From 39184cab6a7f2477f120db7eef1962edb5a7d152 Mon Sep 17 00:00:00 2001
From: "Steven R. Loomis" <srl@icu-project.org>
Date: Mon, 26 Aug 2013 20:45:20 +0000
Subject: [PATCH] ICU-9675 add -Qunused-arguments if compiler is clang

X-SVN-Rev: 34088
---
 icu4c/source/configure    | 17 +++++++++++++----
 icu4c/source/configure.in | 16 ++++++++++++++--
 2 files changed, 27 insertions(+), 6 deletions(-)

diff --git a/icu4c/source/configure b/icu4c/source/configure
index bc314a714f4..a6602de9cc8 100755
--- a/icu4c/source/configure
+++ b/icu4c/source/configure
@@ -7383,12 +7383,21 @@ fi
 # Now that we're done using CPPFLAGS etc. for tests, we can change it
 # for build.
 
-CPPFLAGS="$CPPFLAGS \$(THREADSCPPFLAGS)"
-CFLAGS="$CFLAGS \$(THREADSCFLAGS)"
-CXXFLAGS="$CXXFLAGS \$(THREADSCXXFLAGS)"
-
+if test "${CC}" == "clang"; then
+   CLANGCFLAGS="-Qunused-arguments"
+else
+   CLANGCFLAGS=""
+fi
 
+if test "${CXX}" == "clang++"; then
+   CLANGCXXFLAGS="-Qunused-arguments"
+else
+   CLANGCXXFLAGS=""
+fi
 
+CPPFLAGS="$CPPFLAGS \$(THREADSCPPFLAGS)"
+CFLAGS="$CFLAGS \$(THREADSCFLAGS) $CLANGCFLAGS"
+CXXFLAGS="$CXXFLAGS \$(THREADSCXXFLAGS) $CLANGCXXFLAGS"
 
 # append all config cppflags
 CPPFLAGS="$CPPFLAGS $CONFIG_CPPFLAGS $UCONFIG_CPPFLAGS"
diff --git a/icu4c/source/configure.in b/icu4c/source/configure.in
index 9842f7ff005..82c2eb7c199 100644
--- a/icu4c/source/configure.in
+++ b/icu4c/source/configure.in
@@ -1224,9 +1224,21 @@ fi
 # Now that we're done using CPPFLAGS etc. for tests, we can change it
 # for build.
 
+if test "${CC}" == "clang"; then
+   CLANGCFLAGS="-Qunused-arguments"
+else
+   CLANGCFLAGS=""
+fi
+
+if test "${CXX}" == "clang++"; then
+   CLANGCXXFLAGS="-Qunused-arguments"
+else
+   CLANGCXXFLAGS=""
+fi
+
 CPPFLAGS="$CPPFLAGS \$(THREADSCPPFLAGS)"
-CFLAGS="$CFLAGS \$(THREADSCFLAGS)"
-CXXFLAGS="$CXXFLAGS \$(THREADSCXXFLAGS)"
+CFLAGS="$CFLAGS \$(THREADSCFLAGS) $CLANGCFLAGS"
+CXXFLAGS="$CXXFLAGS \$(THREADSCXXFLAGS) $CLANGCXXFLAGS"
 
 AC_SUBST(LIBCFLAGS)
 AC_SUBST(LIBCXXFLAGS)
-- 
2.40.0