From: Jérôme Benoit <jerome.benoit@piment-noir.org>
Date: Mon, 5 Jun 2017 20:46:23 +0000 (+0200)
Subject: Add TD2 exercise 1
X-Git-Url: https://git.piment-noir.org/?a=commitdiff_plain;h=d57668faea3e58be64bb9fbe8cde3c293ebb7990;p=TD_IML.git

Add TD2 exercise 1

Signed-off-by: Jérôme Benoit <jerome.benoit@piment-noir.org>
---

diff --git a/TD2/exercise1/Makefile b/TD2/exercise1/Makefile
new file mode 100644
index 0000000..eb33b06
--- /dev/null
+++ b/TD2/exercise1/Makefile
@@ -0,0 +1,79 @@
+# Sample Makefile to build simple project.
+#
+# This Makefile expect all source files (.c) to be at the same level, in the
+# current working directory.
+#
+# It will automatically generate dependencies, compile all files, and produce a
+# binary using the provided name.
+#
+# Set BINARY_NAME to the name of the binary file to build.
+# Set BUILD_TYPE to either debug or release
+#
+# Automatic dependencies code from:
+# http://make.mad-scientist.net/papers/advanced-auto-dependency-generation/#tldr
+BINARY_NAME=exo1
+BUILD_TYPE=debug
+
+# ====================================
+# DO NOT CHANGE STUFF BEYOND THIS LINE
+# ====================================
+
+all: $(BINARY_NAME)
+
+CC=gcc
+LD=gcc
+
+WARN_FLAGS = -Wall -Wextra
+STD_FLAG = -std=c11
+
+ifeq ($(BUILD_TYPE),debug)
+BUILDDIR := .build/debug
+DEBUG_FLAG = -g
+STRIP_FLAG =
+OPTI_FLAG = -O0
+else
+BUILDDIR := .build/release
+DEBUG_FLAG =
+STRIP_FLAG = -s
+OPTI_FLAG = -O3
+endif
+
+CFLAGS := $(CFLAGS) $(WARN_FLAGS) $(STD_FLAG) $(OPTI_FLAG) $(DEBUG_FLAG)
+LDFLAGS := $(LDFLAGS) $(STRIP_FLAG)
+
+OBJDIR := $(BUILDDIR)/objs
+$(shell mkdir -p $(OBJDIR))
+
+SRCS=$(wildcard *.c)
+OBJS=$(patsubst %.c,$(OBJDIR)/%.o,$(SRCS))
+
+DEPDIR := $(BUILDDIR)/deps
+$(shell mkdir -p $(DEPDIR))
+DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$*.Td
+POSTCOMPILE = mv -f $(DEPDIR)/$*.Td $(DEPDIR)/$*.d
+
+$(BINARY_NAME): $(OBJS)
+	@echo "[LD ] $@"
+	@$(LD) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
+
+$(OBJDIR)/%.o: %.c $(DEPDIR)/%.d
+	@echo "[C  ] $*"
+	@$(CC) $(DEPFLAGS) $(CFLAGS) -c $< -o $@
+	@$(POSTCOMPILE)
+
+$(DEPDIR)/%.d: ;
+
+.PRECIOUS: $(DEPDIR)/%.d
+
+include $(wildcard $(patsubst %,$(DEPDIR)/%.d,$(basename $(SRCS))))
+
+clean:
+	@echo "[CLN]"
+	-@rm -r $(BUILDDIR)
+	-@rm $(BINARY_NAME)
+
+disassemble: $(BINARY_NAME)
+	objdump -d $< | less
+
+symbols: $(BINARY_NAME)
+	objdump -t $< | sort | less
diff --git a/TD2/exercise1/exercise.c b/TD2/exercise1/exercise.c
new file mode 100644
index 0000000..8b112a7
--- /dev/null
+++ b/TD2/exercise1/exercise.c
@@ -0,0 +1,23 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+int main() {
+    int out_file_fd = open("ouput.txt", O_CREAT | O_WRONLY, S_IRUSR | S_IWUSR);
+    if (out_file_fd < 0) {
+        perror("open failure\n");
+        exit(EXIT_FAILURE);
+    }
+
+    dup2(out_file_fd, STDOUT_FILENO);
+
+    puts("Redirection de stdout du processus dans ce fichier");
+
+    close(out_file_fd);
+
+    return EXIT_SUCCESS;
+}