Mesa (main): Android.mk: Fix c11-related build failures

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Module: Mesa
Branch: main
Commit: 45267d5181bb1819dbe6df285a2685d35584c318
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=45267d5181bb1819dbe6df285a2685d35584c318

Author: Roman Stratiienko <r.stratiienko at gmail.com>
Date:   Thu Jun 16 13:32:56 2022 +0300

Android.mk: Fix c11-related build failures

When building with Android.mk we are ending-up with:

    gcc ..... -std=gnu99 .... -std=c11 .... target.o
              ^^^^^^^^^^      ^^^^^^^^
                   |              |
    _______________^_____    _____^___________
     AOSP/KATI GENERATED      MESON GENERATED

Some compilers uses first -std=gnu99 option and ignores second,
which results:

    c99 implicit declaration of function static_assert()

This patch filters-out the first '-std=gnu99' from the cflags obtained
from AOSP/KATI dummy target output to avoid such kind of errors.

Signed-off-by: Roman Stratiienko <r.stratiienko at gmail.com>
Reviewed-by: Jesse Natalie <jenatali at microsoft.com>
Reviewed-by: Mauro Rossi <issor.oruam at gmail.com>
Acked-by: Erik Faye-Lund <erik.faye-lund at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17078>

---

 android/mesa3d_cross.mk | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/android/mesa3d_cross.mk b/android/mesa3d_cross.mk
index b3cc09496a0..92bb2b28103 100644
--- a/android/mesa3d_cross.mk
+++ b/android/mesa3d_cross.mk
@@ -203,10 +203,8 @@ define m-c-flags
 endef
 
 define filter-c-flags
-  $(subst -std=gnu++17,, \
-  $(subst -fno-rtti,, \
-  $(patsubst  -W%,, \
-    $1)))
+  $(filter-out -std=gnu++17 -std=gnu99 -fno-rtti, \
+    $(patsubst  -W%,, $1))
 endef
 
 define m-c-abs-includes