Merge pull request #234 from dagar/cmake

Cmake fixes for #231 and #232

CMakeLists.txt

@@ -66,7 +66,7 @@ ExternalProject_Add(libunwind
                     PREFIX libunwind
                     SOURCE_DIR ${CMAKE_SOURCE_DIR}/libunwind
                     UPDATE_COMMAND autoreconf -i
-                    CONFIGURE_COMMAND ${CMAKE_SOURCE_DIR}/libunwind/configure CC=${CMAKE_C_COMPILER} CXX=${CMAKE_CXX_COMPILER} CFLAGS=${LIBUNWIND_FLAGS} CXXFLAGS=${LIBUNWIND_FLAGS} --prefix=${CMAKE_BINARY_DIR}/libunwind --enable-shared=0 ${LIBUNWIND_DEBUG} ${LIBUNWIND_DEBUG_FRAME}
+                    CONFIGURE_COMMAND ${CMAKE_SOURCE_DIR}/libunwind/configure CFLAGS=${LIBUNWIND_FLAGS} CXXFLAGS=${LIBUNWIND_FLAGS} --prefix=${CMAKE_BINARY_DIR}/libunwind --enable-shared=0 ${LIBUNWIND_DEBUG} ${LIBUNWIND_DEBUG_FRAME}
                     LOG_UPDATE ON
                     LOG_CONFIGURE ON
                     LOG_BUILD ON
@@ -91,7 +91,7 @@ else()
 endif()
 
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Werror -Wreturn-type -Wno-sign-compare -Wno-unused -Wno-sign-compare -Wno-unused-parameter -fno-omit-frame-pointer")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CMAKE_C_FLAGS} -std=c++11 -fno-rtti -fexceptions -fvisibility-inlines-hidden -ffunction-sections -fdata-sections -Woverloaded-virtual -Wno-invalid-offsetof -Wcast-qual -Wno-sign-conversion -Wnon-virtual-dtor -Winit-self -Wmissing-include-dirs -Wstrict-overflow=5 -Wpointer-arith -Wtype-limits -Wwrite-strings -Wempty-body -Waggregate-return -Wmissing-field-initializers -Wredundant-decls -Winline -Wint-to-pointer-cast -Wlong-long -Wvla")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CMAKE_C_FLAGS} -std=c++11 -fPIC -fno-rtti -fexceptions -fvisibility-inlines-hidden -ffunction-sections -fdata-sections -Woverloaded-virtual -Wno-invalid-offsetof -Wcast-qual -Wno-sign-conversion -Wnon-virtual-dtor -Winit-self -Wmissing-include-dirs -Wstrict-overflow=5 -Wpointer-arith -Wtype-limits -Wwrite-strings -Wempty-body -Waggregate-return -Wmissing-field-initializers -Wredundant-decls -Winline -Wint-to-pointer-cast -Wlong-long -Wvla")
 
 set(CLANG_FLAGS "${CLANG_FLAGS} -Wimplicit-int -Wstrict-prototypes -Wold-style-definition -Wnested-externs -Wpointer-to-int-cast -Wno-mismatched-tags -Wno-extern-c-compat")
 if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")