Acer A500 personal device repo:

Personal changes include:

=======================================================================================================================
A) Using flexrom
=======================================================================================================================
In order not to use flexrom, edit fstab.picasso, and delete line:

"/dev/block/mmcblk0p6  /system/vendor   ext4     ro                      wait"

setup-makefiles.sh is modified to generate the makefiles based on vendor/acer/a500/proprietary directory contents.
I myself have Acer widgets in flexrom (the big clock), you can also apply this patch to vendor/cm repo for flexrom support

From d1a66bbc617db0bb785b6f76ed848955291358b2 Mon Sep 17 00:00:00 2001
From: skrilaxcz <skrilax@gmail.com>
Date: Mon, 13 Aug 2012 01:51:38 +0200
Subject: [PATCH] Add flexrom support

Change-Id: I3d6b3dda904651d7ec235e058e2f86b23da4c030
---
 tools/squisher |   38 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/tools/squisher b/tools/squisher
index e816b2a..00eb5a2 100755
--- a/tools/squisher
+++ b/tools/squisher
@@ -67,6 +67,44 @@ cd $REPACK/ota
 rm -rf $REPACK/parallel
 )
 
+# Flexrom (move /system/vendor to separate partition)
+
+mv $REPACK/ota/system/vendor $REPACK/ota/flexrom
+mkdir $REPACK/ota/system/vendor
+touch $REPACK/ota/system/vendor/placeholder
+
+# update updater-script and manifest accordingly
+UPDATER_SCRIPT=$REPACK/ota/META-INF/com/google/android/updater-script
+FLEXROM_PARTITION=`cat $OUT/recovery/root/etc/recovery.fstab | grep flexrom | awk '{print $3}'`
+
+printf "Creating flexrom in $FLEXROM_PARTITION..."
+
+$SED -i 's/\/system\/vendor/\/flexrom/g' $UPDATER_SCRIPT
+
+# fix flexrom mounting and extraction
+rm -f $UPDATER_SCRIPT.b
+touch $UPDATER_SCRIPT.b
+
+while read line; do
+	
+	if [ "$line" == "package_extract_dir(\"system\", \"/system\");" ]; then
+		echo "format(\"ext4\", \"EMMC\", \"$FLEXROM_PARTITION\", \"0\", \"/flexrom\");" >> $UPDATER_SCRIPT.b;
+		echo "mount(\"ext4\", \"EMMC\", \"$FLEXROM_PARTITION\", \"/flexrom\");" >> $UPDATER_SCRIPT.b;
+		echo "$line" >> $UPDATER_SCRIPT.b;
+		echo "package_extract_dir(\"flexrom\", \"/flexrom\");" >> $UPDATER_SCRIPT.b;
+		
+	else
+		echo "$line" >> $UPDATER_SCRIPT.b;
+	fi
+	
+done < $UPDATER_SCRIPT
+
+echo "unmount(\"/flexrom\");" >> $UPDATER_SCRIPT.b;
+rm -f $UPDATER_SCRIPT
+mv $UPDATER_SCRIPT.b $UPDATER_SCRIPT
+echo
+
 # Fix build.prop
 $SED -i \
 	-e '/ro\.kernel\.android\.checkjni/d' \
-- 
1.7.7

=======================================================================================================================
B) Odex files generation
=======================================================================================================================

If you do not wish to generate odexed build (for size etc.) remove the "WITH_DEXPREOPT := true" from BoardConfig.mk

=======================================================================================================================
C) Modified init script (includes more proprietary things)
=======================================================================================================================

The ending part of init.picasso.rc requires additional proprietary files from Acer ICS build, you don't need these however.
If you do not wish to use tf_daemon / nvcpud, remove this from the script (at the very bottom)

===
#Prepare TF service
service tf_daemon /system/bin/tf_daemon -storageDir /data/tf -d
    disabled
    class main
    user root
    group shell
    oneshot

#Create data directory and start service
on property:tf.enable=y
    mkdir /data/tf
    start tf_daemon

# Enable NvCpuD, and set it to never poll config again
on boot
    setprop nvcpud.enabled true
    setprop nvcpud.refresh_ms -1

service nvcpud /system/bin/nvcpud
    class main
    user root
    group root

=======================================================================================================================
D) Changes to kernel
=======================================================================================================================

To build kernel, you'll need a patch like this:

From 2d2455013e920ad6b00be97e10e733c044f25614 Mon Sep 17 00:00:00 2001
From: skrilaxcz <skrilax@gmail.com>
Date: Sun, 12 Aug 2012 23:21:04 +0200
Subject: [PATCH] Fixed build on CM10 toolchain

---
 drivers/net/wireless/bcm4329/Makefile |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/bcm4329/Makefile b/drivers/net/wireless/bcm4329/Makefile
index 95b0ec1..a374439 100644
--- a/drivers/net/wireless/bcm4329/Makefile
+++ b/drivers/net/wireless/bcm4329/Makefile
@@ -32,14 +32,14 @@ else
 DHDCFLAGS += -DSDIO_ISR_THREAD
 endif
 
-ifeq ($(TARGET_USE_NEW_TOOLCHAIN),1)
+#ifeq ($(TARGET_USE_NEW_TOOLCHAIN),1)
   # gcc-4.6.1 warns a lot more than previous compilers.
   # The following is the minimal set of warnings that need to not error out
   # the build for it to succeed. -Wno-error would also work, but this
   # explicit list allows them to be fixed in smaller chunks.
   DHDCFLAGS += -Wno-error=unused-but-set-variable
   DHDCFLAGS += -Wno-error=array-bounds
-endif
+#endif
 
 ifeq "$(shell $(CC) --version | grep gcc | sed 's/^.* //g')" "4.6.3"
   # 4.6.3 toolchain has many false positives as above
-- 
1.7.7

(the patch is a hack). In BoardConfig.mk you may want to edit TARGET_KERNEL_CONFIG to
update defconfig of the kernel (I use ezterry's).

=======================================================================================================================
E) Build system
=======================================================================================================================

You will need to toggle TARGET_NO_RECOVERY to false, unless you wish to patch fstab generation.