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pmb.config: mount go caching directories

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Always set GOCACHE during build and let it point to pmbootstrap's work
dir. This has a similar effect as using ccache for C/C++.

Set GOMODCACHE conditionally: this is for caching the go modules (git
repositories) that get cloned during a build if they are not bundled
with the source. Usually APKBUILDs should cache them, but when using
pmbootstrap build --src, they would get downloaded over and over again.
Set GOMODCACHE automatically for --src and allow enabling/disabling this
manually with new --go-mod-cache / --no-go-mod-cache.

This speeds up multiple iterations of building the same package
significantly. I'm using it for:

$ pmbootstrap build postmarketos-mkinitfs --src=...

I've verified that using the same GOCACHE dir for multiple architectures
doesn't result in build artifacts for the wrong arch getting used.

Reviewed-by: Clayton Craft <clayton@craftyguy.net>
Link: https://lists.sr.ht/~postmarketos/pmbootstrap-devel/%3C20230223064743.1773-1-ollieparanoid@postmarketos.org%3E
This commit is contained in:
Oliver Smith 2023-02-23 07:47:43 +01:00
parent 3ad159f98d
commit a0cea6255a
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4 changed files with 41 additions and 1 deletions
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12
pmb/build/_package.py
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@ -436,6 +436,18 @@ def run_abuild(args, apkbuild, arch, strict=False, force=False, cross=None,
if not args.ccache:
env["CCACHE_DISABLE"] = "1"
# Cache binary objects from go in this path (like ccache)
env["GOCACHE"] = "/home/pmos/.cache/go-build"
# Cache go modules (git repositories). Usually these should be bundled and
# it should not be required to download them at build time, in that case
# the APKBUILD sets the GOPATH (and therefore indirectly GOMODCACHE). But
# e.g. when using --src they are not bundled, in that case it makes sense
# to point GOMODCACHE at pmbootstrap's work dir so the modules are only
# downloaded once.
if args.go_mod_cache:
env["GOMODCACHE"] = "/home/pmos/go/pkg/mod"
# Build the abuild command
cmd = ["abuild", "-D", "postmarketOS"]
if strict or "pmb:strict" in apkbuild["options"]: