add autoconf magic to support old systems that don't support multibyte charsets

[mmh] / configure.in

diff --git a/configure.in b/configure.in
index e52c5e6..525ba8c 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -448,9 +448,9 @@ AC_HEADER_SYS_WAIT
 AC_HEADER_STAT
 AC_CHECK_HEADERS(string.h memory.h stdlib.h unistd.h errno.h fcntl.h \
                  limits.h crypt.h termcap.h termio.h termios.h locale.h \
-                 langinfo.h netdb.h sys/param.h sys/time.h sys/utsname.h \
-                 iconv.h sys/stream.h arpa/inet.h arpa/ftp.h)
-
+                 langinfo.h wchar.h wctype.h iconv.h netdb.h \
+                 sys/param.h sys/time.h sys/utsname.h sys/stream.h \
+                 arpa/inet.h arpa/ftp.h)
 
 AC_CACHE_CHECK(POSIX termios, nmh_cv_sys_posix_termios,
 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
@@ -505,7 +505,7 @@ AC_FUNC_VFORK
 AC_CHECK_LIB(mkstemp,mkstemp)
 AC_CHECK_FUNCS(waitpid wait3 sigaction sigprocmask sigblock sigsetmask \
                sighold sigrelse writev lstat uname tzset killpg mkstemp \
-               sethostent getutent nl_langinfo)
+               sethostent getutent nl_langinfo mbtowc wcwidth)
 
 dnl solaris screws this up
 AC_CHECK_FUNC(gethostbyname, [AC_DEFINE(HAVE_GETHOSTBYNAME)],
@@ -539,6 +539,13 @@ dnl preprocessor to preprocess stdio.h and make sure that there's actually a
 dnl prototype. 
 AC_EGREP_HEADER(snprintf, stdio.h, AC_DEFINE(HAVE_SNPRINTF_PROTOTYPE))
 
+dnl Check for multibyte character set support
+if test "x$ac_cv_header_wchar_h" = "xyes" -a "x$ac_cv_header_wctype_h" = "xyes" \
+    -a "x$ac_cv_func_wcwidth" = "xyes" -a "x$ac_cv_func_mbtowc" = "xyes"; then
+  AC_DEFINE(MULTIBYTE_SUPPORT, 1,
+    [Define to enable support for multibyte character sets])
+fi
+
 dnl -------------------
 dnl CHECK FOR LIBRARIES
 dnl -------------------