bsdiff: force off_t to be 64 bits, honor size_t length

dev-util/bsdiff/bsdiff-4.3-r1.ebuild

Index: dev-util/bsdiff/bsdiff-4.3-r1.ebuild
diff --git a/dev-util/bsdiff/bsdiff-4.3-r1.ebuild b/dev-util/bsdiff/bsdiff-4.3-r1.ebuild
index a58d62416de5f5ba7e414801f51c3b064333d08b..16242737f8744a68961181e32ac186fd3a461624 100644
--- a/dev-util/bsdiff/bsdiff-4.3-r1.ebuild
+++ b/dev-util/bsdiff/bsdiff-4.3-r1.ebuild
@@ -24,8 +24,8 @@ src_prepare() {
 
 src_compile() {
 	append-lfs-flags
-	$(tc-getCC) ${CFLAGS} ${LDFLAGS} -o bsdiff bsdiff.c -lbz2 || die "failed compiling bsdiff"
-	$(tc-getCC) ${CFLAGS} ${LDFLAGS} -o bspatch bspatch.c -lbz2 || die "failed compiling bspatch"
+	$(tc-getCC) ${CFLAGS} -D_FILE_OFFSET_BITS=64 ${LDFLAGS} -o bsdiff bsdiff.c -lbz2 || die "failed compiling bsdiff"
+	$(tc-getCC) ${CFLAGS} -D_FILE_OFFSET_BITS=64 ${LDFLAGS} -o bspatch bspatch.c -lbz2 || die "failed compiling bspatch"
 }
 
 src_install() {