build: look for and use sys/endian.h

Some OSes have sys/endian.h instead of glibc's endian.h.

configure.ac

@@ -288,6 +288,7 @@ AC_CHECK_HEADERS([\
     attr/xattr.h \
     byteswap.h \
     endian.h \
+    sys/endian.h \
     errno.h \
     linux/fs.h \
     linux/raid/md_u.h \

daemon/journal.c

@@ -22,7 +22,12 @@
 #include <stdlib.h>
 #include <inttypes.h>
 #include <string.h>
+#ifdef HAVE_ENDIAN_H
 #include <endian.h>
+#endif
+#ifdef HAVE_SYS_ENDIAN_H
+#include <sys/endian.h>
+#endif
 
 #include "guestfs_protocol.h"
 #include "daemon.h"

src/inspect-apps.c

@@ -31,6 +31,9 @@
 #ifdef HAVE_ENDIAN_H
 #include <endian.h>
 #endif
+#ifdef HAVE_SYS_ENDIAN_H
+#include <sys/endian.h>
+#endif
 
 /* be32toh is usually a macro definend in <endian.h>, but it might be
  * a function in some system so check both, and if neither is defined

src/inspect-fs-windows.c

@@ -32,6 +32,9 @@
 #ifdef HAVE_ENDIAN_H
 #include <endian.h>
 #endif
+#ifdef HAVE_SYS_ENDIAN_H
+#include <sys/endian.h>
+#endif
 
 #include <pcre.h>
 

src/journal.c

@@ -31,6 +31,9 @@
 #ifdef HAVE_ENDIAN_H
 #include <endian.h>
 #endif
+#ifdef HAVE_SYS_ENDIAN_H
+#include <sys/endian.h>
+#endif
 
 #include "full-read.h"