Add check for swprintf() and a workaround when it is missing

We use this function once in our codebase, but fortunately the workaround is
relatively easy. swprintf() is not available on Cygwin so the compile failed
there, but we can do a series of mbstowcs() calls that produce the same end
result as the swprintf() call.

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/configure.ac b/configure.ac
index 6916329f..c695c57f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -161,8 +161,8 @@ AC_FUNC_FORK
 AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
 AC_FUNC_MKTIME
 AC_TYPE_SIGNAL
-AC_CHECK_FUNCS([realpath regcomp strcasecmp strdup strerror strnlen \
-								strndup strrchr strsep strstr strverscmp uname geteuid])
+AC_CHECK_FUNCS([geteuid realpath regcomp strcasecmp strdup strerror \
+								strndup strrchr strsep strstr strverscmp swprintf uname])
 
 # Enable large file support if available
 AC_SYS_LARGEFILE