Build Problem: gmscompat_lib.pk8 not found

linux-colonel

I am building GrapheneOS myself and my latest build (it used to work) failed with:

Can't open "gmscompat_lib.pk8" for reading, No such file or directory
40A70934A07F0000:error:80000002:system library:BIO_new_file:No such file or directory:../crypto/bio/bss_file.c:67:calling fopen(gmscompat_lib.pk8, rb)
40A70934A07F0000:error:10000080:BIO routines:BIO_new_file:no such file:../crypto/bio/bss_file.c:75:

This happens when calling script/generate-release.sh. Do I need to generate gmscompat_lib.pk8 or is something else wrong with my setup. I looked through the recent changes here and did not see anything that would have changed this behavior.

linux-colonel

I think this commit is where it was changed. Looks like I need to generate a new key, but it would be good to get confirmation before I build and flash this. Do the instructions need to be updated?

linux-colonel

I generated the missing key and was able to build and install the OTA. I haven't tested sandboxed Google Play services because I don't use them.

dot_______166

all I did was duplicate the Bluetooth key and rename it to get around this error, you can just do that or generate the key as you did (I wrote this to help anyone else as you solved it) and gmscompat works for me

raxod502

It appears that the build instructions were updated to fix this oversight in https://github.com/GrapheneOS/grapheneos.org/commit/2ea800735819e2446f56dbdbe0838f47bf76a0ec on 2025-11-08.

I personally have been checking https://github.com/GrapheneOS/grapheneos.org/commits/main/static/build.html each time I build a new version of GrapheneOS, since it seems that the build instructions change frequently and builds tend to fail with terse error messages if all the instructions aren't followed exactly.