Note mutli-arch support excludes cross-build (#748)

* Note mutli-arch support excludes cross-build We are currently limited to building an application image for a platform on that platform Signed-off-by: Aidan Delaney <[email protected]> Signed-off-by: Aidan Delaney <[email protected]> * Bump pack tools dependency Bump to the latest `pack` in our tools Signed-off-by: Aidan Delaney <[email protected]> Signed-off-by: Aidan Delaney <[email protected]> --------- Signed-off-by: Aidan Delaney <[email protected]> Signed-off-by: Aidan Delaney <[email protected]>
buildpacks · Aug 7, 2024 · 8983bfb · 8983bfb
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diff --git a/content/docs/for-app-developers/how-to/special-cases/build-for-arm.md b/content/docs/for-app-developers/how-to/special-cases/build-for-arm.md
@@ -12,6 +12,8 @@ weight=1
 Building for the ARM architecture is now easier than ever! The `heroku/builder:24` builder supports both AMD64 and ARM64 architectures, and includes
 multi-arch Go, Java, Node.js, PHP, Python, Ruby and Scala buildpacks. You can read more about Heroku's [Cloud Native Buildpacks here][heroku-buildpacks].
 
+> **NOTE:** Our current multi-architecture support allows building an ARM64 application image on an ARM64 host, and building an AMD64 application image on an AMD64 host. We do not currently support building an application image for one architecture on a different architecture. However, if your host machine supports emulation (e.g., with QEMU) you may be able to perform cross platform builds, albeit with a performance penalty.
+
 ### 1. Clone the [samples][samples] repository
 
 ```

diff --git a/tools/go.mod b/tools/go.mod
@@ -5,7 +5,7 @@ go 1.22
 toolchain go1.22.2
 
 require (
-	github.com/buildpacks/pack v0.33.2
+	github.com/buildpacks/pack v0.34.2
 	github.com/gohugoio/hugo v0.126.1
 	github.com/spf13/cobra v1.8.0
 )
@@ -82,7 +82,7 @@ require (
 	github.com/bep/overlayfs v0.9.2 // indirect
 	github.com/bep/simplecobra v0.4.0 // indirect
 	github.com/bep/tmc v0.5.1 // indirect
-	github.com/buildpacks/imgutil v0.0.0-20240514200737-4af87862ff7e // indirect
+	github.com/buildpacks/imgutil v0.0.0-20240605145725-186f89b2d168 // indirect
 	github.com/buildpacks/lifecycle v0.19.6 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/chrismellard/docker-credential-acr-env v0.0.0-20230304212654-82a0ddb27589 // indirect

diff --git a/tools/go.sum b/tools/go.sum
@@ -218,10 +218,14 @@ github.com/bep/workers v1.0.0 h1:U+H8YmEaBCEaFZBst7GcRVEoqeRC9dzH2dWOwGmOchg=
 github.com/bep/workers v1.0.0/go.mod h1:7kIESOB86HfR2379pwoMWNy8B50D7r99fRLUyPSNyCs=
 github.com/buildpacks/imgutil v0.0.0-20240514200737-4af87862ff7e h1:IBH3oJu2okeB8W+bMTCYsRqbDT1+cjt6GuFtE52tAxM=
 github.com/buildpacks/imgutil v0.0.0-20240514200737-4af87862ff7e/go.mod h1:n2R6VRuWsAX3cyHCp/u0Z4WJcixny0gYg075J39owrk=
+github.com/buildpacks/imgutil v0.0.0-20240605145725-186f89b2d168 h1:yVYVi1V7x1bXklOx9lpbTfteyzQKGZC/wkl+IlaVRlU=
+github.com/buildpacks/imgutil v0.0.0-20240605145725-186f89b2d168/go.mod h1:n2R6VRuWsAX3cyHCp/u0Z4WJcixny0gYg075J39owrk=
 github.com/buildpacks/lifecycle v0.19.6 h1:/bmfMs35aSkxyzYDF+iHl9VnYmUBBbHBmnvo8XNEINk=
 github.com/buildpacks/lifecycle v0.19.6/go.mod h1:sWrBJzf/7dWrcHrWiV/P2+3jS8G8Ki5tczq8jO3XVRQ=
 github.com/buildpacks/pack v0.33.2 h1:AZ8sd0VwcISQWlBN+VBc+GSZ12WRskknB91ei3LGnP0=
 github.com/buildpacks/pack v0.33.2/go.mod h1:1lKkNvhBowhCW5RWodh73V0HjcJsJuUv9+1CUt/IliM=
+github.com/buildpacks/pack v0.34.2 h1:6+BvuYeS07QUJZAkb/L9v2TI7mtLA2zzbfewfB4bRT8=
+github.com/buildpacks/pack v0.34.2/go.mod h1:g1o7cohzXn2X+uYdWKdFgity1l2QvUDSGIMVhzBbA1M=
 github.com/bwesterb/go-ristretto v1.2.3/go.mod h1:fUIoIZaG73pV5biE2Blr2xEzDoMj7NFEuV9ekS419A0=
 github.com/cenkalti/backoff/v4 v4.2.1 h1:y4OZtCnogmCPw98Zjyt5a6+QwPLGkiQsYW5oUqylYbM=
 github.com/cenkalti/backoff/v4 v4.2.1/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
@@ -604,6 +608,7 @@ github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+W
 github.com/onsi/gomega v1.5.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/onsi/gomega v1.31.1 h1:KYppCUK+bUgAZwHOu7EXVBKyQA6ILvOESHkn/tgoqvo=
 github.com/onsi/gomega v1.31.1/go.mod h1:y40C95dwAD1Nz36SsEnxvfFe8FFfNxzI5eJ0EYGyAy0=
+github.com/onsi/gomega v1.33.1 h1:dsYjIxxSR755MDmKVsaFQTE22ChNBcuuTWgkUDSubOk=
 github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
 github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3IKzErnv2BNG4W4MAM=
 github.com/opencontainers/image-spec v1.1.0 h1:8SG7/vwALn54lVB/0yZ/MMwhFrPYtpEHQb2IpWsCzug=