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util/crossgcc: Document how to build the toolchain for another location 

One common issue with the toolchain is that it takes a very long time
to build while it's somewhat volatile inside the coreboot tree.

Installing the toolchain elsewhere helps keep it safe but since there
is no reliable default location outside the tree, keep the default
as is.

Change-Id: Ic414cddfd3c7097412f3f2c3c7ec7b7191fa32de
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/29826
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
This commit is contained in:
Patrick Georgi 2018-11-24 23:14:45 +01:00
parent 016cc4296e
commit d971e7670c
1 changed files with 1 additions and 0 deletions
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util/crossgcc/Makefile.inc
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@ -28,6 +28,7 @@ help_toolchain help::
@echo ' crosstools-ARCH - Build cross-compiler with GDB for specific architecture' @echo ' crosstools-ARCH - Build cross-compiler with GDB for specific architecture'
@echo ' ARCH can be "$(subst $(spc),"$(comma) ",$(TOOLCHAIN_ARCHES))"' @echo ' ARCH can be "$(subst $(spc),"$(comma) ",$(TOOLCHAIN_ARCHES))"'
@echo ' Use "make [target] CPUS=#" to build toolchain using multiple cores' @echo ' Use "make [target] CPUS=#" to build toolchain using multiple cores'
@echo ' Use "make [target] DEST=some/path" to install toolchain there'
@echo @echo
# For the toolchain builds, use CPUS=x to use multiple processors to build # For the toolchain builds, use CPUS=x to use multiple processors to build