Fix install components for main projectM library.

Allows users to install only runtime libraries OR development files, e.g. to create separate "libprojectM" and "libprojectM-dev" packages on Linux.

Author: kblaschke

src/libprojectM/CMakeLists.txt

@@ -164,10 +164,10 @@ add_library(libprojectM::projectM ALIAS projectM)
 
 install(TARGETS projectM
         EXPORT libprojectMTargets
-        LIBRARY DESTINATION "${PROJECTM_LIB_DIR}"
-        RUNTIME DESTINATION "${PROJECTM_LIB_DIR}"
-        ARCHIVE DESTINATION "${PROJECTM_LIB_DIR}"
-        COMPONENT Runtime
+        LIBRARY DESTINATION "${PROJECTM_LIB_DIR}" COMPONENT Runtime
+        RUNTIME DESTINATION "${PROJECTM_LIB_DIR}" COMPONENT Runtime
+        ARCHIVE DESTINATION "${PROJECTM_LIB_DIR}" COMPONENT Devel
+        PUBLIC_HEADER DESTINATION "${PROJECTM_INCLUDE_DIR}/libprojectM" COMPONENT Devel
         )
 
 if(ENABLE_CXX_INTERFACE)