Add --build-archive to spidermonkey build.sh

This option allows to build the spidermonky archive hosted by WFG from
the upstream firefox tarball.

First this serves as documentation as to how the taball is created and
by integrating it into the regular build process allows to easely bump
spidermonky version for local testing.

Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>

libraries/source/spidermonkey/build.sh

@@ -6,20 +6,38 @@ set -e
 cd "$(dirname "$0")"
 
 # This should match the version in config/milestone.txt
-FOLDER="mozjs-115.16.1"
+PV=115.16.1
+FOLDER="mozjs-${PV}"
 # If same-version changes are needed, increment this.
-LIB_VERSION="115.16.1+5"
+LIB_VERSION="${PV}+wfg6"
 LIB_NAME="mozjs115"
 
+build_archive()
+{
+	if [ ! -e "firefox-${PV}esr.source.tar.xz" ]; then
+		curl -fLo "firefox-${PV}esr.source.tar.xz" \
+			"https://archive.mozilla.org/pub/firefox/releases/${PV}esr/source/firefox-${PV}esr.source.tar.xz"
+	fi
+
+	rm -Rf firefox-${PV}
+	rm -Rf mozjs-${PV}.tar.xz
+	${TAR} -xJf firefox-${PV}esr.source.tar.xz
+
+	DIST="$(realpath .)" STAGING="$(realpath .)/firefox-${PV}/mozjs-src-pkg" firefox-${PV}/js/src/make-source-package.py build
+}
+
 fetch()
 {
 	curl -fLo "${FOLDER}.tar.xz" \
 		"https://releases.wildfiregames.com/libs/${FOLDER}.tar.xz"
 }
 
-echo "Building SpiderMonkey..."
 while [ "$#" -gt 0 ]; do
 	case "$1" in
+		--build-archive)
+			build_archive
+			exit
+			;;
 		--fetch-only)
 			fetch
 			exit
@@ -33,6 +51,8 @@ while [ "$#" -gt 0 ]; do
 	shift
 done
 
+echo "Building SpiderMonkey..."
+
 if [ -e .already-built ] && [ "$(cat .already-built || true)" = "${LIB_VERSION}" ]; then
 	echo "Skipping - already built (use --force-rebuild to override)"
 	exit
@@ -44,7 +64,7 @@ OS="${OS:=$(uname -s)}"
 # This tarball is built from https://ftp.mozilla.org/pub/firefox/releases/115.16.1esr/source/
 # by running js/src/make-source-package.py
 if [ ! -e "${FOLDER}.tar.xz" ]; then
-	fetch
+	fetch || build_archive
 fi
 
 # unpack