Improved Cooley-Tukey

1 files changed, 9 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 7b3a78f..8a88b0c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,16 @@
-CXX=clang++-7
+CXX=clang++-7 -stdlib=libc++
+CXXFLAGS=-stdlib=libc++ -Wall -O2 -std=c++17
+#-march=native -mtune=native # is not better for llvm
+
+# libstdc++-8 doesn't have transform_reduce
+#CXX=g++-8
+#CXXFLAGS=-Wall -O2 -std=c++17 -nostdinc++ -I/usr/lib/llvm-7/include/c++/v1 -nodefaultlibs -lc++ -lc++abi -lm -lc -lgcc_s -lgcc
+# -march=native -mtune=native # doesn't help for gcc
 
 all: fft
 
 fft: fft.cpp
-	$(CXX) -Wall -O2 -std=c++17 -o $@ $^
+	$(CXX) $(CXXFLAGS) -o $@ $^
 
 install: