Squashed 'external/qoi/qoi/' content from commit 30d15d79b7

git-subtree-dir: external/qoi/qoi
git-subtree-split: 30d15d79b7

Makefile

@@ -0,0 +1,22 @@
+CC ?= gcc
+CFLAGS_BENCH ?= -std=gnu99 -O3
+LFLAGS_BENCH ?= -lpng
+CFLAGS_CONV ?= -std=c99 -O3
+
+TARGET_BENCH ?= qoibench
+TARGET_CONV ?= qoiconv
+
+all: $(TARGET_BENCH) $(TARGET_CONV)
+
+bench: $(TARGET_BENCH)
+
+$(TARGET_BENCH):$(TARGET_BENCH).c
+	$(CC) $(CFLAGS_BENCH) $(CFLAGS) $(TARGET_BENCH).c -o $(TARGET_BENCH) $(LFLAGS_BENCH)
+
+conv: $(TARGET_CONV)
+$(TARGET_CONV):$(TARGET_CONV).c
+	$(CC) $(CFLAGS_CONV) $(CFLAGS) $(TARGET_CONV).c -o $(TARGET_CONV)
+
+.PHONY: clean
+clean:
+	$(RM) $(TARGET_BENCH) $(TARGET_CONV)