Fix issues related to export directives

CMakeLists.txt

@@ -243,8 +243,9 @@ endif()
 # ---- Generate Build Info Headers ----
 
 # used in export header generated below
-if(NOT CPPTRACE_BUILD_SHARED)
+if(build_type STREQUAL "STATIC")
   target_compile_definitions(${target_name} PUBLIC CPPTRACE_STATIC_DEFINE)
+  set(CPPTRACE_STATIC_DEFINE TRUE)
 endif()
 
 # ---- Library Properties ----

cmake/in/cpptrace-config-cmake.in

@@ -15,3 +15,7 @@ if(NOT TARGET cpptrace::cpptrace)
   include("${CMAKE_CURRENT_LIST_DIR}/@package_name@-targets.cmake")
 
 endif()
+
+if(@CPPTRACE_STATIC_DEFINE@)
+  target_compile_definitions(cpptrace::cpptrace INTERFACE CPPTRACE_STATIC_DEFINE)
+endif()