Fix a build fail on some non-POSIX platforms

Use own scandir function. according to this change,
we don't need -Werror things in configure anymore.

configure.ac

@@ -105,7 +105,6 @@ AM_CONDITIONAL(MS_LIB_AVAILABLE, test x$ms_librarian = xyes)
 
 AC_CHECK_DECL([__SUNPRO_C], [SUNCC="yes"], [SUNCC="no"])
 WARN_CFLAGS=""
-WERROR_CFLAGS="-Werror"
 WARNING_CPP_DIRECTIVE="no"
 if test "x$GCC" = "xyes"; then
 	WARN_CFLAGS="-Wall -Wpointer-arith -Wstrict-prototypes \
@@ -114,8 +113,6 @@ if test "x$GCC" = "xyes"; then
 	WARNING_CPP_DIRECTIVE="yes"
 elif test "x$SUNCC" = "xyes"; then
 	WARN_CFLAGS="-v -fd"
-	WERROR_CFLAGS="-errtags \
-	-errwarn=%all,no%E_OLD_STYLE_FUNC_DEF,no%E_STATEMENT_NOT_REACHED"
 	WARNING_CPP_DIRECTIVE="yes"
 fi
 if test "x$WARNING_CPP_DIRECTIVE" = "xyes"; then
@@ -167,38 +164,6 @@ dnl AC_CHECK_FUNCS doesn't check for header files.
 dnl posix_fadvise() may be not available in older libc.
 AC_CHECK_SYMBOL([posix_fadvise], [fcntl.h], [fc_func_posix_fadvise=1], [fc_func_posix_fadvise=0])
 AC_DEFINE_UNQUOTED([HAVE_POSIX_FADVISE], [$fc_func_posix_fadvise], [Define to 1 if you have the 'posix_fadvise' function.])
-if test "$os_win32" = "no"; then
-	AC_MSG_CHECKING([for scandir])
-	fc_saved_CFLAGS="$CFLAGS"
-	CFLAGS="$CFLAGS $WARN_CFLAGS $WERROR_CFLAGS"
-	AC_TRY_COMPILE([
-		#include <dirent.h>
-		int main(void);
-	], [
-		int (* comp) (const struct dirent **, const struct dirent **) = 0;
-		struct dirent **d;
-		return scandir(".", &d, 0, comp) >= 0;
-	], [
-		AC_MSG_RESULT([yes])
-		AC_DEFINE([HAVE_SCANDIR], [1], [Define to 1 if you have the 'scandir' function.])
-	], [
-		AC_TRY_COMPILE([
-			#include <dirent.h>
-			int main(void);
-		], [
-			int (* comp) (const void *, const void *) = 0;
-			struct dirent **d;
-			return scandir(".", &d, 0, comp) >= 0;
-		], [
-			AC_MSG_RESULT([yes])
-			AC_DEFINE([HAVE_SCANDIR_VOID_P], [1], [Define to 1 if you have the 'scandir' function with int (* compar)(const void *, const void *)])
-		],[
-			AC_MSG_ERROR([
-*** No scandir function available.])
-		])
-	])
-fi
-CFLAGS="$fc_saved_CFLAGS"
 
 #
 if test "x$ac_cv_func_fstatvfs" = "xyes"; then

src/fcstat.c

@@ -42,6 +42,7 @@
 #ifdef HAVE_SYS_MOUNT_H
 #include <sys/mount.h>
 #endif
+#include <errno.h>
 
 #ifdef _WIN32
 #ifdef __GNUC__
@@ -164,21 +165,84 @@ FcDirChecksumScandirFilter(const struct dirent *entry)
 }
 #endif
 
-#ifdef HAVE_SCANDIR
 static int
 FcDirChecksumScandirSorter(const struct dirent **lhs, const struct dirent **rhs)
 {
     return strcmp((*lhs)->d_name, (*rhs)->d_name);
 }
-#elif HAVE_SCANDIR_VOID_P
-static int
-FcDirChecksumScandirSorter(const void *a, const void *b)
-{
-    const struct dirent *lhs = a, *rhs = b;
 
-    return strcmp(lhs->d_name, rhs->d_name);
+static void
+free_dirent (struct dirent **p)
+{
+    struct dirent **x;
+
+    for (x = p; *x != NULL; x++)
+	free (*x);
+
+    free (p);
+}
+
+int
+FcScandir (const char		*dirp,
+	   struct dirent	***namelist,
+	   int (*filter) (const struct dirent *),
+	   int (*compar) (const struct dirent **, const struct dirent **));
+
+int
+FcScandir (const char		*dirp,
+	   struct dirent	***namelist,
+	   int (*filter) (const struct dirent *),
+	   int (*compar) (const struct dirent **, const struct dirent **))
+{
+    DIR *d;
+    struct dirent *dent, *p, **dlist, **dlp;
+    size_t lsize = 128, n = 0;
+
+    d = opendir (dirp);
+    if (!d)
+	return -1;
+
+    dlist = (struct dirent **) malloc (sizeof (struct dirent *) * lsize);
+    if (!dlist)
+    {
+	closedir (d);
+	errno = ENOMEM;
+
+	return -1;
+    }
+    *dlist = NULL;
+    while ((dent = readdir (d)))
+    {
+	if ((filter) (dent))
+	{
+	    p = (struct dirent *) malloc (sizeof (struct dirent));
+	    memcpy (p, dent, sizeof (struct dirent));
+	    if (n >= lsize)
+	    {
+		lsize += 128;
+		dlp = (struct dirent **) realloc (dlist, sizeof (struct dirent *) * lsize);
+		if (!dlp)
+		{
+		    free_dirent (dlist);
+		    closedir (d);
+		    errno = ENOMEM;
+
+		    return -1;
+		}
+		dlist = dlp;
+	    }
+	    dlist[n++] = p;
+	    dlist[n] = NULL;
+	}
+    }
+    closedir (d);
+
+    qsort (dlist, n, sizeof (struct dirent *), (int (*) (const void *, const void *))compar);
+
+    *namelist = dlist;
+
+    return n;
 }
-#endif
 
 static int
 FcDirChecksum (const FcChar8 *dir, time_t *checksum)
@@ -191,7 +255,7 @@ FcDirChecksum (const FcChar8 *dir, time_t *checksum)
 
     Adler32Init (&ctx);
 
-    n = scandir ((const char *)dir, &files,
+    n = FcScandir ((const char *)dir, &files,
 #ifdef HAVE_STRUCT_DIRENT_D_TYPE
 		 &FcDirChecksumScandirFilter,
 #else