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toolchain: cmake: Off-tree toolchains gets other.h included if selected

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To ensure that an off-tree toolchain gets the toolchain/other.h header
included, such that it can include the correct header for the
toolchain via the other.h, the define __TOOLCHAIN_CUSTOM__ will be set
when ever the cmake flag TOOLCHAIN_USE_CUSTOM is set.
An off-tree toolchain needs to set the set(TOOLCHAIN_USE_CUSTOM 1) in
the off-tree generic.cmake and/or target.cmake, in order for the
include/other.h to be included. The generic.cmake and target.cmake will
be under ${TOOLCHAIN_ROOT}/cmake/toolchain/${ZEPHYR_TOOLCHAIN_VARIANT}/

As the TOOLCHAIN_USE_CUSTOM is only set for off-tree toolchains, this
has no impact on in-tree toolchains and their functionality.

Fixes zephyrproject-rtos#36117

Signed-off-by: Danny Oerndrup <daor@demant.com>
This commit is contained in:
Danny Oerndrup 2021-07-16 11:50:40 +02:00 • committed by Anas Nashif
commit 94202f3ed7
2 changed files with 12 additions and 5 deletions
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12
include/toolchain.h
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@ -33,7 +33,12 @@
#define HAS_BUILTIN(x) HAS_BUILTIN_##x
#endif
#if defined(__XCC__)
#if defined(__TOOLCHAIN_CUSTOM__)
/* This include line exists for off-tree definitions of compilers,
* and therefore this header is not meant to exist in-tree
*/
#include <toolchain/other.h>
#elif defined(__XCC__)
#include <toolchain/xcc.h>
#elif defined(__CCAC__)
#include <toolchain/mwdt.h>
@ -42,10 +47,7 @@
#elif defined(__GNUC__) || (defined(_LINKER) && defined(__GCC_LINKER_CMD__))
#include <toolchain/gcc.h>
#else
/* This include line exists for off-tree definitions of compilers,
* and therefore this header is not meant to exist in-tree
*/
#include <toolchain/other.h>
#error "Invalid/unknown toolchain configuration"
#endif
/*