fix undefined left-shift of negative values in utf-8 state table

[musl] / configure

diff --git a/configure b/configure
index b6b6f89..beed406 100755 (executable)
--- a/configure
+++ b/configure
@@ -134,6 +134,7 @@ shared=auto
 static=yes
 wrapper=auto
 gcc_wrapper=no
+clang_wrapper=no
 
 for arg ; do
 case "$arg" in
@@ -158,8 +159,9 @@ case "$arg" in
 --enable-visibility|--enable-visibility=yes) visibility=yes ;;
 --disable-visibility|--enable-visibility=no) visibility=no ;;
 --enable-wrapper|--enable-wrapper=yes) wrapper=detect ;;
---enable-wrapper=all) wrapper=yes ; gcc_wrapper=yes ;;
+--enable-wrapper=all) wrapper=yes ; gcc_wrapper=yes ; clang_wrapper=yes ;;
 --enable-wrapper=gcc) wrapper=yes ; gcc_wrapper=yes ;;
+--enable-wrapper=clang) wrapper=yes ; clang_wrapper=yes ;;
 --disable-wrapper|--enable-wrapper=no) wrapper=no ;;
 --enable-gcc-wrapper|--enable-gcc-wrapper=yes) wrapper=yes ; gcc_wrapper=yes ;;
 --disable-gcc-wrapper|--enable-gcc-wrapper=no) wrapper=no ;;
@@ -230,6 +232,8 @@ cc_ver="$(LC_ALL=C $CC -v 2>&1)"
 cc_family=unknown
 if fnmatch '*gcc\ version*' "$cc_ver" ; then
 cc_family=gcc
+elif fnmatch '*clang\ version*' "$cc_ver" ; then
+cc_family=clang
 fi
 echo "$cc_family"
 
@@ -237,17 +241,19 @@ echo "$cc_family"
 # Figure out toolchain wrapper to build
 #
 if test "$wrapper" = auto -o "$wrapper" = detect ; then
+echo "#include <stdlib.h>" > "$tmpc"
+echo "#if ! __GLIBC__" >> "$tmpc"
+echo "#error no" >> "$tmpc"
+echo "#endif" >> "$tmpc"
 printf "checking for toolchain wrapper to build... "
-if test "$cc_family" = gcc ; then
+if test "$wrapper" = auto && ! $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+echo "none"
+elif test "$cc_family" = gcc ; then
 gcc_wrapper=yes
-if test "$wrapper" = auto ; then
-while read line ; do
-case "$line" in */ld-musl-*) gcc_wrapper=no ;; esac
-done <<EOF
-$($CC -dumpspecs)
-EOF
-fi
-test "$gcc_wrapper" = yes && echo "gcc"
+echo "gcc"
+elif test "$cc_family" = clang ; then
+clang_wrapper=yes
+echo "clang"
 else
 echo "none"
 if test "$wrapper" = detect ; then
@@ -260,6 +266,9 @@ if test "$gcc_wrapper" = yes ; then
 tools="$tools tools/musl-gcc"
 tool_libs="$tool_libs lib/musl-gcc.specs"
 fi
+if test "$clang_wrapper" = yes ; then
+tools="$tools tools/musl-clang tools/ld.musl-clang"
+fi
 
 #
 # Find the target architecture
@@ -601,6 +610,7 @@ EOF
 test "x$static" = xno && echo "STATIC_LIBS ="
 test "x$shared" = xno && echo "SHARED_LIBS ="
 test "x$cc_family" = xgcc && echo 'WRAPCC_GCC = $(CC)'
+test "x$cc_family" = xclang && echo 'WRAPCC_CLANG = $(CC)'
 exec 1>&3 3>&-
 
 printf "done\n"