virglrenderer: Fix build with clang

Fix warnigns seen with -Wembedded-directive -D_FORTIFY_SOURCE=2

(From OE-Core rev: 6e698bac55f785e84f52161cfab8fe6e764940cc)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 57 insertions, 0 deletions

diff --git a/meta/recipes-graphics/virglrenderer/virglrenderer/0001-vtest-Fix-undefined-behavior-with-clang.patch b/meta/recipes-graphics/virglrenderer/virglrenderer/0001-vtest-Fix-undefined-behavior-with-clang.patch
new file mode 100644
index 0000000000..48488d7be1
--- /dev/null
+++ b/meta/recipes-graphics/virglrenderer/virglrenderer/0001-vtest-Fix-undefined-behavior-with-clang.patch
@@ -0,0 +1,56 @@
+From ea328b246d093477cf26a68b42e975aaaef6abad Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Tue, 28 Nov 2023 21:55:36 -0800
+Subject: [PATCH] vtest: Fix undefined behavior with clang
+
+This is seen when compiling with CC="clang -D_FORTIFY_SOURCE=2"
+Move #ifdef outside of printf() call.
+
+Fixes
+
+| ../git/vtest/vtest_server.c:244:2: error: embedding a directive within macro arguments has undefined behavior [-Werror,-Wembedded-directive]
+|   244 | #ifdef ENABLE_VENUS
+|       |  ^
+| ../git/vtest/vtest_server.c:246:2: error: embedding a directive within macro arguments has undefined behavior [-Werror,-Wembedded-directive]
+|   246 | #endif
+|       |  ^
+
+Upstream-Status: Submitted [https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/1309]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ vtest/vtest_server.c | 12 ++++++++----
+ 1 file changed, 8 insertions(+), 4 deletions(-)
+
+diff --git a/vtest/vtest_server.c b/vtest/vtest_server.c
+index 1ca7f74f..93d949d7 100644
+--- a/vtest/vtest_server.c
++++ b/vtest/vtest_server.c
+@@ -197,6 +197,12 @@ static void vtest_server_parse_args(int argc, char **argv)
+    /* getopt_long stores the option index here. */
+    int option_index = 0;
+ 
++#ifdef ENABLE_VENUS
++   char* ven = " [--venus]";
++#else
++   char* ven = "";
++#endif
++
+    do {
+       ret = getopt_long(argc, argv, "", long_options, &option_index);
+ 
+@@ -244,10 +250,8 @@ static void vtest_server_parse_args(int argc, char **argv)
+          printf("Usage: %s [--no-fork] [--no-loop-or-fork] [--multi-clients] "
+                 "[--use-glx] [--use-egl-surfaceless] [--use-gles] [--no-virgl]"
+                 "[--rendernode <dev>] [--socket-path <path>] "
+-#ifdef ENABLE_VENUS
+-                " [--venus]"
+-#endif
+-                " [file]\n", argv[0]);
++                "%s"
++                " [file]\n", argv[0], ven);
+          exit(EXIT_FAILURE);
+          break;
+       }
+-- 
+2.43.0
+
diff --git a/meta/recipes-graphics/virglrenderer/virglrenderer_1.0.0.bb b/meta/recipes-graphics/virglrenderer/virglrenderer_1.0.0.bb
index ffe30a9c52..eb7ba1089f 100644
--- a/meta/recipes-graphics/virglrenderer/virglrenderer_1.0.0.bb
+++ b/meta/recipes-graphics/virglrenderer/virglrenderer_1.0.0.bb
@@ -12,6 +12,7 @@ DEPENDS = "libdrm libepoxy virtual/egl virtual/libgbm"
 SRCREV = "9c9d55ecbe502e0d71ee99529709efcca69aac42"
 SRC_URI = "git://gitlab.freedesktop.org/virgl/virglrenderer.git;branch=main;protocol=https \
            file://0001-meson.build-use-python3-directly-for-python.patch \
+           file://0001-vtest-Fix-undefined-behavior-with-clang.patch \
            "
 
 S = "${WORKDIR}/git"