Autobuild: Add explanations for apt cross-compilation setup

hoffie · hoffie · commit 4b4770b024db · 2022-10-05T11:20:13.000+02:00
Related: https://github.com/jamulussoftware/jamulus/pull/2895/files#r987309259
diff --git a/.github/autobuild/linux_deb.sh b/.github/autobuild/linux_deb.sh
@@ -40,7 +40,9 @@ setup_cross_compilation_apt_sources() {
         return
     fi
     sudo dpkg --add-architecture "${TARGET_ARCH}"
+    # Duplicate the original Ubuntu sources and modify them to refer to the TARGET_ARCH:
     sed -rne "s|^deb.*/ ([^ -]+(-updates)?) main.*|deb [arch=${TARGET_ARCH}] http://ports.ubuntu.com/ubuntu-ports \1 main universe multiverse restricted|p" /etc/apt/sources.list | sudo dd of=/etc/apt/sources.list.d/"${TARGET_ARCH}".list
+    # Now take the original Ubuntu sources and limit those to the build host (i.e. non-TARGET_ARCH) architectures:
     sudo sed -re 's/^deb /deb [arch=amd64,i386] /' -i /etc/apt/sources.list
 }
 

Original file line number	Diff line number	Diff line change
`@@ -40,7 +40,9 @@ setup_cross_compilation_apt_sources() {`
`40`	`40`	`return`
`41`	`41`	`fi`
`42`	`42`	`sudo dpkg --add-architecture "${TARGET_ARCH}"`
	`43`	`+ # Duplicate the original Ubuntu sources and modify them to refer to the TARGET_ARCH:`
`43`	`44`	`sed -rne "s\|^deb./ ([^ -]+(-updates)?) main.\|deb [arch=${TARGET_ARCH}] http://ports.ubuntu.com/ubuntu-ports \1 main universe multiverse restricted\|p" /etc/apt/sources.list \| sudo dd of=/etc/apt/sources.list.d/"${TARGET_ARCH}".list`
	`45`	`+ # Now take the original Ubuntu sources and limit those to the build host (i.e. non-TARGET_ARCH) architectures:`
`44`	`46`	`sudo sed -re 's/^deb /deb [arch=amd64,i386] /' -i /etc/apt/sources.list`
`45`	`47`	`}`
`46`	`48`