https://github.com/cburstedde/libsc/pull/54
https://github.com/cburstedde/libsc/pull/55

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2ce08e2..a588beb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,6 +8,8 @@ HOMEPAGE_URL https://www.p4est.org/
 DESCRIPTION "The SC library supports parallel scientific applications."
 VERSION ${PROJECT_VERSION})
 
+set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+
 include(CTest)
 
 include(cmake/options.cmake)
@@ -28,8 +30,7 @@ if(MPI_FOUND)
 endif()
 
 # --- libb64
-add_library(libb64 OBJECT libb64/cencode.c libb64/cdecode.c
-                          libb64/b64dec.c libb64/b64enc.c)
+add_library(libb64 OBJECT libb64/cencode.c libb64/cdecode.c)
 target_include_directories(libb64 PRIVATE libb64)
 
 # --- sc
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a588beb..aff0eca 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -64,8 +64,8 @@ install(DIRECTORY ${PROJECT_SOURCE_DIR}/src/ ${PROJECT_SOURCE_DIR}/src/sc_builti
 
 install(TARGETS sc
   EXPORT ${PROJECT_NAME}Targets
-  ARCHIVE DESTINATION lib
-  LIBRARY DESTINATION lib)
+  ARCHIVE DESTINATION ${library_reldir}
+  LIBRARY DESTINATION ${library_reldir})
 
 add_subdirectory(src)