From c9daec556780610d5d4a25f35d06a288294da744 Mon Sep 17 00:00:00 2001
From: Chris Young <chris@unsatisfactorysoftware.co.uk>
Date: Sat, 9 Jul 2016 00:29:45 +0100
Subject: Set an env-var if we don't have AltiVec This, in theory, allows us to
 use libjpeg-turbo 1.5+ on both AltiVec and non-AltiVec systems.

---
 frontends/amiga/gui.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/frontends/amiga/gui.c b/frontends/amiga/gui.c
index a05761aa7..9e57bc780 100644
--- a/frontends/amiga/gui.c
+++ b/frontends/amiga/gui.c
@@ -5544,6 +5544,19 @@ int main(int argc, char** argv)
 	/* Open splash window */
 	Object *splash_window = ami_gui_splash_open();
 
+#ifdef __amigaos4__
+	/* Check for AltiVec */
+	uint32 altivec = 0;
+	GetCPUInfoTags(GCIT_VectorUnit, &altivec);
+
+	if(altivec == VECTORTYPE_ALTIVEC) {
+		LOG("AltiVec detected");
+	} else {
+		LOG("AltiVec NOT detected");
+		SetVar("JSIMD_FORCENONE", "0", 1, GVF_LOCAL_ONLY);
+	}
+#endif
+
 	ami_object_init();
 
 	if (ami_open_resources() == false) { /* alloc message ports */
-- 
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