Lighttpd

In lighttpd's case, I'd be fine with removing DATE and TIME from server.c, where this info is used only for display when showing version (lighttpd -v) or showing help (lighttpd -h) For most people, installing the package would already have package build info in package database. For those building from source, the timestamps on the lighttpd executable would probably suffice for "when was this built?" as long as timestamp was preserved when installed out of the build area.

FYI: I wrote a multi-platform set of macros that stores ident information in the .comment section of the binary, instead of in .data.
https://github.com/gstrauss/plasma/blob/master/plasma_ident.h
This separate section could be separated from the binary after the build and stored separately in a database, keyed by a checksum of the binary after the .comment section has been removed.

--- a/src/server.c
+++ b/src/server.c
@@ -538,8 +538,10 @@ static int server_oneshot_init(server *srv, int fd) {

 static void show_version (void) {
        char *b = PACKAGE_DESC TEXT_SSL \
-" - a light and fast webserver\n" \
+" - a light and fast webserver\n" 
+#ifdef NONREPRODUCIBLE_BUILD
 "Build-Date: " __DATE__ " " __TIME__ "\n";
+#endif
 ;
        write_all(STDOUT_FILENO, b, strlen(b));
 }
@@ -705,7 +707,10 @@ static void show_features (void) {
 }

 static void show_help (void) {
-       char *b = PACKAGE_DESC TEXT_SSL " ("__DATE__ " " __TIME__ ")" \
+       char *b = PACKAGE_DESC TEXT_SSL
+#ifdef NONREPRODUCIBLE_BUILD
+" ("__DATE__ " " __TIME__ ")" 
+#endif
 " - a light and fast webserver\n" \
 "usage:\n" \
 " -f <name>  filename of the config-file\n" \