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cmake: Toolchain abstraction: Introducing macro toolchain_cc_nocommon

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The macro is intended to abstract the -fno-common compiler option
which controls the placement of uninitialized global variables. The
macro leaves it up to the toolchain to define the option.

The intent here is to abstract Zephyr's dependence on toolchains,
thus allowing for easier porting to other, perhaps commercial,
toolchains and/or usecases.

No functional change expected.

Signed-off-by: Danny Oerndrup <daor@demant.com>
This commit is contained in:
Danny Oerndrup 2019-06-12 14:56:46 +02:00 • committed by Alberto Escolar
commit e34ed7c8e2
6 changed files with 21 additions and 1 deletions
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cmake/compiler/clang/target.cmake
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@ -81,6 +81,7 @@ include(${ZEPHYR_BASE}/cmake/compiler/gcc/target_asm.cmake)
include(${ZEPHYR_BASE}/cmake/compiler/gcc/target_baremetal.cmake)
include(${ZEPHYR_BASE}/cmake/compiler/${COMPILER}/target_warnings.cmake)
include(${ZEPHYR_BASE}/cmake/compiler/gcc/target_imacros.cmake)
include(${ZEPHYR_BASE}/cmake/compiler/gcc/target_base.cmake)
macro(toolchain_cc_security_fortify)
# No op, clang doesn't understand fortify at all