make build-script use libfaketime again

Instead of using the upstream's wrapper script use the direct mechanism
which does not alter return values. This closes #30

In order to make this work I removed the "eval" calls as they were only
introducing other environment variable which can be accomplished via
other (simpler?) means as well.

build.sh

@@ -19,6 +19,9 @@
 # SITE_REPO_FETCH_METHOD = http, everything except "git" will use the HTTP method for fetchting site repo
 # TARGETS     = a space separated list of target platforms (if unset, all platforms will be build)
 # VERBOSE     = 0 (default) or 1, call the make commands with 'V=s' to see actual errors better
+#
+# expert/special usecase only (optional):
+# FAKETIME_LIB = path to libfaketime.so.1 if it is not in the standard location
 
 
 ### includes
@@ -168,14 +171,19 @@ echo "SITE=${SITE_COMMIT} # ${VERSION}" >> ${build_info_path}
 echo "TARGETS=${TARGETS}" >> ${build_info_path}
 echo "TS=${BUILD_TS}" >> ${build_info_path}
 
+### SETUP FAKETIME (consistent build)
+[ -z "$FAKETIME_LIB" ] && FAKETIME_LIB="/usr/lib/${MACHTYPE}-${OSTYPE}/faketime/libfaketime.so.1"
+export LD_PRELOAD="${FAKETIME_LIB}"
+export FAKETIME="${BUILD_TS}"
+
 ### BUILD FIRMWARE
 progress "Building the firmware - please stand by!"
 
 for target in ${TARGETS} ; do
 	# configure build environment for our current target
 	export GLUON_TARGET="${target}"
-	gluon_build_env_vars="GLUON_TARGET=\"${target}\" GLUON_RELEASE=\"${VERSION}\" BROKEN=\"${BROKEN}\""
-	[ "${AUTOUPDATER}" != "off" ] && gluon_build_env_vars="${gluon_build_env_vars} GLUON_BRANCH=\"${AUTOUPDATER}\""
+	export GLUON_RELEASE="${VERSION}"
+	[ "${AUTOUPDATER}" != "off" ] && export GLUON_BRANCH="${AUTOUPDATER}"
 
 	# prepare build environment for our current target
 	progress "Preparing build environment for target ${target}."
@@ -190,7 +198,7 @@ for target in ${TARGETS} ; do
 
 	# now we can start building the images for the target platform
 	progress "Building FFHO-flavoured Gluon firmware for target ${target}. You'd better go and fetch some c0ffee!"
-	eval "${gluon_build_env_vars} make -j ${MAKEJOBS} prepare ${MAKE_PARAM}"
+	make -j ${MAKEJOBS} prepare ${MAKE_PARAM}
 	[ "$?" -eq "0" ] || abort "Failed to build firmware for target-platform ${target}."
 
 	# finally compile the firmware binaries
@@ -200,7 +208,7 @@ for target in ${TARGETS} ; do
 
 	# compile the modules
 	progress "Compiling modules."
-	eval "${gluon_build_env_vars} make -j ${MAKEJOBS} modules ${MAKE_PARAM}"
+	make -j ${MAKEJOBS} modules ${MAKE_PARAM}
 	[ "$?" -eq "0" ] || abort "Failed to build modules for target-platform ${target}."
 done