When building target binaries, ensure that the warning flags selected for the command...

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

diff --git a/gas/configure b/gas/configure
index 29ec28e96612547a1df6b70dc5cabfecd08c3e18..6fae0d9d705a2bcd4bfdccd68f6d0ed3618995ba 100755 (executable)
--- a/gas/configure
+++ b/gas/configure
@@ -642,6 +642,7 @@ cgen_cpu_prefix
 GDBINIT
 WARN_WRITE_STRINGS
 NO_WERROR
+WARN_CFLAGS_FOR_BUILD
 WARN_CFLAGS
 OTOOL64
 OTOOL
@@ -10985,7 +10986,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10988 "configure"
+#line 10989 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11091,7 +11092,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11094 "configure"
+#line 11095 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11721,8 +11722,12 @@ using_cgen=no
 # Set the 'development' global.
 . $srcdir/../bfd/development.sh
 
+# Set acp_cpp_for_build variable
+ac_cpp_for_build="$CC_FOR_BUILD -E $CPPFLAGS_FOR_BUILD"
+
 # Default set of GCC warnings to enable.
 GCC_WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
+GCC_WARN_CFLAGS_FOR_BUILD="-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
@@ -11767,6 +11772,36 @@ fi
 rm -f conftest*
 
 
+# Verify CC_FOR_BUILD to be compatible with waring flags
+
+# Add -Wshadow 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_for_build conftest.$ac_ext") 2>&5 |
+  $EGREP "^[0-3]$" >/dev/null 2>&1; then :
+
+else
+  GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wshadow"
+fi
+rm -f conftest*
+
+
+# Add -Wstack-usage if the compiler is a sufficiently recent version of GCC.
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+__GNUC__
+_ACEOF
+if (eval "$ac_cpp_for_build conftest.$ac_ext") 2>&5 |
+  $EGREP "^[0-4]$" >/dev/null 2>&1; then :
+
+else
+  GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wstack-usage=262144"
+fi
+rm -f conftest*
+
+
 # Check whether --enable-werror was given.
 if test "${enable_werror+set}" = set; then :
   enableval=$enable_werror; case "${enableval}" in
@@ -11782,6 +11817,7 @@ case "${host}" in
   *-*-mingw32*)
     if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
       GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wno-format"
+      GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Wno-format"
     fi
     ;;
   *) ;;
@@ -11795,25 +11831,32 @@ fi
 NO_WERROR=
 if test "${ERROR_ON_WARNING}" = yes ; then
     GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Werror"
+    GCC_WARN_CFLAGS_FOR_BUILD="$GCC_WARN_CFLAGS_FOR_BUILD -Werror"
     NO_WERROR="-Wno-error"
 fi
 
 if test "${GCC}" = yes ; then
   WARN_CFLAGS="${GCC_WARN_CFLAGS}"
+  WARN_CFLAGS_FOR_BUILD="${GCC_WARN_CFLAGS_FOR_BUILD}"
 fi
 
 # Check whether --enable-build-warnings was given.
 if test "${enable_build_warnings+set}" = set; then :
   enableval=$enable_build_warnings; case "${enableval}" in
-  yes) WARN_CFLAGS="${GCC_WARN_CFLAGS}";;
+  yes) WARN_CFLAGS="${GCC_WARN_CFLAGS}"
+        WARN_CFLAGS_FOR_BUILD="${GCC_WARN_CFLAGS_FOR_BUILD}";;
   no)  if test "${GCC}" = yes ; then
          WARN_CFLAGS="-w"
+      WARN_CFLAGS_FOR_BUILD="-w"
        fi;;
   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
-        WARN_CFLAGS="${GCC_WARN_CFLAGS} ${t}";;
+        WARN_CFLAGS="${GCC_WARN_CFLAGS} ${t}"
+        WARN_CFLAGS_FOR_BUILD="${GCC_WARN_CFLAGS_FOR_BUILD} ${t}";;
   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
-        WARN_CFLAGS="${t} ${GCC_WARN_CFLAGS}";;
-  *)    WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`;;
+        WARN_CFLAGS="${t} ${GCC_WARN_CFLAGS}"
+        WARN_CFLAGS_FOR_BUILD="${t} ${GCC_WARN_CFLAGS_FOR_BUILD}";;
+  *)    WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`
+        WARN_CFLAGS_FOR_BUILD=`echo "${enableval}" | sed -e "s/,/ /g"`;;
 esac
 fi
 
@@ -11827,6 +11870,7 @@ fi
 
 
 
+
 # Generate a header file
 ac_config_headers="$ac_config_headers config.h:config.in"