While at it, also remove unnecessary "#!/usr/bin/env python3" in files
that only get imported, and adjust other empty/comment lines in the
beginnings of the files for consistency.
This makes files easier to read, and makes the pmbootstrap codebase more
consistent with the build.postmarketos.org codebase.
Currently, building with envkernel.sh entirely ignores the
makedepends listed in the kernel APKBUILD. Common dependencies
needed by most kernels are hardcoded in envkernel.sh.
However, some kernels may need extra dependencies either during
the build process or when the kernel is packaged.
Installing the makedepends when the build environment is initialized
is difficult because "source helpers/envkernel.sh" is not aware
of the exact kernel package that is going to be built later.
However, we can easily modify the packaging step
(i.e. pmbootstrap build --envkernel linux-...)
to install the required makedepends.
This fixes building "linux-postmarketos-qcom-msm8916" using envkernel,
since it requires "dtbTool" and "installkernel" to be installed when
the APKBUILD package() function is executed.
abuild depends on the gcc binary in order to define a default CBUILD value.
When using an alternative gcc version (e.g. envkernel.sh with gcc6), the
gcc binary is not installed by the envkernel.sh script.
This change sets the CBUILD env variable so that abuild doesn't need to
depend on the gcc package.
Provides a quick way to incrementally compile a kernel and push it to
device.
Example usage.
Compile the kernel:
$ cd /src/linux/
$ source /src/pmbootstrap/helpers/envkernel.sh
$ make tegra_postmarketos_defconfig
$ make -jX
Package kernel and flash to device:
$ pmbootstrap build --envkernel linux-samsung-p4wifi
$ pmbootstrap flasher flash_kernel
Modify kernel source then incremental compile, package, and flash:
$ make -jX
$ pmbootstrap build --envkernel linux-samsung-p4wifi
$ pmbootstrap flasher flash_kernel
