Include CheckSymbolExists CMake module

[nominatim.git] / nominatim / postgresql.h

diff --git a/nominatim/postgresql.h b/nominatim/postgresql.h
index 6a14e94e6ea56d33e2fd038979b677b0be601e04..f30e7308113b09cd85b5d9752849f829c687749e 100644 (file)
--- a/nominatim/postgresql.h
+++ b/nominatim/postgresql.h
@@ -7,16 +7,32 @@
 #define PG_OID_INT8                    20
 #define PG_OID_INT4                    23
 
+#if HAVE_BYTESWAP
 #include <byteswap.h>
+#define PG_BSWAP32(x) bswap_32(x)
+#define PG_BSWAP64(x) bswap_64(x)
+#elif HAVE_SYS_ENDIAN
+#include <sys/endian.h>
+#define PG_BSWAP32(x) bswap32(x)
+#define PG_BSWAP64(x) bswap64(x)
+#else
+#error "No appropriate byteswap found for your system."
+#endif
 
-#if __BYTE_ORDER == __BIG_ENDIAN
-#define PGint16(x)     (x)
+#if defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
+#define PGint32(x)     (x)
+#define PGint64(x)     (x)
+#elif defined(__BYTE_ORDER__) &&  (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+#define PGint32(x)     PG_BSWAP32(x)
+#define PGint64(x)     PG_BSWAP64(x)
+#elif defined(_BYTE_ORDER) && (_BYTE_ORDER == _BIG_ENDIAN)
 #define PGint32(x)     (x)
 #define PGint64(x)     (x)
+#elif defined(_BYTE_ORDER) &&  (_BYTE_ORDER == _LITTLE_ENDIAN)
+#define PGint32(x)     PG_BSWAP32(x)
+#define PGint64(x)     PG_BSWAP64(x)
 #else
-#define PGint16(x)     __bswap_16 (x)
-#define PGint32(x)     __bswap_32 (x)
-#define PGint64(x)     __bswap_64 (x)
+#error "Cannot determine byte order."
 #endif
 
 const char *build_conninfo(const char *db, const char *username, const char *password, const char *host, const char *port);