8347120: Launchers should not have java headers on include path

Reviewed-by: dholmes, ihse

Author: erikj79

make/common/JdkNativeCompilation.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2018, 2024, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2018, 2025, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -266,6 +266,9 @@ JDK_RCFLAGS=$(RCFLAGS) \
 #     will be replaced with proper values for hotspot.
 #   HEADERS_FROM_SRC -- if false, does not add source dirs automatically as
 #     header include dirs. (Defaults to true.)
+#   JAVA_HEADERS -- if false, does not add the directory with the generated
+#     headers from the Java compilation of the current module to the search
+#     path for include files. (Defaults to true.)
 #   JDK_LIBS -- libraries generated by the JDK build system to link against.
 #     These take the form <module>:<basename>. For the current module, the
 #     module name and colon can be omitted. The basename should be specified
@@ -385,7 +388,9 @@ define SetupJdkNativeCompilationBody
 
   # Add the module specific java header dir
   ifneq ($$(MODULE), )
-    $1_SRC_HEADER_FLAGS += $$(addprefix -I, $$(call GetJavaHeaderDir, $$(MODULE)))
+    ifneq ($$($1_JAVA_HEADERS), false)
+      $1_SRC_HEADER_FLAGS += $$(addprefix -I, $$(call GetJavaHeaderDir, $$(MODULE)))
+    endif
   endif
 
   $1_JDK_LIBS += $$($1_JDK_LIBS_$$(OPENJDK_TARGET_OS))

make/common/modules/LauncherCommon.gmk

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2011, 2024, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2011, 2025, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -145,6 +145,7 @@ define SetupBuildLauncherBody
           $$($1_CFLAGS), \
       CFLAGS_windows := $$($1_CFLAGS_windows), \
       EXTRA_HEADER_DIRS := java.base:libjvm, \
+      JAVA_HEADERS := false, \
       DISABLED_WARNINGS_gcc := unused-function unused-variable, \
       DISABLED_WARNINGS_clang := unused-function, \
       LDFLAGS := $$($1_LDFLAGS), \