Build configurations shouldn't be done in svn controlled files, so I

finally created a solution to avoid that: Header files that contain
configuration settings (and nothing else) go to build/config_headers.
To change settings, create a directory build/user_config_headers (which
is ignored by svn), copy the respective header there and modify it at
your leisure. Currently only tracing_config.h has been moved to the new
location, but more files will follow eventually. It is also recommended
to move optional macro definitions in Jamfile (as for BFS) to a config
header instead; the build system will then automatically rebuild on
changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24611 a95241bf-73f2-0310-859d-f6bbb57e9c96

build/config_headers/tracing_config.h

@@ -0,0 +1,29 @@
+#ifndef KERNEL_TRACING_CONFIG_H
+#define KERNEL_TRACING_CONFIG_H
+
+// general settings
+
+// enable tracing (0/1)
+#ifndef ENABLE_TRACING
+#	define ENABLE_TRACING 0
+#endif
+
+// tracing buffer size (in bytes)
+#ifndef MAX_TRACE_SIZE
+#	define MAX_TRACE_SIZE (1024 * 1024)
+#endif
+
+
+// macros that enable tracing for individual components
+
+//#define BMESSAGE_TRACING
+//#define BLOCK_CACHE_TRANSACTION_TRACING
+//#define KERNEL_HEAP_TRACING
+//#define RUNTIME_LOADER_TRACING
+//#define SIGNAL_TRACING
+//#define SYSCALL_TRACING
+//#define SYSCALL_TRACING_IGNORE_KTRACE_OUTPUT
+//#define TEAM_TRACING
+//#define USER_MALLOC_TRACING
+
+#endif	// KERNEL_TRACING_CONFIG_H

build/jam/BuildSetup

@@ -113,6 +113,10 @@ HAIKU_BONE_COMPATIBLE_PLATFORMS = haiku bone dano haiku_host ;
 HAIKU_DANO_COMPATIBLE_PLATFORMS = haiku dano haiku_host ;
 HAIKU_HAIKU_COMPATIBLE_PLATFORMS = haiku haiku_host ;
 
+# configuration header directories
+HAIKU_CONFIG_HEADERS = [ FDirName $(HAIKU_TOP) build user_config_headers ]
+	[ FDirName $(HAIKU_TOP) build config_headers ] ;
+
 
 #pragma mark -
 

build/jam/OverriddenJamRules

@@ -69,7 +69,8 @@ rule Object
 		# yacc, lex, etc) are located in $(LOCATE_TARGET), possibly
 		# different from $(SEARCH_SOURCE).
 
-		headers = $(SEARCH_SOURCE) $(SUBDIRHDRS) $(HDRS) ;
+		headers = $(HAIKU_CONFIG_HEADERS) $(SEARCH_SOURCE) $(SUBDIRHDRS)
+			$(HDRS) ;
 		sysHeaders = $(SUBDIRSYSHDRS) $(SYSHDRS) ;
 		defines = $(DEFINES) ;