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cmake: enable linker warnings on common symbols

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GCC since version 10 uses -fno-common by default and will not emit
common symbols. Enable this option to find the occurrences of common
symbols in ESP-IDF.

Closes https://github.com/espressif/esp-idf/issues/5080
This commit is contained in:
Ivan Grokhotkov
2022-01-14 17:56:57 +01:00
committed by Anton Maklakov
parent 0ac6a105ef
commit 9720cb72cb
1 changed files with 1 additions and 0 deletions
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CMakeLists.txt
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@@ -195,6 +195,7 @@ if(CONFIG_ESP_SYSTEM_USE_EH_FRAME)
endif() endif()
list(APPEND link_options "-fno-lto") list(APPEND link_options "-fno-lto")
list(APPEND link_options "-Wl,--warn-common")
if(CONFIG_IDF_TARGET_LINUX AND CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin") if(CONFIG_IDF_TARGET_LINUX AND CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin")
list(APPEND link_options "-Wl,-dead_strip") list(APPEND link_options "-Wl,-dead_strip")