enable runtime detection of vector extension on x86/64 target

Cyan4973 · Dec 26, 2024 · 877d9e5 · 877d9e5
1 parent 6fe4f19
commit 877d9e5
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/Makefile b/Makefile
@@ -55,6 +55,13 @@ else
 EXT =
 endif
 
+# automatically enable runtime vector dispatch on x86/64 targets
+detect_x86_arch = $(shell $(CC) -dumpmachine | grep -E 'i[3-6]86|x86_64')
+ifneq ($(strip $(call detect_x86_arch)),)
+    #note: can be overridden at compile time, by setting DISPATCH=0
+    DISPATCH ?= 1
+endif
+
 ifeq ($(NODE_JS),1)
     # Link in unrestricted filesystem support
     LDFLAGS += -sNODERAWFS