enable -Wwrite-strings for gas

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

diff --git a/opcodes/configure b/opcodes/configure
index 75c6573b19ab091b41dced15147c4966976c0907..747c939c2acbad91fc4b7195d737465fb10b1547 100755 (executable)
--- a/opcodes/configure
+++ b/opcodes/configure
@@ -641,6 +641,7 @@ MAINT
 MAINTAINER_MODE_FALSE
 MAINTAINER_MODE_TRUE
 NO_WMISSING_FIELD_INITIALIZERS
+WARN_WRITE_STRINGS
 NO_WERROR
 WARN_CFLAGS
 OTOOL64
@@ -11146,7 +11147,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11149 "configure"
+#line 11150 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11252,7 +11253,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11255 "configure"
+#line 11256 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11504,7 +11505,10 @@ fi
 # 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__
@@ -11518,6 +11522,35 @@ 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
@@ -11576,6 +11609,7 @@ fi
 
 
 
+
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'