From 5aeb25abf13de43b9e497f6509209911dd1386b8 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Date: Sun, 26 Apr 2020 15:33:39 +0200
Subject: [PATCH] Use LONG_BIT to define RADIX_BITS

This allows to avoid having to support each CPU architecture
individually.

Also, add the necessary defines in the makefile to expose
LONG_BIT. Adding those defines end up requiring using <sys/select.h>
as we're now using >= POSIX.1-2001 definitions of fd_set and friends.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Vincent Fazio <vfazio@gmail.com>
---
 src/LibSupport.h     | 17 +++--------------
 src/TcpServerPosix.c |  1 +
 src/makefile         |  2 ++
 3 files changed, 6 insertions(+), 14 deletions(-)

diff --git a/src/LibSupport.h b/src/LibSupport.h
index b2e6a51..0b59d18 100644
--- a/src/LibSupport.h
+++ b/src/LibSupport.h
@@ -64,20 +64,9 @@
 #ifndef _LIB_SUPPORT_H_
 #define _LIB_SUPPORT_H_
 
-#ifndef RADIX_BITS
-#   if defined(__x86_64__) || defined(__x86_64)				\
-    || defined(__amd64__) || defined(__amd64) || defined(_WIN64) || defined(_M_X64) \
-    || defined(_M_ARM64) || defined(__aarch64__) \
-    || defined(__powerpc64__) || defined(__ppc64__)
-#       define RADIX_BITS                      64
-#   elif defined(__i386__) || defined(__i386) || defined(i386)		\
-    || defined(_WIN32) || defined(_M_IX86)				\
-    || defined(_M_ARM) || defined(__arm__) || defined(__thumb__)
-#       define RADIX_BITS                      32
-#   else
-#       error Unable to determine RADIX_BITS from compiler environment
-#   endif
-#endif // RADIX_BITS
+#include <limits.h>
+
+#define RADIX_BITS LONG_BIT
 
 // These macros use the selected libraries to the proper include files.
 #define LIB_QUOTE(_STRING_) #_STRING_
diff --git a/src/TcpServerPosix.c b/src/TcpServerPosix.c
index 20fcb29..bdac7aa 100644
--- a/src/TcpServerPosix.c
+++ b/src/TcpServerPosix.c
@@ -66,6 +66,7 @@
 
 #include <stdio.h>
 /* FIXME need Posix TCP socket code */
+#include <sys/select.h>
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/socket.h>
diff --git a/src/makefile b/src/makefile
index f124e78..6ee128e 100644
--- a/src/makefile
+++ b/src/makefile
@@ -46,6 +46,8 @@ CCFLAGS = -Wall  			\
 	 -c -ggdb -O0 			\
 	-DTPM_POSIX			\
 	-D_POSIX_			\
+	-D_DEFAULT_SOURCE		\
+	-D_XOPEN_SOURCE=500		\
 	-DTPM_NUVOTON
 
 # add this line for big endian platforms
-- 
2.26.2