From 38f90d7bd6669bd6f48be178669a6186e40b30de Mon Sep 17 00:00:00 2001
From: Tomasz Kramkowski <tomasz@kramkow.ski>
Date: Thu, 2 May 2024 20:36:14 +0100
Subject: Makefile: Use a more complete dependency graph

Use the compiler to generate make-compatible dependency files and
include them to ensure targets are recompiled when a header file
changes.

Also make objects depend on the Makefile explicitly to ensure objects
are re-built when the makefile changes.
---
 Makefile | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 242e93f..9176f4d 100644
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ TARGET := stem
 SRCEXT := c
 SOURCES := $(shell find $(SRCDIR) -type f -name *.$(SRCEXT))
 OBJECTS := $(patsubst $(SRCDIR)/%,$(BUILDDIR)/%,$(SOURCES:.$(SRCEXT)=.o))
-CFLAGS :=
+CFLAGS := -MMD -MP
 LIB := -L lib -lm
 INC := -I include
 
@@ -13,7 +13,7 @@ $(TARGET): $(OBJECTS)
 	@echo " Linking..."
 	@echo " $(CC) $^ -o $(TARGET) $(LIB)"; $(CC) $^ -o $(TARGET) $(LIB) -O3
 
-$(BUILDDIR)/%.o: $(SRCDIR)/%.$(SRCEXT)
+$(BUILDDIR)/%.o: $(SRCDIR)/%.$(SRCEXT) Makefile
 	@echo " Building..."
 	@mkdir -p $(BUILDDIR)
 	@echo " $(CC) $(CFLAGS) $(INC) -c -o $@ $<"; $(CC) $(CFLAGS) $(INC) -c -o $@ $< -save-temps -O3
@@ -33,3 +33,5 @@ doc:
 site:
 	doxygen
 	rsync -uvrP --delete-after "html/" root@nullring.xyz:/var/www/stemdoc
+
+-include $(OBJECTS:.o=.d)
-- 
cgit 


From 476044b4947632ba2b03bc368a513cba55cb1103 Mon Sep 17 00:00:00 2001
From: Tomasz Kramkowski <tomasz@kramkow.ski>
Date: Thu, 2 May 2024 21:04:36 +0100
Subject: Makefile: Add support for generating compile_flags.txt

This helps tools like clangd understand where the header files are such
that they can be used to navigate the codebase quickly and easily.
---
 Makefile | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 9176f4d..9ee2833 100644
--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,9 @@ $(BUILDDIR)/%.o: $(SRCDIR)/%.$(SRCEXT) Makefile
 	@mkdir -p $(BUILDDIR)
 	@echo " $(CC) $(CFLAGS) $(INC) -c -o $@ $<"; $(CC) $(CFLAGS) $(INC) -c -o $@ $< -save-temps -O3
 
+compile_flags.txt: Makefile
+	printf "%s\n" $(CFLAGS) $(INC) >$@
+
 clean:
 	@echo " Cleaning..."; 
 	@echo " $(RM) -r $(BUILDDIR) $(TARGET)"; $(RM) -r $(BUILDDIR) $(TARGET)
-- 
cgit