Makefile: back-port _FILE_OFFSET_BITS=64 and _LARGEFILE64_SOURCE to M…

…akefile

Upstream commit 71dd77fd4bf7 ("libbpf: use LFS (_FILE_OFFSET_BITS) instead
of direct mmap2 syscall") added _FILE_OFFSET_BITS=64 and
_LARGEFILE64_SOURCE CFLAGS. Back-port them to Github's mirror to avoid
compilation problems on ARM.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>

src/Makefile

@@ -18,7 +18,7 @@ endif
 SHARED_CFLAGS += -fPIC -fvisibility=hidden -DSHARED
 
 CFLAGS ?= -g -O2 -Werror -Wall
-ALL_CFLAGS += $(CFLAGS)
+ALL_CFLAGS += $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
 ALL_LDFLAGS += $(LDFLAGS)
 ifdef NO_PKG_CONFIG
 	ALL_LDFLAGS += -lelf