2006-06-14 Yoshinori K. Okuji <okuji@enbug.org>

* util/misc.c: Include config.h.
        [!HAVE_MEMALIGN]: Do not include malloc.h.
        (grub_memalign): Use posix_memalign, if present. Then, use
        memalign, if present. Otherwise, emit an error.

        * util/grub-emu.c: Do not include malloc.h.

        * include/grub/util/misc.h: Include unistd.h. This is required for
        FreeBSD, because off_t is defined in unistd.h. Reported by Harley
        D. Eades III <hde@foobar-qux.org>.

        * configure.ac (AC_GNU_SOURCE): Added.
        (AC_CHECK_FUNCS): Check posix_memalign and memalign for the host
        type.

config.h.in

@@ -31,6 +31,9 @@
 /* Define to 1 if you have the <lzo/lzo1x.h> header file. */
 #undef HAVE_LZO_LZO1X_H
 
+/* Define to 1 if you have the `memalign' function. */
+#undef HAVE_MEMALIGN
+
 /* Define to 1 if you have the <memory.h> header file. */
 #undef HAVE_MEMORY_H
 
@@ -40,6 +43,9 @@
 /* Define to 1 if you have the <ncurses.h> header file. */
 #undef HAVE_NCURSES_H
 
+/* Define to 1 if you have the `posix_memalign' function. */
+#undef HAVE_POSIX_MEMALIGN
+
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
@@ -101,5 +107,10 @@
 /* Number of bits in a file offset, on hosts where this is settable. */
 #undef _FILE_OFFSET_BITS
 
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+
 /* Define for large files, on AIX-style hosts. */
 #undef _LARGE_FILES