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buildsystem: Add an option to compress debug sections 

Compressing debug sections can reduce the output
ELF file size substantially.

Signed-off-by: Noah Pendleton <noah.pendleton@gmail.com>
pull/72686/head
Noah Pendleton 1 year ago committed by Carles Cufí
parent
60aeb4e6bc
commit
265da0df86
5 changed files with 24 additions and 0 deletions
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  1. 11
      CMakeLists.txt
  2. 5
      Kconfig.zephyr
  3. 2
      cmake/bintools/bintools_template.cmake
  4. 3
      cmake/bintools/gnu/target_bintools.cmake
  5. 3
      cmake/bintools/llvm/target_bintools.cmake

11
CMakeLists.txt
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@ -1792,6 +1792,17 @@ if(CONFIG_BUILD_OUTPUT_STRIPPED) @@ -1792,6 +1792,17 @@ if(CONFIG_BUILD_OUTPUT_STRIPPED)
)
endif()
if(CONFIG_BUILD_OUTPUT_COMPRESS_DEBUG_SECTIONS)
list(APPEND
post_build_commands
COMMAND $<TARGET_PROPERTY:bintools,elfconvert_command>
$<TARGET_PROPERTY:bintools,elfconvert_flag>
$<TARGET_PROPERTY:bintools,elfconvert_flag_compress_debug_sections>
$<TARGET_PROPERTY:bintools,elfconvert_flag_infile>${KERNEL_ELF_NAME}
$<TARGET_PROPERTY:bintools,elfconvert_flag_final>
)
endif()
if(CONFIG_BUILD_OUTPUT_EXE)
if (NOT CONFIG_NATIVE_LIBRARY)
list(APPEND

5
Kconfig.zephyr
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@ -784,6 +784,11 @@ config BUILD_OUTPUT_STRIPPED @@ -784,6 +784,11 @@ config BUILD_OUTPUT_STRIPPED
Build a stripped binary zephyr/zephyr.strip in the build directory.
The name of this file can be customized with CONFIG_KERNEL_BIN_NAME.
config BUILD_OUTPUT_COMPRESS_DEBUG_SECTIONS
bool "Compress debug sections in the ELF file"
help
Compress debug sections in the ELF file to reduce the file size.
config BUILD_OUTPUT_ADJUST_LMA
string
help

2
cmake/bintools/bintools_template.cmake
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@ -66,6 +66,7 @@ @@ -66,6 +66,7 @@
# elfconvert_flag_final : Flags that must always be applied last at the elfconvert command
# elfconvert_flag_strip_all : Flag that is used for stripping all symbols when converting
# elfconvert_flag_strip_debug : Flag that is used to strip debug symbols when converting
# elfconvert_flag_compress_debug_sections: Flag that is used to compress debug sections when converting
# elfconvert_flag_intarget : Flag for specifying target used for infile
# elfconvert_flag_outtarget : Flag for specifying target to use for converted file.
# Target value must be one of those listed described by: elfconvert_formats
@ -141,6 +142,7 @@ set_property(TARGET bintools PROPERTY elfconvert_command ${CMAKE_COMMAND} -E ech @@ -141,6 +142,7 @@ set_property(TARGET bintools PROPERTY elfconvert_command ${CMAKE_COMMAND} -E ech
set_property(TARGET bintools PROPERTY elfconvert_formats "")
set_property(TARGET bintools PROPERTY elfconvert_flag "")
set_property(TARGET bintools PROPERTY elfconvert_flag_final "")
set_property(TARGET bintools PROPERTY elfconvert_flag_compress_debug_sections "")
set_property(TARGET bintools PROPERTY elfconvert_flag_outtarget "")
set_property(TARGET bintools PROPERTY elfconvert_flag_section_remove "")
set_property(TARGET bintools PROPERTY elfconvert_flag_gapfill "")

3
cmake/bintools/gnu/target_bintools.cmake
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@ -7,6 +7,7 @@ @@ -7,6 +7,7 @@
# elfconvert_flag_final : empty
# elfconvert_flag_strip_all : -S
# elfconvert_flag_strip_debug : -g
# elfconvert_flag_compress_debug_sections: --compress-debug-sections
# elfconvert_flag_intarget : --input-target=
# elfconvert_flag_outtarget : --output-target=
# elfconvert_flag_section_remove: --remove-section=
@ -34,6 +35,8 @@ set_property(TARGET bintools PROPERTY elfconvert_flag_final "") @@ -34,6 +35,8 @@ set_property(TARGET bintools PROPERTY elfconvert_flag_final "")
set_property(TARGET bintools PROPERTY elfconvert_flag_strip_all "-S")
set_property(TARGET bintools PROPERTY elfconvert_flag_strip_debug "-g")
set_property(TARGET bintools PROPERTY elfconvert_flag_compress_debug_sections "--compress-debug-sections")
set_property(TARGET bintools PROPERTY elfconvert_flag_intarget "--input-target=")
set_property(TARGET bintools PROPERTY elfconvert_flag_outtarget "--output-target=")

3
cmake/bintools/llvm/target_bintools.cmake
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@ -7,6 +7,7 @@ @@ -7,6 +7,7 @@
# elfconvert_flag_final : empty
# elfconvert_flag_strip_all : -S
# elfconvert_flag_strip_debug : -g
# elfconvert_flag_compress_debug_sections: --compress-debug-sections
# elfconvert_flag_intarget : --input-target=
# elfconvert_flag_outtarget : --output-target=
# elfconvert_flag_section_remove: --remove-section=
@ -34,6 +35,8 @@ set_property(TARGET bintools PROPERTY elfconvert_flag_final "") @@ -34,6 +35,8 @@ set_property(TARGET bintools PROPERTY elfconvert_flag_final "")
set_property(TARGET bintools PROPERTY elfconvert_flag_strip_all "-S")
set_property(TARGET bintools PROPERTY elfconvert_flag_strip_debug "-g")
set_property(TARGET bintools PROPERTY elfconvert_flag_compress_debug_sections "--compress-debug-sections")
set_property(TARGET bintools PROPERTY elfconvert_flag_intarget "--input-target=")
set_property(TARGET bintools PROPERTY elfconvert_flag_outtarget "--output-target=")

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