Merge pull request oneapi-src#1783 from jimmytwei/mergesortomp_fix

Updated makefile for MergesortOMP sample to use icpc for macOS

Author: jimmytwei

DirectProgramming/C++/GraphTraversal/MergesortOMP/Makefile

@@ -1,9 +1,9 @@
-CXX := icpx
+CXX := icpc
 SRCDIR := src
 BUILDDIR := release
-CFLAGS := -O3 -flto -qopenmp -std=c++11
+CFLAGS := -O3 -ipo -qopenmp -std=c++11
 EXTRA_CFLAGS :=
-LIBFLAGS := -flto -qopenmp
+LIBFLAGS := -qopenmp
 
 ifdef perf_num
 	EXTRA_CFLAGS += -D PERF_NUM
@@ -36,4 +36,4 @@ clean:
 	@rm -fr $(BUILDDIR) $(TARGET) 2>/dev/null || true
 	@rm -f *.bmp *.valsig
 
-.PHONY: clean
+.PHONY: clean