documented C/C++ compatibility in the makefile

diff --git a/makefile b/makefile
index 103c00ac17b9380b4618c96dfebe4a6148ab4db1..6d377d0c2125a6a0b71e52dc796a6f5e3690dc3d 100644 (file)
--- a/makefile
+++ b/makefile
@@ -1,4 +1,15 @@
-CC=gcc -std=c11
+# compile with any of the following
+CC=gcc -std=c99
+#CC=gcc -std=c11
+#CC=g++ -std=c++98
+#CC=g++ -std=c++11
+#CC=g++ -std=c++14
+#CC=g++ -std=c++17
+#CC=clang -std=c99
+#CC=clang -std=c11
+#CC=clang++ -std=c++98
+#CC=clang++ -std=c++11
+#CC=clang++ -std=c++14
 CFLAGS= -I src -pedantic -Wall -Wextra -O2
 
 .PHONY: all clean directories