defer setting largefile flags to build makery
in a cross build we can not do runtime config tests

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Upstream-Status: Inappropriate[Cross compile Specific]
Index: dosfstools-3.0.28/Makefile
===================================================================
--- dosfstools-3.0.28.orig/Makefile
+++ dosfstools-3.0.28/Makefile
@@ -27,8 +27,7 @@ SBINDIR = $(PREFIX)/sbin
 DOCDIR = $(PREFIX)/share/doc
 MANDIR = $(PREFIX)/share/man
 
-#OPTFLAGS = -O2 -fomit-frame-pointer -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64
-OPTFLAGS = -O2 -fomit-frame-pointer -D_GNU_SOURCE $(shell getconf LFS_CFLAGS)
+OPTFLAGS = -O2 -fomit-frame-pointer
 #WARNFLAGS = -Wall -pedantic -std=c99
 WARNFLAGS = -Wall -Wextra -Wno-sign-compare -Wno-missing-field-initializers -Wmissing-prototypes -Wstrict-prototypes -Wwrite-strings
 DEBUGFLAGS = -g