update build.sh and Makefile

Makefile

@@ -918,6 +918,7 @@ clean:
 	@rm -f $(obj)include/generated/asm-offsets.h
 	@rm -f $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s
 	@rm -f $(TIMESTAMP_FILE) $(VERSION_FILE)
+	@rm -f uboot_build/*
 	@$(MAKE) -s -C doc/DocBook/ cleandocs
 	@$(MAKE) -s -C $(TOPTREE)tools/ingenic-tools/ clean
 	@find $(OBJTREE) -type f \
@@ -969,6 +970,7 @@ clobber:	tidy
 	@rm -f $(obj)u-boot-lzo.img
 	@rm -f $(obj)u-boot-lzo.bin
 	@rm -f $(obj)u-boot-lzo-with-spl.bin
+	@rm -rf uboot_build
 
 mrproper \
 distclean:	clobber unconfig

build.sh

@@ -2,6 +2,7 @@
 
 export ARCH=mips
 export CROSS_COMPILE=mipsel-linux-gnu-
+#export CCACHE=/usr/bin/ccache
 
 declare -A cfg
 
@@ -36,15 +37,36 @@ cfg[t31a]="isvp_t31a_sfcnor_ddr128M"
 cfg[t31al]="isvp_t31al_sfcnor_ddr128M"
 cfg[t31lc]="isvp_t31lc_sfcnor"
 
+OUTPUTDIR="./uboot_build"
 
-OUTPUTDIR="${HOME}/uboot"
-mkdir -p ${OUTPUTDIR} 2>&1 > /dev/null
+# Collecting platform names and formatting output
+platforms=""
+column_count=0
+for key in "${!cfg[@]}"; do
+	platforms+="${cfg[$key]}\t"
+	((++column_count))
+	if [ $column_count -eq 1 ]; then
+		platforms+="\n"
+		column_count=0
+	fi
+done
+
+echo -e "Building U-Boot 2013.07 on Ingenic XBurst1 for:\n$platforms"
 
+# Start timer
+SECONDS=0
+
+# Building process
 for soc in "${!cfg[@]}"; do
 	echo "Building U-Boot for ${soc}"
 	log=building-${soc}.log; :>$log
 	make distclean    >>$log 2>&1
+	mkdir -p ${OUTPUTDIR} 2>&1 > /dev/null
 	make ${cfg[$soc]} >>$log 2>&1
-	make -j`nproc`    >>$log 2>&1
+	make -j$(nproc)   >>$log 2>&1
 	cp u-boot-lzo-with-spl.bin ${OUTPUTDIR}/u-boot-${soc}-gtxaspec.bin
 done
+
+# End timer and report
+duration=$SECONDS
+echo "Total build time: $(($duration / 60)) minutes and $(($duration % 60)) seconds."