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Use -Wdeclaration-after-statement if available.

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Dan Nicolaescu 2009-11-20 06:05:10 +00:00
parent 9717f1199f
commit 7a2efa6f08
3 changed files with 73 additions and 0 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2009-11-20 Dan Nicolaescu <dann@ics.uci.edu>
* configure.in: Use -Wdeclaration-after-statement if available.
2009-11-17 Jan Djärv <jan.h.d@swipnet.se>
* configure.in: New option: --with(out)-gconf.

56
configure vendored
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@ -4896,6 +4896,62 @@ CFLAGS="$SAVE_CFLAGS"
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

13
configure.in
View file

@ -757,6 +757,19 @@ CFLAGS="$SAVE_CFLAGS"
unset has_option
unset SAVE_CFLAGS
### Use -Wdeclaration-after-statement if the compiler supports it
AC_MSG_CHECKING([whether gcc understands -Wdeclaration-after-statement])
SAVE_CFLAGS="$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.
dnl checks for programs