build: allow rootfs builds w/o git or VERSION file deps

We set the VERSION variable consistently across Makefiles to
'unknown'  if the file is empty or not present.
We also use git commands consistently for calculating the COMMIT,
COMMIT_NO variables, not erroring out when building outside of
a git repository.
In create_summary_file we also account for a missing/empty VERSION
file.
This makes e.g. the UVM build process in an environment where we
build outside of git with a minimal/reduced set of files smoother.

Signed-off-by: Manuel Huber <mahuber@microsoft.com>

src/agent/Makefile

@@ -15,7 +15,7 @@ PROJECT_COMPONENT = kata-agent
 TARGET = $(PROJECT_COMPONENT)
 
 VERSION_FILE := ./VERSION
-VERSION := $(shell grep -v ^\# $(VERSION_FILE))
+VERSION := $(shell grep -v ^\# $(VERSION_FILE) 2>/dev/null || echo "unknown")
 COMMIT_NO := $(shell git rev-parse HEAD 2>/dev/null || true)
 COMMIT := $(if $(shell git status --porcelain --untracked-files=no 2>/dev/null || true),${COMMIT_NO}-dirty,${COMMIT_NO})
 COMMIT_MSG = $(if $(COMMIT),$(COMMIT),unknown)

src/runtime-rs/Makefile

@@ -358,7 +358,7 @@ SOURCES := \
   Cargo.toml
 
 VERSION_FILE := ./VERSION
-VERSION := $(shell grep -v ^\# $(VERSION_FILE))
+VERSION := $(shell grep -v ^\# $(VERSION_FILE) 2>/dev/null || echo "unknown")
 COMMIT_NO := $(shell git rev-parse HEAD 2>/dev/null || true)
 COMMIT := $(if $(shell git status --porcelain --untracked-files=no 2>/dev/null || true),${COMMIT_NO}-dirty,${COMMIT_NO})
 COMMIT_MSG = $(if $(COMMIT),$(COMMIT),unknown)

src/tools/kata-ctl/Makefile

@@ -13,7 +13,7 @@ TARGET = $(PROJECT_COMPONENT)
 INSTALL_PATH = $(HOME)/.cargo
 
 VERSION_FILE := ./VERSION
-export VERSION := $(shell grep -v ^\# $(VERSION_FILE))
+export VERSION := $(shell grep -v ^\# $(VERSION_FILE) 2>/dev/null || echo "unknown")
 COMMIT_NO := $(shell git rev-parse HEAD 2>/dev/null || true)
 COMMIT_NO_SHORT := $(shell git rev-parse --short HEAD 2>/dev/null || true)
 export COMMIT := $(if $(shell git status --porcelain --untracked-files=no 2>/dev/null || true),${COMMIT_NO}-dirty,${COMMIT_NO})

src/tools/log-parser/Makefile

@@ -7,9 +7,10 @@
 TARGET = kata-log-parser
 SOURCES = $(shell find . 2>&1 | grep -E '.*\.go$$')
 
-VERSION := ${shell cat ./VERSION}
+VERSION_FILE := ./VERSION
-COMMIT_NO := $(shell git rev-parse HEAD 2> /dev/null || true)
+VERSION := $(shell grep -v ^\# $(VERSION_FILE) 2>/dev/null || echo "unknown")
-COMMIT := $(if $(shell git status --porcelain --untracked-files=no),"${COMMIT_NO}-dirty","${COMMIT_NO}")
+COMMIT_NO := $(shell git rev-parse HEAD 2>/dev/null || true)
+COMMIT := $(if $(shell git status --porcelain --untracked-files=no 2>/dev/null || true),"${COMMIT_NO}-dirty","${COMMIT_NO}")
 
 BINDIR := $(GOPATH)/bin
 DESTTARGET := $(abspath $(BINDIR)/$(TARGET))

tools/osbuilder/Makefile

@@ -23,9 +23,9 @@ TARGET_IMAGE          := $(IMAGES_BUILD_DEST)/kata-containers.img
 TARGET_INITRD         := $(IMAGES_BUILD_DEST)/kata-containers-initrd.img
 
 VERSION_FILE   := ./VERSION
-VERSION        := $(shell grep -v ^\# $(VERSION_FILE))
+VERSION        := $(shell grep -v ^\# $(VERSION_FILE) 2>/dev/null || echo "unknown")
-COMMIT_NO      := $(shell git rev-parse HEAD 2> /dev/null || true)
+COMMIT_NO      := $(shell git rev-parse HEAD 2>/dev/null || true)
-COMMIT         := $(if $(shell git status --porcelain --untracked-files=no),${COMMIT_NO}-dirty,${COMMIT_NO})
+COMMIT         := $(if $(shell git status --porcelain --untracked-files=no 2>/dev/null || true),${COMMIT_NO}-dirty,${COMMIT_NO})
 VERSION_COMMIT := $(if $(COMMIT),$(VERSION)-$(COMMIT),$(VERSION))
 
 ifeq ($(filter $(BUILD_METHOD),$(BUILD_METHOD_LIST)),)

tools/osbuilder/scripts/lib.sh

@@ -181,7 +181,8 @@ create_summary_file()
 	[ "$AGENT_INIT" = yes ] && agent="${init}"
 
 	local -r agentdir="${script_dir}/../../../"
-	local -r agent_version=$(cat ${agentdir}/VERSION)
+	local agent_version=$(cat ${agentdir}/VERSION 2> /dev/null)
+	[ -z "$agent_version" ] && agent_version="unknown"
 
 	cat >"$file"<<-EOF
 	---