Hi, We are building MariaDB on AIX. The test: main.mysql_client_test fails (after time-out). This is due to little endian code being used though HAVE_BIGENDIAN is correctly set. This is due to: libmariadb/libmariadb/ma_dtoa.c : #if defined(WORDS_BIGENDIAN) || (defined(__FLOAT_WORD_ORDER) && \ (__FLOAT_WORD_ORDER == __BIG_ENDIAN)) #define word0(x) (x)->L[0] #define word1(x) (x)->L[1] #else #define word0(x) (x)->L[1] #define word1(x) (x)->L[0] #endif which results in the #else part (Little Endian) since none of the tested macros are defined. File libmariadb/libmariadb/ma_dtoa.c includes ma_global.h which has: #define HAVE_BIGENDIAN 1 but nothing defined about WORDS_BIGENDIAN . However, probably that some changes were made in the past in ma_global.h, since I see: #ifdef HAVE_BIGENDIAN #endif /* WORDS_BIGENDIAN */ 2 times in this file. I do not master MariaDB, so I do not have a clear idea about how to fix this. I see 3 solutions: a) libmariadb/CMakeLists.txt : Add: SET(HAVE_WORDS_BIGENDIAN TRUE ...) after : TEST_BIG_ENDIAN(HAVE_BIGENDIAN) if it is BigEndian. b) libmariadb/include/ma_global.h : Add: #ifdef HAVE_BIGENDIAN #define WORDS_BIGENDIAN 1 #endif c) libmariadb/libmariadb/ma_dtoa.c : Change: #if defined(WORDS_BIGENDIAN) || (defined(__FLOAT_WORD_ORDER) && \ (__FLOAT_WORD_ORDER == __BIG_ENDIAN)) by: #if defined(HAVE_BIGENDIAN) || defined(WORDS_BIGENDIAN) || (defined(__FLOAT_WORD_ORDER) && \ (__FLOAT_WORD_ORDER == __BIG_ENDIAN)) Please let me know which seems appropriate. Regards, Tony ATOS / Bull SAS ATOS Expert IBM Coop Architect & Technical Leader Office : +33 (0) 4 76 29 72 67 1 rue de Provence - 38432 Échirolles - France www.atos.nethttps://mail.ad.bull.net/owa/redir.aspx?C=PvphmPvCZkGrAgHVnWGsdMcDKgzl_dEIsM6rX0g4u4v8V81YffzBGkWrtQeAXNovd3ttkJL8JIc.&URL=http%3a%2f%2fwww.atos.net%2f