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cmake: libc: minimal: Avoid linking against other libc implementations

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The minimal libc is currently built as a zephyr_library and will be
included in the final link line as such. However, the c_library property
will still be set as "-lc" (for most linkers) and will be added to the
link line. This effectively requires that a separate libc implementation
be available in the toolchain and makes it possible to accidentally pull
from the non-minimal libc.

This doesn't seem desirable, so try to prevent this by clearing the
c_library property if we are using the minimal libc.

Signed-off-by: Jonathon Penix <jpenix@quicinc.com>
This commit is contained in:
Jonathon Penix 2024-10-09 14:55:02 -07:00 • committed by Mahesh Mahadevan
commit e020f31fdb
1 changed files with 4 additions and 0 deletions
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4
lib/libc/minimal/CMakeLists.txt
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@ -1,5 +1,9 @@
# SPDX-License-Identifier: Apache-2.0
# As minimal libc will be built as a zephyr_library, clear c_library to
# prevent accidentally requiring or linking against another libc implementation.
set_property(TARGET linker PROPERTY c_library "")
zephyr_system_include_directories(include)
zephyr_library()