Add build magic so that dependencies are linked using git hashes

2 files changed, 187 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index 7259062496..de4ec321ca 100644
--- a/Makefile
+++ b/Makefile
@@ -74,3 +74,12 @@ app-dir:
 
 package-monomac:
 	(cd main; make package-monomac)
+
+reset-versions: reset-all
+check-versions: check-all
+
+reset-%:
+	@./version-checks --reset $*
+
+check-%:
+	@./version-checks --check $*
diff --git a/version-checks b/version-checks
new file mode 100755
index 0000000000..6bc1200a9c
--- /dev/null
+++ b/version-checks
@@ -0,0 +1,178 @@
+#!/bin/bash -e
+
+cd `dirname $0`
+top_srcdir=`pwd`
+script_name=./`basename $0`
+
+#
+# Script to check versions of dependencies
+# To check the version for all dependencies, just run the script with no arguments.
+# To check the version for a specific dependency, run the script with "check <dependency>"
+# To reset a dependency to the needed version, run the script with "reset <dependency>"
+# It is also possible to pass "reset all" to reset all dependencies
+#
+
+# md-addins
+DEP[0]=md-addins
+DEP_NAME[0]=MDADDINS
+DEP_PATH[0]=${top_srcdir}/../md-addins
+DEP_MODULE[0]=git@github.com:xamarin/md-addins.git
+DEP_NEEDED_VERSION[0]=7b15f212e3a3243f15b7547d18f07fc8535ecbb6
+DEP_BRANCH_AND_REMOTE[0]="master origin/master"
+
+# heap-shot
+DEP[1]=heap-shot
+DEP_NAME[1]=HEAPSHOT
+DEP_PATH[1]=${top_srcdir}/../heap-shot
+DEP_MODULE[1]=git@github.com:mono/heap-shot.git
+DEP_NEEDED_VERSION[1]=498dba772c1e514e5a0d12d4b90e202acc30d1d2
+DEP_BRANCH_AND_REMOTE[1]="master origin/master"
+
+# other dependencies
+# DEP[2]=...
+# ...
+
+function fetch_variables
+{
+	IGNORE_VERSION=`eval echo \\\$IGNORE_${DEP_NAME[$1]}_VERSION`
+	THE_PATH=${DEP_PATH[$1]}
+	NAME=${DEP[$1]}
+	NEEDED_VERSION=${DEP_NEEDED_VERSION[$1]}
+	if test -d "$THE_PATH"; then
+		cd "$THE_PATH"
+		VERSION=`git log | head -1 | awk '{print $2}' 2>/dev/null`
+		BRANCH=`git status | head -1 | awk '{print $4}' 2>/dev/null`
+		cd "$top_srcdir"
+	else
+		VERSION=
+		BRANCH=
+	fi
+	BRANCH_AND_REMOTE=${DEP_BRANCH_AND_REMOTE[$1]}
+	NEEDED_BRANCH=`echo "$BRANCH_AND_REMOTE" | sed -e 's, .*,,'`
+	MODULE=${DEP_MODULE[$1]}
+}
+
+function reset_version
+{
+	fetch_variables $1
+
+	if test -d "$THE_PATH"; then
+		cd "$THE_PATH"
+		if ! git show "$NEEDED_VERSION" >/dev/null 2>&1; then
+			echo "*** [$NAME] git fetch $NAME"
+			git fetch
+		fi
+	else
+		echo "*** [$NAME] git clone $MODULE"
+		cd "`dirname $THE_PATH`"
+		git clone $MODULE
+	fi
+
+	cd "$THE_PATH"
+	echo "*** [$NAME] git checkout $NEEDED_BRANCH"
+	git checkout $NEEDED_BRANCH || git checkout -b $BRANCH_AND_REMOTE
+	echo "*** [$NAME] git reset --hard $NEEDED_VERSION"
+	git reset --hard $NEEDED_VERSION
+	
+	cd "$top_srcdir"
+}
+
+function check_version
+{
+	fetch_variables $1
+
+	if [[ "x$IGNORE_VERSION" == "x" ]]; then
+		if test ! -d "$THE_PATH"; then
+			echo "Your $NAME checkout is missing, please run '$script_name --reset $NAME'"
+			FAILURE=1
+		else
+			if [[ "x$VERSION" != "x$NEEDED_VERSION" || "x$BRANCH" != "x$NEEDED_BRANCH" ]]; then
+				echo "Your $NAME version is out of date, please run '$script_name --reset $NAME'"
+				FAILURE=1
+			fi
+		fi
+	fi
+}
+
+function reset_all
+{
+	I=0
+	while [[ "x${#DEP[@]}" != "x$I" ]]; do
+		reset_version $I
+		let I=$I+1
+	done
+}
+
+function check_all
+{
+	I=0
+	while [[ "x${#DEP[@]}" != "x$I" ]]; do
+		check_version $I
+		let I=$I+1
+	done
+}
+
+function find_dep
+{
+	I=0
+	DEP_IDX=
+	while [[ "x${#DEP[@]}" != "x$I" ]]; do
+		if [[ "x${DEP[$I]}" == "x" ]]; then
+			echo "There is no dependency named $1"
+			exit 1
+		elif [[ "x${DEP[$I]}" == "x$1" ]]; then
+			DEP_IDX=$I
+			break;
+		fi
+		let I=$I+1
+	done
+	if [[ "x$DEP_IDX" == "x" ]]; then
+		echo "There is no dependency named $1"
+		exit 1
+	fi
+}
+
+FAILURE=0
+
+if [[ "x$1" == "x" ]]; then
+	check_all
+elif [[ "x$1" == "x--check-all" ]]; then
+	check_all
+elif [[ "x$1" == "x--check" && "x$2" == "xall" ]]; then
+	check_all
+elif [[ "x$1" == "x--check" && "x$2" == "x" ]]; then
+	check_all
+elif [[ "x$1" == "x--check" ]]; then
+	shift
+	while [[ "x$1" != "x" ]]; do 
+		find_dep $1
+		check_version $DEP_IDX
+		shift
+	done
+elif [[ "x$1" == "x--reset-all" ]]; then
+	reset_all
+elif [[ "x$1" == "x--reset" && "x$2" == "xall" ]]; then
+	reset_all
+elif [[ "x$1" == "x--reset" && "x$2" == "x" ]]; then
+	reset_all
+elif [[ "x$1" == "x--reset" ]]; then
+	shift
+	while [[ "x$1" != "x" ]]; do 
+		find_dep $1
+		reset_version $DEP_IDX
+		shift
+	done
+else
+	echo Unknown arguments: $@
+	echo 'Expected --reset|--check <list of dependencies>'
+	exit 1
+fi
+
+if [[ "x$FAILURE" == "x1" ]]; then
+	echo "One or more modules needs update"
+	exit 1
+else
+	echo "All dependent modules up to date"
+fi
+
+