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manual: Clarify wrapper and debug

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Try to clarify how the wrapper passes arguments and why.
This is mainly because the output you can see when you build, does not
reflect what is invoked by the wrapper.

Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Maxime Hadjinlian 2014-02-03 01:47:55 +01:00 committed by Peter Korsgaard
parent 42c56751fc
commit 3bcb7e74be
1 changed files with 4 additions and 3 deletions
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7
docs/manual/customize-toolchain.txt
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@ -17,9 +17,10 @@ generate it.
It also requires to set the Buildroot settings according to the toolchain ones
(see xref:external-toolchain-backend[]).
When using an external toolchain, Buildroot generates a wrapper program, that
passes the appropriate options (according to the configuration) to the
external toolchain programs. In case you need to debug this wrapper, you can
When using an external toolchain, Buildroot generates a wrapper program,
that transparently passes the appropriate options (according to the
configuration) to the external toolchain programs. In case you need to
debug this wrapper to check exactly what arguments are passed, you can
set the environment variable BR_DEBUG_WRAPPER to either one of:
* +0+, empty or not set: no debug