TODO_1.2_NOTES

The POC is OK:
 - RPM build OK
 - install RPM OK

1) Add rpm-build to sdk:
nativesdk-packagegroup-sdk-host.bbappend

+RDEPENDS_${PN} =+ " nativesdk-rpm-build"

2) Environment:
We must use bash for sh not dash (rpm build script use sh):
Inside the docker the ssh session open a bash session, but sh is still dash.

#dash -c ". /xdt/sdk/environment-setup-corei7-64-agl-linux"
dash: 5: export: -march: bad variable name

3) prepare source:

We need at least 2 files:
- spec file
- source file (tar.gz)

For the POC add command:
. /xdt/sdk/environment-setup-corei7-64-agl-linux
At the beginning of rpm section (%prep,%build,%install)

This should be done by customize rpm macro, so transparent for user.


3) build package:
a)
#rpmbuild  -ba --macros=/xdt/sdk/sysroots/x86_64-aglsdk-linux/usr/lib/rpm/macros.rpmbuild:/xdt/sdk/sysroots/x86_64-aglsdk-linux/usr/lib/rpm/macros:/xdt/sdk/sysroots/x86_64-aglsdk-linux/usr/lib/rpm/macros.d/cmake --nodeps --target corei7_64-agl-linux --define '_build_name_fmt %%{NAME}-%%{VERSION}-%%{RELEASE}.%%{ARCH}.rpm' --define '__find_requires %{nil}' --define '__find_provides %{nil}'  --define="_prefix /usr"  agl-low-can-service.spec

b)
We need to use macro from the sysroot /xdt/sdk/sysroots/x86_64-aglsdk-linux not the host,
so for the POC, I used:

 --macros=/xdt/sdk/sysroots/x86_64-aglsdk-linux/usr/lib/rpm/macros.rpmbuild:/xdt/sdk/sysroots/x86_64-aglsdk-linux/usr/lib/rpm/macros:/xdt/sdk/sysroots/x86_64-aglsdk-linux/usr/lib/rpm/macros.d/cmake

But we should find a nice way to do that.

ps: I suppose some rpm macro customization should be done for sdk workflow build (path, default value, ...).

c)
Redefine the prefix:
 --define="_prefix /usr"

This will be a recurrent problem with the standard spec file, because the macro path (_prefix,...) is not the same for the build and for the installation. 
But nothing  insurmountable.

4) copy package:
scp agl-low-can-service-4.0-1.corei7_64.rpm qemu:/

5) Install package:
rpm -i /agl-low-can-service-4.0-1.corei7_64.rpm