I have downloaded the Android source to my Mac. When I went to build, I got this message:
$make -j4
Checking build tools versions…
build/core/main.mk:90: ************************************************************
build/core/main.mk:91: You are building on a case-insensitive filesystem.
build/core/main.mk:92: Please move your source tree to a case-sensitive filesystem.
build/core/main.mk:93: ************************************************************
build/core/main.mk:94: *** Case-insensitive filesystems not supported. Stop.
Then I realised I had missed creating a case-sensitive image. So I created a new one as mentioned on http://source.android.com/source/initializing.html, like this:
hdiutil create -type SPARSE -fs ‘Case-sensitive Journaled HFS+’ -size 40g ~/android.dmg
…but I can not create any folder in it, it says:
mkdir android
mkdir: android: Read-only file system
How can I move Android source code which was downloaded on my Mac OS to a newly created case-sensitive image?
I met the same problem. I found if you use sudo then the problem is gone.
Note the # character in Google’s step by step guide:
# hdiutil create -type SPARSE -fs 'Case-sensitive Journaled HFS+' -size 40g ~/android.dmg
function mountAndroid { hdiutil attach ~/android.dmg -mountpoint /Volumes/android; }
So you have to run the commands with sudo:
sudo hdiutil create -type SPARSE -fs 'Case-sensitive Journaled HFS+' -size 40g ~/android.dmg
sudo hdiutil attach ~/android.dmg -mountpoint /Volumes/android
Answer：
With the given command:
hdiutil create -type SPARSE -fs 'Case-sensitive Journaled HFS+' -size 40g ~/android.dmg
We’ll get a read-only sparse disk image file. Thus we need to convert it to writable before mounting it:
hdiutil convert ~/android.dmg.sparsefile -format UDRW -o ~/android.dmg
Besides, instead create & convert images, we can generate writable disk image directly with OSX build-in Disk Utility.
Answer：
As of macOS High Seirra, there’s a faster alternative called “APFS Subvolumes”. It’s significantly faster than sparse images, and also features some fancy copy-on-write features like BTRFS.
- Open Applications → Utilities → Disk Utility
- Click the View button and change to “Show All Devices”
- Select the desired container disk and click the add button at the top of screen
- Select the new partition and name it e.g. “android”
- Choose “APFS (Case-sensitive)” from the Format menu
- Optionally click “Size Options” to set quota for the subvolume
- Click “Add” to create the volume
You should now have an extremely fast, case-sensitive partition that grows dynamically like a sparse image.
Answer：
This was changed in Mojave.
This command will create the image getting ready to build.
hdiutil create -type SPARSE -fs 'Case-sensitive Journaled HFS+' -size 100g ~/android.dmg
This command will convert it. Change “administrator” with your username.
hdiutil convert /Users/administrator/android.dmg.sparseimage -format UDRW -o /Users/administrator/android.dmg
Tags: androidandroid, image
