Change in coreboot[master]: util/ifdtool/Makefile: Fix building as standalone tool

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/59663 )

Change subject: util/ifdtool/Makefile: Fix building as standalone tool
......................................................................

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 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59663
Reviewed-by: Patrick Georgi 
Reviewed-by: Felix Held 
Reviewed-by: Paul Menzel 
Reviewed-by: Krystian Hebel 
Tested-by: build bot (Jenkins) 
---
M util/ifdtool/Makefile
1 file changed, 1 insertion(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Patrick Georgi: Looks good to me, approved
  Paul Menzel: Looks good to me, but someone else must approve
  Felix Held: Looks good to me, approved
  Krystian Hebel: Looks good to me, but someone else must approve

diff --git a/util/ifdtool/Makefile b/util/ifdtool/Makefile
index e8d818c..473dc08 100644
--- a/util/ifdtool/Makefile
+++ b/util/ifdtool/Makefile
@@ -11,6 +11,7 @@
 CFLAGS += -I../../src/commonlib/include -I../../src/commonlib/bsd/include
 CFLAGS += -I../cbfstool/flashmap
 CFLAGS += -include ../../src/commonlib/bsd/include/commonlib/bsd/compiler.h
+CFLAGS += -D_DEFAULT_SOURCE # for endianness converting functions
 LDFLAGS =

OBJS = ifdtool.o