OS_ServerFiles=inet_server.cpp
---- Firebird-2.1.3.18185-0/builds/posix/prefix.linux_generic.orig 2007-05-03 13:24:50.000000000 +0200
-+++ Firebird-2.1.3.18185-0/builds/posix/prefix.linux_generic 2010-08-29 10:50:59.358822457 +0200
+--- Firebird-2.5.4.26856-0/builds/posix/prefix.linux_generic.orig 2015-05-29 20:34:21.678974963 +0200
++++ Firebird-2.5.4.26856-0/builds/posix/prefix.linux_generic 2015-05-29 20:50:50.918933450 +0200
@@ -18,10 +18,11 @@
#
# 2 Oct 2002, Nickolay Samofatov - Major cleanup
--COMMON_FLAGS=-DLINUX -pipe -MMD -fPIC -DFB_SEND_FLAGS=MSG_NOSIGNAL
-+COMMON_FLAGS=@CFLAGS@ -DLINUX -pipe -MMD -fPIC -DFB_SEND_FLAGS=MSG_NOSIGNAL
+-COMMON_FLAGS=-DLINUX -pipe -MMD -fPIC -DFB_SEND_FLAGS=MSG_NOSIGNAL -fsigned-char
++COMMON_FLAGS=@CFLAGS@ -DLINUX -pipe -MMD -fPIC -DFB_SEND_FLAGS=MSG_NOSIGNAL -fsigned-char
+OPTIMIZE_FLAGS=
-PROD_FLAGS=-ggdb -O3 -DNDEBUG $(COMMON_FLAGS)