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| author | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2015-05-05 20:13:39 +0000 |
|---|---|---|
| committer | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2015-05-05 20:13:39 +0000 |
| commit | 976974a5d9023fe109660275ec5f6c8e6620e544 (patch) | |
| tree | 52b754192af36bbb515b864359af8740db31a00f /lib/asan/CMakeLists.txt | |
| parent | 54d4b630ce2f5fcfe9de86ebe72e26bf7f1594a6 (diff) | |
Build ASan runtime library with -z global on Android.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@236537 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/asan/CMakeLists.txt')
| -rw-r--r-- | lib/asan/CMakeLists.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/asan/CMakeLists.txt b/lib/asan/CMakeLists.txt index e09c94d8d..d9bddb3c6 100644 --- a/lib/asan/CMakeLists.txt +++ b/lib/asan/CMakeLists.txt @@ -37,9 +37,22 @@ append_no_rtti_flag(ASAN_CFLAGS) set(ASAN_COMMON_DEFINITIONS ASAN_HAS_EXCEPTIONS=1) +set(ASAN_DYNAMIC_LINK_FLAGS) + if(ANDROID) list(APPEND ASAN_COMMON_DEFINITIONS ASAN_LOW_MEMORY=1) +# On Android, -z global does not do what it is documented to do. +# On Android, -z global moves the library ahead in the lookup order, +# placing it right after the LD_PRELOADs. This is used to compensate for the fact +# that Android linker does not look at the dependencies of the main executable +# that aren't dependencies of the current DSO when resolving symbols from said DSO. +# As a net result, this allows running ASan executables without LD_PRELOAD-ing the +# ASan runtime library. +# The above is applicable to L MR1 or newer. + if (COMPILER_RT_HAS_Z_GLOBAL) + list(APPEND ASAN_DYNAMIC_LINK_FLAGS -Wl,-z,global) + endif() endif() set(ASAN_DYNAMIC_DEFINITIONS @@ -143,6 +156,7 @@ else() $<TARGET_OBJECTS:RTUbsan_cxx.${arch}> ${ASAN_COMMON_RUNTIME_OBJECTS} CFLAGS ${ASAN_DYNAMIC_CFLAGS} + LINKFLAGS ${ASAN_DYNAMIC_LINK_FLAGS} DEFS ${ASAN_DYNAMIC_DEFINITIONS}) target_link_libraries(clang_rt.asan-dynamic-${arch} ${ASAN_DYNAMIC_LIBS}) add_dependencies(asan clang_rt.asan-dynamic-${arch}) |