X-Git-Url: https://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=test%2Faclocal.m4;h=1d2d925bc6df4a71b8377f56d9b7ac078c294f30;hb=ee8861cb4901d33fef9ad228b55a60ca4950e79c;hp=90903f5d6db0e6c931a28652c8d83518d9664e5b;hpb=5079dc1dbbaa5128ac761358dcf81c8b606983c4;p=ncurses.git

diff --git a/test/aclocal.m4 b/test/aclocal.m4
index 90903f5d..1d2d925b 100644
--- a/test/aclocal.m4
+++ b/test/aclocal.m4
@@ -27,7 +27,7 @@ dnl sale, use or other dealings in this Software without prior written       *
 dnl authorization.                                                           *
 dnl***************************************************************************
 dnl
-dnl $Id: aclocal.m4,v 1.183 2020/09/26 22:13:19 tom Exp $
+dnl $Id: aclocal.m4,v 1.185 2020/11/14 15:26:19 tom Exp $
 dnl
 dnl Author: Thomas E. Dickey
 dnl
@@ -568,7 +568,7 @@ if test "$cf_have_curses_lib" = no; then
 fi
 ])dnl
 dnl ---------------------------------------------------------------------------
-dnl CF_CLANG_COMPILER version: 3 updated: 2020/08/28 04:10:22
+dnl CF_CLANG_COMPILER version: 4 updated: 2020/10/31 15:46:50
 dnl -----------------
 dnl Check if the given compiler is really clang.  clang's C driver defines
 dnl __GNUC__ (fooling the configure script into setting $GCC to yes) but does
@@ -587,21 +587,34 @@ ifelse([$2],,CLANG_COMPILER,[$2])=no
 if test "$ifelse([$1],,[$1],GCC)" = yes ; then
 	AC_MSG_CHECKING(if this is really Clang ifelse([$1],GXX,C++,C) compiler)
 	cf_save_CFLAGS="$ifelse([$3],,CFLAGS,[$3])"
-	ifelse([$3],,CFLAGS,[$3])="$ifelse([$3],,CFLAGS,[$3]) -Qunused-arguments"
 	AC_TRY_COMPILE([],[
 #ifdef __clang__
 #else
 make an error
 #endif
 ],[ifelse([$2],,CLANG_COMPILER,[$2])=yes
-cf_save_CFLAGS="$cf_save_CFLAGS -Qunused-arguments"
 ],[])
 	ifelse([$3],,CFLAGS,[$3])="$cf_save_CFLAGS"
 	AC_MSG_RESULT($ifelse([$2],,CLANG_COMPILER,[$2]))
 fi
 
-if test "x$CLANG_COMPILER" = "xyes" ; then
-	CF_APPEND_TEXT(CFLAGS,-Wno-error=implicit-function-declaration)
+if test "x$ifelse([$2],,CLANG_COMPILER,[$2])" = "xyes" ; then
+	for cf_clang_opt in \
+		-Qunused-arguments \
+		-Wno-error=implicit-function-declaration
+	do
+		AC_MSG_CHECKING(if option $cf_clang_opt works)
+		AC_TRY_LINK([
+			#include <stdio.h>],[
+			printf("hello!\n");],[
+			cf_clang_optok=yes],[
+			cf_clang_optok=no])
+		AC_MSG_RESULT($cf_clang_optok)
+		if test $cf_clang_optok = yes; then
+			CF_VERBOSE(adding option $cf_clang_opt)
+			CF_APPEND_TEXT(CFLAGS,$cf_clang_opt)
+		fi
+	done
 fi
 ])
 dnl ---------------------------------------------------------------------------
@@ -2326,7 +2339,7 @@ ifelse($1,,[
 fi
 ])
 dnl ---------------------------------------------------------------------------
-dnl CF_MIXEDCASE_FILENAMES version: 7 updated: 2015/04/12 15:39:00
+dnl CF_MIXEDCASE_FILENAMES version: 8 updated: 2020/11/14 10:12:15
 dnl ----------------------
 dnl Check if the file-system supports mixed-case filenames.  If we're able to
 dnl create a lowercase name and see it as uppercase, it doesn't support that.
@@ -2335,7 +2348,7 @@ AC_DEFUN([CF_MIXEDCASE_FILENAMES],
 AC_CACHE_CHECK(if filesystem supports mixed-case filenames,cf_cv_mixedcase,[
 if test "$cross_compiling" = yes ; then
 	case $target_alias in
-	(*-os2-emx*|*-msdosdjgpp*|*-cygwin*|*-msys*|*-mingw*|*-uwin*)
+	(*-os2-emx*|*-msdosdjgpp*|*-cygwin*|*-msys*|*-mingw*|*-uwin*|darwin*)
 		cf_cv_mixedcase=no
 		;;
 	(*)