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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

llvm-svn: 294688
This commit is contained in:
Marcos Pividori 2017-02-10 01:40:28 +00:00
parent 03ad19858d
commit b58308ad4f
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
###############################################################################