[llvm] r294688 - [libFuzzer] Export external functions on tests.

[Marcos Pividori via llvm-commits]

Author: mpividori
Date: Thu Feb  9 19:40:28 2017
New Revision: 294688

URL: http://llvm.org/viewvc/llvm-project?rev=294688&view=rev
Log:
[libFuzzer] Export external functions on tests.

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

Modified:
    llvm/trunk/lib/Fuzzer/test/CMakeLists.txt

Modified: llvm/trunk/lib/Fuzzer/test/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Fuzzer/test/CMakeLists.txt?rev=294688&r1=294687&r2=294688&view=diff
==============================================================================
--- llvm/trunk/lib/Fuzzer/test/CMakeLists.txt (original)
+++ llvm/trunk/lib/Fuzzer/test/CMakeLists.txt Thu Feb  9 19:40:28 2017
@@ -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
 ###############################################################################