From: Lukas Jiriste <ljiriste@student.42prague.com>
Date: Fri, 25 Oct 2024 11:00:04 +0000 (+0200)
Subject: Change Makefile to invoke g++ -MM for dependencies
X-Git-Url: https://git.ljiriste.work/?a=commitdiff_plain;h=83d1541b491bcf46b4347d01671685578ef372fc;p=42%2FCPP_Module_04

Change Makefile to invoke g++ -MM for dependencies

The g++ -MM $(SOURCES) creates dependency list (without system deps) for
all the sources in a format suitable for Makefile.

I don't like using g++ just after making use of clang++ explicit as I
don't know whether both of those are usually present on PCs.
The solution would probably be to provide the g++ incompatible flag
conditionally when c++ == clang++.
---

diff --git a/ex01/Makefile b/ex01/Makefile
index ca73b43..6b87155 100644
--- a/ex01/Makefile
+++ b/ex01/Makefile
@@ -1,6 +1,8 @@
 CC := clang++
 CFLAGS = -std=c++98 -Wall -Wextra -Werror -Wpedantic
 
+DEP_GEN = g++ -MM
+
 ifneq ("$(wildcard .debug)","")
 	CFLAGS += -g -fno-limit-debug-info
 endif
@@ -56,3 +58,11 @@ fclean : clean
 
 re : fclean
 	$(MAKE) all
+
+depend: .depend
+
+.depend: $(SOURCES)
+	rm -f $@
+	$(DEP_GEN) $^ > $@
+
+include .depend