Improvement: always export both 16-bit and 32-bit UTF function

1 files changed, 39 insertions, 0 deletions

diff --git a/unix/configure b/unix/configure
index 2de5b54..a35cde4 100755
--- a/unix/configure
+++ b/unix/configure
@@ -3930,6 +3930,45 @@ done
 
 
 #------------------------------------------------------------------------
+# If we're using GCC, see if the compiler understands -fshort-wchar.  If so, use it.
+# It makes sure you can use the wchar_t type interchangable with Tcl_UniChar
+#------------------------------------------------------------------------
+
+if test -z "$no_short_wchar" && test -n "$GCC"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking if the compiler understands -fshort-wchar" >&5
+$as_echo_n "checking if the compiler understands -fshort-wchar... " >&6; }
+if ${tcl_cv_cc_short_wchar+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+	hold_cflags=$CFLAGS; CFLAGS="$CFLAGS -fshort-wchar"
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  tcl_cv_cc_short_wchar=yes
+else
+  tcl_cv_cc_short_wchar=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+	CFLAGS=$hold_cflags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $tcl_cv_cc_short_wchar" >&5
+$as_echo "$tcl_cv_cc_short_wchar" >&6; }
+    if test $tcl_cv_cc_short_wchar = yes; then
+	CFLAGS="$CFLAGS -fshort-wchar"
+    fi
+fi
+
+#------------------------------------------------------------------------
 # If we're using GCC, see if the compiler understands -pipe.  If so, use it.
 # It makes compiling go faster.  (This is only a performance feature.)
 #------------------------------------------------------------------------