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cmake: scripts: relative path define utility 

Add helper function sof_append_relative_path_definitions that
defines RELATIVE_PATH per source file for given target.

__FILE is not always suitable as C standard states that __FILE__ expands to
input file name, that usually is absolute path what will cause f.e. .rodata
size to be dependent on where project is physically located on the disk.

Signed-off-by: Janusz Jankowski <janusz.jankowski@linux.intel.com>
This commit is contained in:
Janusz Jankowski 2019-11-07 14:13:28 +01:00 committed by Liam Girdwood
parent 2f8fb81495
commit 24f3160977
1 changed files with 19 additions and 0 deletions
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19
scripts/cmake/misc.cmake
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@ -59,3 +59,22 @@ function(sof_add_static_library lib_name lib_path)
set_target_properties(${lib_name} PROPERTIES IMPORTED_LOCATION ${lib_abs_path})
target_link_libraries(sof_static_libraries INTERFACE ${lib_name})
endfunction()
# Appends literal with path of the source file relative to the project root
# It is useful if sources in given target need deterministic relative path
# to the actually compiled file.
# __FILE is not always suitable as C standard states that __FILE__ expands to
# input file name, that usually is absolute path what will cause f.e. .rodata
# size to be dependent on where project is physically located on the disk.
function(sof_append_relative_path_definitions target)
get_target_property(sources ${target} SOURCES)
foreach(src ${sources})
get_filename_component(ABS_PATH ${src} ABSOLUTE)
file(RELATIVE_PATH rel ${PROJECT_SOURCE_DIR} ${ABS_PATH})
set_property(
SOURCE ${src}
APPEND
PROPERTY COMPILE_DEFINITIONS
RELATIVE_FILE="${rel}")
endforeach()
endfunction()