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[libFuzzer] Export external functions on tests.

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We need to export external functions so they are found when calling
GetProcAddress() on Windows. But we can't use `__declspec(dllexport)` because
we want the targets to be completely independent from the fuzz engines and don't
depend on other header files. Also, we don't want to include platform specific
code managed with conditional macros.
So, the solution is to add the exported symbols with linker flags in cmake.

Differential revision: https://reviews.llvm.org/D29752

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294688 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marcos Pividori 2017-02-10 01:40:28 +00:00
parent d9191ae5c6
commit 671eb85b72
1 changed files with 12 additions and 0 deletions
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12
lib/Fuzzer/test/CMakeLists.txt
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@ -142,6 +142,18 @@ foreach(Test ${Tests})
add_libfuzzer_test(${Test} SOURCES ${Test}.cpp)
endforeach()
function(test_export_symbol target symbol)
if(MSVC)
set_target_properties(LLVMFuzzer-${target} PROPERTIES LINK_FLAGS
"-export:${symbol}")
endif()
endfunction()
test_export_symbol(InitializeTest "LLVMFuzzerInitialize")
test_export_symbol(BogusInitializeTest "LLVMFuzzerInitialize")
test_export_symbol(CustomCrossOverTest "LLVMFuzzerCustomCrossOver")
test_export_symbol(CustomMutatorTest "LLVMFuzzerCustomMutator")
###############################################################################
# Unit tests
###############################################################################