Move CMAKE_POSITION_INDEPENDENT_CODE to CMakeCommon and disable -pie. F…

…ixes indilib#1504

CMakeLists.txt

@@ -5,9 +5,6 @@ PROJECT(libindi C CXX)
 # to always look for includes there:
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
 
-# Build Position Independent Code
-set(CMAKE_POSITION_INDEPENDENT_CODE ON)
-
 LIST(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake_modules/")
 LIST(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../cmake_modules/")
 include(GNUInstallDirs)

cmake_modules/CMakeCommon.cmake

@@ -6,6 +6,9 @@ include(CheckCCompilerFlag)
     #SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
 #ENDIF ()
 
+# Build Position Independent Code
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
 # C++14 Support
 if (NOT ANDROID)
 set(CMAKE_CXX_STANDARD 14)
@@ -33,7 +36,6 @@ IF (UNIX OR APPLE OR ANDROID)
     IF (${COMPATIBLE_FORTIFY_SOURCE})
         SET(SEC_COMP_FLAGS "-D_FORTIFY_SOURCE=2")
     ENDIF ()
-    SET(SEC_COMP_FLAGS "${SEC_COMP_FLAGS} -fstack-protector-all -fPIE")
     # Make sure to add optimization flag. Some systems require this for _FORTIFY_SOURCE.
     IF (NOT CMAKE_BUILD_TYPE MATCHES "MinSizeRel" AND NOT CMAKE_BUILD_TYPE MATCHES "Release" AND NOT CMAKE_BUILD_TYPE MATCHES "Debug")
         SET(SEC_COMP_FLAGS "${SEC_COMP_FLAGS} -O1")
@@ -47,9 +49,6 @@ IF (UNIX OR APPLE OR ANDROID)
     IF (NOT APPLE AND NOT CYGWIN AND NOT ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
         SET(SEC_LINK_FLAGS "${SEC_LINK_FLAGS} -Wl,-z,nodump -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now")
     ENDIF ()
-    IF (NOT ANDROID AND NOT APPLE)
-        SET(SEC_LINK_FLAGS "${SEC_LINK_FLAGS} -pie")
-    ENDIF ()
     SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${SEC_LINK_FLAGS}")
     SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${SEC_LINK_FLAGS}")
 ENDIF ()