util/ifdtool/Makefile: Fix building as standalone tool

Commit f1e401c6cb70 (util/cbfstool/flashmap/fmap.c: fix fmaptool
endianness bugs on BE) makes use of endianness conversion macros
in cbfstool's FMAP code, which is also used by ifdtool. At least
on Linux, the <endian.h> header provides these helpers, but only
when `__USE_MISC` is defined, which is defined in the <ctypes.h>
header when `_DEFAULT_SOURCE` is defined. This was accounted for
in `Makefile.inc`, but not in `Makefile`. As a result, trying to
build ifdtool as a standalone tool (i.e. not as part of building
a coreboot image) results in build errors because the endianness
conversion macros are not defined.

Define `_DEFAULT_SOURCE` in `Makefile` to fix the build errors.

Change-Id: I8c2bbc07ddd87d885e2d6f5c7f2bd501e5c4e3b0
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59663
Reviewed-by: Patrick Georgi <patrick@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions