Initial scaffold: Makefile, stub malloc/free/realloc, test harness

Build system produces libft_malloc_$HOSTTYPE.so shared library with
Libft (NOMALLOC=1) as dependency. Stub functions print their name
and return NULL. Test runner compares system malloc vs LD_PRELOAD
output using write(2) to avoid stdio interference.

1 files changed, 40 insertions, 0 deletions

diff --git a/tests/Makefile b/tests/Makefile
new file mode 100644
index 0000000..04d7c1f
--- /dev/null
+++ b/tests/Makefile
@@ -0,0 +1,40 @@
+CC = cc
+CFLAGS = -Wall -Wextra -Werror $(EXTRA)
+
+SRCDIR = src
+OBJDIR = obj
+BINDIR = bin
+
+NAME = $(BINDIR)/test
+
+SRCS = main.c
+
+OBJS = $(SRCS:%.c=$(OBJDIR)/%.o)
+
+MALLOC_LIB = ../lib/libft_malloc.so
+
+$(NAME): $(OBJS) | $(BINDIR)
+	$(CC) $(CFLAGS) -o $@ $(OBJS)
+
+all: $(NAME)
+
+$(OBJDIR)/%.o: $(SRCDIR)/%.c | $(OBJDIR)
+	$(CC) $(CFLAGS) -c $< -o $@
+
+$(OBJDIR):
+	mkdir -p $(OBJDIR)
+
+$(BINDIR):
+	mkdir -p $(BINDIR)
+
+test: $(NAME)
+	@echo "=== system malloc ==="
+	@$(NAME)
+	@echo ""
+	@echo "=== ft_malloc ==="
+	@LD_PRELOAD=$(MALLOC_LIB) $(NAME)
+
+clean:
+	rm -rf $(OBJDIR) $(BINDIR)
+
+.PHONY: all test clean