From 8e224f98516144722076e79b372c67ba7ded7577 Mon Sep 17 00:00:00 2001
From: Paul Cercueil <paul@crapouillou.net>
Date: Sat, 11 Feb 2023 14:47:30 +0000
Subject: [PATCH] Support compiling without posix_memalign() function

Add NO_POSIX_MEMALIGN option in Makefile.libretro to support platform
that don't provide the posix_memalign() function.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 Makefile            | 3 ++-
 Makefile.libretro   | 3 +++
 frontend/libretro.c | 2 +-
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index cf2ea886..c95f4223 100644
--- a/Makefile
+++ b/Makefile
@@ -13,7 +13,8 @@ CFLAGS += -O2 -DNDEBUG
 endif
 endif
 CFLAGS += -DHAVE_MMAP=$(if $(NO_MMAP),0,1) \
-	  -DHAVE_PTHREAD=$(if $(NO_PTHREAD),0,1)
+	  -DHAVE_PTHREAD=$(if $(NO_PTHREAD),0,1) \
+	  -DHAVE_POSIX_MEMALIGN=$(if $(NO_POSIX_MEMALIGN),0,1)
 CXXFLAGS += $(CFLAGS)
 #DRC_DBG = 1
 #PCNT = 1
diff --git a/Makefile.libretro b/Makefile.libretro
index 9f196387..42843bc6 100644
--- a/Makefile.libretro
+++ b/Makefile.libretro
@@ -210,6 +210,7 @@ else ifeq ($(platform), libnx)
    CFLAGS += -DARM -D__aarch64__=1 -march=armv8-a -mtune=cortex-a57 -mtp=soft -DHAVE_INTTYPES -DLSB_FIRST -ffast-math -mcpu=cortex-a57+crc+fp+simd -ffunction-sections
    CFLAGS += -ftree-vectorize
    CFLAGS += -Ifrontend/switch -ftree-vectorize
+   NO_POSIX_MEMALIGN := 1
    NO_PTHREAD=1
    LIBPTHREAD :=
    STATIC_LINKING=1
@@ -265,6 +266,7 @@ else ifeq ($(platform), vita)
 	ARCH = arm
 	STATIC_LINKING = 1
 	NO_PTHREAD=1
+	NO_POSIX_MEMALIGN := 1
 
 # CTR(3DS)
 else ifeq ($(platform), ctr)
@@ -289,6 +291,7 @@ else ifeq ($(platform), ctr)
 	ARCH = arm
 	HAVE_NEON = 0
 	STATIC_LINKING = 1
+	NO_POSIX_MEMALIGN := 1
 
 # Xbox 360
 else ifeq ($(platform), xenon)
diff --git a/frontend/libretro.c b/frontend/libretro.c
index 177b1500..329c5bcc 100644
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -3039,7 +3039,7 @@ void retro_init(void)
 
 #ifdef _3DS
    vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
-#elif defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200112L) && !defined(VITA) && !defined(__SWITCH__)
+#elif defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE >= 200112L) && HAVE_POSIX_MEMALIGN
    if (posix_memalign(&vout_buf, 16, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2) != 0)
       vout_buf = (void *) 0;
 #else
-- 
2.39.2