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[build] Improve overlay check in Makefile (#3050)

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Some kernels are built with overlayfs as a builtin and not a module.
For these the check via lsmod currently fails.
This improvement now checks the kernel configuration for the
CONFIG_OVERLAY_FS entry. Depending on the OS and kernel version the
build configuration can be in multiple places.
This commit is contained in:
Samuel Angebault 2019-06-20 09:20:34 -07:00 committed by lguohan
parent 1bcd54d38c
commit e680892f39
1 changed files with 5 additions and 1 deletions
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6
Makefile.work
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@ -61,7 +61,11 @@ SLAVE_IMAGE = sonic-slave-$(USER)
SLAVE_DIR = sonic-slave
endif
OVERLAY_MODULE_CHECK := lsmod | grep "^overlay " > /dev/null 2>&1 || (echo "ERROR: Module 'overlay' not loaded. Try running 'sudo modprobe overlay'."; exit 1)
OVERLAY_MODULE_CHECK := \
lsmod | grep -q "^overlay " &>/dev/null || \
zgrep -q 'CONFIG_OVERLAY_FS=y' /proc/config.gz &>/dev/null || \
grep -q 'CONFIG_OVERLAY_FS=y' /boot/config-$(shell uname -r) &>/dev/null || \
(echo "ERROR: Module 'overlay' not loaded. Try running 'sudo modprobe overlay'."; exit 1)
BUILD_TIMESTAMP := $(shell date +%Y%m%d\.%H%M%S)