diff --git a/Makefile b/Makefile
index 88b486e..fc3d127 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,14 @@
 .PHONY: clean build upload 
 .SILENT:
 
-EXECUTABLES=	clang gcc uuid rsync lld taskset
+
+ifeq ($(shell uname),OpenBSD)
+	GCC:=	egcc
+else
+	GCC:=	gcc
+endif
+
+EXECUTABLES=	clang $(GCC) uuid lld taskset
 XXXX:= 		$(foreach exec,$(EXECUTABLES), $(if $(shell which $(exec) 2> /dev/null),X,$(error "No '$(exec)' in PATH, please install it and restart octopus !")))
 
 ### Generic flags
@@ -30,7 +37,7 @@ CFLAGS+=	-Wno-missing-field-initializers
 LDFLAGS=	-fuse-ld=lld
 
 ### Octopus flags
-CCS=		clang gcc
+CCS=		clang $(GCC)
 OPTIMIZATIONS=	0 1 2 3 fast s
 RETPOLINE= 	mretpoline
 UUID:=		$(shell uuid || uuidgen)
@@ -41,7 +48,7 @@ OCTOFLAGS=	-j
 
 ### Octopus internals
 CPU:=		$(shell LC_ALL=en_US.UTF-8 lscpu | grep "Model name" | cut -d":" -f 2 | sort | uniq | awk '{$$1=$$1;print}')
-UCODE:=		$(shell grep microcode /proc/cpuinfo | sort | uniq | awk '{print $$NF}')
+UCODE:=		$(shell grep microcode /proc/cpuinfo | sort | uniq | awk '{print $$NF}' || printf none)
 KERN:=		$(shell uname -svm)
 CLANGV:=	$(shell clang -v 2>&1 | head -n 1)
 GCCV:=		$(shell gcc -v 2>&1 | grep 'gcc version')
@@ -108,53 +115,54 @@ PROGS+=		$(RGROGS)
 PROGS+=		$(RSGPROGS)
 
 all: upload
-	echo -e "\033[1mThank you for helping science today !\033[0m"
+	printf "\033[1mThank you for helping science today !\033[0m\n"
 
 upload: $(RESULTS_FILE)
-	echo -e "\033[4mUploading $^ to www.sk4.nz\033[0m"
+	printf "\033[4mUploading $^ to www.sk4.nz\033[0m\n"
 	chmod 600 $(SSH_KEY)
-	sftp -b - -i $(SSH_KEY) -o BatchMode=yes -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
-		octoupload@www.sk4.nz: <<< $$'put $^'
+	printf 'put $^\n' | sftp -b - -i $(SSH_KEY) \
+		-o BatchMode=yes -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
+		octoupload@www.sk4.nz:
 
 build: $(PROGS)
 
 $(RESULTS_FILE): build
-	echo -e "\033[1m\033[94m________          __";
-	echo "\_____  \   _____/  |_  ____ ______  __ __  ______";
-	echo " /   |   \_/ ___\   __\/  _ \\____ \|  |  \/  ___/";
-	echo "/    |    \  \___|  | (  <_> )  |_> >  |  /\___ \ ";
-	echo "\_______  /\___  >__|  \____/|   __/|____//____  >";
-	echo -e "        \/     \/            |__|              \/\033[0m";
-	echo -e "                       Samuel AUBERTIN - EURECOM\n"
-	echo -e "\033[4mUUID\033[0m\t\t$(UUID)"
-	echo -e "\033[4mCPU\033[0m\t\t$(CPU)"
-	echo -e "\033[4mMicrocode\033[0m\t$(UCODE)"
-	echo -e "\033[4mKernel\033[0m\t\t$(KERN)"
-	echo -e "\033[4mClang\033[0m\t\t$(CLANGV)"
-	echo -e "\033[4mGCC\033[0m\t\t$(GCCV)"
-	echo -e "\033[4mSpectre v1\033[0m\t$(VULN1)"
-	echo -e "\033[4mSpectre v2\033[0m\t$(VULN2)"
-	echo -e "{ \"$(UUID)\": {" >> $@
-	echo -e "\"cpu\": \"$(CPU)\"," >> $@
-	echo -e "\"microcode\": \"$(UCODE)\"," >> $@
-	echo -e "\"kernel\": \"$(KERN)\"," >> $@
-	echo -e "\"clang\": \"$(CLANGV)\"," >> $@
-	echo -e "\"gcc\": \"$(GCCV)\"," >> $@
-	echo -e "\"spectre_v1\": \"$(VULN1)\"," >> $@
-	echo -e "\"spectre_v2\": \"$(VULN2)\"," >> $@
-	echo -e "\"results\": [" >> $@
+	printf "\033[1m\033[94m________          __\n";
+	printf "\_____  \   _____/  |_  ____ ______  __ __  ______\n";
+	printf " /   |   \_/ ___\   __\/  _ \\____ \|  |  \/  ___/\n";
+	printf "/    |    \  \___|  | (  <_> )  |_> >  |  /\___ \ \n";
+	printf "\_______  /\___  >__|  \____/|   __/|____//____  >\n";
+	printf "        \/     \/            |__|              \/\033[0m\n";
+	printf "                       Samuel AUBERTIN - EURECOM\n"
+	printf "\033[4mUUID\033[0m\t\t$(UUID)\n"
+	printf "\033[4mCPU\033[0m\t\t$(CPU)\n"
+	printf "\033[4mMicrocode\033[0m\t$(UCODE)\n"
+	printf "\033[4mKernel\033[0m\t\t$(KERN)\n"
+	printf "\033[4mClang\033[0m\t\t$(CLANGV)\n"
+	printf "\033[4mGCC\033[0m\t\t$(GCCV)\n"
+	printf "\033[4mSpectre v1\033[0m\t$(VULN1)\n"
+	printf "\033[4mSpectre v2\033[0m\t$(VULN2)\n"
+	printf "{ \"$(UUID)\": {\n" >> $@
+	printf "\"cpu\": \"$(CPU)\",\n" >> $@
+	printf "\"microcode\": \"$(UCODE)\",\n" >> $@
+	printf "\"kernel\": \"$(KERN)\",\n" >> $@
+	printf "\"clang\": \"$(CLANGV)\",\n" >> $@
+	printf "\"gcc\": \"$(GCCV)\",\n" >> $@
+	printf "\"spectre_v1\": \"$(VULN1)\",\n" >> $@
+	printf "\"spectre_v2\": \"$(VULN2)\",\n" >> $@
+	printf "\"results\": [\n" >> $@
 	for p in $(PROGS); do \
 		for t in $$(seq $(TIMES)); do \
 			sleep 0.1; \
 			(taskset 01 ./$$p $(OCTOFLAGS) || printf "{ \"$$p\": false }")>> $@; \
 			if ! [ "$$p" = "$(lastword $(PROGS))" ]; \
-				then echo ',' >> $@; \
+				then printf ',\n' >> $@; \
 			else if ! [ $$t -eq $(TIMES) ]; \
-				then echo ',' >> $@; fi; \
+				then printf ',\n' >> $@; fi; \
 			fi; \
 		done \
 	done 
-	echo -e "\n]}}" >> $@
+	printf "\n]}}\n" >> $@
 
 $(OPROGS):
 	@$(PROGRESS) $(SUB_TWO) $(CFLAGS) $(LDFLAGS) -$(SUB_THREE)  -o $@ $(SUB_ONE).c