getting confused over pthread vs atomic...

tools/cryptorf/Makefile

@@ -4,30 +4,35 @@ MYINCLUDES = -I../../common/cryptorf
 MYCFLAGS =
 MYDEFS =
 
-platform = $(shell uname)
+# build artifacts
+BINS = cm sm sma sma_multi
+INSTALLTOOLS = $(BINS)
+
+
+include ../../Makefile.host
+# checking platform can be done only after Makefile.host
 
 # Atomic
 # RPi Zero gcc requires -latomic
+MYLDLIBS += -latomic
+
+# macOS might not like pthread?
 ifneq ($(platform),Darwin)
     MYLDLIBS += -lpthread
 endif
 
-BINS = cm sm sma sma_multi
-INSTALLTOOLS = $(BINS)
-
+# macOS needs c++14 standard when compiling c++
 ifeq ($(platform),Darwin)
     MYCXXFLAGS = -std=c++14
 endif
 
-include ../../Makefile.host
-
-# checking platform can be done only after Makefile.host
 ifneq (,$(findstring MINGW,$(platform)))
     # Mingw uses by default Microsoft printf, we want the GNU printf (e.g. for %z)
     # and setting _ISOC99_SOURCE sets internally __USE_MINGW_ANSI_STDIO=1
     MYCFLAGS += -D_ISOC99_SOURCE
 endif
 
+
 cm : $(OBJDIR)/cm.o $(MYOBJS)
 sm : $(OBJDIR)/sm.o $(MYOBJS)
 sma : $(OBJDIR)/sma.o $(MYOBJS)