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[Listener] Test the platform for endian.h 

The <endian.h> header is Glibc-specific. On BSD platforms, one have to
use <sys/endian.h>.
(This was the occasion to improve the preprocessor code here.)
This commit is contained in:
Matteo Cypriani 2011-06-24 16:53:46 +02:00
parent 5f72702b88
commit 306e855ad1
1 changed files with 20 additions and 14 deletions
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34
owlps-listener/owlps-listener.h
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@ -19,20 +19,22 @@
#include <pcap.h>
#include <endian.h>
#include <sys/param.h>
#ifdef __GLIBC__
# include <endian.h>
/* <endian.h> defines le*toh only in glibc >= 2.9. If we use an older
* version of glibc, or another libc (e.g. uClibc), we must define them
* manually.
* version of glibc, or another glibc-friendly libc (e.g. uClibc), we
* must define them manually.
*/
#if __BYTE_ORDER == __LITTLE_ENDIAN
# ifndef le32toh
# define le32toh(x) (x)
# endif // le32toh
# ifndef le16toh
# define le16toh(x) (x)
# endif // le16toh
#else // __BYTE_ORDER == __LITTLE_ENDIAN
# if __BYTE_ORDER == __BIG_ENDIAN
# if __BYTE_ORDER == __LITTLE_ENDIAN
# ifndef le32toh
# define le32toh(x) (x)
# endif // le32toh
# ifndef le16toh
# define le16toh(x) (x)
# endif // le16toh
# elif __BYTE_ORDER == __BIG_ENDIAN
# ifndef le32toh
# include <byteswap.h>
# define le32toh(x) bswap_32(x)
@ -41,8 +43,12 @@
# include <byteswap.h>
# define le16toh(x) bswap_16(x)
# endif // le16toh
# endif // __BYTE_ORDER == __BIG_ENDIAN
#endif // __BYTE_ORDER == __LITTLE_ENDIAN
# else // __BYTE_ORDER
# error "This program does not handle strange architectures."
# endif // __BYTE_ORDER
#else // __GLIBC__
# include <sys/endian.h>
#endif // __GLIBC__
/* Arguments & program configuration */