See http://gcc.gnu.org/PR3106 Backported from gcc-3.0.x Fixes error .../binutils-2.11.2/libiberty/strerror.c:468: error: conflicting types for `sys_nerr' /usr/include/stdio.h:258: error: previous declaration of `sys_nerr' make[1]: *** [strerror.o] Error 1 make: *** [all-libiberty] Error 2 on Mac OS X. --- binutils-2.11.2/libiberty/strerror.c.old 2004-03-24 16:23:19.000000000 -0800 +++ binutils-2.11.2/libiberty/strerror.c 2004-03-24 16:23:48.000000000 -0800 @@ -13,6 +13,7 @@ incompatible with our later declaration, perhaps by using const attributes. So we hide the declaration in errno.h (if any) using a macro. */ +#define sys_nerr sys_nerr__ #define sys_errlist sys_errlist__ #endif @@ -20,6 +21,7 @@ #include #ifdef HAVE_SYS_ERRLIST +#undef sys_nerr #undef sys_errlist #endif