local.conf.sample: use ?= to assign BB_ENV_EXTRAWHITE variables
Use ?= so that the BB_ENV_EXTRAWHITE variables can be overridden from the environment. [YOCTO #4367] Signed-off-by: Jesse Zhang <sen.zhang@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -17,12 +17,12 @@
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# These two options control how much parallelism BitBake should use. The first
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# These two options control how much parallelism BitBake should use. The first
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# option determines how many tasks bitbake should run in parallel:
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# option determines how many tasks bitbake should run in parallel:
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#
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#
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#BB_NUMBER_THREADS = "4"
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#BB_NUMBER_THREADS ?= "4"
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#
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#
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# The second option controls how many processes make should run in parallel when
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# The second option controls how many processes make should run in parallel when
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# running compile tasks:
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# running compile tasks:
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#
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#
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#PARALLEL_MAKE = "-j 4"
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#PARALLEL_MAKE ?= "-j 4"
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#
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#
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# For a quad-core machine, BB_NUMBER_THREADS = "4", PARALLEL_MAKE = "-j 4" would
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# For a quad-core machine, BB_NUMBER_THREADS = "4", PARALLEL_MAKE = "-j 4" would
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# be appropriate for example.
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# be appropriate for example.
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@ -82,7 +82,7 @@
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# Use "external-MODE" to use the precompiled external toolchains where MODE
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# Use "external-MODE" to use the precompiled external toolchains where MODE
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# is the type of external toolchain to use e.g. eabi. You need to ensure
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# is the type of external toolchain to use e.g. eabi. You need to ensure
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# the toolchain you want to use is included in an appropriate layer
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# the toolchain you want to use is included in an appropriate layer
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# TCMODE = "external-eabi"
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# TCMODE ?= "external-eabi"
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# mklibs library size optimization is more useful to smaller images,
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# mklibs library size optimization is more useful to smaller images,
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# and less useful for bigger images. Also mklibs library optimization
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# and less useful for bigger images. Also mklibs library optimization
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@ -19,10 +19,10 @@ SCONF_VERSION = "1"
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# To use git with a proxy, you must use an external git proxy command, such as
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# To use git with a proxy, you must use an external git proxy command, such as
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# the one provided by scripts/oe-git-proxy.sh. To use this script, copy it to
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# the one provided by scripts/oe-git-proxy.sh. To use this script, copy it to
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# your PATH and uncomment the following:
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# your PATH and uncomment the following:
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#GIT_PROXY_COMMAND="oe-git-proxy"
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#GIT_PROXY_COMMAND ?= "oe-git-proxy"
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#ALL_PROXY="socks://socks.example.com:1080"
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#ALL_PROXY ?= "socks://socks.example.com:1080"
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#or
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#or
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#ALL_PROXY="https://proxy.example.com:8080"
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#ALL_PROXY ?= "https://proxy.example.com:8080"
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# If you wish to use certain hosts without the proxy, specify them in NO_PROXY.
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# If you wish to use certain hosts without the proxy, specify them in NO_PROXY.
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# See the script for details on syntax.
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# See the script for details on syntax.
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