fix phasar install destination to avoid messing with system-widely installed libs

Author: Martin Mory

CMakeLists.txt

@@ -15,6 +15,8 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
+include(GNUInstallDirs)
+
 set_property(GLOBAL PROPERTY TARGET_MESSAGES OFF)
 
 if (NOT CMAKE_BUILD_TYPE)
@@ -99,7 +101,10 @@ include_directories(
   ${PHASAR_SRC_DIR}/include
 )
 
-set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
+
+set(PHASAR_INSTALL_LIBDIR ${CMAKE_INSTALL_LIBDIR}/phasar)
+
+set(CMAKE_INSTALL_RPATH ${CMAKE_INSTALL_PREFIX}/${PHASAR_INSTALL_LIBDIR})
 set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 
 if (LLVM_ENABLE_LIBCXX)

cmake/phasar_macros.cmake

@@ -193,19 +193,19 @@ macro(add_phasar_library name)
   if(PHASAR_IN_TREE)
     install(TARGETS ${name}
       EXPORT LLVMExports
-      LIBRARY DESTINATION lib
-      ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
+      LIBRARY DESTINATION ${PHASAR_INSTALL_LIBDIR}
+      ARCHIVE DESTINATION ${PHASAR_INSTALL_LIBDIR})
   else()
     install(TARGETS ${name}
       EXPORT phasarTargets
-      LIBRARY DESTINATION lib
-      ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
+      LIBRARY DESTINATION ${PHASAR_INSTALL_LIBDIR}
+      ARCHIVE DESTINATION ${PHASAR_INSTALL_LIBDIR})
     install(TARGETS ${name}
       EXPORT ${name}-targets
       COMPONENT ${component_name}
       DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/phasar
-      LIBRARY DESTINATION lib
-      ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
+      LIBRARY DESTINATION ${PHASAR_INSTALL_LIBDIR}
+      ARCHIVE DESTINATION ${PHASAR_INSTALL_LIBDIR})
     install(EXPORT ${name}-targets
       FILE ${name}-targets.cmake
       NAMESPACE phasar::