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Replace a cmake option with a preprocessor macro. #7469

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Merged
merged 1 commit into from
Mar 3, 2017
Merged

Replace a cmake option with a preprocessor macro. #7469

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8 changes: 8 additions & 0 deletions stdlib/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,14 @@ else()
append("-fno-sanitize=all" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)
endif()

# Do not enforce checks for LLVM's ABI-breaking build settings.
# The Swift runtime uses some header-only code from LLVM's ADT classes,
# but we do not want to link libSupport into the runtime. These checks rely
# on the presence of symbols in libSupport to identify how the code was
# built and cause link failures for mismatches. Without linking that library,
# we get link failures regardless, so instead, this just disables the checks.
append("-DLLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING=1" CMAKE_C_FLAGS CMAKE_CXX_FLAGS)

set(SWIFT_STDLIB_LIBRARY_BUILD_TYPES)
if(SWIFT_BUILD_DYNAMIC_STDLIB)
list(APPEND SWIFT_STDLIB_LIBRARY_BUILD_TYPES SHARED)
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1 change: 0 additions & 1 deletion utils/build-script-impl
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Expand Up @@ -724,7 +724,6 @@ function set_build_options_for_host() {
llvm_cmake_options+=(
-DLLVM_TOOL_COMPILER_RT_BUILD:BOOL="$(false_true ${SKIP_BUILD_COMPILER_RT})"
-DLLVM_BUILD_EXTERNAL_COMPILER_RT:BOOL="$(false_true ${SKIP_BUILD_COMPILER_RT})"
-DLLVM_DISABLE_ABI_BREAKING_CHECKS_ENFORCING:BOOL=TRUE
)

# If we are asked to not generate test targets for LLVM and or Swift,
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