From 1523a830d88f61ebca6c6abcd90b51650576c2d2 Mon Sep 17 00:00:00 2001
From: steve-chavez <stevechavezast@gmail.com>
Date: Thu, 3 Aug 2023 17:53:33 -0500
Subject: [PATCH 1/3] fix: make check always compiles dependencies

Make is supposed to only compile dependencies when they change but
`make check` always compiles them, making the test suite run slow.

```
$ make check
cc ... build/mpc.o

$ make check
cc ... build/mpc.o
```

The same occurs for other targets like `build/test-dynamic` and
`build/test-static`.

This happens because these targets have the `$(DIST)` directory as a
dependency, and directories always change whenever members are added,
removed or renamed.

Fix this by changing the `$(DIST)` directory dependency to a
`$(DIST)/.dirstamp` file.

Now `make check` compiles dependencies only once.
---
 .gitignore |  3 ++-
 Makefile   | 13 +++++++------
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/.gitignore b/.gitignore
index 788a748..e2ce213 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,4 +8,5 @@ examples/maths
 examples/smallc
 examples/foobar
 examples/tree_traversal
-build/*
\ No newline at end of file
+build/*
+tags
diff --git a/Makefile b/Makefile
index 9affedd..39ec1d7 100644
--- a/Makefile
+++ b/Makefile
@@ -17,11 +17,12 @@ EXAMPLESEXE = $(EXAMPLES:.c=)
 
 all: $(EXAMPLESEXE) check libs $(DIST)/$(PROJ).pc
 
-$(DIST):
+$(DIST)/.dirstamp:
 	$(MKDIR) $(DIST)
 	$(MKDIR) $(DIST)/examples
+	touch $@
 
-check: $(DIST) $(DIST)/test-file $(DIST)/test-static $(DIST)/test-dynamic
+check: $(DIST)/.dirstamp $(DIST)/test-file $(DIST)/test-static $(DIST)/test-dynamic
 	./$(DIST)/test-file
 	./$(DIST)/test-static
 	LD_LIBRARY_PATH=$(DIST) ./$(DIST)/test-dynamic
@@ -35,23 +36,23 @@ $(DIST)/test-dynamic: $(TESTS) $(DIST)/lib$(PROJ).so $(PROJ).h tests/ptest.h
 $(DIST)/test-static: $(TESTS) $(DIST)/lib$(PROJ).a $(PROJ).h tests/ptest.h
 	$(CC) $(filter-out -Werror, $(CFLAGS)) $(TESTS) -lm -L$(DIST) -l$(PROJ) -static -o $(DIST)/test-static
 
-examples/%: $(DIST) examples/%.c $(PROJ).c $(PROJ).h
+examples/%: $(DIST)/.dirstamp examples/%.c $(PROJ).c $(PROJ).h
 	$(CC) $(CFLAGS) $(filter-out $(DIST) $(PROJ).h, $^) -lm -o $(DIST)/$@
 
-$(DIST)/lib$(PROJ).so: $(DIST) $(PROJ).c $(PROJ).h
+$(DIST)/lib$(PROJ).so: $(DIST)/.dirstamp $(PROJ).c $(PROJ).h
 ifneq ($(OS),Windows_NT)
 	$(CC) $(CFLAGS) -fPIC -shared $(PROJ).c -o $(DIST)/lib$(PROJ).so
 else
 	$(CC) $(CFLAGS) -shared $(PROJ).c -o $(DIST)/lib$(PROJ).so
 endif
 
-$(DIST)/lib$(PROJ).a: $(DIST) $(PROJ).c $(PROJ).h
+$(DIST)/lib$(PROJ).a: $(DIST)/.dirstamp $(PROJ).c $(PROJ).h
 	$(CC) $(CFLAGS) -c $(PROJ).c -o $(DIST)/$(PROJ).o
 	$(AR) rcs $(DIST)/lib$(PROJ).a $(DIST)/$(PROJ).o
 
 libs: $(DIST)/lib$(PROJ).so $(DIST)/lib$(PROJ).a
 
-$(DIST)/$(PROJ).pc: $(DIST) $(PROJ).pc
+$(DIST)/$(PROJ).pc: $(DIST)/.dirstamp $(PROJ).pc
 	cp $(PROJ).pc $(DIST)/$(PROJ).pc
 	sed -i '1i\prefix=$(PREFIX)/' $(DIST)/$(PROJ).pc
 

From c2feb361dc7f75c310d2b337f7ceea6aa5fd7a43 Mon Sep 17 00:00:00 2001
From: steve-chavez <stevechavezast@gmail.com>
Date: Thu, 3 Aug 2023 20:44:26 -0500
Subject: [PATCH 2/3] remove tags

---
 .gitignore | 1 -
 1 file changed, 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index e2ce213..be09b56 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,4 +9,3 @@ examples/smallc
 examples/foobar
 examples/tree_traversal
 build/*
-tags

From 57ce9be86888daa96848da1be92a5d79ea2e0783 Mon Sep 17 00:00:00 2001
From: steve-chavez <stevechavezast@gmail.com>
Date: Thu, 3 Aug 2023 20:46:54 -0500
Subject: [PATCH 3/3] add .dirstamp to examples

---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 39ec1d7..128b2d8 100644
--- a/Makefile
+++ b/Makefile
@@ -37,7 +37,7 @@ $(DIST)/test-static: $(TESTS) $(DIST)/lib$(PROJ).a $(PROJ).h tests/ptest.h
 	$(CC) $(filter-out -Werror, $(CFLAGS)) $(TESTS) -lm -L$(DIST) -l$(PROJ) -static -o $(DIST)/test-static
 
 examples/%: $(DIST)/.dirstamp examples/%.c $(PROJ).c $(PROJ).h
-	$(CC) $(CFLAGS) $(filter-out $(DIST) $(PROJ).h, $^) -lm -o $(DIST)/$@
+	$(CC) $(CFLAGS) $(filter-out $(DIST)/.dirstamp $(PROJ).h, $^) -lm -o $(DIST)/$@
 
 $(DIST)/lib$(PROJ).so: $(DIST)/.dirstamp $(PROJ).c $(PROJ).h
 ifneq ($(OS),Windows_NT)