Index: src/OFSystemInfo.h
==================================================================
--- src/OFSystemInfo.h
+++ src/OFSystemInfo.h
@@ -182,8 +182,19 @@
  *
  * @return Whether the CPU supports AVX2
  */
 + (bool)supportsAVX2;
 #endif
+
+#if defined(OF_POWERPC) || defined(OF_POWERPC64)
+/*!
+ * @brief Returns whether the CPU and OS support AltiVec.
+ *
+ * @note This method is only available on PowerPC and PowerPC64.
+ *
+ * @return Whether the CPU and OS support AltiVec
+ */
++ (bool)supportsAltiVec;
+#endif
 @end
 
 OF_ASSUME_NONNULL_END

Index: src/OFSystemInfo.m
==================================================================
--- src/OFSystemInfo.m
+++ src/OFSystemInfo.m
@@ -23,10 +23,16 @@
 #ifdef __GLIBC__
 # undef __USE_XOPEN
 #endif
 
 #include <unistd.h>
+
+#include "platform.h"
+
+#ifdef OF_MAC_OS_X
+# include <sys/sysctl.h>
+#endif
 
 #import "OFSystemInfo.h"
 #import "OFString.h"
 #import "OFArray.h"
 #import "OFDictionary.h"
@@ -365,6 +371,21 @@
 + (bool)supportsAVX2
 {
 	return x86_cpuid(0, 0).eax >= 7 && (x86_cpuid(7, 0).ebx & (1 << 5));
 }
 #endif
+
+#if defined(OF_POWERPC) || defined(OF_POWERPC64)
++ (bool)supportsAltiVec
+{
+# ifdef OF_MAC_OS_X
+	int name[2] = { CTL_HW, HW_VECTORUNIT }, value = 0;
+	size_t length = sizeof(value);
+
+	if (sysctl(name, 2, &value, &length, NULL, 0) == 0)
+		return value;
+# endif
+
+	return 0;
+}
+#endif
 @end