enable -Wwrite-strings for gas

[deliverable/binutils-gdb.git] / binutils / configure

diff --git a/binutils/configure b/binutils/configure
index ee1e9f56436f9372343f3309bf376057f222355a..0e88476d0d9f2e9c0f144196f6eb6ab27bfd6414 100755 (executable)
--- a/binutils/configure
+++ b/binutils/configure
@@ -650,6 +650,7 @@ LEX_OUTPUT_ROOT
 LEX
 YFLAGS
 YACC
+WARN_WRITE_STRINGS
 NO_WERROR
 WARN_CFLAGS
 OTOOL64
@@ -9193,7 +9194,7 @@ _LT_EOF
        if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
          export_symbols_cmds='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
        else
-         export_symbols_cmds='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+         export_symbols_cmds='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "L")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
        fi
        aix_use_runtimelinking=no
 
@@ -11221,7 +11222,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11224 "configure"
+#line 11225 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11327,7 +11328,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11330 "configure"
+#line 11331 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11941,7 +11942,10 @@ _ACEOF
 # Set the 'development' global.
 . $srcdir/../bfd/development.sh
 
+# Default set of GCC warnings to enable.
 GCC_WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
+
+# Add -Wshadow if the compiler is a sufficiently recent version of GCC.
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 __GNUC__
@@ -11955,6 +11959,35 @@ fi
 rm -f conftest*
 
 
+# Add -Wstack-usage if the compiler is a sufficiently recent version of GCC.
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+__GNUC__
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "^[0-4]$" >/dev/null 2>&1; then :
+
+else
+  GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wstack-usage=262144"
+fi
+rm -f conftest*
+
+
+# Set WARN_WRITE_STRINGS if the compiler supports -Wwrite-strings.
+WARN_WRITE_STRINGS=""
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+__GNUC__
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "^[0-3]$" >/dev/null 2>&1; then :
+
+else
+  WARN_WRITE_STRINGS="-Wwrite-strings"
+fi
+rm -f conftest*
+
+
 # Check whether --enable-werror was given.
 if test "${enable_werror+set}" = set; then :
   enableval=$enable_werror; case "${enableval}" in
@@ -12014,6 +12047,7 @@ fi
 
 
 
+
 ac_config_headers="$ac_config_headers config.h:config.in"
 
 
@@ -12112,8 +12146,9 @@ fi
 done
 test -n "$LEX" || LEX=":"
 
-if test "x$LEX" != "x:"; then
-  cat >conftest.l <<_ACEOF
+case "$LEX" in
+  :|*"missing "*) ;;
+  *) cat >conftest.l <<_ACEOF
 %%
 a { ECHO; }
 b { REJECT; }
@@ -12224,8 +12259,8 @@ $as_echo "#define YYTEXT_POINTER 1" >>confdefs.h
 
 fi
 rm -f conftest.l $LEX_OUTPUT_ROOT.c
-
-fi
+ ;;
+esac
 if test "$LEX" = :; then
   LEX=${am_missing_run}flex
 fi