Simplify the dependencies and clean the README

.gitignore

@@ -1,13 +1,7 @@
-# Ignore any library object.
-lib
-*.so
-
-# Ignore any binaries.
-*.o
+# Ignore library and binaries
 bin
-
-# Ignore examples output.
-*.png
+build
+lib
 
 # Ignore shared data
 share

Makefile

@@ -1,33 +1,32 @@
 # Default compilation flags
-DEPS_DIR := deps
-
-CFLAGS := -O2 -std=c99 -pedantic -Wall -fPIC -Wfatal-errors
+CFLAGS := -O3 -std=c99 -pedantic -Wall -fPIC
 LIBS := -lm
-OBJS := client.o ecef.o error.o io.o map.o projection.o stack.o stepper.o      \
-	turtle.o
-INCLUDES := -Iinclude -Isrc -I$(DEPS_DIR)/tinydir
+INCLUDES := -Iinclude -Isrc
+
+OBJS := build/client.o build/ecef.o build/error.o build/io.o build/map.o       \
+	build/projection.o build/stack.o build/stepper.o build/turtle.o
 
 # Flag for GEOTIFF files
 TURTLE_USE_TIFF := 1
 ifeq ($(TURTLE_USE_TIFF), 1)
 	LIBS += -ltiff
-	OBJS += geotiff16.o
+	OBJS += build/geotiff16.o
 else
 	CFLAGS += -DTURTLE_NO_TIFF
 endif
 
 # Flag for GRD files
 TURTLE_USE_GRD := 1
 ifeq ($(TURTLE_USE_GRD), 1)
-	OBJS += grd.o
+	OBJS += build/grd.o
 else
 	CFLAGS += -DTURTLE_NO_GRD
 endif
 
 # Flag for HGT files
 TURTLE_USE_HGT := 1
 ifeq ($(TURTLE_USE_HGT), 1)
-	OBJS += hgt.o
+	OBJS += build/hgt.o
 else
 	CFLAGS += -DTURTLE_NO_HGT
 endif
@@ -38,36 +37,39 @@ ifeq ($(TURTLE_USE_PNG), 1)
 	PACKAGE := libpng
 	CFLAGS += $(shell pkg-config --cflags $(PACKAGE))
 	LIBS += $(shell pkg-config --libs $(PACKAGE))
-	OBJS += jsmn.o png16.o
-	INCLUDES += -I$(DEPS_DIR)/jsmn
+	OBJS += build/jsmn.o build/png16.o
 else
 	CFLAGS += -DTURTLE_NO_PNG
 endif
 
-# Available builds.
+# Available builds
 .PHONY: lib clean examples
 
-# Rules for building the library.
+# Rules for building the library
 lib: lib/libturtle.so
-	@rm -f *.o
 
 lib/libturtle.so: $(OBJS)
 	@mkdir -p lib
 	@gcc -o $@ $(CFLAGS) -shared $(INCLUDES) $(OBJS) $(LIBS)
 
-%.o: src/turtle/%.c src/turtle/%.h
+build/%.o: src/turtle/%.c src/turtle/%.h
+	@mkdir -p build
 	@gcc $(CFLAGS) $(INCLUDES) -o $@ -c $<
 
-%.o: src/turtle/%.c
+build/%.o: src/turtle/%.c
+	@mkdir -p build
 	@gcc $(CFLAGS) $(INCLUDES) -o $@ -c $<
 
-%.o: src/turtle/io/%.c
+build/%.o: src/turtle/io/%.c
+	@mkdir -p build
 	@gcc $(CFLAGS) $(INCLUDES) -o $@ -c $<
 
-%.o: src/%.c include/%.h
+build/%.o: src/%.c include/%.h
+	@mkdir -p build
 	@gcc $(CFLAGS) $(INCLUDES) -o $@ -c $<
 
-%.o: $(DEPS_DIR)/jsmn/%.c $(DEPS_DIR)/jsmn/%.h
+build/%.o: src/deps/%.c src/deps/%.h
+	@mkdir -p build
 	@gcc $(CFLAGS) -o $@ -c $<
 
 # Rules for building the examples
@@ -85,4 +87,4 @@ bin/example-%: examples/example-%.c
 
 # Clean-up rule
 clean:
-	@rm -rf bin lib *.o
+	@rm -rf bin lib build

README.md

@@ -27,24 +27,24 @@ and dumped in **PNG**, enriched with a custom header (as a `tEXt` chunk).
 
 ## Installation
 
-Currently there is no automatic build procedure. If on a Linux box you might
-try and adapt the provided `Makefile`. The source code conforms to C99. For
-loading or dumping **DEM**s, you will need the following libraries and packages:
+Currently the TURTLE library only supports Linux systems. An example of
+[`Makefile`](Makefile) is shipped with the sources. The following should
+build TURTLE (as a shared library: `libturtle.so`) and the examples:
+```bash
+make && make examples
+```
 
-* **libpng** and [JSMN][JSMN] for local maps.
-* **libtiff** for geotiff data, e.g. [ASTER-GDEM2](https://asterweb.jpl.nasa.gov/gdem.asp)
-  or [GEBCO](http://www.gebco.net/).
-* [TinyDir][TinyDir] for OS independent directories management.
+Note that the TURTLE source code conforms to C99 and has little dependencies
+except on the C89 standard library. Note however that for loading or dumping
+**DEM**s, you might also need the following external libraries:
 
-Note that build options allow to disable either or both of PNG or TIFF formats,
-and their dependencies, if not needed.
+* **libpng** for custom TURTLE dumps.
+* **libtiff** for loading GEOTIFF data, e.g.
+  [ASTER-GDEM2](https://asterweb.jpl.nasa.gov/gdem.asp) or
+  [GEBCO](http://www.gebco.net/).
 
-Note also that while **libpng** and **libtiff** are expected to be installed
-on your system, you can directly get [JSMN][JSMN] and [TinyDir][TinyDir] as
-submodules, e.g. using `git clone --recursive`.
-
-[JSMN]: https://github.com/zserge/jsmn
-[TinyDIr]: https://github.com/cxong/tinydir
+Build options in the Makefile allow to disable either or both of PNG or TIFF
+formats, and their dependencies, if not needed.
 
 ## Documentation
 
@@ -54,5 +54,6 @@ You might directly check the [examples](examples) as well.
 ## License
 
 The TURTLE library is  under the **GNU LGPLv3** license. See the provided
-`LICENSE` and `COPYING.LESSER` files. The [examples](examples) however have a
-separate public domain license allowing them to be copied without restrictions.
+[`LICENSE`](LICENSE) and [`COPYING.LESSER`](COPYING.LESSER) files. The
+[examples](examples) however have a separate public domain license allowing
+them to be copied without restrictions.