From: Florian Krohm <florian@eich-krohm.de>
Date: Fri, 4 Oct 2013 21:12:17 +0000 (+0000)
Subject: Adjust CFLAGS and CXXFLAGS for compilation with clang. The current
X-Git-Tag: svn/VALGRIND_3_9_0~72
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4f1758438ba1b0c448ab72bfd3f7d1081ec027ff;p=thirdparty%2Fvalgrind.git

Adjust CFLAGS and CXXFLAGS for compilation with clang. The current
setting suppresses almost all warnings originating in source code
constructs. It does ot yet suppress warnings from unrecognised command
line flags as they may be the reason for regression test failures
which have not yet been investigated.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13619
---

diff --git a/Makefile.tool-tests.am b/Makefile.tool-tests.am
index c8fd434fca..299ba7b381 100644
--- a/Makefile.tool-tests.am
+++ b/Makefile.tool-tests.am
@@ -31,6 +31,13 @@ if HAS_WRITE_STRINGS_WARNING
 CFLAGS += -Wno-write-strings
 endif
 
+if COMPILER_IS_CLANG
+CFLAGS   += -Wno-format-extra-args       # perf/tinycc.c
+CFLAGS   += -Wno-literal-range           # none/tests/amd64/fxtract.c
+CFLAGS   += -Wno-string-plus-int         # drd/tests/annotate_ignore_rw.c
+CXXFLAGS += -Wno-unused-private-field    # drd/tests/tsan_unittest.cpp
+endif
+
 check-local: build-noinst_DSYMS
 
 clean-local: clean-noinst_DSYMS
diff --git a/configure.ac b/configure.ac
index 6fc3f1d4f6..42f2ac5ce6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -119,6 +119,8 @@ if test "x`${CC} --version | $SED -n -e 's/.*\(clang\) version.*/\1/p'`" = "xcla
     is_clang="clang"
     # Don't use -dumpversion with clang: it will always produce "4.2.1".
     gcc_version=`${CC} --version | $SED -n -e 's/.*clang version \([0-9.]*\).*$/\1/p'`
+    CFLAGS="$CFLAGS -Wno-tautological-compare -Wno-cast-align -Wno-self-assign"
+    CXXFLAGS="$CXXFLAGS -Wno-tautological-compare -Wno-cast-align -Wno-self-assign"
 else
     is_clang="notclang"
     gcc_version=`${CC} -dumpversion 2>/dev/null`
@@ -127,6 +129,7 @@ else
     fi
 fi
 ]
+AM_CONDITIONAL(COMPILER_IS_CLANG, test $is_clang = clang)
 
 case "${is_clang}-${gcc_version}" in
      notclang-3.*)