diff -up ./cppmyth/CMakeLists.txt.orig ./cppmyth/CMakeLists.txt
--- ./cppmyth/CMakeLists.txt.orig	2014-12-10 19:20:51.000000000 +0100
+++ ./cppmyth/CMakeLists.txt	2014-12-24 21:30:47.899428637 +0100
@@ -29,8 +29,8 @@ if (MSVC)
 endif ()
 
 if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
-   set (CMAKE_C_FLAGS "-fPIC")
-   set (CMAKE_CXX_FLAGS "-fPIC")
+   set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
+   set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
 endif ()
 
 ###############################################################################
diff -up ./demo/CMakeLists.txt.orig ./demo/CMakeLists.txt
--- ./demo/CMakeLists.txt.orig	2014-12-10 19:20:51.000000000 +0100
+++ ./demo/CMakeLists.txt	2014-12-24 21:31:16.025634705 +0100
@@ -22,8 +22,8 @@ if (MSVC)
 endif (MSVC)
 
 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
-   set(CMAKE_C_FLAGS "-fPIC")
-   set(CMAKE_CXX_FLAGS "-fPIC")
+   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
+   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
 endif(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
 
 ###############################################################################
diff -up ./test/CMakeLists.txt.orig ./test/CMakeLists.txt
--- ./test/CMakeLists.txt.orig	2014-12-10 19:20:51.000000000 +0100
+++ ./test/CMakeLists.txt	2014-12-24 21:31:04.106971140 +0100
@@ -22,8 +22,8 @@ if (MSVC)
 endif (MSVC)
 
 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
-   set(CMAKE_C_FLAGS "-fPIC")
-   set(CMAKE_CXX_FLAGS "-fPIC")
+   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
+   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
 endif(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
 
 ###############################################################################