From: Natanael Copa <ncopa@alpinelinux.org>
Date: Tue, 4 Mar 2014 12:32:34 +0000 (+0000)
Subject: build: detect wordsize in a portable way
X-Git-Tag: v4.1~2256^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=edf9edf5a14ae282b8ef1fff514347964714431a;p=thirdparty%2Ftvheadend.git

build: detect wordsize in a portable way

There are no standard that says that __WORDSIZE should be defined or
in what include file. So in case its not defined we fallback to a
POSIX compliant way to determine wordsize.

This fixes build with 64 bit musl libc.

See https://tvheadend.org/issues/1983
---

diff --git a/src/tvheadend.h b/src/tvheadend.h
index 218ac5db7..a52185100 100644
--- a/src/tvheadend.h
+++ b/src/tvheadend.h
@@ -31,6 +31,7 @@
 #include <string.h>
 #include <assert.h>
 #include <unistd.h>
+#include <limits.h>
 #if ENABLE_LOCKOWNER
 #include <sys/syscall.h>
 #endif
@@ -611,6 +612,14 @@ qsort_r(void *base, size_t nmemb, size_t size,
 #endif /* ENABLE_QSORT_R */
 
 /* printing */
+#ifndef __WORDSIZE
+# if ULONG_MAX == 0xffffffffffffffff
+#  define __WORDSIZE 64
+# elif ULONG_MAX == 0xffffffff
+#  define __WORDSIZE 32
+# endif /* ULONG_MAX */
+#endif /* __WORDSIZE */
+
 # if __WORDSIZE == 64
 #define PRIsword_t      PRId64
 #define PRIuword_t      PRIu64