Merge pull request #259 from willowec/cat-platform-detect

counter_analysis_toolkit: Automatically detect platform in Makefile

src/counter_analysis_toolkit/Makefile

@@ -1,4 +1,3 @@
-ARCH?=X86
 PAPIDIR?=${PAPI_DIR}
 USEMPI?=false
 LDFLAGS=-L$(PAPIDIR)/lib -lpapi -lm -lpthread -ldl -lrt
@@ -16,6 +15,21 @@ ifeq ($(USEMPI),true)
     CFLAGS+=-DUSE_MPI
 endif
 
+## Try to auto-detect architecture if it is not set.
+ifndef ARCH
+    UNAME_M:=$(shell uname -m)
+
+    ARCH=POWER
+    ifeq ($(UNAME_M),x86_64)
+        ARCH=X86
+    endif
+    ifeq ($(UNAME_M),aarch64)
+        ARCH=ARM
+    endif
+
+    $(info    Detected ARCH=$(ARCH))
+endif
+
 ## Architecture determines vector instruction set.
 ifeq ($(ARCH),X86)
     FLOP+=-mfma -DX86