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[compiler-rt] Make use of undefined symbols configurable

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We want to disable the use of undefined symbols on Fuchsia, but there
are cases where it might be desirable so may it configurable.

Differential Revision: https://reviews.llvm.org/D104728
This commit is contained in:
Petr Hosek 2021-06-22 11:03:37 -07:00
parent 6000749804
commit cadfaf2df4
1 changed files with 9 additions and 1 deletions
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10
compiler-rt/CMakeLists.txt
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@ -437,10 +437,18 @@ else()
endif()
append_list_if(COMPILER_RT_HAS_LIBC c SANITIZER_COMMON_LINK_LIBS)
if("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia")
list(APPEND SANITIZER_COMMON_LINK_LIBS zircon)
endif()
if("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia")
set(SANITIZER_NO_UNDEFINED_SYMBOLS_DEFAULT ON)
else()
set(SANITIZER_NO_UNDEFINED_SYMBOLS_DEFAULT OFF)
endif()
option(SANITIZER_NO_UNDEFINED_SYMBOLS "Report error on unresolved symbol references" ${SANITIZER_NO_UNDEFINED_SYMBOLS_DEFAULT})
if (SANITIZER_NO_UNDEFINED_SYMBOLS)
list(APPEND SANITIZER_COMMON_LINK_FLAGS -Wl,-z,defs)
list(APPEND SANITIZER_COMMON_LINK_LIBS zircon)
endif()
# TODO: COMPILER_RT_COMMON_CFLAGS and COMPILER_RT_COMMON_LINK_FLAGS are