* We do now have a special "_haiku_revision" section in our libroot,

containing the Haiku SVN revision number which is used by uname(). The
  value is 0 when built, but updated by the build system before copying
  libroot to the image (new rule CopySetHaikuRevision).
* For AboutHaiku we no longer write the SVN revision number into a
  resource. Instead we use the uname() info.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20082 a95241bf-73f2-0310-859d-f6bbb57e9c96

build/jam/FileRules

@@ -217,3 +217,35 @@ rule ObjectReferences
 	}
 }
 
+rule CopySetHaikuRevision target : source
+{
+	# CopySetHaikuRevision <target> : <source>
+	#
+	# Copy <source> to <target>, writing the SVN revision of the working root
+	# directory into the haiku revision section of <target>.
+	#
+	# <target> - Output file target. Gristed and located target.
+	# <source> - ELF object to be copied. Gristed and located target.
+
+	# If existent, make the target depend on the .svn/entries file in the
+	# root directory, so it gets updated when the revision changes due to
+	# "svn up".
+	if [ Glob [ FDirName $(HAIKU_TOP) .svn ] : entries ] {
+		local svnEntries = <haiku-rootdir-svn>entries ;
+		SEARCH on $(svnEntries) = [ FDirName $(HAIKU_TOP) .svn ] ;
+		Depends $(target) : $(svnEntries) ;
+	}
+
+	Depends $(target) : <build>copyattr <build>set_haiku_revision $(source) ;
+	CopySetHaikuRevision1 $(target)
+		: <build>copyattr <build>set_haiku_revision $(source) ;
+}
+
+actions CopySetHaikuRevision1
+{
+	$(HOST_ADD_BUILD_COMPATIBILITY_LIB_DIR)
+	revision=`(svn info $(HAIKU_TOP) 2> /dev/null || echo Revision: 0) |
+		grep Revision | awk '{printf $2}'`
+	$(2[1]) --data $(2[3]) $(1) &&
+	$(2[2]) $(1) ${revision}
+}

build/jam/HaikuImage

@@ -48,8 +48,8 @@ BEOS_DEMOS = BitmapDrawing Chart $(X86_ONLY)GLTeapot PictureTest Playground
 BEOS_SYSTEM_LIB = libbe.so $(HAIKU_LIBSTDC++) libmedia.so libtracker.so
 	libtranslation.so libnetwork.so libdebug.so libbsd.so libmail.so
 	libtextencoding.so libz.so libfreetype.so libpng.so libmidi.so libmidi2.so
-	libdevice.so libgame.so libscreensaver.so libroot.so $(X86_ONLY)libGL.so
-	libfluidsynth.so libqoca.so
+	libdevice.so libgame.so libscreensaver.so <revisioned>libroot.so
+	$(X86_ONLY)libGL.so libfluidsynth.so libqoca.so
 ;
 BEOS_SYSTEM_SERVERS = registrar debug_server syslog_daemon media_server net_server
 	media_addon_server input_server app_server fake_app_server midi_server print_server

src/apps/abouthaiku/AboutHaiku.cpp

@@ -31,6 +31,7 @@
 
 #include <stdio.h>
 #include <time.h>
+#include <sys/utsname.h>
 
 
 #define SCROLL_CREDITS_VIEW 'mviv'
@@ -178,18 +179,17 @@ AboutView::AboutView(const BRect &rect)
 			strcpy(string, versionInfo.short_info);
 	}
 
