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toolchain-external-custom: Describe BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX 

"Toolchain prefix" option apparently doesn't have any help describing
it, which causes confusion when using external toolchain. Leaving this
option at default prefix name ("$(ARCH)-linux") when external toolchain
components are called with different prefix (e.g.
"$(ARCH)-unknown-linux-gnu") may cause build failure unless the prefix
symlink is already in place (e.g. when using Buildroot-generated
toolchain as external toolchain).

Describe the option to clarify.

Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit e418a2c06a)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2023.02.x
Bagas Sanjaya 2023-05-24 10:16:01 +07:00 committed by Peter Korsgaard
parent 0a92e97196
commit 971cabfd91
1 changed files with 15 additions and 0 deletions
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15
toolchain/toolchain-external/toolchain-external-custom/Config.in.options
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@ -24,6 +24,21 @@ config BR2_TOOLCHAIN_EXTERNAL_REL_BIN_PATH
config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX
string "Toolchain prefix"
default "$(ARCH)-linux"
help
Component name prefix used by your external toolchain.
Typically, this is the target tuple, e.g. something that
looks like: $(ARCH)-unknown-linux-gnu.
If unsure, look at the "bin" directory of your toolchain and
note the part of component name before the last dash, i.e. if
you call the toolchain's gcc as $(ARCH)-unknown-linux-gnu-gcc,
the prefix is $(ARCH)-unknown-linux-gnu.
Note that Buildroot toolchains have shorter aliases that look
like $(ARCH)-linux, as symlinks to the full-tuple components,
so you can leave this option at default value if you use them
as external toolchain.
choice
bool "External toolchain gcc version"