From 5fba9e4d7492ca07d619999120b42495cf3df7c7 Mon Sep 17 00:00:00 2001
From: kartofen <mladenovnasko0@gmail.com>
Date: Sun, 30 Mar 2025 14:43:55 +0300
Subject: can build as a single header

---
 msgpack.h |  4 ++++
 ninja.m4  | 57 +++++++++++++++++++++++++++++++++++++++------------------
 2 files changed, 43 insertions(+), 18 deletions(-)

diff --git a/msgpack.h b/msgpack.h
index 7eff711..8bb4514 100644
--- a/msgpack.h
+++ b/msgpack.h
@@ -242,4 +242,8 @@ static const char * const msgpack_error_string[] = {
 #define MSGPACK_CHECK2(call, arg, body_suc, body_err) \
     __MSGPACK_CHECK_DEFER(call, body_suc, body_err, __EXPAND arg)
 
+#ifdef MSGPACK_IMPLEMENTATION
+// include(SOURCE)
+#endif 
+
 #endif
diff --git a/ninja.m4 b/ninja.m4
index 98824ff..77812a0 100644
--- a/ninja.m4
+++ b/ninja.m4
@@ -4,41 +4,62 @@ cflags  = ifdef([PROD], [], [-std=c99 -Wall -Wextra -g -D_DEFAULT_SOURCE])
 bin     = bin
 m4flags =
 
+# build as library
+
 rule cc
+  command = gcc $cflags $in -o $out
+rule obj
   command = gcc -MD -MF $out.d $cflags -c $in -o $out
   depfile = $out.d
 rule ar
   command = ar rcs $out $in
+rule m4
+  command = m4 $m4flags $in > $out
 
-build $bin/msgpack.o:  cc msgpack.c
-build $bin/msgpack.a:  ar $bin/msgpack.o
-build $bin/msgpack.so: cc msgpack.c
+build $bin/msgpack.o:     obj msgpack.c
+
+build $bin/libmsgpack.a:  ar $bin/msgpack.o
+build $bin/libmsgpack.so: cc $bin/msgpack.o
   cflags = $cflags -fPIC -shared
-  
-rule elf
-  command = gcc $cflags $in -o $out
-rule run
+build $bin/libmsgpack.h:  m4 msgpack.h | msgpack.c
+  m4flags = -D SOURCE=msgpack.c
+
+# testing
+
+rule valgrind
   command = valgrind -s --leak-check=full --show-leak-kinds=all $in
- 
-build $bin/test.o: cc test.c
-build $bin/test:  elf $bin/msgpack.o $bin/test.o
+  
+build $bin/test.o: obj test.c
+build $bin/test: cc msgpack.c $bin/test.o
+
+# named targets
+
+rule cpy
+  command = cp $in $out
+build $bin/msgpack.h: cpy msgpack.h
+
+build static: phony $bin/libmsgpack.a  | $bin/msgpack.h
+build shared: phony $bin/libmsgpack.so | $bin/msgpack.h
+build header: phony $bin/libmsgpack.h
+build test:   valgrind $bin/test
 
-build static: phony $bin/msgpack.a
-build shared: phony $bin/msgpack.so
-build header: phony # TODO write it
-build test:   run $bin/test
+ifdef([PROD], [default header], [default test])
 
-ifdef([PROD], [default test], [default header])
+# regeneration
 
 rule gen
   command = m4 $m4flags ninja.m4 > build.ninja
   generator = 1
-
+  
 build build.ninja: gen | ninja.m4
 
+rule _clean
+  command = ninja -t clean
+build clean: _clean
+
 ifdef([PROD], [dnl
-build dev: gen
+build dev:  gen | clean
 ], [dnl
-build prod: gen
+build prod: gen | clean
   m4flags = -D [PROD]
 ])
-- 
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