03-10 22:11:21 +01:00
endef
Move all filesystem generation code to fs/ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2010-03-10 22:30:06 +01:00
include fs/*/*.mk
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