Replace the cmake generated export header

CMakeLists.txt

@@ -247,14 +247,6 @@ if(NOT CPPTRACE_BUILD_SHARED)
   target_compile_definitions(${target_name} PUBLIC CPPTRACE_STATIC_DEFINE)
 endif()
 
-# generate header file with export macros prefixed with BASE_NAME
-include(GenerateExportHeader)
-generate_export_header(
-  ${target_name}
-  BASE_NAME cpptrace
-  EXPORT_FILE_NAME include/cpptrace/cpptrace_export.hpp
-)
-
 # ---- Library Properties ----
 
 # Hide all symbols by default

include/cpptrace/cpptrace.hpp

@@ -9,8 +9,33 @@
 #include <type_traits>
 #include <utility>
 #include <vector>
-// Generated by the build system.
+
-#include <cpptrace/cpptrace_export.hpp>
+#ifdef _WIN32
+#define CPPTRACE_EXPORT_ATTR __declspec(dllexport)
+#define CPPTRACE_IMPORT_ATTR __declspec(dllimport)
+#define CPPTRACE_NO_EXPORT_ATTR
+#define CPPTRACE_DEPRECATED_ATTR __declspec(deprecated)
+#else
+#define CPPTRACE_EXPORT_ATTR __attribute__((visibility("default")))
+#define CPPTRACE_IMPORT_ATTR __attribute__((visibility("default")))
+#define CPPTRACE_NO_EXPORT_ATTR __attribute__((visibility("hidden")))
+#define CPPTRACE_DEPRECATE_ATTR __attribute__((__deprecated__))
+#endif
+
+#ifdef CPPTRACE_STATIC_DEFINE
+#  define CPPTRACE_EXPORT
+#  define CPPTRACE_NO_EXPORT
+#else
+#  ifndef CPPTRACE_EXPORT
+#    ifdef cpptrace_lib_EXPORTS
+        /* We are building this library */
+#      define CPPTRACE_EXPORT CPPTRACE_EXPORT_ATTR
+#    else
+        /* We are using this library */
+#      define CPPTRACE_EXPORT CPPTRACE_IMPORT_ATTR
+#    endif
+#  endif
+#endif
 
 #if __cplusplus >= 202002L
  #ifdef __has_include