RFR: 8265469: Allow to build media and webkit for Linux-AArch64

[Kevin Rushforth]

On Mon, 19 Apr 2021 19:57:50 GMT, Johan Vos <jvos at openjdk.org> wrote:

> Changes that allow to build linux configuration on Linux AArch64
> This PR introduces an `IS_AARCH64` parameter in build.gradle.
> This PR already contains the change from PR #465 so if this one gets integrated, that change needs to removed from this PR.

Does passing `ARCH=aarch64` to the media Makefiles work on Mac and Windows platforms?

build.gradle line 2865:

> 2863:                          "OUTPUT_DIR=${nativeOutputDir}", "BUILD_TYPE=${buildType}", "BASE_NAME=jfxmedia",
> 2864:                          "COMPILE_PARFAIT=${compileParfait}",
> 2865:                          IS_64 ? IS_AARCH64 ? "ARCH=aarch64" : "ARCH=x64" : "ARCH=x32",

Does `ARCH=aarch64` get handled correctly on Mac and Windows?

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PR: https://git.openjdk.java.net/jfx/pull/467