-	// Add revision from resources
-	BResources* resources = be_app->AppResources();
-	char version[32];
-	size_t size;
-	const char* versionResource = (const char *)resources->LoadResource(
-		B_STRING_TYPE, "SVN:REVISION", &size);
-	if (versionResource != NULL)
-		strlcpy(version, versionResource, min_c(size + 1, sizeof(version)));
-	if (versionResource != NULL && strcmp(version, "unknown") != 0) {
-		strlcat(string, " (Revision ", sizeof(string));
-		strlcat(string, version, sizeof(string));
-		strlcat(string, ")", sizeof(string));
+	// Add revision from uname() info
+	utsname unameInfo;
+	if (uname(&unameInfo) == 0) {
+		long revision;
+		if (sscanf(unameInfo.version, "r%ld", &revision) == 1) {
+			char version[16];
+			snprintf(version, sizeof(version), "%ld", revision);
+			strlcat(string, " (Revision ", sizeof(string));
+			strlcat(string, version, sizeof(string));
+			strlcat(string, ")", sizeof(string));
+		}
 	}
 
 	stringView = new BStringView(r, "ostext", string);

src/apps/abouthaiku/Jamfile

@@ -6,25 +6,6 @@ if $(TARGET_PLATFORM) = r5 {
 	SubDirC++Flags -DR5_COMPATIBLE ;
 }
 
-rule GenerateRevisionFile
-{
-	MakeLocateCommonPlatform $(1) ;
-	Always $(1) ;
-		# we want to rebuild the resources everytime AboutHaiku
-		# is built to keep them up-to-date
-}
-
-actions GenerateRevisionFile
-{
-	(svn info $(HAIKU_TOP) 2> /dev/null || echo Revision: unknown) |
-		grep Revision | awk '{printf $2}' > $(1)
-}
-
-local revisionFile = [ FGristFiles haiku-revision ] ;
-GenerateRevisionFile $(revisionFile) ;
-
-AddFileDataResource AboutHaiku : CSTR:201:SVN:REVISION : $(revisionFile) ;
-
 Application AboutHaiku :
 	AboutHaiku.cpp
 	: libbe.so libtranslation.so libroot.so

src/system/libroot/Jamfile

@@ -48,5 +48,16 @@ SharedLibrary libroot.so
 	$(librootObjects:G=nogrist)
 ;
 
+
+# Copy libroot.so and update the copy's revision section. We link everything
+# against the original, but the copy will end up on the disk image (this way
+# we avoid unnecessary dependencies). The copy will be located in a subdirectory.
+if $(TARGET_PLATFORM) = haiku {
+	MakeLocate <revisioned>libroot.so
+		: [ FDirName $(TARGET_DEBUG_$(DEBUG)_LOCATE_TARGET) revisioned ] ;
+	CopySetHaikuRevision <revisioned>libroot.so : libroot.so ;
+}
+
+
 SubInclude HAIKU_TOP src system libroot os ;
 SubInclude HAIKU_TOP src system libroot posix ;

src/system/libroot/posix/sys/uname.c

@@ -12,6 +12,12 @@
 #include <string.h>
 
 
+// Haiku SVN revision. Will be set when copying libroot.so to the image.
+// Lives in a separate section so that it can easily be found.
+extern uint32 _gHaikuRevision __attribute__((section("_haiku_revision")));
+uint32 _gHaikuRevision = 0;
+
+
 int
 uname(struct utsname *info)
 {
@@ -28,13 +34,15 @@ uname(struct utsname *info)
 	strlcpy(info->sysname, "Haiku", sizeof(info->sysname));
 
 	info->version[0] = '\0';
-#ifdef HAIKU_REVISION
-	snprintf(info->version, sizeof(info->version), "r%d ", HAIKU_REVISION);
-#endif
+	if (_gHaikuRevision) {
+		snprintf(info->version, sizeof(info->version), "r%ld ",
+			_gHaikuRevision);
+	}
 	strlcat(info->version, systemInfo.kernel_build_date, sizeof(info->version));
 	strlcat(info->version, " ", sizeof(info->version));
 	strlcat(info->version, systemInfo.kernel_build_time, sizeof(info->version));
-	snprintf(info->release, sizeof(info->release), "%lld", systemInfo.kernel_version);
+	snprintf(info->release, sizeof(info->release), "%lld",
+		systemInfo.kernel_version);
 
 	// TODO: make this better
 	switch (systemInfo.platform_type) {