c4dce0ae0f
The default inittab files added by busybox and sysvinit run 'swapon -a'
during init and 'swapoff -a' during shutdown.
But, the swapon/swapoff programs are not guaranteed to be
available. For the busybox versions, it is steered by
CONFIG_SWAPON/CONFIG_SWAPOFF. For the util-linux versions, it is steered by
BR2_PACKAGE_UTIL_LINUX_BINARIES.
In a case where swapon/swapoff is not available but the inittab tries to
execute them, the boot log would be polluted by error messages like:
swapon: not found
Avoid this by commenting out the swapon/swapoff lines if the swapon/swapoff
binaries are not available.
Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
[Peter: test with -x]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
115 lines
3.5 KiB
Makefile
115 lines
3.5 KiB
Makefile
################################################################################
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#
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# system-related variables and macros
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#
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################################################################################
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# This file exists to define variables and macros that pertain to the system
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# settings, like rsyncing a directory for skeletons, or the /lib vs. /usr/lib
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# symlink handling.
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#
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# Some variables may be used as conditions in Makefile code, so they must be
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# defined properly before they are used; this file is included early, before
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# any package is.
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# - SYSTEM_USR_SYMLINKS_OR_DIRS
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# create /lib, /bin and /sbin, either as directories or as symlinks to
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# their /usr conterparts
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#
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# - SYSTEM_RSYNC
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# rsync $(1) to $(2), with proper exclusions and rights
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#
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# - SYSTEM_LIB_SYMLINK
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# create the appropriate /lib{32,64} symlinks
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#
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# - SYSTEM_GETTY_PORT
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# - SYSTEM_GETTY_BAUDRATE
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# - SYSTEM_GETTY_TERM
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# - SYSTEM_GETTY_OPTIONS
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# the un-quoted getty setting
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#
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# - SYSTEM_REMOUNT_ROOT_INITTAB
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# set inittab to remount root read-write or read-only
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#
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# This function handles the merged or non-merged /usr cases
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ifeq ($(BR2_ROOTFS_MERGED_USR),y)
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define SYSTEM_USR_SYMLINKS_OR_DIRS
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ln -snf usr/bin $(1)/bin
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ln -snf usr/sbin $(1)/sbin
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ln -snf usr/lib $(1)/lib
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endef
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else
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define SYSTEM_USR_SYMLINKS_OR_DIRS
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$(INSTALL) -d -m 0755 $(1)/bin
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$(INSTALL) -d -m 0755 $(1)/sbin
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$(INSTALL) -d -m 0755 $(1)/lib
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endef
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endif
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# This function rsyncs the skeleton directory in $(1) to the destination
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# in $(2), which should be either $(TARTGET_DIR) or $(STAGING_DIR)
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define SYSTEM_RSYNC
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rsync -a --ignore-times $(RSYNC_VCS_EXCLUSIONS) \
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--chmod=u=rwX,go=rX --exclude .empty --exclude '*~' \
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$(1)/ $(2)/
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endef
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# Make a symlink lib32->lib or lib64->lib as appropriate.
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# MIPS64/n32 requires lib32 even though it's a 64-bit arch. However, since gcc
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# 5.1.0 internal compiler paths in sysroot are relative to lib64, so we must
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# create both.
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# $(1): base dir (either staging or target)
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ifeq ($(BR2_MIPS_NABI32),y)
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define SYSTEM_LIB_SYMLINK
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ln -snf lib $(1)/lib64
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ln -snf lib $(1)/usr/lib64
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ln -snf lib $(1)/lib32
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ln -snf lib $(1)/usr/lib32
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endef
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else ifeq ($(BR2_ARCH_IS_64),y)
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define SYSTEM_LIB_SYMLINK
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ln -snf lib $(1)/lib64
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ln -snf lib $(1)/usr/lib64
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endef
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else
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define SYSTEM_LIB_SYMLINK
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ln -snf lib $(1)/lib32
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ln -snf lib $(1)/usr/lib32
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endef
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endif
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SYSTEM_GETTY_PORT = $(call qstrip,$(BR2_TARGET_GENERIC_GETTY_PORT))
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SYSTEM_GETTY_BAUDRATE = $(call qstrip,$(BR2_TARGET_GENERIC_GETTY_BAUDRATE))
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SYSTEM_GETTY_TERM = $(call qstrip,$(BR2_TARGET_GENERIC_GETTY_TERM))
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SYSTEM_GETTY_OPTIONS = $(call qstrip,$(BR2_TARGET_GENERIC_GETTY_OPTIONS))
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ifeq ($(BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW),y)
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# Find commented line, if any, and remove leading '#'s
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define SYSTEM_REMOUNT_ROOT_INITTAB
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$(SED) '/^#.*-o remount,rw \/$$/s~^#\+~~' $(TARGET_DIR)/etc/inittab
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endef
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else
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# Find uncommented line, if any, and add a leading '#'
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define SYSTEM_REMOUNT_ROOT_INITTAB
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$(SED) '/^[^#].*-o remount,rw \/$$/s~^~#~' $(TARGET_DIR)/etc/inittab
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endef
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endif
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define SYSTEM_UPDATE_SWAPON_SWAPOFF_INITTAB
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if [ -x $(TARGET_DIR)/sbin/swapon ]; then \
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$(SED) '\%:/sbin/swapon%s/^#*//' $(TARGET_DIR)/etc/inittab ; \
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else \
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$(SED) '\%:/sbin/swapon%s/^#*/#/' $(TARGET_DIR)/etc/inittab ; \
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fi
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if [ -x $(TARGET_DIR)/sbin/swapoff ]; then \
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$(SED) '\%:/sbin/swapoff%s/^#*//' $(TARGET_DIR)/etc/inittab ; \
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else \
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$(SED) '\%:/sbin/swapoff%s/^#*/#/' $(TARGET_DIR)/etc/inittab ; \
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fi
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endef
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ifeq ($(BR_BUILDING)$(BR2_SYSTEM_DEFAULT_PATH),y"")
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$(error BR2_SYSTEM_DEFAULT_PATH can't be empty)
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endif
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