Gerald Pfeifer : configure: Use the -Wempty-body compiler option if present .

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 8213f5410bdae8a0148636f4f879cf1a1367522a
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=8213f5410bdae8a0148636f4f8...

Author: Gerald Pfeifer 
Date:   Sun May  8 02:53:23 2011 +0200

configure: Use the -Wempty-body compiler option if present.

---

configure    |   25 +++++++++++++++++++++++++
 configure.ac |    1 +
 2 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/configure b/configure
index 4866321..2d6df8c 100755
--- a/configure
+++ b/configure
@@ -12273,6 +12273,31 @@ $as_echo "$ac_cv_cflags__Wdeclaration_after_statement" >&6; }
 if test $ac_cv_cflags__Wdeclaration_after_statement = yes; then :
   EXTRACFLAGS="$EXTRACFLAGS -Wdeclaration-after-statement"
 fi
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Wempty-body" >&5
+$as_echo_n "checking whether the compiler supports -Wempty-body... " >&6; }
+if ${ac_cv_cflags__Wempty_body+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_wine_try_cflags_saved=$CFLAGS
+CFLAGS="$CFLAGS -Wempty-body"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int main(int argc, char **argv) { return 0; }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_cflags__Wempty_body=yes
+else
+  ac_cv_cflags__Wempty_body=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+CFLAGS=$ac_wine_try_cflags_saved
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cflags__Wempty_body" >&5
+$as_echo "$ac_cv_cflags__Wempty_body" >&6; }
+if test $ac_cv_cflags__Wempty_body = yes; then :
+  EXTRACFLAGS="$EXTRACFLAGS -Wempty-body"
+fi
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Wstrict-prototypes" >&5
 $as_echo_n "checking whether the compiler supports -Wstrict-prototypes... " >&6; }
 if ${ac_cv_cflags__Wstrict_prototypes+:} false; then :
diff --git a/configure.ac b/configure.ac
index 057035f..eff1550 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1728,6 +1728,7 @@ then
   WINE_TRY_CFLAGS([-fno-builtin],[AC_SUBST(BUILTINFLAG,"-fno-builtin")])
   WINE_TRY_CFLAGS([-fno-strict-aliasing])
   WINE_TRY_CFLAGS([-Wdeclaration-after-statement])
+  WINE_TRY_CFLAGS([-Wempty-body])
   WINE_TRY_CFLAGS([-Wstrict-prototypes])
   WINE_TRY_CFLAGS([-Wtype-limits])
   WINE_TRY_CFLAGS([-Wunused-but-set-parameter])