[Emacs-diffs] emacs ChangeLog configure configure.in

[Dan Nicolaescu]

CVSROOT:        /cvsroot/emacs
Module name:    emacs
Changes by:     Dan Nicolaescu <dann>   09/11/20 06:05:12

Modified files:
        .              : ChangeLog configure configure.in 

Log message:
        Use -Wdeclaration-after-statement if available.

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/emacs/ChangeLog?cvsroot=emacs&r1=1.867&r2=1.868
http://cvs.savannah.gnu.org/viewcvs/emacs/configure?cvsroot=emacs&r1=1.335&r2=1.336
http://cvs.savannah.gnu.org/viewcvs/emacs/configure.in?cvsroot=emacs&r1=1.614&r2=1.615

Patches:
Index: ChangeLog
===================================================================
RCS file: /cvsroot/emacs/emacs/ChangeLog,v
retrieving revision 1.867
retrieving revision 1.868
diff -u -b -r1.867 -r1.868
--- ChangeLog   17 Nov 2009 08:21:23 -0000      1.867
+++ ChangeLog   20 Nov 2009 06:05:10 -0000      1.868
@@ -1,3 +1,7 @@
+2009-11-20  Dan Nicolaescu  <address@hidden>
+
+       * configure.in: Use -Wdeclaration-after-statement if available.
+
 2009-11-17  Jan Djärv  <address@hidden>
 
        * configure.in: New option: --with(out)-gconf.

Index: configure
===================================================================
RCS file: /cvsroot/emacs/emacs/configure,v
retrieving revision 1.335
retrieving revision 1.336
diff -u -b -r1.335 -r1.336
--- configure   17 Nov 2009 08:21:23 -0000      1.335
+++ configure   20 Nov 2009 06:05:10 -0000      1.336
@@ -4896,6 +4896,62 @@
 unset has_option
 unset SAVE_CFLAGS
 
+### Use -Wdeclaration-after-statement if the compiler supports it
+{ $as_echo "$as_me:$LINENO: checking whether gcc understands 
-Wdeclaration-after-statement" >&5
+$as_echo_n "checking whether gcc understands -Wdeclaration-after-statement... 
" >&6; }
+SAVE_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wdeclaration-after-statement"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
+$as_echo "$ac_try_echo") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+        test -z "$ac_c_werror_flag" ||
+        test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  has_option=yes
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       has_option=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+if test $has_option = yes; then
+   C_WARNINGS_SWITCH="-Wdeclaration-after-statement $C_WARNINGS_SWITCH"
+fi
+{ $as_echo "$as_me:$LINENO: result: $has_option" >&5
+$as_echo "$has_option" >&6; }
+CFLAGS="$SAVE_CFLAGS"
+unset has_option
+unset SAVE_CFLAGS
+
 #### Some other nice autoconf tests.
 
 { $as_echo "$as_me:$LINENO: checking whether ln -s works" >&5

Index: configure.in
===================================================================
RCS file: /cvsroot/emacs/emacs/configure.in,v
retrieving revision 1.614
retrieving revision 1.615
diff -u -b -r1.614 -r1.615
--- configure.in        17 Nov 2009 08:21:25 -0000      1.614
+++ configure.in        20 Nov 2009 06:05:12 -0000      1.615
@@ -757,6 +757,19 @@
 unset has_option
 unset SAVE_CFLAGS
 
+### Use -Wdeclaration-after-statement if the compiler supports it
+AC_MSG_CHECKING([whether gcc understands -Wdeclaration-after-statement])
+SAVE_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Wdeclaration-after-statement"
+AC_TRY_COMPILE([], [], has_option=yes, has_option=no,)
+if test $has_option = yes; then
+   C_WARNINGS_SWITCH="-Wdeclaration-after-statement $C_WARNINGS_SWITCH"
+fi
+AC_MSG_RESULT($has_option)
+CFLAGS="$SAVE_CFLAGS"
+unset has_option
+unset SAVE_CFLAGS
+
 #### Some other nice autoconf tests.
 
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