hi, I updated the newest guile-src from git://git.sv.gnu.org/guile, but while I compile it , it showed error msg below: =============================== In file included from ../libguile/_scm.h:78, from alist.c:25: ../libguile/numbers.h:394:2: error: #error sizeof(char) is not 1. ../libguile/numbers.h:415:2: error: #error sizeof(short) is not 1, 2, or 4. ../libguile/numbers.h:432:2: error: #error sizeof(int) is not 4 or 8. ../libguile/numbers.h:448:2: error: #error sizeof(long) is not 4 or 8. ../libguile/numbers.h:464:2: error: #error sizeof(scm_t_intmax) is not 4 or 8. ../libguile/numbers.h:492:2: error: #error sizeof(size_t) is not 4 or 8. make[2]: *** [alist.x] Error 1 make[2]: Leaving directory `/home/nalaginrut/project/guile/libguile' make[1]: *** [all-recursive] Error 1 =============================== What's wrong with it? BTW, I try to find the definition of SCM_SIZE_XXX , but there is no any definition about that. And I think the configure must do this kind of check, so I checked "config.h" and find similar definition: #define SIZEOF_UNSIGNED_CHAR 1 #define SIZEOF_UNSIGNED_INT 4 #define SIZEOF_UNSIGNED_LONG 4 ...... Is there any typo? Or I should change my compiler version? I've tried gcc4.1~4.4, but no effect.