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cmake/compiler: Add linker_script compiler property

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This property specifies the flag used to pass the linker script filename
through the compiler front end tot he linker.

For clang, we use the general purpose linker-pass through -Wl flag with -T:
-Wl,-T as clang doesn't support -T.

For gcc, we use -T directly as this keeps the picolibc specs file from
inserting the picolibc linker script as well.

If the compiler doesn't specify a value, we continue to use -Wl,-T as
before.

Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Keith Packard 2023-07-05 10:13:08 -07:00 • committed by Carles Cufí
commit 424590f7d8
4 changed files with 12 additions and 2 deletions
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3
cmake/compiler/gcc/compiler_flags.cmake
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@ -182,6 +182,9 @@ set_compiler_property(PROPERTY debug -g)
# Flags to save temporary object files
set_compiler_property(PROPERTY save_temps -save-temps=obj)
# Flag to specify linker script
set_compiler_property(PROPERTY linker_script -T)
# Flags to not track macro expansion
set_compiler_property(PROPERTY no_track_macro_expansion -ftrack-macro-expansion=0)