Gerald Pfeifer : configure: Use the -Wno-packed-not-aligned compiler option if available.

[Alexandre Julliard]

Module: wine
Branch: oldstable
Commit: 0c505f3e3e6d1053ae8e30b6604dade32f56b20b
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=0c505f3e3e6d1053ae8e30b66...

Author: Gerald Pfeifer <gerald(a)pfeifer.com>
Date:   Sat Nov  4 20:06:07 2017 +0100

configure: Use the -Wno-packed-not-aligned compiler option if available.

Signed-off-by: Gerald Pfeifer <gerald(a)pfeifer.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>
(cherry picked from commit 6864803f1ab70f9f9e90903b13e67da40973d12a)
Signed-off-by: Michael Stefaniuc <mstefani(a)winehq.org>

---

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

diff --git a/configure b/configure
index caa68be..848e4c2 100755
--- a/configure
+++ b/configure
@@ -14427,6 +14427,31 @@ $as_echo "$ac_cv_cflags__Wignored_qualifiers" >&6; }
 if test "x$ac_cv_cflags__Wignored_qualifiers" = xyes; then :
   EXTRACFLAGS="$EXTRACFLAGS -Wignored-qualifiers"
 fi
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Wno-packed-not-aligned" >&5
+$as_echo_n "checking whether the compiler supports -Wno-packed-not-aligned... " >&6; }
+if ${ac_cv_cflags__Wno_packed_not_aligned+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_wine_try_cflags_saved=$CFLAGS
+CFLAGS="$CFLAGS -Wno-packed-not-aligned"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int main(int argc, char **argv) { return 0; }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_cflags__Wno_packed_not_aligned=yes
+else
+  ac_cv_cflags__Wno_packed_not_aligned=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+CFLAGS=$ac_wine_try_cflags_saved
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_cflags__Wno_packed_not_aligned" >&5
+$as_echo "$ac_cv_cflags__Wno_packed_not_aligned" >&6; }
+if test "x$ac_cv_cflags__Wno_packed_not_aligned" = xyes; then :
+  EXTRACFLAGS="$EXTRACFLAGS -Wno-packed-not-aligned"
+fi
   { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports -Wshift-overflow=2" >&5
 $as_echo_n "checking whether the compiler supports -Wshift-overflow=2... " >&6; }
 if ${ac_cv_cflags__Wshift_overflow_2+:} false; then :
diff --git a/configure.ac b/configure.ac
index c507d7d..62f5aa9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1767,6 +1767,7 @@ then
   WINE_TRY_CFLAGS([-Wdeclaration-after-statement])
   WINE_TRY_CFLAGS([-Wempty-body])
   WINE_TRY_CFLAGS([-Wignored-qualifiers])
+  WINE_TRY_CFLAGS([-Wno-packed-not-aligned])
   WINE_TRY_CFLAGS([-Wshift-overflow=2])
   WINE_TRY_CFLAGS([-Wstrict-prototypes])
   WINE_TRY_CFLAGS([-Wtype-limits])