Build PIE binaries when cross-compiling to Android.

This change also removes CMAKE_LINK_FLAGS setting that seems to be ignored by cmake.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201654 91177308-0d34-0410-b5e6-96231b3b80d8

cmake/platforms/Android.cmake

@@ -25,4 +25,5 @@ SET(ANDROID "1" CACHE STRING "ANDROID" FORCE)
 SET(ANDROID_COMMON_FLAGS "-target arm-linux-androideabi --sysroot=${LLVM_ANDROID_TOOLCHAIN_DIR}/sysroot -B${LLVM_ANDROID_TOOLCHAIN_DIR}")
 SET(CMAKE_C_FLAGS "${ANDROID_COMMON_FLAGS}" CACHE STRING "toolchain_cflags" FORCE)
 SET(CMAKE_CXX_FLAGS "${ANDROID_COMMON_FLAGS}" CACHE STRING "toolchain_cxxflags" FORCE)
-SET(CMAKE_LINK_FLAGS "${ANDROID_COMMON_FLAGS}" CACHE STRING "toolchain_linkflags" FORCE)
+SET(CMAKE_EXE_LINKER_FLAGS "-pie" CACHE STRING "toolchain_exelinkflags" FORCE)
+