Jacek Caban : configure: Silence -Wincompatible-library-redeclaration warning.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ee9beb58639269074a4761fa67eaba95fb6fe149
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=ee9beb58639269074a4761fa67eaba95fb6fe149

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Tue Dec 10 20:19:33 2019 +0100

configure: Silence -Wincompatible-library-redeclaration warning.

This is noisy on clang and we can't change declarations due to long
double type incompatibility.

Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 configure    | 31 +++++++++++++++++++++++++++++++
 configure.ac |  2 ++
 2 files changed, 33 insertions(+)

diff --git a/configure b/configure
index a5c504b70b..3af68ca71c 100755
--- a/configure
+++ b/configure
@@ -10295,6 +10295,37 @@ $as_echo "$ac_cv_crosscflags__Wlogical_op" >&6; }
 if test "x$ac_cv_crosscflags__Wlogical_op" = xyes; then :
   EXTRACROSSCFLAGS="$EXTRACROSSCFLAGS -Wlogical-op"
 fi
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the cross-compiler supports -Wincompatible-library-redeclaration" >&5
+$as_echo_n "checking whether the cross-compiler supports -Wincompatible-library-redeclaration... " >&6; }
+if ${ac_cv_crosscflags__Wincompatible_library_redeclaration+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_wine_try_cflags_saved=$CFLAGS
+ac_wine_try_cflags_saved_cc=$CC
+ac_wine_try_cflags_saved_exeext=$ac_exeext
+CFLAGS="$CFLAGS -Wincompatible-library-redeclaration"
+CC="$CROSSCC"
+ac_exeext=".exe"
+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_crosscflags__Wincompatible_library_redeclaration=yes
+else
+  ac_cv_crosscflags__Wincompatible_library_redeclaration=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+CFLAGS=$ac_wine_try_cflags_saved
+CC=$ac_wine_try_cflags_saved_cc
+ac_exeext=$ac_wine_try_cflags_saved_exeext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_crosscflags__Wincompatible_library_redeclaration" >&5
+$as_echo "$ac_cv_crosscflags__Wincompatible_library_redeclaration" >&6; }
+if test "x$ac_cv_crosscflags__Wincompatible_library_redeclaration" = xyes; then :
+  EXTRACROSSCFLAGS="$EXTRACROSSCFLAGS -Wno-incompatible-library-redeclaration"
+fi
 
         case $host_cpu in
           *i[3456789]86*) { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the cross-compiler supports -fno-omit-frame-pointer" >&5
diff --git a/configure.ac b/configure.ac
index 13f971866b..a3bece9e8a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1074,6 +1074,8 @@ then
         WINE_TRY_CROSSCFLAGS([-Wwrite-strings])
         WINE_TRY_CROSSCFLAGS([-Wpointer-arith])
         WINE_TRY_CROSSCFLAGS([-Wlogical-op])
+        WINE_TRY_CROSSCFLAGS([-Wincompatible-library-redeclaration],
+                             [EXTRACROSSCFLAGS="$EXTRACROSSCFLAGS -Wno-incompatible-library-redeclaration"])
 
         case $host_cpu in
           *i[[3456789]]86*) WINE_TRY_CROSSCFLAGS([-fno-omit-frame-pointer]) ;;