bitbake.conf: update way to set default ROOT_HOME
Use "??=" to set default ROOT_HOME. It can be overwrote by developer with "?=" in any layer and at same time it also can be overwrote in local.conf. (From OE-Core rev: 902d3fa57d4659ee12aac80246dcaca5c45f9d8c) Signed-off-by: Kang Kai <kai.kang@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -75,7 +75,7 @@ USRBINPATH_class-native = "/usr/bin"
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USRBINPATH_class-nativesdk = "/usr/bin"
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# Root home directory
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ROOT_HOME ?= "/home/root"
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ROOT_HOME ??= "/home/root"
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##################################################################
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# Architecture-dependent build variables.
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