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generic cmake: Always use gc-sections when linking IDF libraries

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Required for some IDF binary libraries

Reported on forum: https://esp32.com/viewtopic.php?f=13&t=7535&p=34863#p34852

TW27733
This commit is contained in:
Angus Gratton
2018-12-04 10:47:00 +11:00
committed by Angus Gratton
parent 3bc970c5f4
commit 89826e8f47
2 changed files with 5 additions and 3 deletions
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3
tools/cmake/idf_functions.cmake
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@@ -246,6 +246,9 @@ function(idf_link_components target components)
endforeach() endforeach()
if(libraries) if(libraries)
# gc-sections is necessary for linking some IDF binary libraries
# (and without it, IDF apps are much larger than they should be)
target_link_libraries(${target} "-Wl,--gc-sections")
target_link_libraries(${target} "-Wl,--start-group") target_link_libraries(${target} "-Wl,--start-group")
target_link_libraries(${target} ${libraries}) target_link_libraries(${target} ${libraries})
message(STATUS "Component libraries: ${IDF_COMPONENT_LIBRARIES}") message(STATUS "Component libraries: ${IDF_COMPONENT_LIBRARIES}")

3
tools/cmake/project.cmake
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@@ -102,8 +102,7 @@ macro(project name)
set(mapfile "${CMAKE_PROJECT_NAME}.map") set(mapfile "${CMAKE_PROJECT_NAME}.map")
target_link_libraries(${IDF_PROJECT_EXECUTABLE} "-Wl,--gc-sections \ target_link_libraries(${IDF_PROJECT_EXECUTABLE} "-Wl,--cref -Wl,--Map=${mapfile}")
-Wl,--cref -Wl,--Map=${mapfile}")
set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" APPEND PROPERTY set_property(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" APPEND PROPERTY
ADDITIONAL_MAKE_CLEAN_FILES ADDITIONAL_MAKE_CLEAN_FILES